From 82820c5dc13428876277afa74ac29789c3e5f345 Mon Sep 17 00:00:00 2001 From: Brendan Ball Date: Mon, 11 Jul 2022 16:04:42 +0200 Subject: [PATCH] [Socket] send connect error to client and close Previously if socket connect handler returns an error then websocket upgrade would be rejected. Browser websocket api doesn't support getting the status code on upgrade failure. This instead successfully upgrades to websocket then sends the error as the first message and immediately closes the socket. This is done instead of sending the error in the close frame payload because that payload is limited to 123 bytes which won't work well for errors provided by the application developer. Close status code 3000 is chosen because RFC6455 states > Status codes in the range 3000-3999 are reserved for use by > libraries, frameworks, and applications. This change allows the application developer to return a custom error on socket connect to indicate for example an authentication/authorization error. The client can then implement custom behaviour based on the error. --- assets/js/phoenix/socket.js | 10 ++++++++++ lib/phoenix/endpoint/cowboy2_handler.ex | 13 +++++++++++-- lib/phoenix/transports/websocket.ex | 5 ++--- priv/static/phoenix.cjs.js | 8 ++++++++ priv/static/phoenix.cjs.js.map | 4 ++-- priv/static/phoenix.js | 8 ++++++++ priv/static/phoenix.min.js | 2 +- priv/static/phoenix.mjs | 8 ++++++++ priv/static/phoenix.mjs.map | 4 ++-- 9 files changed, 52 insertions(+), 10 deletions(-) diff --git a/assets/js/phoenix/socket.js b/assets/js/phoenix/socket.js index 268bfdcbe2..d08c3001ce 100644 --- a/assets/js/phoenix/socket.js +++ b/assets/js/phoenix/socket.js @@ -530,6 +530,10 @@ export default class Socket { if(this.hasLogger()) this.log("receive", `${payload.status || ""} ${topic} ${event} ${ref && "(" + ref + ")" || ""}`, payload) + if (topic === 'phoenix') { + this.onPhoenixMessage(event, payload, ref, join_ref) + } + for(let i = 0; i < this.channels.length; i++){ const channel = this.channels[i] if(!channel.isMember(topic, event, payload, join_ref)){ continue } @@ -543,6 +547,12 @@ export default class Socket { }) } + onPhoenixMessage(event, payload, ref, join_ref) { + if (event === 'phx_error') { + this.onConnError(payload) + } + } + leaveOpenTopic(topic){ let dupChannel = this.channels.find(c => c.topic === topic && (c.isJoined() || c.isJoining())) if(dupChannel){ diff --git a/lib/phoenix/endpoint/cowboy2_handler.ex b/lib/phoenix/endpoint/cowboy2_handler.ex index cbedb17a89..f804df12ec 100644 --- a/lib/phoenix/endpoint/cowboy2_handler.ex +++ b/lib/phoenix/endpoint/cowboy2_handler.ex @@ -44,8 +44,8 @@ defmodule Phoenix.Endpoint.Cowboy2Handler do {:cowboy_websocket, copy_resp_headers(conn, req), [handler | state], cowboy_opts} - {:error, %Plug.Conn{adapter: {@connection, req}} = conn} -> - {:ok, copy_resp_headers(conn, req), {handler, opts}} + {:error, reason, %Plug.Conn{adapter: {@connection, req}} = conn} -> + {:cowboy_websocket, copy_resp_headers(conn, req), [{:error, reason}, handler]} end {:plug, conn, handler, opts} -> @@ -136,6 +136,15 @@ defmodule Phoenix.Endpoint.Cowboy2Handler do ## Websocket callbacks + def websocket_init([{:error, reason}, handler]) do + last_frame = Jason.encode!([nil, nil, "phoenix", "phx_error", reason]) + # Close frame payloads have a max size of 123 bytes + {[ + {:text, last_frame}, + {:close, 3000, ""} + ], [handler]} + end + def websocket_init([handler | state]) do {:ok, state} = handler.init(state) {:ok, [handler | state]} diff --git a/lib/phoenix/transports/websocket.ex b/lib/phoenix/transports/websocket.ex index b08517c8fb..a081900d6d 100644 --- a/lib/phoenix/transports/websocket.ex +++ b/lib/phoenix/transports/websocket.ex @@ -32,10 +32,9 @@ defmodule Phoenix.Transports.WebSocket do case handler.connect(config) do {:ok, state} -> {:ok, conn, state} - :error -> {:error, Plug.Conn.send_resp(conn, 403, "")} + :error -> {:error, :unknown, conn} {:error, reason} -> - {m, f, args} = opts[:error_handler] - {:error, apply(m, f, [conn, reason | args])} + {:error, reason, conn} end end end diff --git a/priv/static/phoenix.cjs.js b/priv/static/phoenix.cjs.js index c8cd56fd87..86d537e638 100644 --- a/priv/static/phoenix.cjs.js +++ b/priv/static/phoenix.cjs.js @@ -1099,6 +1099,9 @@ var Socket = class { } if (this.hasLogger()) this.log("receive", `${payload.status || ""} ${topic} ${event} ${ref && "(" + ref + ")" || ""}`, payload); + if (topic === "phoenix") { + this.onPhoenixMessage(event, payload, ref, join_ref); + } for (let i = 0; i < this.channels.length; i++) { const channel = this.channels[i]; if (!channel.isMember(topic, event, payload, join_ref)) { @@ -1112,6 +1115,11 @@ var Socket = class { } }); } + onPhoenixMessage(event, payload, ref, join_ref) { + if (event === "phx_error") { + this.onConnError(payload); + } + } leaveOpenTopic(topic) { let dupChannel = this.channels.find((c) => c.topic === topic && (c.isJoined() || c.isJoining())); if (dupChannel) { diff --git a/priv/static/phoenix.cjs.js.map b/priv/static/phoenix.cjs.js.map index a077873c6a..ce7f182255 100644 --- a/priv/static/phoenix.cjs.js.map +++ b/priv/static/phoenix.cjs.js.map @@ -1,7 +1,7 @@ { "version": 3, "sources": ["../../assets/js/phoenix/index.js", "../../assets/js/phoenix/utils.js", "../../assets/js/phoenix/constants.js", "../../assets/js/phoenix/push.js", "../../assets/js/phoenix/timer.js", "../../assets/js/phoenix/channel.js", "../../assets/js/phoenix/ajax.js", "../../assets/js/phoenix/longpoll.js", "../../assets/js/phoenix/presence.js", "../../assets/js/phoenix/serializer.js", "../../assets/js/phoenix/socket.js"], - "sourcesContent": ["/**\n * Phoenix Channels JavaScript client\n *\n * ## Socket Connection\n *\n * A single connection is established to the server and\n * channels are multiplexed over the connection.\n * Connect to the server using the `Socket` class:\n *\n * ```javascript\n * let socket = new Socket(\"/socket\", {params: {userToken: \"123\"}})\n * socket.connect()\n * ```\n *\n * The `Socket` constructor takes the mount point of the socket,\n * the authentication params, as well as options that can be found in\n * the Socket docs, such as configuring the `LongPoll` transport, and\n * heartbeat.\n *\n * ## Channels\n *\n * Channels are isolated, concurrent processes on the server that\n * subscribe to topics and broker events between the client and server.\n * To join a channel, you must provide the topic, and channel params for\n * authorization. Here's an example chat room example where `\"new_msg\"`\n * events are listened for, messages are pushed to the server, and\n * the channel is joined with ok/error/timeout matches:\n *\n * ```javascript\n * let channel = socket.channel(\"room:123\", {token: roomToken})\n * channel.on(\"new_msg\", msg => console.log(\"Got message\", msg) )\n * $input.onEnter( e => {\n * channel.push(\"new_msg\", {body: e.target.val}, 10000)\n * .receive(\"ok\", (msg) => console.log(\"created message\", msg) )\n * .receive(\"error\", (reasons) => console.log(\"create failed\", reasons) )\n * .receive(\"timeout\", () => console.log(\"Networking issue...\") )\n * })\n *\n * channel.join()\n * .receive(\"ok\", ({messages}) => console.log(\"catching up\", messages) )\n * .receive(\"error\", ({reason}) => console.log(\"failed join\", reason) )\n * .receive(\"timeout\", () => console.log(\"Networking issue. Still waiting...\"))\n *```\n *\n * ## Joining\n *\n * Creating a channel with `socket.channel(topic, params)`, binds the params to\n * `channel.params`, which are sent up on `channel.join()`.\n * Subsequent rejoins will send up the modified params for\n * updating authorization params, or passing up last_message_id information.\n * Successful joins receive an \"ok\" status, while unsuccessful joins\n * receive \"error\".\n *\n * With the default serializers and WebSocket transport, JSON text frames are\n * used for pushing a JSON object literal. If an `ArrayBuffer` instance is provided,\n * binary encoding will be used and the message will be sent with the binary\n * opcode.\n *\n * *Note*: binary messages are only supported on the WebSocket transport.\n *\n * ## Duplicate Join Subscriptions\n *\n * While the client may join any number of topics on any number of channels,\n * the client may only hold a single subscription for each unique topic at any\n * given time. When attempting to create a duplicate subscription,\n * the server will close the existing channel, log a warning, and\n * spawn a new channel for the topic. The client will have their\n * `channel.onClose` callbacks fired for the existing channel, and the new\n * channel join will have its receive hooks processed as normal.\n *\n * ## Pushing Messages\n *\n * From the previous example, we can see that pushing messages to the server\n * can be done with `channel.push(eventName, payload)` and we can optionally\n * receive responses from the push. Additionally, we can use\n * `receive(\"timeout\", callback)` to abort waiting for our other `receive` hooks\n * and take action after some period of waiting. The default timeout is 10000ms.\n *\n *\n * ## Socket Hooks\n *\n * Lifecycle events of the multiplexed connection can be hooked into via\n * `socket.onError()` and `socket.onClose()` events, ie:\n *\n * ```javascript\n * socket.onError( () => console.log(\"there was an error with the connection!\") )\n * socket.onClose( () => console.log(\"the connection dropped\") )\n * ```\n *\n *\n * ## Channel Hooks\n *\n * For each joined channel, you can bind to `onError` and `onClose` events\n * to monitor the channel lifecycle, ie:\n *\n * ```javascript\n * channel.onError( () => console.log(\"there was an error!\") )\n * channel.onClose( () => console.log(\"the channel has gone away gracefully\") )\n * ```\n *\n * ### onError hooks\n *\n * `onError` hooks are invoked if the socket connection drops, or the channel\n * crashes on the server. In either case, a channel rejoin is attempted\n * automatically in an exponential backoff manner.\n *\n * ### onClose hooks\n *\n * `onClose` hooks are invoked only in two cases. 1) the channel explicitly\n * closed on the server, or 2). The client explicitly closed, by calling\n * `channel.leave()`\n *\n *\n * ## Presence\n *\n * The `Presence` object provides features for syncing presence information\n * from the server with the client and handling presences joining and leaving.\n *\n * ### Syncing state from the server\n *\n * To sync presence state from the server, first instantiate an object and\n * pass your channel in to track lifecycle events:\n *\n * ```javascript\n * let channel = socket.channel(\"some:topic\")\n * let presence = new Presence(channel)\n * ```\n *\n * Next, use the `presence.onSync` callback to react to state changes\n * from the server. For example, to render the list of users every time\n * the list changes, you could write:\n *\n * ```javascript\n * presence.onSync(() => {\n * myRenderUsersFunction(presence.list())\n * })\n * ```\n *\n * ### Listing Presences\n *\n * `presence.list` is used to return a list of presence information\n * based on the local state of metadata. By default, all presence\n * metadata is returned, but a `listBy` function can be supplied to\n * allow the client to select which metadata to use for a given presence.\n * For example, you may have a user online from different devices with\n * a metadata status of \"online\", but they have set themselves to \"away\"\n * on another device. In this case, the app may choose to use the \"away\"\n * status for what appears on the UI. The example below defines a `listBy`\n * function which prioritizes the first metadata which was registered for\n * each user. This could be the first tab they opened, or the first device\n * they came online from:\n *\n * ```javascript\n * let listBy = (id, {metas: [first, ...rest]}) => {\n * first.count = rest.length + 1 // count of this user's presences\n * first.id = id\n * return first\n * }\n * let onlineUsers = presence.list(listBy)\n * ```\n *\n * ### Handling individual presence join and leave events\n *\n * The `presence.onJoin` and `presence.onLeave` callbacks can be used to\n * react to individual presences joining and leaving the app. For example:\n *\n * ```javascript\n * let presence = new Presence(channel)\n *\n * // detect if user has joined for the 1st time or from another tab/device\n * presence.onJoin((id, current, newPres) => {\n * if(!current){\n * console.log(\"user has entered for the first time\", newPres)\n * } else {\n * console.log(\"user additional presence\", newPres)\n * }\n * })\n *\n * // detect if user has left from all tabs/devices, or is still present\n * presence.onLeave((id, current, leftPres) => {\n * if(current.metas.length === 0){\n * console.log(\"user has left from all devices\", leftPres)\n * } else {\n * console.log(\"user left from a device\", leftPres)\n * }\n * })\n * // receive presence data from server\n * presence.onSync(() => {\n * displayUsers(presence.list())\n * })\n * ```\n * @module phoenix\n */\n\nimport Channel from \"./channel\"\nimport LongPoll from \"./longpoll\"\nimport Presence from \"./presence\"\nimport Serializer from \"./serializer\"\nimport Socket from \"./socket\"\n\nexport {\n Channel,\n LongPoll,\n Presence,\n Serializer,\n Socket\n}\n", "// wraps value in closure or returns closure\nexport let closure = (value) => {\n if(typeof value === \"function\"){\n return value\n } else {\n let closure = function (){ return value }\n return closure\n }\n}\n", "export const globalSelf = typeof self !== \"undefined\" ? self : null\nexport const phxWindow = typeof window !== \"undefined\" ? window : null\nexport const global = globalSelf || phxWindow || global\nexport const DEFAULT_VSN = \"2.0.0\"\nexport const SOCKET_STATES = {connecting: 0, open: 1, closing: 2, closed: 3}\nexport const DEFAULT_TIMEOUT = 10000\nexport const WS_CLOSE_NORMAL = 1000\nexport const CHANNEL_STATES = {\n closed: \"closed\",\n errored: \"errored\",\n joined: \"joined\",\n joining: \"joining\",\n leaving: \"leaving\",\n}\nexport const CHANNEL_EVENTS = {\n close: \"phx_close\",\n error: \"phx_error\",\n join: \"phx_join\",\n reply: \"phx_reply\",\n leave: \"phx_leave\"\n}\n\nexport const TRANSPORTS = {\n longpoll: \"longpoll\",\n websocket: \"websocket\"\n}\nexport const XHR_STATES = {\n complete: 4\n}\n", "/**\n * Initializes the Push\n * @param {Channel} channel - The Channel\n * @param {string} event - The event, for example `\"phx_join\"`\n * @param {Object} payload - The payload, for example `{user_id: 123}`\n * @param {number} timeout - The push timeout in milliseconds\n */\nexport default class Push {\n constructor(channel, event, payload, timeout){\n this.channel = channel\n this.event = event\n this.payload = payload || function (){ return {} }\n this.receivedResp = null\n this.timeout = timeout\n this.timeoutTimer = null\n this.recHooks = []\n this.sent = false\n }\n\n /**\n *\n * @param {number} timeout\n */\n resend(timeout){\n this.timeout = timeout\n this.reset()\n this.send()\n }\n\n /**\n *\n */\n send(){\n if(this.hasReceived(\"timeout\")){ return }\n this.startTimeout()\n this.sent = true\n this.channel.socket.push({\n topic: this.channel.topic,\n event: this.event,\n payload: this.payload(),\n ref: this.ref,\n join_ref: this.channel.joinRef()\n })\n }\n\n /**\n *\n * @param {*} status\n * @param {*} callback\n */\n receive(status, callback){\n if(this.hasReceived(status)){\n callback(this.receivedResp.response)\n }\n\n this.recHooks.push({status, callback})\n return this\n }\n\n /**\n * @private\n */\n reset(){\n this.cancelRefEvent()\n this.ref = null\n this.refEvent = null\n this.receivedResp = null\n this.sent = false\n }\n\n /**\n * @private\n */\n matchReceive({status, response, _ref}){\n this.recHooks.filter(h => h.status === status)\n .forEach(h => h.callback(response))\n }\n\n /**\n * @private\n */\n cancelRefEvent(){\n if(!this.refEvent){ return }\n this.channel.off(this.refEvent)\n }\n\n /**\n * @private\n */\n cancelTimeout(){\n clearTimeout(this.timeoutTimer)\n this.timeoutTimer = null\n }\n\n /**\n * @private\n */\n startTimeout(){\n if(this.timeoutTimer){ this.cancelTimeout() }\n this.ref = this.channel.socket.makeRef()\n this.refEvent = this.channel.replyEventName(this.ref)\n\n this.channel.on(this.refEvent, payload => {\n this.cancelRefEvent()\n this.cancelTimeout()\n this.receivedResp = payload\n this.matchReceive(payload)\n })\n\n this.timeoutTimer = setTimeout(() => {\n this.trigger(\"timeout\", {})\n }, this.timeout)\n }\n\n /**\n * @private\n */\n hasReceived(status){\n return this.receivedResp && this.receivedResp.status === status\n }\n\n /**\n * @private\n */\n trigger(status, response){\n this.channel.trigger(this.refEvent, {status, response})\n }\n}\n", "/**\n *\n * Creates a timer that accepts a `timerCalc` function to perform\n * calculated timeout retries, such as exponential backoff.\n *\n * @example\n * let reconnectTimer = new Timer(() => this.connect(), function(tries){\n * return [1000, 5000, 10000][tries - 1] || 10000\n * })\n * reconnectTimer.scheduleTimeout() // fires after 1000\n * reconnectTimer.scheduleTimeout() // fires after 5000\n * reconnectTimer.reset()\n * reconnectTimer.scheduleTimeout() // fires after 1000\n *\n * @param {Function} callback\n * @param {Function} timerCalc\n */\nexport default class Timer {\n constructor(callback, timerCalc){\n this.callback = callback\n this.timerCalc = timerCalc\n this.timer = null\n this.tries = 0\n }\n\n reset(){\n this.tries = 0\n clearTimeout(this.timer)\n }\n\n /**\n * Cancels any previous scheduleTimeout and schedules callback\n */\n scheduleTimeout(){\n clearTimeout(this.timer)\n\n this.timer = setTimeout(() => {\n this.tries = this.tries + 1\n this.callback()\n }, this.timerCalc(this.tries + 1))\n }\n}\n", "import {closure} from \"./utils\"\nimport {\n CHANNEL_EVENTS,\n CHANNEL_STATES,\n} from \"./constants\"\n\nimport Push from \"./push\"\nimport Timer from \"./timer\"\n\n/**\n *\n * @param {string} topic\n * @param {(Object|function)} params\n * @param {Socket} socket\n */\nexport default class Channel {\n constructor(topic, params, socket){\n this.state = CHANNEL_STATES.closed\n this.topic = topic\n this.params = closure(params || {})\n this.socket = socket\n this.bindings = []\n this.bindingRef = 0\n this.timeout = this.socket.timeout\n this.joinedOnce = false\n this.joinPush = new Push(this, CHANNEL_EVENTS.join, this.params, this.timeout)\n this.pushBuffer = []\n this.stateChangeRefs = []\n\n this.rejoinTimer = new Timer(() => {\n if(this.socket.isConnected()){ this.rejoin() }\n }, this.socket.rejoinAfterMs)\n this.stateChangeRefs.push(this.socket.onError(() => this.rejoinTimer.reset()))\n this.stateChangeRefs.push(this.socket.onOpen(() => {\n this.rejoinTimer.reset()\n if(this.isErrored()){ this.rejoin() }\n })\n )\n this.joinPush.receive(\"ok\", () => {\n this.state = CHANNEL_STATES.joined\n this.rejoinTimer.reset()\n this.pushBuffer.forEach(pushEvent => pushEvent.send())\n this.pushBuffer = []\n })\n this.joinPush.receive(\"error\", () => {\n this.state = CHANNEL_STATES.errored\n if(this.socket.isConnected()){ this.rejoinTimer.scheduleTimeout() }\n })\n this.onClose(() => {\n this.rejoinTimer.reset()\n if(this.socket.hasLogger()) this.socket.log(\"channel\", `close ${this.topic} ${this.joinRef()}`)\n this.state = CHANNEL_STATES.closed\n this.socket.remove(this)\n })\n this.onError(reason => {\n if(this.socket.hasLogger()) this.socket.log(\"channel\", `error ${this.topic}`, reason)\n if(this.isJoining()){ this.joinPush.reset() }\n this.state = CHANNEL_STATES.errored\n if(this.socket.isConnected()){ this.rejoinTimer.scheduleTimeout() }\n })\n this.joinPush.receive(\"timeout\", () => {\n if(this.socket.hasLogger()) this.socket.log(\"channel\", `timeout ${this.topic} (${this.joinRef()})`, this.joinPush.timeout)\n let leavePush = new Push(this, CHANNEL_EVENTS.leave, closure({}), this.timeout)\n leavePush.send()\n this.state = CHANNEL_STATES.errored\n this.joinPush.reset()\n if(this.socket.isConnected()){ this.rejoinTimer.scheduleTimeout() }\n })\n this.on(CHANNEL_EVENTS.reply, (payload, ref) => {\n this.trigger(this.replyEventName(ref), payload)\n })\n }\n\n /**\n * Join the channel\n * @param {integer} timeout\n * @returns {Push}\n */\n join(timeout = this.timeout){\n if(this.joinedOnce){\n throw new Error(\"tried to join multiple times. 'join' can only be called a single time per channel instance\")\n } else {\n this.timeout = timeout\n this.joinedOnce = true\n this.rejoin()\n return this.joinPush\n }\n }\n\n /**\n * Hook into channel close\n * @param {Function} callback\n */\n onClose(callback){\n this.on(CHANNEL_EVENTS.close, callback)\n }\n\n /**\n * Hook into channel errors\n * @param {Function} callback\n */\n onError(callback){\n return this.on(CHANNEL_EVENTS.error, reason => callback(reason))\n }\n\n /**\n * Subscribes on channel events\n *\n * Subscription returns a ref counter, which can be used later to\n * unsubscribe the exact event listener\n *\n * @example\n * const ref1 = channel.on(\"event\", do_stuff)\n * const ref2 = channel.on(\"event\", do_other_stuff)\n * channel.off(\"event\", ref1)\n * // Since unsubscription, do_stuff won't fire,\n * // while do_other_stuff will keep firing on the \"event\"\n *\n * @param {string} event\n * @param {Function} callback\n * @returns {integer} ref\n */\n on(event, callback){\n let ref = this.bindingRef++\n this.bindings.push({event, ref, callback})\n return ref\n }\n\n /**\n * Unsubscribes off of channel events\n *\n * Use the ref returned from a channel.on() to unsubscribe one\n * handler, or pass nothing for the ref to unsubscribe all\n * handlers for the given event.\n *\n * @example\n * // Unsubscribe the do_stuff handler\n * const ref1 = channel.on(\"event\", do_stuff)\n * channel.off(\"event\", ref1)\n *\n * // Unsubscribe all handlers from event\n * channel.off(\"event\")\n *\n * @param {string} event\n * @param {integer} ref\n */\n off(event, ref){\n this.bindings = this.bindings.filter((bind) => {\n return !(bind.event === event && (typeof ref === \"undefined\" || ref === bind.ref))\n })\n }\n\n /**\n * @private\n */\n canPush(){ return this.socket.isConnected() && this.isJoined() }\n\n /**\n * Sends a message `event` to phoenix with the payload `payload`.\n * Phoenix receives this in the `handle_in(event, payload, socket)`\n * function. if phoenix replies or it times out (default 10000ms),\n * then optionally the reply can be received.\n *\n * @example\n * channel.push(\"event\")\n * .receive(\"ok\", payload => console.log(\"phoenix replied:\", payload))\n * .receive(\"error\", err => console.log(\"phoenix errored\", err))\n * .receive(\"timeout\", () => console.log(\"timed out pushing\"))\n * @param {string} event\n * @param {Object} payload\n * @param {number} [timeout]\n * @returns {Push}\n */\n push(event, payload, timeout = this.timeout){\n payload = payload || {}\n if(!this.joinedOnce){\n throw new Error(`tried to push '${event}' to '${this.topic}' before joining. Use channel.join() before pushing events`)\n }\n let pushEvent = new Push(this, event, function (){ return payload }, timeout)\n if(this.canPush()){\n pushEvent.send()\n } else {\n pushEvent.startTimeout()\n this.pushBuffer.push(pushEvent)\n }\n\n return pushEvent\n }\n\n /** Leaves the channel\n *\n * Unsubscribes from server events, and\n * instructs channel to terminate on server\n *\n * Triggers onClose() hooks\n *\n * To receive leave acknowledgements, use the `receive`\n * hook to bind to the server ack, ie:\n *\n * @example\n * channel.leave().receive(\"ok\", () => alert(\"left!\") )\n *\n * @param {integer} timeout\n * @returns {Push}\n */\n leave(timeout = this.timeout){\n this.rejoinTimer.reset()\n this.joinPush.cancelTimeout()\n\n this.state = CHANNEL_STATES.leaving\n let onClose = () => {\n if(this.socket.hasLogger()) this.socket.log(\"channel\", `leave ${this.topic}`)\n this.trigger(CHANNEL_EVENTS.close, \"leave\")\n }\n let leavePush = new Push(this, CHANNEL_EVENTS.leave, closure({}), timeout)\n leavePush.receive(\"ok\", () => onClose())\n .receive(\"timeout\", () => onClose())\n leavePush.send()\n if(!this.canPush()){ leavePush.trigger(\"ok\", {}) }\n\n return leavePush\n }\n\n /**\n * Overridable message hook\n *\n * Receives all events for specialized message handling\n * before dispatching to the channel callbacks.\n *\n * Must return the payload, modified or unmodified\n * @param {string} event\n * @param {Object} payload\n * @param {integer} ref\n * @returns {Object}\n */\n onMessage(_event, payload, _ref){ return payload }\n\n /**\n * @private\n */\n isMember(topic, event, payload, joinRef){\n if(this.topic !== topic){ return false }\n\n if(joinRef && joinRef !== this.joinRef()){\n if(this.socket.hasLogger()) this.socket.log(\"channel\", \"dropping outdated message\", {topic, event, payload, joinRef})\n return false\n } else {\n return true\n }\n }\n\n /**\n * @private\n */\n joinRef(){ return this.joinPush.ref }\n\n /**\n * @private\n */\n rejoin(timeout = this.timeout){\n if(this.isLeaving()){ return }\n this.socket.leaveOpenTopic(this.topic)\n this.state = CHANNEL_STATES.joining\n this.joinPush.resend(timeout)\n }\n\n /**\n * @private\n */\n trigger(event, payload, ref, joinRef){\n let handledPayload = this.onMessage(event, payload, ref, joinRef)\n if(payload && !handledPayload){ throw new Error(\"channel onMessage callbacks must return the payload, modified or unmodified\") }\n\n let eventBindings = this.bindings.filter(bind => bind.event === event)\n\n for(let i = 0; i < eventBindings.length; i++){\n let bind = eventBindings[i]\n bind.callback(handledPayload, ref, joinRef || this.joinRef())\n }\n }\n\n /**\n * @private\n */\n replyEventName(ref){ return `chan_reply_${ref}` }\n\n /**\n * @private\n */\n isClosed(){ return this.state === CHANNEL_STATES.closed }\n\n /**\n * @private\n */\n isErrored(){ return this.state === CHANNEL_STATES.errored }\n\n /**\n * @private\n */\n isJoined(){ return this.state === CHANNEL_STATES.joined }\n\n /**\n * @private\n */\n isJoining(){ return this.state === CHANNEL_STATES.joining }\n\n /**\n * @private\n */\n isLeaving(){ return this.state === CHANNEL_STATES.leaving }\n}\n", "import {\n global,\n XHR_STATES\n} from \"./constants\"\n\nexport default class Ajax {\n\n static request(method, endPoint, accept, body, timeout, ontimeout, callback){\n if(global.XDomainRequest){\n let req = new global.XDomainRequest() // IE8, IE9\n this.xdomainRequest(req, method, endPoint, body, timeout, ontimeout, callback)\n } else {\n let req = new global.XMLHttpRequest() // IE7+, Firefox, Chrome, Opera, Safari\n this.xhrRequest(req, method, endPoint, accept, body, timeout, ontimeout, callback)\n }\n }\n\n static xdomainRequest(req, method, endPoint, body, timeout, ontimeout, callback){\n req.timeout = timeout\n req.open(method, endPoint)\n req.onload = () => {\n let response = this.parseJSON(req.responseText)\n callback && callback(response)\n }\n if(ontimeout){ req.ontimeout = ontimeout }\n\n // Work around bug in IE9 that requires an attached onprogress handler\n req.onprogress = () => { }\n\n req.send(body)\n }\n\n static xhrRequest(req, method, endPoint, accept, body, timeout, ontimeout, callback){\n req.open(method, endPoint, true)\n req.timeout = timeout\n req.setRequestHeader(\"Content-Type\", accept)\n req.onerror = () => { callback && callback(null) }\n req.onreadystatechange = () => {\n if(req.readyState === XHR_STATES.complete && callback){\n let response = this.parseJSON(req.responseText)\n callback(response)\n }\n }\n if(ontimeout){ req.ontimeout = ontimeout }\n\n req.send(body)\n }\n\n static parseJSON(resp){\n if(!resp || resp === \"\"){ return null }\n\n try {\n return JSON.parse(resp)\n } catch (e){\n console && console.log(\"failed to parse JSON response\", resp)\n return null\n }\n }\n\n static serialize(obj, parentKey){\n let queryStr = []\n for(var key in obj){\n if(!Object.prototype.hasOwnProperty.call(obj, key)){ continue }\n let paramKey = parentKey ? `${parentKey}[${key}]` : key\n let paramVal = obj[key]\n if(typeof paramVal === \"object\"){\n queryStr.push(this.serialize(paramVal, paramKey))\n } else {\n queryStr.push(encodeURIComponent(paramKey) + \"=\" + encodeURIComponent(paramVal))\n }\n }\n return queryStr.join(\"&\")\n }\n\n static appendParams(url, params){\n if(Object.keys(params).length === 0){ return url }\n\n let prefix = url.match(/\\?/) ? \"&\" : \"?\"\n return `${url}${prefix}${this.serialize(params)}`\n }\n}\n", "import {\n SOCKET_STATES,\n TRANSPORTS\n} from \"./constants\"\n\nimport Ajax from \"./ajax\"\n\nexport default class LongPoll {\n\n constructor(endPoint){\n this.endPoint = null\n this.token = null\n this.skipHeartbeat = true\n this.onopen = function (){ } // noop\n this.onerror = function (){ } // noop\n this.onmessage = function (){ } // noop\n this.onclose = function (){ } // noop\n this.pollEndpoint = this.normalizeEndpoint(endPoint)\n this.readyState = SOCKET_STATES.connecting\n this.poll()\n }\n\n normalizeEndpoint(endPoint){\n return (endPoint\n .replace(\"ws://\", \"http://\")\n .replace(\"wss://\", \"https://\")\n .replace(new RegExp(\"(.*)\\/\" + TRANSPORTS.websocket), \"$1/\" + TRANSPORTS.longpoll))\n }\n\n endpointURL(){\n return Ajax.appendParams(this.pollEndpoint, {token: this.token})\n }\n\n closeAndRetry(code, reason, wasClean){\n this.close(code, reason, wasClean)\n this.readyState = SOCKET_STATES.connecting\n }\n\n ontimeout(){\n this.onerror(\"timeout\")\n this.closeAndRetry(1005, \"timeout\", false)\n }\n\n poll(){\n if(!(this.readyState === SOCKET_STATES.open || this.readyState === SOCKET_STATES.connecting)){ return }\n\n Ajax.request(\"GET\", this.endpointURL(), \"application/json\", null, this.timeout, this.ontimeout.bind(this), (resp) => {\n if(resp){\n var {status, token, messages} = resp\n this.token = token\n } else {\n status = 0\n }\n\n switch(status){\n case 200:\n messages.forEach(msg => {\n // Tasks are what things like event handlers, setTimeout callbacks,\n // promise resolves and more are run within.\n // In modern browsers, there are two different kinds of tasks,\n // microtasks and macrotasks.\n // Microtasks are mainly used for Promises, while macrotasks are\n // used for everything else.\n // Microtasks always have priority over macrotasks. If the JS engine\n // is looking for a task to run, it will always try to empty the\n // microtask queue before attempting to run anything from the\n // macrotask queue.\n //\n // For the WebSocket transport, messages always arrive in their own\n // event. This means that if any promises are resolved from within,\n // their callbacks will always finish execution by the time the\n // next message event handler is run.\n //\n // In order to emulate this behaviour, we need to make sure each\n // onmessage handler is run within it's own macrotask.\n setTimeout(() => {\n this.onmessage({data: msg})\n }, 0)\n })\n this.poll()\n break\n case 204:\n this.poll()\n break\n case 410:\n this.readyState = SOCKET_STATES.open\n this.onopen({})\n this.poll()\n break\n case 403:\n this.onerror(403)\n this.close(1008, \"forbidden\", false)\n break\n case 0:\n case 500:\n this.onerror(500)\n this.closeAndRetry(1011, \"internal server error\", 500)\n break\n default: throw new Error(`unhandled poll status ${status}`)\n }\n })\n }\n\n send(body){\n Ajax.request(\"POST\", this.endpointURL(), \"application/json\", body, this.timeout, this.onerror.bind(this, \"timeout\"), (resp) => {\n if(!resp || resp.status !== 200){\n this.onerror(resp && resp.status)\n this.closeAndRetry(1011, \"internal server error\", false)\n }\n })\n }\n\n close(code, reason, wasClean){\n this.readyState = SOCKET_STATES.closed\n let opts = Object.assign({code: 1000, reason: undefined, wasClean: true}, {code, reason, wasClean})\n if(typeof(CloseEvent) !== \"undefined\"){\n this.onclose(new CloseEvent(\"close\", opts))\n } else {\n this.onclose(opts)\n }\n }\n}\n", "/**\n * Initializes the Presence\n * @param {Channel} channel - The Channel\n * @param {Object} opts - The options,\n * for example `{events: {state: \"state\", diff: \"diff\"}}`\n */\nexport default class Presence {\n\n constructor(channel, opts = {}){\n let events = opts.events || {state: \"presence_state\", diff: \"presence_diff\"}\n this.state = {}\n this.pendingDiffs = []\n this.channel = channel\n this.joinRef = null\n this.caller = {\n onJoin: function (){ },\n onLeave: function (){ },\n onSync: function (){ }\n }\n\n this.channel.on(events.state, newState => {\n let {onJoin, onLeave, onSync} = this.caller\n\n this.joinRef = this.channel.joinRef()\n this.state = Presence.syncState(this.state, newState, onJoin, onLeave)\n\n this.pendingDiffs.forEach(diff => {\n this.state = Presence.syncDiff(this.state, diff, onJoin, onLeave)\n })\n this.pendingDiffs = []\n onSync()\n })\n\n this.channel.on(events.diff, diff => {\n let {onJoin, onLeave, onSync} = this.caller\n\n if(this.inPendingSyncState()){\n this.pendingDiffs.push(diff)\n } else {\n this.state = Presence.syncDiff(this.state, diff, onJoin, onLeave)\n onSync()\n }\n })\n }\n\n onJoin(callback){ this.caller.onJoin = callback }\n\n onLeave(callback){ this.caller.onLeave = callback }\n\n onSync(callback){ this.caller.onSync = callback }\n\n list(by){ return Presence.list(this.state, by) }\n\n inPendingSyncState(){\n return !this.joinRef || (this.joinRef !== this.channel.joinRef())\n }\n\n // lower-level public static API\n\n /**\n * Used to sync the list of presences on the server\n * with the client's state. An optional `onJoin` and `onLeave` callback can\n * be provided to react to changes in the client's local presences across\n * disconnects and reconnects with the server.\n *\n * @returns {Presence}\n */\n static syncState(currentState, newState, onJoin, onLeave){\n let state = this.clone(currentState)\n let joins = {}\n let leaves = {}\n\n this.map(state, (key, presence) => {\n if(!newState[key]){\n leaves[key] = presence\n }\n })\n this.map(newState, (key, newPresence) => {\n let currentPresence = state[key]\n if(currentPresence){\n let newRefs = newPresence.metas.map(m => m.phx_ref)\n let curRefs = currentPresence.metas.map(m => m.phx_ref)\n let joinedMetas = newPresence.metas.filter(m => curRefs.indexOf(m.phx_ref) < 0)\n let leftMetas = currentPresence.metas.filter(m => newRefs.indexOf(m.phx_ref) < 0)\n if(joinedMetas.length > 0){\n joins[key] = newPresence\n joins[key].metas = joinedMetas\n }\n if(leftMetas.length > 0){\n leaves[key] = this.clone(currentPresence)\n leaves[key].metas = leftMetas\n }\n } else {\n joins[key] = newPresence\n }\n })\n return this.syncDiff(state, {joins: joins, leaves: leaves}, onJoin, onLeave)\n }\n\n /**\n *\n * Used to sync a diff of presence join and leave\n * events from the server, as they happen. Like `syncState`, `syncDiff`\n * accepts optional `onJoin` and `onLeave` callbacks to react to a user\n * joining or leaving from a device.\n *\n * @returns {Presence}\n */\n static syncDiff(state, diff, onJoin, onLeave){\n let {joins, leaves} = this.clone(diff)\n if(!onJoin){ onJoin = function (){ } }\n if(!onLeave){ onLeave = function (){ } }\n\n this.map(joins, (key, newPresence) => {\n let currentPresence = state[key]\n state[key] = this.clone(newPresence)\n if(currentPresence){\n let joinedRefs = state[key].metas.map(m => m.phx_ref)\n let curMetas = currentPresence.metas.filter(m => joinedRefs.indexOf(m.phx_ref) < 0)\n state[key].metas.unshift(...curMetas)\n }\n onJoin(key, currentPresence, newPresence)\n })\n this.map(leaves, (key, leftPresence) => {\n let currentPresence = state[key]\n if(!currentPresence){ return }\n let refsToRemove = leftPresence.metas.map(m => m.phx_ref)\n currentPresence.metas = currentPresence.metas.filter(p => {\n return refsToRemove.indexOf(p.phx_ref) < 0\n })\n onLeave(key, currentPresence, leftPresence)\n if(currentPresence.metas.length === 0){\n delete state[key]\n }\n })\n return state\n }\n\n /**\n * Returns the array of presences, with selected metadata.\n *\n * @param {Object} presences\n * @param {Function} chooser\n *\n * @returns {Presence}\n */\n static list(presences, chooser){\n if(!chooser){ chooser = function (key, pres){ return pres } }\n\n return this.map(presences, (key, presence) => {\n return chooser(key, presence)\n })\n }\n\n // private\n\n static map(obj, func){\n return Object.getOwnPropertyNames(obj).map(key => func(key, obj[key]))\n }\n\n static clone(obj){ return JSON.parse(JSON.stringify(obj)) }\n}\n", "/* The default serializer for encoding and decoding messages */\nimport {\n CHANNEL_EVENTS\n} from \"./constants\"\n\nexport default {\n HEADER_LENGTH: 1,\n META_LENGTH: 4,\n KINDS: {push: 0, reply: 1, broadcast: 2},\n\n encode(msg, callback){\n if(msg.payload.constructor === ArrayBuffer){\n return callback(this.binaryEncode(msg))\n } else {\n let payload = [msg.join_ref, msg.ref, msg.topic, msg.event, msg.payload]\n return callback(JSON.stringify(payload))\n }\n },\n\n decode(rawPayload, callback){\n if(rawPayload.constructor === ArrayBuffer){\n return callback(this.binaryDecode(rawPayload))\n } else {\n let [join_ref, ref, topic, event, payload] = JSON.parse(rawPayload)\n return callback({join_ref, ref, topic, event, payload})\n }\n },\n\n // private\n\n binaryEncode(message){\n let {join_ref, ref, event, topic, payload} = message\n let metaLength = this.META_LENGTH + join_ref.length + ref.length + topic.length + event.length\n let header = new ArrayBuffer(this.HEADER_LENGTH + metaLength)\n let view = new DataView(header)\n let offset = 0\n\n view.setUint8(offset++, this.KINDS.push) // kind\n view.setUint8(offset++, join_ref.length)\n view.setUint8(offset++, ref.length)\n view.setUint8(offset++, topic.length)\n view.setUint8(offset++, event.length)\n Array.from(join_ref, char => view.setUint8(offset++, char.charCodeAt(0)))\n Array.from(ref, char => view.setUint8(offset++, char.charCodeAt(0)))\n Array.from(topic, char => view.setUint8(offset++, char.charCodeAt(0)))\n Array.from(event, char => view.setUint8(offset++, char.charCodeAt(0)))\n\n var combined = new Uint8Array(header.byteLength + payload.byteLength)\n combined.set(new Uint8Array(header), 0)\n combined.set(new Uint8Array(payload), header.byteLength)\n\n return combined.buffer\n },\n\n binaryDecode(buffer){\n let view = new DataView(buffer)\n let kind = view.getUint8(0)\n let decoder = new TextDecoder()\n switch(kind){\n case this.KINDS.push: return this.decodePush(buffer, view, decoder)\n case this.KINDS.reply: return this.decodeReply(buffer, view, decoder)\n case this.KINDS.broadcast: return this.decodeBroadcast(buffer, view, decoder)\n }\n },\n\n decodePush(buffer, view, decoder){\n let joinRefSize = view.getUint8(1)\n let topicSize = view.getUint8(2)\n let eventSize = view.getUint8(3)\n let offset = this.HEADER_LENGTH + this.META_LENGTH - 1 // pushes have no ref\n let joinRef = decoder.decode(buffer.slice(offset, offset + joinRefSize))\n offset = offset + joinRefSize\n let topic = decoder.decode(buffer.slice(offset, offset + topicSize))\n offset = offset + topicSize\n let event = decoder.decode(buffer.slice(offset, offset + eventSize))\n offset = offset + eventSize\n let data = buffer.slice(offset, buffer.byteLength)\n return {join_ref: joinRef, ref: null, topic: topic, event: event, payload: data}\n },\n\n decodeReply(buffer, view, decoder){\n let joinRefSize = view.getUint8(1)\n let refSize = view.getUint8(2)\n let topicSize = view.getUint8(3)\n let eventSize = view.getUint8(4)\n let offset = this.HEADER_LENGTH + this.META_LENGTH\n let joinRef = decoder.decode(buffer.slice(offset, offset + joinRefSize))\n offset = offset + joinRefSize\n let ref = decoder.decode(buffer.slice(offset, offset + refSize))\n offset = offset + refSize\n let topic = decoder.decode(buffer.slice(offset, offset + topicSize))\n offset = offset + topicSize\n let event = decoder.decode(buffer.slice(offset, offset + eventSize))\n offset = offset + eventSize\n let data = buffer.slice(offset, buffer.byteLength)\n let payload = {status: event, response: data}\n return {join_ref: joinRef, ref: ref, topic: topic, event: CHANNEL_EVENTS.reply, payload: payload}\n },\n\n decodeBroadcast(buffer, view, decoder){\n let topicSize = view.getUint8(1)\n let eventSize = view.getUint8(2)\n let offset = this.HEADER_LENGTH + 2\n let topic = decoder.decode(buffer.slice(offset, offset + topicSize))\n offset = offset + topicSize\n let event = decoder.decode(buffer.slice(offset, offset + eventSize))\n offset = offset + eventSize\n let data = buffer.slice(offset, buffer.byteLength)\n\n return {join_ref: null, ref: null, topic: topic, event: event, payload: data}\n }\n}\n", "import {\n global,\n phxWindow,\n CHANNEL_EVENTS,\n DEFAULT_TIMEOUT,\n DEFAULT_VSN,\n SOCKET_STATES,\n TRANSPORTS,\n WS_CLOSE_NORMAL\n} from \"./constants\"\n\nimport {\n closure\n} from \"./utils\"\n\nimport Ajax from \"./ajax\"\nimport Channel from \"./channel\"\nimport LongPoll from \"./longpoll\"\nimport Serializer from \"./serializer\"\nimport Timer from \"./timer\"\n\n/** Initializes the Socket *\n *\n * For IE8 support use an ES5-shim (https://github.com/es-shims/es5-shim)\n *\n * @param {string} endPoint - The string WebSocket endpoint, ie, `\"ws://example.com/socket\"`,\n * `\"wss://example.com\"`\n * `\"/socket\"` (inherited host & protocol)\n * @param {Object} [opts] - Optional configuration\n * @param {Function} [opts.transport] - The Websocket Transport, for example WebSocket or Phoenix.LongPoll.\n *\n * Defaults to WebSocket with automatic LongPoll fallback.\n * @param {Function} [opts.encode] - The function to encode outgoing messages.\n *\n * Defaults to JSON encoder.\n *\n * @param {Function} [opts.decode] - The function to decode incoming messages.\n *\n * Defaults to JSON:\n *\n * ```javascript\n * (payload, callback) => callback(JSON.parse(payload))\n * ```\n *\n * @param {number} [opts.timeout] - The default timeout in milliseconds to trigger push timeouts.\n *\n * Defaults `DEFAULT_TIMEOUT`\n * @param {number} [opts.heartbeatIntervalMs] - The millisec interval to send a heartbeat message\n * @param {number} [opts.reconnectAfterMs] - The optional function that returns the millsec\n * socket reconnect interval.\n *\n * Defaults to stepped backoff of:\n *\n * ```javascript\n * function(tries){\n * return [10, 50, 100, 150, 200, 250, 500, 1000, 2000][tries - 1] || 5000\n * }\n * ````\n *\n * @param {number} [opts.rejoinAfterMs] - The optional function that returns the millsec\n * rejoin interval for individual channels.\n *\n * ```javascript\n * function(tries){\n * return [1000, 2000, 5000][tries - 1] || 10000\n * }\n * ````\n *\n * @param {Function} [opts.logger] - The optional function for specialized logging, ie:\n *\n * ```javascript\n * function(kind, msg, data) {\n * console.log(`${kind}: ${msg}`, data)\n * }\n * ```\n *\n * @param {number} [opts.longpollerTimeout] - The maximum timeout of a long poll AJAX request.\n *\n * Defaults to 20s (double the server long poll timer).\n *\n * @param {(Object|function)} [opts.params] - The optional params to pass when connecting\n * @param {string} [opts.binaryType] - The binary type to use for binary WebSocket frames.\n *\n * Defaults to \"arraybuffer\"\n *\n * @param {vsn} [opts.vsn] - The serializer's protocol version to send on connect.\n *\n * Defaults to DEFAULT_VSN.\n*/\nexport default class Socket {\n constructor(endPoint, opts = {}){\n this.stateChangeCallbacks = {open: [], close: [], error: [], message: []}\n this.channels = []\n this.sendBuffer = []\n this.ref = 0\n this.timeout = opts.timeout || DEFAULT_TIMEOUT\n this.transport = opts.transport || global.WebSocket || LongPoll\n this.establishedConnections = 0\n this.defaultEncoder = Serializer.encode.bind(Serializer)\n this.defaultDecoder = Serializer.decode.bind(Serializer)\n this.closeWasClean = false\n this.binaryType = opts.binaryType || \"arraybuffer\"\n this.connectClock = 1\n if(this.transport !== LongPoll){\n this.encode = opts.encode || this.defaultEncoder\n this.decode = opts.decode || this.defaultDecoder\n } else {\n this.encode = this.defaultEncoder\n this.decode = this.defaultDecoder\n }\n let awaitingConnectionOnPageShow = null\n if(phxWindow && phxWindow.addEventListener){\n phxWindow.addEventListener(\"pagehide\", _e => {\n if(this.conn){\n this.disconnect()\n awaitingConnectionOnPageShow = this.connectClock\n }\n })\n phxWindow.addEventListener(\"pageshow\", _e => {\n if(awaitingConnectionOnPageShow === this.connectClock){\n awaitingConnectionOnPageShow = null\n this.connect()\n }\n })\n }\n this.heartbeatIntervalMs = opts.heartbeatIntervalMs || 30000\n this.rejoinAfterMs = (tries) => {\n if(opts.rejoinAfterMs){\n return opts.rejoinAfterMs(tries)\n } else {\n return [1000, 2000, 5000][tries - 1] || 10000\n }\n }\n this.reconnectAfterMs = (tries) => {\n if(opts.reconnectAfterMs){\n return opts.reconnectAfterMs(tries)\n } else {\n return [10, 50, 100, 150, 200, 250, 500, 1000, 2000][tries - 1] || 5000\n }\n }\n this.logger = opts.logger || null\n this.longpollerTimeout = opts.longpollerTimeout || 20000\n this.params = closure(opts.params || {})\n this.endPoint = `${endPoint}/${TRANSPORTS.websocket}`\n this.vsn = opts.vsn || DEFAULT_VSN\n this.heartbeatTimer = null\n this.pendingHeartbeatRef = null\n this.reconnectTimer = new Timer(() => {\n this.teardown(() => this.connect())\n }, this.reconnectAfterMs)\n }\n\n /**\n * Disconnects and replaces the active transport\n *\n * @param {Function} newTransport - The new transport class to instantiate\n *\n */\n replaceTransport(newTransport){\n this.connectClock++\n this.closeWasClean = true\n this.reconnectTimer.reset()\n if(this.conn){\n this.conn.close()\n this.conn = null\n }\n this.transport = newTransport\n }\n\n /**\n * Returns the socket protocol\n *\n * @returns {string}\n */\n protocol(){ return location.protocol.match(/^https/) ? \"wss\" : \"ws\" }\n\n /**\n * The fully qualifed socket url\n *\n * @returns {string}\n */\n endPointURL(){\n let uri = Ajax.appendParams(\n Ajax.appendParams(this.endPoint, this.params()), {vsn: this.vsn})\n if(uri.charAt(0) !== \"/\"){ return uri }\n if(uri.charAt(1) === \"/\"){ return `${this.protocol()}:${uri}` }\n\n return `${this.protocol()}://${location.host}${uri}`\n }\n\n /**\n * Disconnects the socket\n *\n * See https://developer.mozilla.org/en-US/docs/Web/API/CloseEvent#Status_codes for valid status codes.\n *\n * @param {Function} callback - Optional callback which is called after socket is disconnected.\n * @param {integer} code - A status code for disconnection (Optional).\n * @param {string} reason - A textual description of the reason to disconnect. (Optional)\n */\n disconnect(callback, code, reason){\n this.connectClock++\n this.closeWasClean = true\n this.reconnectTimer.reset()\n this.teardown(callback, code, reason)\n }\n\n /**\n *\n * @param {Object} params - The params to send when connecting, for example `{user_id: userToken}`\n *\n * Passing params to connect is deprecated; pass them in the Socket constructor instead:\n * `new Socket(\"/socket\", {params: {user_id: userToken}})`.\n */\n connect(params){\n this.connectClock++\n if(params){\n console && console.log(\"passing params to connect is deprecated. Instead pass :params to the Socket constructor\")\n this.params = closure(params)\n }\n if(this.conn){ return }\n this.closeWasClean = false\n this.conn = new this.transport(this.endPointURL())\n this.conn.binaryType = this.binaryType\n this.conn.timeout = this.longpollerTimeout\n this.conn.onopen = () => this.onConnOpen()\n this.conn.onerror = error => this.onConnError(error)\n this.conn.onmessage = event => this.onConnMessage(event)\n this.conn.onclose = event => this.onConnClose(event)\n }\n\n /**\n * Logs the message. Override `this.logger` for specialized logging. noops by default\n * @param {string} kind\n * @param {string} msg\n * @param {Object} data\n */\n log(kind, msg, data){ this.logger(kind, msg, data) }\n\n /**\n * Returns true if a logger has been set on this socket.\n */\n hasLogger(){ return this.logger !== null }\n\n /**\n * Registers callbacks for connection open events\n *\n * @example socket.onOpen(function(){ console.info(\"the socket was opened\") })\n *\n * @param {Function} callback\n */\n onOpen(callback){\n let ref = this.makeRef()\n this.stateChangeCallbacks.open.push([ref, callback])\n return ref\n }\n\n /**\n * Registers callbacks for connection close events\n * @param {Function} callback\n */\n onClose(callback){\n let ref = this.makeRef()\n this.stateChangeCallbacks.close.push([ref, callback])\n return ref\n }\n\n /**\n * Registers callbacks for connection error events\n *\n * @example socket.onError(function(error){ alert(\"An error occurred\") })\n *\n * @param {Function} callback\n */\n onError(callback){\n let ref = this.makeRef()\n this.stateChangeCallbacks.error.push([ref, callback])\n return ref\n }\n\n /**\n * Registers callbacks for connection message events\n * @param {Function} callback\n */\n onMessage(callback){\n let ref = this.makeRef()\n this.stateChangeCallbacks.message.push([ref, callback])\n return ref\n }\n\n /**\n * Pings the server and invokes the callback with the RTT in milliseconds\n * @param {Function} callback\n *\n * Returns true if the ping was pushed or false if unable to be pushed.\n */\n ping(callback){\n if(!this.isConnected()){ return false }\n let ref = this.makeRef()\n let startTime = Date.now()\n this.push({topic: \"phoenix\", event: \"heartbeat\", payload: {}, ref: ref})\n let onMsgRef = this.onMessage(msg => {\n if(msg.ref === ref){\n this.off([onMsgRef])\n callback(Date.now() - startTime)\n }\n })\n return true\n }\n\n /**\n * @private\n */\n onConnOpen(){\n if(this.hasLogger()) this.log(\"transport\", `connected to ${this.endPointURL()}`)\n this.closeWasClean = false\n this.establishedConnections++\n this.flushSendBuffer()\n this.reconnectTimer.reset()\n this.resetHeartbeat()\n this.stateChangeCallbacks.open.forEach(([, callback]) => callback())\n }\n\n /**\n * @private\n */\n\n heartbeatTimeout(){\n if(this.pendingHeartbeatRef){\n this.pendingHeartbeatRef = null\n if(this.hasLogger()){ this.log(\"transport\", \"heartbeat timeout. Attempting to re-establish connection\") }\n this.abnormalClose(\"heartbeat timeout\")\n }\n }\n\n resetHeartbeat(){\n if(this.conn && this.conn.skipHeartbeat){ return }\n this.pendingHeartbeatRef = null\n clearTimeout(this.heartbeatTimer)\n setTimeout(() => this.sendHeartbeat(), this.heartbeatIntervalMs)\n }\n\n teardown(callback, code, reason){\n if(!this.conn){\n return callback && callback()\n }\n\n this.waitForBufferDone(() => {\n if(this.conn){\n if(code){ this.conn.close(code, reason || \"\") } else { this.conn.close() }\n }\n\n this.waitForSocketClosed(() => {\n if(this.conn){\n this.conn.onclose = function (){ } // noop\n this.conn = null\n }\n\n callback && callback()\n })\n })\n }\n\n waitForBufferDone(callback, tries = 1){\n if(tries === 5 || !this.conn || !this.conn.bufferedAmount){\n callback()\n return\n }\n\n setTimeout(() => {\n this.waitForBufferDone(callback, tries + 1)\n }, 150 * tries)\n }\n\n waitForSocketClosed(callback, tries = 1){\n if(tries === 5 || !this.conn || this.conn.readyState === SOCKET_STATES.closed){\n callback()\n return\n }\n\n setTimeout(() => {\n this.waitForSocketClosed(callback, tries + 1)\n }, 150 * tries)\n }\n\n onConnClose(event){\n let closeCode = event && event.code\n if(this.hasLogger()) this.log(\"transport\", \"close\", event)\n this.triggerChanError()\n clearTimeout(this.heartbeatTimer)\n if(!this.closeWasClean && closeCode !== 1000){\n this.reconnectTimer.scheduleTimeout()\n }\n this.stateChangeCallbacks.close.forEach(([, callback]) => callback(event))\n }\n\n /**\n * @private\n */\n onConnError(error){\n if(this.hasLogger()) this.log(\"transport\", error)\n let transportBefore = this.transport\n let establishedBefore = this.establishedConnections\n this.stateChangeCallbacks.error.forEach(([, callback]) => {\n callback(error, transportBefore, establishedBefore)\n })\n if(transportBefore === this.transport || establishedBefore > 0){\n this.triggerChanError()\n }\n }\n\n /**\n * @private\n */\n triggerChanError(){\n this.channels.forEach(channel => {\n if(!(channel.isErrored() || channel.isLeaving() || channel.isClosed())){\n channel.trigger(CHANNEL_EVENTS.error)\n }\n })\n }\n\n /**\n * @returns {string}\n */\n connectionState(){\n switch(this.conn && this.conn.readyState){\n case SOCKET_STATES.connecting: return \"connecting\"\n case SOCKET_STATES.open: return \"open\"\n case SOCKET_STATES.closing: return \"closing\"\n default: return \"closed\"\n }\n }\n\n /**\n * @returns {boolean}\n */\n isConnected(){ return this.connectionState() === \"open\" }\n\n /**\n * @private\n *\n * @param {Channel}\n */\n remove(channel){\n this.off(channel.stateChangeRefs)\n this.channels = this.channels.filter(c => c.joinRef() !== channel.joinRef())\n }\n\n /**\n * Removes `onOpen`, `onClose`, `onError,` and `onMessage` registrations.\n *\n * @param {refs} - list of refs returned by calls to\n * `onOpen`, `onClose`, `onError,` and `onMessage`\n */\n off(refs){\n for(let key in this.stateChangeCallbacks){\n this.stateChangeCallbacks[key] = this.stateChangeCallbacks[key].filter(([ref]) => {\n return refs.indexOf(ref) === -1\n })\n }\n }\n\n /**\n * Initiates a new channel for the given topic\n *\n * @param {string} topic\n * @param {Object} chanParams - Parameters for the channel\n * @returns {Channel}\n */\n channel(topic, chanParams = {}){\n let chan = new Channel(topic, chanParams, this)\n this.channels.push(chan)\n return chan\n }\n\n /**\n * @param {Object} data\n */\n push(data){\n if(this.hasLogger()){\n let {topic, event, payload, ref, join_ref} = data\n this.log(\"push\", `${topic} ${event} (${join_ref}, ${ref})`, payload)\n }\n\n if(this.isConnected()){\n this.encode(data, result => this.conn.send(result))\n } else {\n this.sendBuffer.push(() => this.encode(data, result => this.conn.send(result)))\n }\n }\n\n /**\n * Return the next message ref, accounting for overflows\n * @returns {string}\n */\n makeRef(){\n let newRef = this.ref + 1\n if(newRef === this.ref){ this.ref = 0 } else { this.ref = newRef }\n\n return this.ref.toString()\n }\n\n sendHeartbeat(){\n if(this.pendingHeartbeatRef && !this.isConnected()){ return }\n this.pendingHeartbeatRef = this.makeRef()\n this.push({topic: \"phoenix\", event: \"heartbeat\", payload: {}, ref: this.pendingHeartbeatRef})\n this.heartbeatTimer = setTimeout(() => this.heartbeatTimeout(), this.heartbeatIntervalMs)\n }\n\n abnormalClose(reason){\n this.closeWasClean = false\n if(this.isConnected()){ this.conn.close(WS_CLOSE_NORMAL, reason) }\n }\n\n flushSendBuffer(){\n if(this.isConnected() && this.sendBuffer.length > 0){\n this.sendBuffer.forEach(callback => callback())\n this.sendBuffer = []\n }\n }\n\n onConnMessage(rawMessage){\n this.decode(rawMessage.data, msg => {\n let {topic, event, payload, ref, join_ref} = msg\n if(ref && ref === this.pendingHeartbeatRef){\n clearTimeout(this.heartbeatTimer)\n this.pendingHeartbeatRef = null\n setTimeout(() => this.sendHeartbeat(), this.heartbeatIntervalMs)\n }\n\n if(this.hasLogger()) this.log(\"receive\", `${payload.status || \"\"} ${topic} ${event} ${ref && \"(\" + ref + \")\" || \"\"}`, payload)\n\n for(let i = 0; i < this.channels.length; i++){\n const channel = this.channels[i]\n if(!channel.isMember(topic, event, payload, join_ref)){ continue }\n channel.trigger(event, payload, ref, join_ref)\n }\n\n for(let i = 0; i < this.stateChangeCallbacks.message.length; i++){\n let [, callback] = this.stateChangeCallbacks.message[i]\n callback(msg)\n }\n })\n }\n\n leaveOpenTopic(topic){\n let dupChannel = this.channels.find(c => c.topic === topic && (c.isJoined() || c.isJoining()))\n if(dupChannel){\n if(this.hasLogger()) this.log(\"transport\", `leaving duplicate topic \"${topic}\"`)\n dupChannel.leave()\n }\n }\n}\n"], - "mappings": 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+ "sourcesContent": ["/**\n * Phoenix Channels JavaScript client\n *\n * ## Socket Connection\n *\n * A single connection is established to the server and\n * channels are multiplexed over the connection.\n * Connect to the server using the `Socket` class:\n *\n * ```javascript\n * let socket = new Socket(\"/socket\", {params: {userToken: \"123\"}})\n * socket.connect()\n * ```\n *\n * The `Socket` constructor takes the mount point of the socket,\n * the authentication params, as well as options that can be found in\n * the Socket docs, such as configuring the `LongPoll` transport, and\n * heartbeat.\n *\n * ## Channels\n *\n * Channels are isolated, concurrent processes on the server that\n * subscribe to topics and broker events between the client and server.\n * To join a channel, you must provide the topic, and channel params for\n * authorization. Here's an example chat room example where `\"new_msg\"`\n * events are listened for, messages are pushed to the server, and\n * the channel is joined with ok/error/timeout matches:\n *\n * ```javascript\n * let channel = socket.channel(\"room:123\", {token: roomToken})\n * channel.on(\"new_msg\", msg => console.log(\"Got message\", msg) )\n * $input.onEnter( e => {\n * channel.push(\"new_msg\", {body: e.target.val}, 10000)\n * .receive(\"ok\", (msg) => console.log(\"created message\", msg) )\n * .receive(\"error\", (reasons) => console.log(\"create failed\", reasons) )\n * .receive(\"timeout\", () => console.log(\"Networking issue...\") )\n * })\n *\n * channel.join()\n * .receive(\"ok\", ({messages}) => console.log(\"catching up\", messages) )\n * .receive(\"error\", ({reason}) => console.log(\"failed join\", reason) )\n * .receive(\"timeout\", () => console.log(\"Networking issue. Still waiting...\"))\n *```\n *\n * ## Joining\n *\n * Creating a channel with `socket.channel(topic, params)`, binds the params to\n * `channel.params`, which are sent up on `channel.join()`.\n * Subsequent rejoins will send up the modified params for\n * updating authorization params, or passing up last_message_id information.\n * Successful joins receive an \"ok\" status, while unsuccessful joins\n * receive \"error\".\n *\n * With the default serializers and WebSocket transport, JSON text frames are\n * used for pushing a JSON object literal. If an `ArrayBuffer` instance is provided,\n * binary encoding will be used and the message will be sent with the binary\n * opcode.\n *\n * *Note*: binary messages are only supported on the WebSocket transport.\n *\n * ## Duplicate Join Subscriptions\n *\n * While the client may join any number of topics on any number of channels,\n * the client may only hold a single subscription for each unique topic at any\n * given time. When attempting to create a duplicate subscription,\n * the server will close the existing channel, log a warning, and\n * spawn a new channel for the topic. The client will have their\n * `channel.onClose` callbacks fired for the existing channel, and the new\n * channel join will have its receive hooks processed as normal.\n *\n * ## Pushing Messages\n *\n * From the previous example, we can see that pushing messages to the server\n * can be done with `channel.push(eventName, payload)` and we can optionally\n * receive responses from the push. Additionally, we can use\n * `receive(\"timeout\", callback)` to abort waiting for our other `receive` hooks\n * and take action after some period of waiting. The default timeout is 10000ms.\n *\n *\n * ## Socket Hooks\n *\n * Lifecycle events of the multiplexed connection can be hooked into via\n * `socket.onError()` and `socket.onClose()` events, ie:\n *\n * ```javascript\n * socket.onError( () => console.log(\"there was an error with the connection!\") )\n * socket.onClose( () => console.log(\"the connection dropped\") )\n * ```\n *\n *\n * ## Channel Hooks\n *\n * For each joined channel, you can bind to `onError` and `onClose` events\n * to monitor the channel lifecycle, ie:\n *\n * ```javascript\n * channel.onError( () => console.log(\"there was an error!\") )\n * channel.onClose( () => console.log(\"the channel has gone away gracefully\") )\n * ```\n *\n * ### onError hooks\n *\n * `onError` hooks are invoked if the socket connection drops, or the channel\n * crashes on the server. In either case, a channel rejoin is attempted\n * automatically in an exponential backoff manner.\n *\n * ### onClose hooks\n *\n * `onClose` hooks are invoked only in two cases. 1) the channel explicitly\n * closed on the server, or 2). The client explicitly closed, by calling\n * `channel.leave()`\n *\n *\n * ## Presence\n *\n * The `Presence` object provides features for syncing presence information\n * from the server with the client and handling presences joining and leaving.\n *\n * ### Syncing state from the server\n *\n * To sync presence state from the server, first instantiate an object and\n * pass your channel in to track lifecycle events:\n *\n * ```javascript\n * let channel = socket.channel(\"some:topic\")\n * let presence = new Presence(channel)\n * ```\n *\n * Next, use the `presence.onSync` callback to react to state changes\n * from the server. For example, to render the list of users every time\n * the list changes, you could write:\n *\n * ```javascript\n * presence.onSync(() => {\n * myRenderUsersFunction(presence.list())\n * })\n * ```\n *\n * ### Listing Presences\n *\n * `presence.list` is used to return a list of presence information\n * based on the local state of metadata. By default, all presence\n * metadata is returned, but a `listBy` function can be supplied to\n * allow the client to select which metadata to use for a given presence.\n * For example, you may have a user online from different devices with\n * a metadata status of \"online\", but they have set themselves to \"away\"\n * on another device. In this case, the app may choose to use the \"away\"\n * status for what appears on the UI. The example below defines a `listBy`\n * function which prioritizes the first metadata which was registered for\n * each user. This could be the first tab they opened, or the first device\n * they came online from:\n *\n * ```javascript\n * let listBy = (id, {metas: [first, ...rest]}) => {\n * first.count = rest.length + 1 // count of this user's presences\n * first.id = id\n * return first\n * }\n * let onlineUsers = presence.list(listBy)\n * ```\n *\n * ### Handling individual presence join and leave events\n *\n * The `presence.onJoin` and `presence.onLeave` callbacks can be used to\n * react to individual presences joining and leaving the app. For example:\n *\n * ```javascript\n * let presence = new Presence(channel)\n *\n * // detect if user has joined for the 1st time or from another tab/device\n * presence.onJoin((id, current, newPres) => {\n * if(!current){\n * console.log(\"user has entered for the first time\", newPres)\n * } else {\n * console.log(\"user additional presence\", newPres)\n * }\n * })\n *\n * // detect if user has left from all tabs/devices, or is still present\n * presence.onLeave((id, current, leftPres) => {\n * if(current.metas.length === 0){\n * console.log(\"user has left from all devices\", leftPres)\n * } else {\n * console.log(\"user left from a device\", leftPres)\n * }\n * })\n * // receive presence data from server\n * presence.onSync(() => {\n * displayUsers(presence.list())\n * })\n * ```\n * @module phoenix\n */\n\nimport Channel from \"./channel\"\nimport LongPoll from \"./longpoll\"\nimport Presence from \"./presence\"\nimport Serializer from \"./serializer\"\nimport Socket from \"./socket\"\n\nexport {\n Channel,\n LongPoll,\n Presence,\n Serializer,\n Socket\n}\n", "// wraps value in closure or returns closure\nexport let closure = (value) => {\n if(typeof value === \"function\"){\n return value\n } else {\n let closure = function (){ return value }\n return closure\n }\n}\n", "export const globalSelf = typeof self !== \"undefined\" ? self : null\nexport const phxWindow = typeof window !== \"undefined\" ? window : null\nexport const global = globalSelf || phxWindow || global\nexport const DEFAULT_VSN = \"2.0.0\"\nexport const SOCKET_STATES = {connecting: 0, open: 1, closing: 2, closed: 3}\nexport const DEFAULT_TIMEOUT = 10000\nexport const WS_CLOSE_NORMAL = 1000\nexport const CHANNEL_STATES = {\n closed: \"closed\",\n errored: \"errored\",\n joined: \"joined\",\n joining: \"joining\",\n leaving: \"leaving\",\n}\nexport const CHANNEL_EVENTS = {\n close: \"phx_close\",\n error: \"phx_error\",\n join: \"phx_join\",\n reply: \"phx_reply\",\n leave: \"phx_leave\"\n}\n\nexport const TRANSPORTS = {\n longpoll: \"longpoll\",\n websocket: \"websocket\"\n}\nexport const XHR_STATES = {\n complete: 4\n}\n", "/**\n * Initializes the Push\n * @param {Channel} channel - The Channel\n * @param {string} event - The event, for example `\"phx_join\"`\n * @param {Object} payload - The payload, for example `{user_id: 123}`\n * @param {number} timeout - The push timeout in milliseconds\n */\nexport default class Push {\n constructor(channel, event, payload, timeout){\n this.channel = channel\n this.event = event\n this.payload = payload || function (){ return {} }\n this.receivedResp = null\n this.timeout = timeout\n this.timeoutTimer = null\n this.recHooks = []\n this.sent = false\n }\n\n /**\n *\n * @param {number} timeout\n */\n resend(timeout){\n this.timeout = timeout\n this.reset()\n this.send()\n }\n\n /**\n *\n */\n send(){\n if(this.hasReceived(\"timeout\")){ return }\n this.startTimeout()\n this.sent = true\n this.channel.socket.push({\n topic: this.channel.topic,\n event: this.event,\n payload: this.payload(),\n ref: this.ref,\n join_ref: this.channel.joinRef()\n })\n }\n\n /**\n *\n * @param {*} status\n * @param {*} callback\n */\n receive(status, callback){\n if(this.hasReceived(status)){\n callback(this.receivedResp.response)\n }\n\n this.recHooks.push({status, callback})\n return this\n }\n\n /**\n * @private\n */\n reset(){\n this.cancelRefEvent()\n this.ref = null\n this.refEvent = null\n this.receivedResp = null\n this.sent = false\n }\n\n /**\n * @private\n */\n matchReceive({status, response, _ref}){\n this.recHooks.filter(h => h.status === status)\n .forEach(h => h.callback(response))\n }\n\n /**\n * @private\n */\n cancelRefEvent(){\n if(!this.refEvent){ return }\n this.channel.off(this.refEvent)\n }\n\n /**\n * @private\n */\n cancelTimeout(){\n clearTimeout(this.timeoutTimer)\n this.timeoutTimer = null\n }\n\n /**\n * @private\n */\n startTimeout(){\n if(this.timeoutTimer){ this.cancelTimeout() }\n this.ref = this.channel.socket.makeRef()\n this.refEvent = this.channel.replyEventName(this.ref)\n\n this.channel.on(this.refEvent, payload => {\n this.cancelRefEvent()\n this.cancelTimeout()\n this.receivedResp = payload\n this.matchReceive(payload)\n })\n\n this.timeoutTimer = setTimeout(() => {\n this.trigger(\"timeout\", {})\n }, this.timeout)\n }\n\n /**\n * @private\n */\n hasReceived(status){\n return this.receivedResp && this.receivedResp.status === status\n }\n\n /**\n * @private\n */\n trigger(status, response){\n this.channel.trigger(this.refEvent, {status, response})\n }\n}\n", "/**\n *\n * Creates a timer that accepts a `timerCalc` function to perform\n * calculated timeout retries, such as exponential backoff.\n *\n * @example\n * let reconnectTimer = new Timer(() => this.connect(), function(tries){\n * return [1000, 5000, 10000][tries - 1] || 10000\n * })\n * reconnectTimer.scheduleTimeout() // fires after 1000\n * reconnectTimer.scheduleTimeout() // fires after 5000\n * reconnectTimer.reset()\n * reconnectTimer.scheduleTimeout() // fires after 1000\n *\n * @param {Function} callback\n * @param {Function} timerCalc\n */\nexport default class Timer {\n constructor(callback, timerCalc){\n this.callback = callback\n this.timerCalc = timerCalc\n this.timer = null\n this.tries = 0\n }\n\n reset(){\n this.tries = 0\n clearTimeout(this.timer)\n }\n\n /**\n * Cancels any previous scheduleTimeout and schedules callback\n */\n scheduleTimeout(){\n clearTimeout(this.timer)\n\n this.timer = setTimeout(() => {\n this.tries = this.tries + 1\n this.callback()\n }, this.timerCalc(this.tries + 1))\n }\n}\n", "import {closure} from \"./utils\"\nimport {\n CHANNEL_EVENTS,\n CHANNEL_STATES,\n} from \"./constants\"\n\nimport Push from \"./push\"\nimport Timer from \"./timer\"\n\n/**\n *\n * @param {string} topic\n * @param {(Object|function)} params\n * @param {Socket} socket\n */\nexport default class Channel {\n constructor(topic, params, socket){\n this.state = CHANNEL_STATES.closed\n this.topic = topic\n this.params = closure(params || {})\n this.socket = socket\n this.bindings = []\n this.bindingRef = 0\n this.timeout = this.socket.timeout\n this.joinedOnce = false\n this.joinPush = new Push(this, CHANNEL_EVENTS.join, this.params, this.timeout)\n this.pushBuffer = []\n this.stateChangeRefs = []\n\n this.rejoinTimer = new Timer(() => {\n if(this.socket.isConnected()){ this.rejoin() }\n }, this.socket.rejoinAfterMs)\n this.stateChangeRefs.push(this.socket.onError(() => this.rejoinTimer.reset()))\n this.stateChangeRefs.push(this.socket.onOpen(() => {\n this.rejoinTimer.reset()\n if(this.isErrored()){ this.rejoin() }\n })\n )\n this.joinPush.receive(\"ok\", () => {\n this.state = CHANNEL_STATES.joined\n this.rejoinTimer.reset()\n this.pushBuffer.forEach(pushEvent => pushEvent.send())\n this.pushBuffer = []\n })\n this.joinPush.receive(\"error\", () => {\n this.state = CHANNEL_STATES.errored\n if(this.socket.isConnected()){ this.rejoinTimer.scheduleTimeout() }\n })\n this.onClose(() => {\n this.rejoinTimer.reset()\n if(this.socket.hasLogger()) this.socket.log(\"channel\", `close ${this.topic} ${this.joinRef()}`)\n this.state = CHANNEL_STATES.closed\n this.socket.remove(this)\n })\n this.onError(reason => {\n if(this.socket.hasLogger()) this.socket.log(\"channel\", `error ${this.topic}`, reason)\n if(this.isJoining()){ this.joinPush.reset() }\n this.state = CHANNEL_STATES.errored\n if(this.socket.isConnected()){ this.rejoinTimer.scheduleTimeout() }\n })\n this.joinPush.receive(\"timeout\", () => {\n if(this.socket.hasLogger()) this.socket.log(\"channel\", `timeout ${this.topic} (${this.joinRef()})`, this.joinPush.timeout)\n let leavePush = new Push(this, CHANNEL_EVENTS.leave, closure({}), this.timeout)\n leavePush.send()\n this.state = CHANNEL_STATES.errored\n this.joinPush.reset()\n if(this.socket.isConnected()){ this.rejoinTimer.scheduleTimeout() }\n })\n this.on(CHANNEL_EVENTS.reply, (payload, ref) => {\n this.trigger(this.replyEventName(ref), payload)\n })\n }\n\n /**\n * Join the channel\n * @param {integer} timeout\n * @returns {Push}\n */\n join(timeout = this.timeout){\n if(this.joinedOnce){\n throw new Error(\"tried to join multiple times. 'join' can only be called a single time per channel instance\")\n } else {\n this.timeout = timeout\n this.joinedOnce = true\n this.rejoin()\n return this.joinPush\n }\n }\n\n /**\n * Hook into channel close\n * @param {Function} callback\n */\n onClose(callback){\n this.on(CHANNEL_EVENTS.close, callback)\n }\n\n /**\n * Hook into channel errors\n * @param {Function} callback\n */\n onError(callback){\n return this.on(CHANNEL_EVENTS.error, reason => callback(reason))\n }\n\n /**\n * Subscribes on channel events\n *\n * Subscription returns a ref counter, which can be used later to\n * unsubscribe the exact event listener\n *\n * @example\n * const ref1 = channel.on(\"event\", do_stuff)\n * const ref2 = channel.on(\"event\", do_other_stuff)\n * channel.off(\"event\", ref1)\n * // Since unsubscription, do_stuff won't fire,\n * // while do_other_stuff will keep firing on the \"event\"\n *\n * @param {string} event\n * @param {Function} callback\n * @returns {integer} ref\n */\n on(event, callback){\n let ref = this.bindingRef++\n this.bindings.push({event, ref, callback})\n return ref\n }\n\n /**\n * Unsubscribes off of channel events\n *\n * Use the ref returned from a channel.on() to unsubscribe one\n * handler, or pass nothing for the ref to unsubscribe all\n * handlers for the given event.\n *\n * @example\n * // Unsubscribe the do_stuff handler\n * const ref1 = channel.on(\"event\", do_stuff)\n * channel.off(\"event\", ref1)\n *\n * // Unsubscribe all handlers from event\n * channel.off(\"event\")\n *\n * @param {string} event\n * @param {integer} ref\n */\n off(event, ref){\n this.bindings = this.bindings.filter((bind) => {\n return !(bind.event === event && (typeof ref === \"undefined\" || ref === bind.ref))\n })\n }\n\n /**\n * @private\n */\n canPush(){ return this.socket.isConnected() && this.isJoined() }\n\n /**\n * Sends a message `event` to phoenix with the payload `payload`.\n * Phoenix receives this in the `handle_in(event, payload, socket)`\n * function. if phoenix replies or it times out (default 10000ms),\n * then optionally the reply can be received.\n *\n * @example\n * channel.push(\"event\")\n * .receive(\"ok\", payload => console.log(\"phoenix replied:\", payload))\n * .receive(\"error\", err => console.log(\"phoenix errored\", err))\n * .receive(\"timeout\", () => console.log(\"timed out pushing\"))\n * @param {string} event\n * @param {Object} payload\n * @param {number} [timeout]\n * @returns {Push}\n */\n push(event, payload, timeout = this.timeout){\n payload = payload || {}\n if(!this.joinedOnce){\n throw new Error(`tried to push '${event}' to '${this.topic}' before joining. Use channel.join() before pushing events`)\n }\n let pushEvent = new Push(this, event, function (){ return payload }, timeout)\n if(this.canPush()){\n pushEvent.send()\n } else {\n pushEvent.startTimeout()\n this.pushBuffer.push(pushEvent)\n }\n\n return pushEvent\n }\n\n /** Leaves the channel\n *\n * Unsubscribes from server events, and\n * instructs channel to terminate on server\n *\n * Triggers onClose() hooks\n *\n * To receive leave acknowledgements, use the `receive`\n * hook to bind to the server ack, ie:\n *\n * @example\n * channel.leave().receive(\"ok\", () => alert(\"left!\") )\n *\n * @param {integer} timeout\n * @returns {Push}\n */\n leave(timeout = this.timeout){\n this.rejoinTimer.reset()\n this.joinPush.cancelTimeout()\n\n this.state = CHANNEL_STATES.leaving\n let onClose = () => {\n if(this.socket.hasLogger()) this.socket.log(\"channel\", `leave ${this.topic}`)\n this.trigger(CHANNEL_EVENTS.close, \"leave\")\n }\n let leavePush = new Push(this, CHANNEL_EVENTS.leave, closure({}), timeout)\n leavePush.receive(\"ok\", () => onClose())\n .receive(\"timeout\", () => onClose())\n leavePush.send()\n if(!this.canPush()){ leavePush.trigger(\"ok\", {}) }\n\n return leavePush\n }\n\n /**\n * Overridable message hook\n *\n * Receives all events for specialized message handling\n * before dispatching to the channel callbacks.\n *\n * Must return the payload, modified or unmodified\n * @param {string} event\n * @param {Object} payload\n * @param {integer} ref\n * @returns {Object}\n */\n onMessage(_event, payload, _ref){ return payload }\n\n /**\n * @private\n */\n isMember(topic, event, payload, joinRef){\n if(this.topic !== topic){ return false }\n\n if(joinRef && joinRef !== this.joinRef()){\n if(this.socket.hasLogger()) this.socket.log(\"channel\", \"dropping outdated message\", {topic, event, payload, joinRef})\n return false\n } else {\n return true\n }\n }\n\n /**\n * @private\n */\n joinRef(){ return this.joinPush.ref }\n\n /**\n * @private\n */\n rejoin(timeout = this.timeout){\n if(this.isLeaving()){ return }\n this.socket.leaveOpenTopic(this.topic)\n this.state = CHANNEL_STATES.joining\n this.joinPush.resend(timeout)\n }\n\n /**\n * @private\n */\n trigger(event, payload, ref, joinRef){\n let handledPayload = this.onMessage(event, payload, ref, joinRef)\n if(payload && !handledPayload){ throw new Error(\"channel onMessage callbacks must return the payload, modified or unmodified\") }\n\n let eventBindings = this.bindings.filter(bind => bind.event === event)\n\n for(let i = 0; i < eventBindings.length; i++){\n let bind = eventBindings[i]\n bind.callback(handledPayload, ref, joinRef || this.joinRef())\n }\n }\n\n /**\n * @private\n */\n replyEventName(ref){ return `chan_reply_${ref}` }\n\n /**\n * @private\n */\n isClosed(){ return this.state === CHANNEL_STATES.closed }\n\n /**\n * @private\n */\n isErrored(){ return this.state === CHANNEL_STATES.errored }\n\n /**\n * @private\n */\n isJoined(){ return this.state === CHANNEL_STATES.joined }\n\n /**\n * @private\n */\n isJoining(){ return this.state === CHANNEL_STATES.joining }\n\n /**\n * @private\n */\n isLeaving(){ return this.state === CHANNEL_STATES.leaving }\n}\n", "import {\n global,\n XHR_STATES\n} from \"./constants\"\n\nexport default class Ajax {\n\n static request(method, endPoint, accept, body, timeout, ontimeout, callback){\n if(global.XDomainRequest){\n let req = new global.XDomainRequest() // IE8, IE9\n this.xdomainRequest(req, method, endPoint, body, timeout, ontimeout, callback)\n } else {\n let req = new global.XMLHttpRequest() // IE7+, Firefox, Chrome, Opera, Safari\n this.xhrRequest(req, method, endPoint, accept, body, timeout, ontimeout, callback)\n }\n }\n\n static xdomainRequest(req, method, endPoint, body, timeout, ontimeout, callback){\n req.timeout = timeout\n req.open(method, endPoint)\n req.onload = () => {\n let response = this.parseJSON(req.responseText)\n callback && callback(response)\n }\n if(ontimeout){ req.ontimeout = ontimeout }\n\n // Work around bug in IE9 that requires an attached onprogress handler\n req.onprogress = () => { }\n\n req.send(body)\n }\n\n static xhrRequest(req, method, endPoint, accept, body, timeout, ontimeout, callback){\n req.open(method, endPoint, true)\n req.timeout = timeout\n req.setRequestHeader(\"Content-Type\", accept)\n req.onerror = () => { callback && callback(null) }\n req.onreadystatechange = () => {\n if(req.readyState === XHR_STATES.complete && callback){\n let response = this.parseJSON(req.responseText)\n callback(response)\n }\n }\n if(ontimeout){ req.ontimeout = ontimeout }\n\n req.send(body)\n }\n\n static parseJSON(resp){\n if(!resp || resp === \"\"){ return null }\n\n try {\n return JSON.parse(resp)\n } catch (e){\n console && console.log(\"failed to parse JSON response\", resp)\n return null\n }\n }\n\n static serialize(obj, parentKey){\n let queryStr = []\n for(var key in obj){\n if(!Object.prototype.hasOwnProperty.call(obj, key)){ continue }\n let paramKey = parentKey ? `${parentKey}[${key}]` : key\n let paramVal = obj[key]\n if(typeof paramVal === \"object\"){\n queryStr.push(this.serialize(paramVal, paramKey))\n } else {\n queryStr.push(encodeURIComponent(paramKey) + \"=\" + encodeURIComponent(paramVal))\n }\n }\n return queryStr.join(\"&\")\n }\n\n static appendParams(url, params){\n if(Object.keys(params).length === 0){ return url }\n\n let prefix = url.match(/\\?/) ? \"&\" : \"?\"\n return `${url}${prefix}${this.serialize(params)}`\n }\n}\n", "import {\n SOCKET_STATES,\n TRANSPORTS\n} from \"./constants\"\n\nimport Ajax from \"./ajax\"\n\nexport default class LongPoll {\n\n constructor(endPoint){\n this.endPoint = null\n this.token = null\n this.skipHeartbeat = true\n this.onopen = function (){ } // noop\n this.onerror = function (){ } // noop\n this.onmessage = function (){ } // noop\n this.onclose = function (){ } // noop\n this.pollEndpoint = this.normalizeEndpoint(endPoint)\n this.readyState = SOCKET_STATES.connecting\n this.poll()\n }\n\n normalizeEndpoint(endPoint){\n return (endPoint\n .replace(\"ws://\", \"http://\")\n .replace(\"wss://\", \"https://\")\n .replace(new RegExp(\"(.*)\\/\" + TRANSPORTS.websocket), \"$1/\" + TRANSPORTS.longpoll))\n }\n\n endpointURL(){\n return Ajax.appendParams(this.pollEndpoint, {token: this.token})\n }\n\n closeAndRetry(code, reason, wasClean){\n this.close(code, reason, wasClean)\n this.readyState = SOCKET_STATES.connecting\n }\n\n ontimeout(){\n this.onerror(\"timeout\")\n this.closeAndRetry(1005, \"timeout\", false)\n }\n\n poll(){\n if(!(this.readyState === SOCKET_STATES.open || this.readyState === SOCKET_STATES.connecting)){ return }\n\n Ajax.request(\"GET\", this.endpointURL(), \"application/json\", null, this.timeout, this.ontimeout.bind(this), (resp) => {\n if(resp){\n var {status, token, messages} = resp\n this.token = token\n } else {\n status = 0\n }\n\n switch(status){\n case 200:\n messages.forEach(msg => {\n // Tasks are what things like event handlers, setTimeout callbacks,\n // promise resolves and more are run within.\n // In modern browsers, there are two different kinds of tasks,\n // microtasks and macrotasks.\n // Microtasks are mainly used for Promises, while macrotasks are\n // used for everything else.\n // Microtasks always have priority over macrotasks. If the JS engine\n // is looking for a task to run, it will always try to empty the\n // microtask queue before attempting to run anything from the\n // macrotask queue.\n //\n // For the WebSocket transport, messages always arrive in their own\n // event. This means that if any promises are resolved from within,\n // their callbacks will always finish execution by the time the\n // next message event handler is run.\n //\n // In order to emulate this behaviour, we need to make sure each\n // onmessage handler is run within it's own macrotask.\n setTimeout(() => {\n this.onmessage({data: msg})\n }, 0)\n })\n this.poll()\n break\n case 204:\n this.poll()\n break\n case 410:\n this.readyState = SOCKET_STATES.open\n this.onopen({})\n this.poll()\n break\n case 403:\n this.onerror(403)\n this.close(1008, \"forbidden\", false)\n break\n case 0:\n case 500:\n this.onerror(500)\n this.closeAndRetry(1011, \"internal server error\", 500)\n break\n default: throw new Error(`unhandled poll status ${status}`)\n }\n })\n }\n\n send(body){\n Ajax.request(\"POST\", this.endpointURL(), \"application/json\", body, this.timeout, this.onerror.bind(this, \"timeout\"), (resp) => {\n if(!resp || resp.status !== 200){\n this.onerror(resp && resp.status)\n this.closeAndRetry(1011, \"internal server error\", false)\n }\n })\n }\n\n close(code, reason, wasClean){\n this.readyState = SOCKET_STATES.closed\n let opts = Object.assign({code: 1000, reason: undefined, wasClean: true}, {code, reason, wasClean})\n if(typeof(CloseEvent) !== \"undefined\"){\n this.onclose(new CloseEvent(\"close\", opts))\n } else {\n this.onclose(opts)\n }\n }\n}\n", "/**\n * Initializes the Presence\n * @param {Channel} channel - The Channel\n * @param {Object} opts - The options,\n * for example `{events: {state: \"state\", diff: \"diff\"}}`\n */\nexport default class Presence {\n\n constructor(channel, opts = {}){\n let events = opts.events || {state: \"presence_state\", diff: \"presence_diff\"}\n this.state = {}\n this.pendingDiffs = []\n this.channel = channel\n this.joinRef = null\n this.caller = {\n onJoin: function (){ },\n onLeave: function (){ },\n onSync: function (){ }\n }\n\n this.channel.on(events.state, newState => {\n let {onJoin, onLeave, onSync} = this.caller\n\n this.joinRef = this.channel.joinRef()\n this.state = Presence.syncState(this.state, newState, onJoin, onLeave)\n\n this.pendingDiffs.forEach(diff => {\n this.state = Presence.syncDiff(this.state, diff, onJoin, onLeave)\n })\n this.pendingDiffs = []\n onSync()\n })\n\n this.channel.on(events.diff, diff => {\n let {onJoin, onLeave, onSync} = this.caller\n\n if(this.inPendingSyncState()){\n this.pendingDiffs.push(diff)\n } else {\n this.state = Presence.syncDiff(this.state, diff, onJoin, onLeave)\n onSync()\n }\n })\n }\n\n onJoin(callback){ this.caller.onJoin = callback }\n\n onLeave(callback){ this.caller.onLeave = callback }\n\n onSync(callback){ this.caller.onSync = callback }\n\n list(by){ return Presence.list(this.state, by) }\n\n inPendingSyncState(){\n return !this.joinRef || (this.joinRef !== this.channel.joinRef())\n }\n\n // lower-level public static API\n\n /**\n * Used to sync the list of presences on the server\n * with the client's state. An optional `onJoin` and `onLeave` callback can\n * be provided to react to changes in the client's local presences across\n * disconnects and reconnects with the server.\n *\n * @returns {Presence}\n */\n static syncState(currentState, newState, onJoin, onLeave){\n let state = this.clone(currentState)\n let joins = {}\n let leaves = {}\n\n this.map(state, (key, presence) => {\n if(!newState[key]){\n leaves[key] = presence\n }\n })\n this.map(newState, (key, newPresence) => {\n let currentPresence = state[key]\n if(currentPresence){\n let newRefs = newPresence.metas.map(m => m.phx_ref)\n let curRefs = currentPresence.metas.map(m => m.phx_ref)\n let joinedMetas = newPresence.metas.filter(m => curRefs.indexOf(m.phx_ref) < 0)\n let leftMetas = currentPresence.metas.filter(m => newRefs.indexOf(m.phx_ref) < 0)\n if(joinedMetas.length > 0){\n joins[key] = newPresence\n joins[key].metas = joinedMetas\n }\n if(leftMetas.length > 0){\n leaves[key] = this.clone(currentPresence)\n leaves[key].metas = leftMetas\n }\n } else {\n joins[key] = newPresence\n }\n })\n return this.syncDiff(state, {joins: joins, leaves: leaves}, onJoin, onLeave)\n }\n\n /**\n *\n * Used to sync a diff of presence join and leave\n * events from the server, as they happen. Like `syncState`, `syncDiff`\n * accepts optional `onJoin` and `onLeave` callbacks to react to a user\n * joining or leaving from a device.\n *\n * @returns {Presence}\n */\n static syncDiff(state, diff, onJoin, onLeave){\n let {joins, leaves} = this.clone(diff)\n if(!onJoin){ onJoin = function (){ } }\n if(!onLeave){ onLeave = function (){ } }\n\n this.map(joins, (key, newPresence) => {\n let currentPresence = state[key]\n state[key] = this.clone(newPresence)\n if(currentPresence){\n let joinedRefs = state[key].metas.map(m => m.phx_ref)\n let curMetas = currentPresence.metas.filter(m => joinedRefs.indexOf(m.phx_ref) < 0)\n state[key].metas.unshift(...curMetas)\n }\n onJoin(key, currentPresence, newPresence)\n })\n this.map(leaves, (key, leftPresence) => {\n let currentPresence = state[key]\n if(!currentPresence){ return }\n let refsToRemove = leftPresence.metas.map(m => m.phx_ref)\n currentPresence.metas = currentPresence.metas.filter(p => {\n return refsToRemove.indexOf(p.phx_ref) < 0\n })\n onLeave(key, currentPresence, leftPresence)\n if(currentPresence.metas.length === 0){\n delete state[key]\n }\n })\n return state\n }\n\n /**\n * Returns the array of presences, with selected metadata.\n *\n * @param {Object} presences\n * @param {Function} chooser\n *\n * @returns {Presence}\n */\n static list(presences, chooser){\n if(!chooser){ chooser = function (key, pres){ return pres } }\n\n return this.map(presences, (key, presence) => {\n return chooser(key, presence)\n })\n }\n\n // private\n\n static map(obj, func){\n return Object.getOwnPropertyNames(obj).map(key => func(key, obj[key]))\n }\n\n static clone(obj){ return JSON.parse(JSON.stringify(obj)) }\n}\n", "/* The default serializer for encoding and decoding messages */\nimport {\n CHANNEL_EVENTS\n} from \"./constants\"\n\nexport default {\n HEADER_LENGTH: 1,\n META_LENGTH: 4,\n KINDS: {push: 0, reply: 1, broadcast: 2},\n\n encode(msg, callback){\n if(msg.payload.constructor === ArrayBuffer){\n return callback(this.binaryEncode(msg))\n } else {\n let payload = [msg.join_ref, msg.ref, msg.topic, msg.event, msg.payload]\n return callback(JSON.stringify(payload))\n }\n },\n\n decode(rawPayload, callback){\n if(rawPayload.constructor === ArrayBuffer){\n return callback(this.binaryDecode(rawPayload))\n } else {\n let [join_ref, ref, topic, event, payload] = JSON.parse(rawPayload)\n return callback({join_ref, ref, topic, event, payload})\n }\n },\n\n // private\n\n binaryEncode(message){\n let {join_ref, ref, event, topic, payload} = message\n let metaLength = this.META_LENGTH + join_ref.length + ref.length + topic.length + event.length\n let header = new ArrayBuffer(this.HEADER_LENGTH + metaLength)\n let view = new DataView(header)\n let offset = 0\n\n view.setUint8(offset++, this.KINDS.push) // kind\n view.setUint8(offset++, join_ref.length)\n view.setUint8(offset++, ref.length)\n view.setUint8(offset++, topic.length)\n view.setUint8(offset++, event.length)\n Array.from(join_ref, char => view.setUint8(offset++, char.charCodeAt(0)))\n Array.from(ref, char => view.setUint8(offset++, char.charCodeAt(0)))\n Array.from(topic, char => view.setUint8(offset++, char.charCodeAt(0)))\n Array.from(event, char => view.setUint8(offset++, char.charCodeAt(0)))\n\n var combined = new Uint8Array(header.byteLength + payload.byteLength)\n combined.set(new Uint8Array(header), 0)\n combined.set(new Uint8Array(payload), header.byteLength)\n\n return combined.buffer\n },\n\n binaryDecode(buffer){\n let view = new DataView(buffer)\n let kind = view.getUint8(0)\n let decoder = new TextDecoder()\n switch(kind){\n case this.KINDS.push: return this.decodePush(buffer, view, decoder)\n case this.KINDS.reply: return this.decodeReply(buffer, view, decoder)\n case this.KINDS.broadcast: return this.decodeBroadcast(buffer, view, decoder)\n }\n },\n\n decodePush(buffer, view, decoder){\n let joinRefSize = view.getUint8(1)\n let topicSize = view.getUint8(2)\n let eventSize = view.getUint8(3)\n let offset = this.HEADER_LENGTH + this.META_LENGTH - 1 // pushes have no ref\n let joinRef = decoder.decode(buffer.slice(offset, offset + joinRefSize))\n offset = offset + joinRefSize\n let topic = decoder.decode(buffer.slice(offset, offset + topicSize))\n offset = offset + topicSize\n let event = decoder.decode(buffer.slice(offset, offset + eventSize))\n offset = offset + eventSize\n let data = buffer.slice(offset, buffer.byteLength)\n return {join_ref: joinRef, ref: null, topic: topic, event: event, payload: data}\n },\n\n decodeReply(buffer, view, decoder){\n let joinRefSize = view.getUint8(1)\n let refSize = view.getUint8(2)\n let topicSize = view.getUint8(3)\n let eventSize = view.getUint8(4)\n let offset = this.HEADER_LENGTH + this.META_LENGTH\n let joinRef = decoder.decode(buffer.slice(offset, offset + joinRefSize))\n offset = offset + joinRefSize\n let ref = decoder.decode(buffer.slice(offset, offset + refSize))\n offset = offset + refSize\n let topic = decoder.decode(buffer.slice(offset, offset + topicSize))\n offset = offset + topicSize\n let event = decoder.decode(buffer.slice(offset, offset + eventSize))\n offset = offset + eventSize\n let data = buffer.slice(offset, buffer.byteLength)\n let payload = {status: event, response: data}\n return {join_ref: joinRef, ref: ref, topic: topic, event: CHANNEL_EVENTS.reply, payload: payload}\n },\n\n decodeBroadcast(buffer, view, decoder){\n let topicSize = view.getUint8(1)\n let eventSize = view.getUint8(2)\n let offset = this.HEADER_LENGTH + 2\n let topic = decoder.decode(buffer.slice(offset, offset + topicSize))\n offset = offset + topicSize\n let event = decoder.decode(buffer.slice(offset, offset + eventSize))\n offset = offset + eventSize\n let data = buffer.slice(offset, buffer.byteLength)\n\n return {join_ref: null, ref: null, topic: topic, event: event, payload: data}\n }\n}\n", "import {\n global,\n phxWindow,\n CHANNEL_EVENTS,\n DEFAULT_TIMEOUT,\n DEFAULT_VSN,\n SOCKET_STATES,\n TRANSPORTS,\n WS_CLOSE_NORMAL\n} from \"./constants\"\n\nimport {\n closure\n} from \"./utils\"\n\nimport Ajax from \"./ajax\"\nimport Channel from \"./channel\"\nimport LongPoll from \"./longpoll\"\nimport Serializer from \"./serializer\"\nimport Timer from \"./timer\"\n\n/** Initializes the Socket *\n *\n * For IE8 support use an ES5-shim (https://github.com/es-shims/es5-shim)\n *\n * @param {string} endPoint - The string WebSocket endpoint, ie, `\"ws://example.com/socket\"`,\n * `\"wss://example.com\"`\n * `\"/socket\"` (inherited host & protocol)\n * @param {Object} [opts] - Optional configuration\n * @param {Function} [opts.transport] - The Websocket Transport, for example WebSocket or Phoenix.LongPoll.\n *\n * Defaults to WebSocket with automatic LongPoll fallback.\n * @param {Function} [opts.encode] - The function to encode outgoing messages.\n *\n * Defaults to JSON encoder.\n *\n * @param {Function} [opts.decode] - The function to decode incoming messages.\n *\n * Defaults to JSON:\n *\n * ```javascript\n * (payload, callback) => callback(JSON.parse(payload))\n * ```\n *\n * @param {number} [opts.timeout] - The default timeout in milliseconds to trigger push timeouts.\n *\n * Defaults `DEFAULT_TIMEOUT`\n * @param {number} [opts.heartbeatIntervalMs] - The millisec interval to send a heartbeat message\n * @param {number} [opts.reconnectAfterMs] - The optional function that returns the millsec\n * socket reconnect interval.\n *\n * Defaults to stepped backoff of:\n *\n * ```javascript\n * function(tries){\n * return [10, 50, 100, 150, 200, 250, 500, 1000, 2000][tries - 1] || 5000\n * }\n * ````\n *\n * @param {number} [opts.rejoinAfterMs] - The optional function that returns the millsec\n * rejoin interval for individual channels.\n *\n * ```javascript\n * function(tries){\n * return [1000, 2000, 5000][tries - 1] || 10000\n * }\n * ````\n *\n * @param {Function} [opts.logger] - The optional function for specialized logging, ie:\n *\n * ```javascript\n * function(kind, msg, data) {\n * console.log(`${kind}: ${msg}`, data)\n * }\n * ```\n *\n * @param {number} [opts.longpollerTimeout] - The maximum timeout of a long poll AJAX request.\n *\n * Defaults to 20s (double the server long poll timer).\n *\n * @param {(Object|function)} [opts.params] - The optional params to pass when connecting\n * @param {string} [opts.binaryType] - The binary type to use for binary WebSocket frames.\n *\n * Defaults to \"arraybuffer\"\n *\n * @param {vsn} [opts.vsn] - The serializer's protocol version to send on connect.\n *\n * Defaults to DEFAULT_VSN.\n*/\nexport default class Socket {\n constructor(endPoint, opts = {}){\n this.stateChangeCallbacks = {open: [], close: [], error: [], message: []}\n this.channels = []\n this.sendBuffer = []\n this.ref = 0\n this.timeout = opts.timeout || DEFAULT_TIMEOUT\n this.transport = opts.transport || global.WebSocket || LongPoll\n this.establishedConnections = 0\n this.defaultEncoder = Serializer.encode.bind(Serializer)\n this.defaultDecoder = Serializer.decode.bind(Serializer)\n this.closeWasClean = false\n this.binaryType = opts.binaryType || \"arraybuffer\"\n this.connectClock = 1\n if(this.transport !== LongPoll){\n this.encode = opts.encode || this.defaultEncoder\n this.decode = opts.decode || this.defaultDecoder\n } else {\n this.encode = this.defaultEncoder\n this.decode = this.defaultDecoder\n }\n let awaitingConnectionOnPageShow = null\n if(phxWindow && phxWindow.addEventListener){\n phxWindow.addEventListener(\"pagehide\", _e => {\n if(this.conn){\n this.disconnect()\n awaitingConnectionOnPageShow = this.connectClock\n }\n })\n phxWindow.addEventListener(\"pageshow\", _e => {\n if(awaitingConnectionOnPageShow === this.connectClock){\n awaitingConnectionOnPageShow = null\n this.connect()\n }\n })\n }\n this.heartbeatIntervalMs = opts.heartbeatIntervalMs || 30000\n this.rejoinAfterMs = (tries) => {\n if(opts.rejoinAfterMs){\n return opts.rejoinAfterMs(tries)\n } else {\n return [1000, 2000, 5000][tries - 1] || 10000\n }\n }\n this.reconnectAfterMs = (tries) => {\n if(opts.reconnectAfterMs){\n return opts.reconnectAfterMs(tries)\n } else {\n return [10, 50, 100, 150, 200, 250, 500, 1000, 2000][tries - 1] || 5000\n }\n }\n this.logger = opts.logger || null\n this.longpollerTimeout = opts.longpollerTimeout || 20000\n this.params = closure(opts.params || {})\n this.endPoint = `${endPoint}/${TRANSPORTS.websocket}`\n this.vsn = opts.vsn || DEFAULT_VSN\n this.heartbeatTimer = null\n this.pendingHeartbeatRef = null\n this.reconnectTimer = new Timer(() => {\n this.teardown(() => this.connect())\n }, this.reconnectAfterMs)\n }\n\n /**\n * Disconnects and replaces the active transport\n *\n * @param {Function} newTransport - The new transport class to instantiate\n *\n */\n replaceTransport(newTransport){\n this.connectClock++\n this.closeWasClean = true\n this.reconnectTimer.reset()\n if(this.conn){\n this.conn.close()\n this.conn = null\n }\n this.transport = newTransport\n }\n\n /**\n * Returns the socket protocol\n *\n * @returns {string}\n */\n protocol(){ return location.protocol.match(/^https/) ? \"wss\" : \"ws\" }\n\n /**\n * The fully qualifed socket url\n *\n * @returns {string}\n */\n endPointURL(){\n let uri = Ajax.appendParams(\n Ajax.appendParams(this.endPoint, this.params()), {vsn: this.vsn})\n if(uri.charAt(0) !== \"/\"){ return uri }\n if(uri.charAt(1) === \"/\"){ return `${this.protocol()}:${uri}` }\n\n return `${this.protocol()}://${location.host}${uri}`\n }\n\n /**\n * Disconnects the socket\n *\n * See https://developer.mozilla.org/en-US/docs/Web/API/CloseEvent#Status_codes for valid status codes.\n *\n * @param {Function} callback - Optional callback which is called after socket is disconnected.\n * @param {integer} code - A status code for disconnection (Optional).\n * @param {string} reason - A textual description of the reason to disconnect. (Optional)\n */\n disconnect(callback, code, reason){\n this.connectClock++\n this.closeWasClean = true\n this.reconnectTimer.reset()\n this.teardown(callback, code, reason)\n }\n\n /**\n *\n * @param {Object} params - The params to send when connecting, for example `{user_id: userToken}`\n *\n * Passing params to connect is deprecated; pass them in the Socket constructor instead:\n * `new Socket(\"/socket\", {params: {user_id: userToken}})`.\n */\n connect(params){\n this.connectClock++\n if(params){\n console && console.log(\"passing params to connect is deprecated. Instead pass :params to the Socket constructor\")\n this.params = closure(params)\n }\n if(this.conn){ return }\n this.closeWasClean = false\n this.conn = new this.transport(this.endPointURL())\n this.conn.binaryType = this.binaryType\n this.conn.timeout = this.longpollerTimeout\n this.conn.onopen = () => this.onConnOpen()\n this.conn.onerror = error => this.onConnError(error)\n this.conn.onmessage = event => this.onConnMessage(event)\n this.conn.onclose = event => this.onConnClose(event)\n }\n\n /**\n * Logs the message. Override `this.logger` for specialized logging. noops by default\n * @param {string} kind\n * @param {string} msg\n * @param {Object} data\n */\n log(kind, msg, data){ this.logger(kind, msg, data) }\n\n /**\n * Returns true if a logger has been set on this socket.\n */\n hasLogger(){ return this.logger !== null }\n\n /**\n * Registers callbacks for connection open events\n *\n * @example socket.onOpen(function(){ console.info(\"the socket was opened\") })\n *\n * @param {Function} callback\n */\n onOpen(callback){\n let ref = this.makeRef()\n this.stateChangeCallbacks.open.push([ref, callback])\n return ref\n }\n\n /**\n * Registers callbacks for connection close events\n * @param {Function} callback\n */\n onClose(callback){\n let ref = this.makeRef()\n this.stateChangeCallbacks.close.push([ref, callback])\n return ref\n }\n\n /**\n * Registers callbacks for connection error events\n *\n * @example socket.onError(function(error){ alert(\"An error occurred\") })\n *\n * @param {Function} callback\n */\n onError(callback){\n let ref = this.makeRef()\n this.stateChangeCallbacks.error.push([ref, callback])\n return ref\n }\n\n /**\n * Registers callbacks for connection message events\n * @param {Function} callback\n */\n onMessage(callback){\n let ref = this.makeRef()\n this.stateChangeCallbacks.message.push([ref, callback])\n return ref\n }\n\n /**\n * Pings the server and invokes the callback with the RTT in milliseconds\n * @param {Function} callback\n *\n * Returns true if the ping was pushed or false if unable to be pushed.\n */\n ping(callback){\n if(!this.isConnected()){ return false }\n let ref = this.makeRef()\n let startTime = Date.now()\n this.push({topic: \"phoenix\", event: \"heartbeat\", payload: {}, ref: ref})\n let onMsgRef = this.onMessage(msg => {\n if(msg.ref === ref){\n this.off([onMsgRef])\n callback(Date.now() - startTime)\n }\n })\n return true\n }\n\n /**\n * @private\n */\n onConnOpen(){\n if(this.hasLogger()) this.log(\"transport\", `connected to ${this.endPointURL()}`)\n this.closeWasClean = false\n this.establishedConnections++\n this.flushSendBuffer()\n this.reconnectTimer.reset()\n this.resetHeartbeat()\n this.stateChangeCallbacks.open.forEach(([, callback]) => callback())\n }\n\n /**\n * @private\n */\n\n heartbeatTimeout(){\n if(this.pendingHeartbeatRef){\n this.pendingHeartbeatRef = null\n if(this.hasLogger()){ this.log(\"transport\", \"heartbeat timeout. 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|| this.conn.readyState === SOCKET_STATES.closed){\n callback()\n return\n }\n\n setTimeout(() => {\n this.waitForSocketClosed(callback, tries + 1)\n }, 150 * tries)\n }\n\n onConnClose(event){\n let closeCode = event && event.code\n if(this.hasLogger()) this.log(\"transport\", \"close\", event)\n this.triggerChanError()\n clearTimeout(this.heartbeatTimer)\n if(!this.closeWasClean && closeCode !== 1000){\n this.reconnectTimer.scheduleTimeout()\n }\n this.stateChangeCallbacks.close.forEach(([, callback]) => callback(event))\n }\n\n /**\n * @private\n */\n onConnError(error){\n if(this.hasLogger()) this.log(\"transport\", error)\n let transportBefore = this.transport\n let establishedBefore = this.establishedConnections\n this.stateChangeCallbacks.error.forEach(([, callback]) => {\n callback(error, transportBefore, establishedBefore)\n })\n if(transportBefore === this.transport || establishedBefore > 0){\n this.triggerChanError()\n }\n }\n\n /**\n * @private\n */\n triggerChanError(){\n this.channels.forEach(channel => {\n if(!(channel.isErrored() || channel.isLeaving() || channel.isClosed())){\n channel.trigger(CHANNEL_EVENTS.error)\n }\n })\n }\n\n /**\n * @returns {string}\n */\n connectionState(){\n switch(this.conn && this.conn.readyState){\n case SOCKET_STATES.connecting: return \"connecting\"\n case SOCKET_STATES.open: return \"open\"\n case SOCKET_STATES.closing: return \"closing\"\n default: return \"closed\"\n }\n }\n\n /**\n * @returns {boolean}\n */\n isConnected(){ return this.connectionState() === \"open\" }\n\n /**\n * @private\n *\n * @param {Channel}\n */\n remove(channel){\n this.off(channel.stateChangeRefs)\n this.channels = this.channels.filter(c => c.joinRef() !== channel.joinRef())\n }\n\n /**\n * Removes `onOpen`, `onClose`, `onError,` and `onMessage` registrations.\n *\n * @param {refs} - list of refs returned by calls to\n * `onOpen`, `onClose`, `onError,` and `onMessage`\n */\n off(refs){\n for(let key in this.stateChangeCallbacks){\n 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"names": [] } diff --git a/priv/static/phoenix.js b/priv/static/phoenix.js index d938c68eb7..176dc2a895 100644 --- a/priv/static/phoenix.js +++ b/priv/static/phoenix.js @@ -1099,6 +1099,9 @@ var Phoenix = (() => { } if (this.hasLogger()) this.log("receive", `${payload.status || ""} ${topic} ${event} ${ref && "(" + ref + ")" || ""}`, payload); + if (topic === "phoenix") { + this.onPhoenixMessage(event, payload, ref, join_ref); + } for (let i = 0; i < this.channels.length; i++) { const channel = this.channels[i]; if (!channel.isMember(topic, event, payload, join_ref)) { @@ -1112,6 +1115,11 @@ var Phoenix = (() => { } }); } + onPhoenixMessage(event, payload, ref, join_ref) { + if (event === "phx_error") { + this.onConnError(payload); + } + } leaveOpenTopic(topic) { let dupChannel = this.channels.find((c) => c.topic === topic && (c.isJoined() || c.isJoining())); if (dupChannel) { diff --git a/priv/static/phoenix.min.js b/priv/static/phoenix.min.js index 2d1dee9f4d..b4c9aa9155 100644 --- a/priv/static/phoenix.min.js +++ b/priv/static/phoenix.min.js @@ -1 +1 @@ -var Phoenix=(()=>{var w=Object.defineProperty;var U=Object.getOwnPropertyDescriptor;var M=Object.getOwnPropertyNames;var $=Object.prototype.hasOwnProperty;var P=(h,e)=>{for(var t in e)w(h,t,{get:e[t],enumerable:!0})},B=(h,e,t,i)=>{if(e&&typeof e=="object"||typeof e=="function")for(let s of M(e))!$.call(h,s)&&s!==t&&w(h,s,{get:()=>e[s],enumerable:!(i=U(e,s))||i.enumerable});return h};var J=h=>B(w({},"__esModule",{value:!0}),h);var I={};P(I,{Channel:()=>j,LongPoll:()=>E,Presence:()=>g,Serializer:()=>y,Socket:()=>k});var v=h=>typeof h=="function"?h:function(){return h};var z=typeof self!="undefined"?self:null,A=typeof window!="undefined"?window:null,S=z||A||S,N="2.0.0",d={connecting:0,open:1,closing:2,closed:3},O=1e4,H=1e3,u={closed:"closed",errored:"errored",joined:"joined",joining:"joining",leaving:"leaving"},p={close:"phx_close",error:"phx_error",join:"phx_join",reply:"phx_reply",leave:"phx_leave"},L={longpoll:"longpoll",websocket:"websocket"},D={complete:4};var T=class{constructor(e,t,i,s){this.channel=e,this.event=t,this.payload=i||function(){return{}},this.receivedResp=null,this.timeout=s,this.timeoutTimer=null,this.recHooks=[],this.sent=!1}resend(e){this.timeout=e,this.reset(),this.send()}send(){this.hasReceived("timeout")||(this.startTimeout(),this.sent=!0,this.channel.socket.push({topic:this.channel.topic,event:this.event,payload:this.payload(),ref:this.ref,join_ref:this.channel.joinRef()}))}receive(e,t){return this.hasReceived(e)&&t(this.receivedResp.response),this.recHooks.push({status:e,callback:t}),this}reset(){this.cancelRefEvent(),this.ref=null,this.refEvent=null,this.receivedResp=null,this.sent=!1}matchReceive({status:e,response:t,_ref:i}){this.recHooks.filter(s=>s.status===e).forEach(s=>s.callback(t))}cancelRefEvent(){!this.refEvent||this.channel.off(this.refEvent)}cancelTimeout(){clearTimeout(this.timeoutTimer),this.timeoutTimer=null}startTimeout(){this.timeoutTimer&&this.cancelTimeout(),this.ref=this.channel.socket.makeRef(),this.refEvent=this.channel.replyEventName(this.ref),this.channel.on(this.refEvent,e=>{this.cancelRefEvent(),this.cancelTimeout(),this.receivedResp=e,this.matchReceive(e)}),this.timeoutTimer=setTimeout(()=>{this.trigger("timeout",{})},this.timeout)}hasReceived(e){return this.receivedResp&&this.receivedResp.status===e}trigger(e,t){this.channel.trigger(this.refEvent,{status:e,response:t})}};var b=class{constructor(e,t){this.callback=e,this.timerCalc=t,this.timer=null,this.tries=0}reset(){this.tries=0,clearTimeout(this.timer)}scheduleTimeout(){clearTimeout(this.timer),this.timer=setTimeout(()=>{this.tries=this.tries+1,this.callback()},this.timerCalc(this.tries+1))}};var j=class{constructor(e,t,i){this.state=u.closed,this.topic=e,this.params=v(t||{}),this.socket=i,this.bindings=[],this.bindingRef=0,this.timeout=this.socket.timeout,this.joinedOnce=!1,this.joinPush=new T(this,p.join,this.params,this.timeout),this.pushBuffer=[],this.stateChangeRefs=[],this.rejoinTimer=new b(()=>{this.socket.isConnected()&&this.rejoin()},this.socket.rejoinAfterMs),this.stateChangeRefs.push(this.socket.onError(()=>this.rejoinTimer.reset())),this.stateChangeRefs.push(this.socket.onOpen(()=>{this.rejoinTimer.reset(),this.isErrored()&&this.rejoin()})),this.joinPush.receive("ok",()=>{this.state=u.joined,this.rejoinTimer.reset(),this.pushBuffer.forEach(s=>s.send()),this.pushBuffer=[]}),this.joinPush.receive("error",()=>{this.state=u.errored,this.socket.isConnected()&&this.rejoinTimer.scheduleTimeout()}),this.onClose(()=>{this.rejoinTimer.reset(),this.socket.hasLogger()&&this.socket.log("channel",`close ${this.topic} ${this.joinRef()}`),this.state=u.closed,this.socket.remove(this)}),this.onError(s=>{this.socket.hasLogger()&&this.socket.log("channel",`error ${this.topic}`,s),this.isJoining()&&this.joinPush.reset(),this.state=u.errored,this.socket.isConnected()&&this.rejoinTimer.scheduleTimeout()}),this.joinPush.receive("timeout",()=>{this.socket.hasLogger()&&this.socket.log("channel",`timeout ${this.topic} (${this.joinRef()})`,this.joinPush.timeout),new T(this,p.leave,v({}),this.timeout).send(),this.state=u.errored,this.joinPush.reset(),this.socket.isConnected()&&this.rejoinTimer.scheduleTimeout()}),this.on(p.reply,(s,o)=>{this.trigger(this.replyEventName(o),s)})}join(e=this.timeout){if(this.joinedOnce)throw new Error("tried to join multiple times. 'join' can only be called a single time per channel instance");return this.timeout=e,this.joinedOnce=!0,this.rejoin(),this.joinPush}onClose(e){this.on(p.close,e)}onError(e){return this.on(p.error,t=>e(t))}on(e,t){let i=this.bindingRef++;return this.bindings.push({event:e,ref:i,callback:t}),i}off(e,t){this.bindings=this.bindings.filter(i=>!(i.event===e&&(typeof t=="undefined"||t===i.ref)))}canPush(){return this.socket.isConnected()&&this.isJoined()}push(e,t,i=this.timeout){if(t=t||{},!this.joinedOnce)throw new Error(`tried to push '${e}' to '${this.topic}' before joining. Use channel.join() before pushing events`);let s=new T(this,e,function(){return t},i);return this.canPush()?s.send():(s.startTimeout(),this.pushBuffer.push(s)),s}leave(e=this.timeout){this.rejoinTimer.reset(),this.joinPush.cancelTimeout(),this.state=u.leaving;let t=()=>{this.socket.hasLogger()&&this.socket.log("channel",`leave ${this.topic}`),this.trigger(p.close,"leave")},i=new T(this,p.leave,v({}),e);return i.receive("ok",()=>t()).receive("timeout",()=>t()),i.send(),this.canPush()||i.trigger("ok",{}),i}onMessage(e,t,i){return t}isMember(e,t,i,s){return this.topic!==e?!1:s&&s!==this.joinRef()?(this.socket.hasLogger()&&this.socket.log("channel","dropping outdated message",{topic:e,event:t,payload:i,joinRef:s}),!1):!0}joinRef(){return this.joinPush.ref}rejoin(e=this.timeout){this.isLeaving()||(this.socket.leaveOpenTopic(this.topic),this.state=u.joining,this.joinPush.resend(e))}trigger(e,t,i,s){let o=this.onMessage(e,t,i,s);if(t&&!o)throw new Error("channel onMessage callbacks must return the payload, modified or unmodified");let r=this.bindings.filter(n=>n.event===e);for(let n=0;n{let a=this.parseJSON(e.responseText);n&&n(a)},r&&(e.ontimeout=r),e.onprogress=()=>{},e.send(s)}static xhrRequest(e,t,i,s,o,r,n,a){e.open(t,i,!0),e.timeout=r,e.setRequestHeader("Content-Type",s),e.onerror=()=>{a&&a(null)},e.onreadystatechange=()=>{if(e.readyState===D.complete&&a){let l=this.parseJSON(e.responseText);a(l)}},n&&(e.ontimeout=n),e.send(o)}static parseJSON(e){if(!e||e==="")return null;try{return JSON.parse(e)}catch(t){return console&&console.log("failed to parse JSON response",e),null}}static serialize(e,t){let i=[];for(var s in e){if(!Object.prototype.hasOwnProperty.call(e,s))continue;let o=t?`${t}[${s}]`:s,r=e[s];typeof r=="object"?i.push(this.serialize(r,o)):i.push(encodeURIComponent(o)+"="+encodeURIComponent(r))}return i.join("&")}static appendParams(e,t){if(Object.keys(t).length===0)return e;let i=e.match(/\?/)?"&":"?";return`${e}${i}${this.serialize(t)}`}};var E=class{constructor(e){this.endPoint=null,this.token=null,this.skipHeartbeat=!0,this.onopen=function(){},this.onerror=function(){},this.onmessage=function(){},this.onclose=function(){},this.pollEndpoint=this.normalizeEndpoint(e),this.readyState=d.connecting,this.poll()}normalizeEndpoint(e){return e.replace("ws://","http://").replace("wss://","https://").replace(new RegExp("(.*)/"+L.websocket),"$1/"+L.longpoll)}endpointURL(){return m.appendParams(this.pollEndpoint,{token:this.token})}closeAndRetry(e,t,i){this.close(e,t,i),this.readyState=d.connecting}ontimeout(){this.onerror("timeout"),this.closeAndRetry(1005,"timeout",!1)}poll(){(this.readyState===d.open||this.readyState===d.connecting)&&m.request("GET",this.endpointURL(),"application/json",null,this.timeout,this.ontimeout.bind(this),e=>{if(e){var{status:t,token:i,messages:s}=e;this.token=i}else t=0;switch(t){case 200:s.forEach(o=>{setTimeout(()=>{this.onmessage({data:o})},0)}),this.poll();break;case 204:this.poll();break;case 410:this.readyState=d.open,this.onopen({}),this.poll();break;case 403:this.onerror(403),this.close(1008,"forbidden",!1);break;case 0:case 500:this.onerror(500),this.closeAndRetry(1011,"internal server error",500);break;default:throw new Error(`unhandled poll status ${t}`)}})}send(e){m.request("POST",this.endpointURL(),"application/json",e,this.timeout,this.onerror.bind(this,"timeout"),t=>{(!t||t.status!==200)&&(this.onerror(t&&t.status),this.closeAndRetry(1011,"internal server error",!1))})}close(e,t,i){this.readyState=d.closed;let s=Object.assign({code:1e3,reason:void 0,wasClean:!0},{code:e,reason:t,wasClean:i});typeof CloseEvent!="undefined"?this.onclose(new CloseEvent("close",s)):this.onclose(s)}};var g=class{constructor(e,t={}){let i=t.events||{state:"presence_state",diff:"presence_diff"};this.state={},this.pendingDiffs=[],this.channel=e,this.joinRef=null,this.caller={onJoin:function(){},onLeave:function(){},onSync:function(){}},this.channel.on(i.state,s=>{let{onJoin:o,onLeave:r,onSync:n}=this.caller;this.joinRef=this.channel.joinRef(),this.state=g.syncState(this.state,s,o,r),this.pendingDiffs.forEach(a=>{this.state=g.syncDiff(this.state,a,o,r)}),this.pendingDiffs=[],n()}),this.channel.on(i.diff,s=>{let{onJoin:o,onLeave:r,onSync:n}=this.caller;this.inPendingSyncState()?this.pendingDiffs.push(s):(this.state=g.syncDiff(this.state,s,o,r),n())})}onJoin(e){this.caller.onJoin=e}onLeave(e){this.caller.onLeave=e}onSync(e){this.caller.onSync=e}list(e){return g.list(this.state,e)}inPendingSyncState(){return!this.joinRef||this.joinRef!==this.channel.joinRef()}static syncState(e,t,i,s){let o=this.clone(e),r={},n={};return this.map(o,(a,l)=>{t[a]||(n[a]=l)}),this.map(t,(a,l)=>{let f=o[a];if(f){let c=l.metas.map(R=>R.phx_ref),C=f.metas.map(R=>R.phx_ref),_=l.metas.filter(R=>C.indexOf(R.phx_ref)<0),x=f.metas.filter(R=>c.indexOf(R.phx_ref)<0);_.length>0&&(r[a]=l,r[a].metas=_),x.length>0&&(n[a]=this.clone(f),n[a].metas=x)}else r[a]=l}),this.syncDiff(o,{joins:r,leaves:n},i,s)}static syncDiff(e,t,i,s){let{joins:o,leaves:r}=this.clone(t);return i||(i=function(){}),s||(s=function(){}),this.map(o,(n,a)=>{let l=e[n];if(e[n]=this.clone(a),l){let f=e[n].metas.map(C=>C.phx_ref),c=l.metas.filter(C=>f.indexOf(C.phx_ref)<0);e[n].metas.unshift(...c)}i(n,l,a)}),this.map(r,(n,a)=>{let l=e[n];if(!l)return;let f=a.metas.map(c=>c.phx_ref);l.metas=l.metas.filter(c=>f.indexOf(c.phx_ref)<0),s(n,l,a),l.metas.length===0&&delete e[n]}),e}static list(e,t){return t||(t=function(i,s){return s}),this.map(e,(i,s)=>t(i,s))}static map(e,t){return Object.getOwnPropertyNames(e).map(i=>t(i,e[i]))}static clone(e){return JSON.parse(JSON.stringify(e))}};var y={HEADER_LENGTH:1,META_LENGTH:4,KINDS:{push:0,reply:1,broadcast:2},encode(h,e){if(h.payload.constructor===ArrayBuffer)return e(this.binaryEncode(h));{let t=[h.join_ref,h.ref,h.topic,h.event,h.payload];return e(JSON.stringify(t))}},decode(h,e){if(h.constructor===ArrayBuffer)return e(this.binaryDecode(h));{let[t,i,s,o,r]=JSON.parse(h);return e({join_ref:t,ref:i,topic:s,event:o,payload:r})}},binaryEncode(h){let{join_ref:e,ref:t,event:i,topic:s,payload:o}=h,r=this.META_LENGTH+e.length+t.length+s.length+i.length,n=new ArrayBuffer(this.HEADER_LENGTH+r),a=new DataView(n),l=0;a.setUint8(l++,this.KINDS.push),a.setUint8(l++,e.length),a.setUint8(l++,t.length),a.setUint8(l++,s.length),a.setUint8(l++,i.length),Array.from(e,c=>a.setUint8(l++,c.charCodeAt(0))),Array.from(t,c=>a.setUint8(l++,c.charCodeAt(0))),Array.from(s,c=>a.setUint8(l++,c.charCodeAt(0))),Array.from(i,c=>a.setUint8(l++,c.charCodeAt(0)));var f=new Uint8Array(n.byteLength+o.byteLength);return f.set(new Uint8Array(n),0),f.set(new Uint8Array(o),n.byteLength),f.buffer},binaryDecode(h){let e=new DataView(h),t=e.getUint8(0),i=new TextDecoder;switch(t){case this.KINDS.push:return this.decodePush(h,e,i);case this.KINDS.reply:return this.decodeReply(h,e,i);case this.KINDS.broadcast:return this.decodeBroadcast(h,e,i)}},decodePush(h,e,t){let i=e.getUint8(1),s=e.getUint8(2),o=e.getUint8(3),r=this.HEADER_LENGTH+this.META_LENGTH-1,n=t.decode(h.slice(r,r+i));r=r+i;let a=t.decode(h.slice(r,r+s));r=r+s;let l=t.decode(h.slice(r,r+o));r=r+o;let f=h.slice(r,h.byteLength);return{join_ref:n,ref:null,topic:a,event:l,payload:f}},decodeReply(h,e,t){let i=e.getUint8(1),s=e.getUint8(2),o=e.getUint8(3),r=e.getUint8(4),n=this.HEADER_LENGTH+this.META_LENGTH,a=t.decode(h.slice(n,n+i));n=n+i;let l=t.decode(h.slice(n,n+s));n=n+s;let f=t.decode(h.slice(n,n+o));n=n+o;let c=t.decode(h.slice(n,n+r));n=n+r;let C=h.slice(n,h.byteLength),_={status:c,response:C};return{join_ref:a,ref:l,topic:f,event:p.reply,payload:_}},decodeBroadcast(h,e,t){let i=e.getUint8(1),s=e.getUint8(2),o=this.HEADER_LENGTH+2,r=t.decode(h.slice(o,o+i));o=o+i;let n=t.decode(h.slice(o,o+s));o=o+s;let a=h.slice(o,h.byteLength);return{join_ref:null,ref:null,topic:r,event:n,payload:a}}};var k=class{constructor(e,t={}){this.stateChangeCallbacks={open:[],close:[],error:[],message:[]},this.channels=[],this.sendBuffer=[],this.ref=0,this.timeout=t.timeout||O,this.transport=t.transport||S.WebSocket||E,this.establishedConnections=0,this.defaultEncoder=y.encode.bind(y),this.defaultDecoder=y.decode.bind(y),this.closeWasClean=!1,this.binaryType=t.binaryType||"arraybuffer",this.connectClock=1,this.transport!==E?(this.encode=t.encode||this.defaultEncoder,this.decode=t.decode||this.defaultDecoder):(this.encode=this.defaultEncoder,this.decode=this.defaultDecoder);let i=null;A&&A.addEventListener&&(A.addEventListener("pagehide",s=>{this.conn&&(this.disconnect(),i=this.connectClock)}),A.addEventListener("pageshow",s=>{i===this.connectClock&&(i=null,this.connect())})),this.heartbeatIntervalMs=t.heartbeatIntervalMs||3e4,this.rejoinAfterMs=s=>t.rejoinAfterMs?t.rejoinAfterMs(s):[1e3,2e3,5e3][s-1]||1e4,this.reconnectAfterMs=s=>t.reconnectAfterMs?t.reconnectAfterMs(s):[10,50,100,150,200,250,500,1e3,2e3][s-1]||5e3,this.logger=t.logger||null,this.longpollerTimeout=t.longpollerTimeout||2e4,this.params=v(t.params||{}),this.endPoint=`${e}/${L.websocket}`,this.vsn=t.vsn||N,this.heartbeatTimer=null,this.pendingHeartbeatRef=null,this.reconnectTimer=new b(()=>{this.teardown(()=>this.connect())},this.reconnectAfterMs)}replaceTransport(e){this.connectClock++,this.closeWasClean=!0,this.reconnectTimer.reset(),this.conn&&(this.conn.close(),this.conn=null),this.transport=e}protocol(){return location.protocol.match(/^https/)?"wss":"ws"}endPointURL(){let e=m.appendParams(m.appendParams(this.endPoint,this.params()),{vsn:this.vsn});return e.charAt(0)!=="/"?e:e.charAt(1)==="/"?`${this.protocol()}:${e}`:`${this.protocol()}://${location.host}${e}`}disconnect(e,t,i){this.connectClock++,this.closeWasClean=!0,this.reconnectTimer.reset(),this.teardown(e,t,i)}connect(e){this.connectClock++,e&&(console&&console.log("passing params to connect is deprecated. Instead pass :params to the Socket constructor"),this.params=v(e)),!this.conn&&(this.closeWasClean=!1,this.conn=new this.transport(this.endPointURL()),this.conn.binaryType=this.binaryType,this.conn.timeout=this.longpollerTimeout,this.conn.onopen=()=>this.onConnOpen(),this.conn.onerror=t=>this.onConnError(t),this.conn.onmessage=t=>this.onConnMessage(t),this.conn.onclose=t=>this.onConnClose(t))}log(e,t,i){this.logger(e,t,i)}hasLogger(){return this.logger!==null}onOpen(e){let t=this.makeRef();return this.stateChangeCallbacks.open.push([t,e]),t}onClose(e){let t=this.makeRef();return this.stateChangeCallbacks.close.push([t,e]),t}onError(e){let t=this.makeRef();return this.stateChangeCallbacks.error.push([t,e]),t}onMessage(e){let t=this.makeRef();return this.stateChangeCallbacks.message.push([t,e]),t}ping(e){if(!this.isConnected())return!1;let t=this.makeRef(),i=Date.now();this.push({topic:"phoenix",event:"heartbeat",payload:{},ref:t});let s=this.onMessage(o=>{o.ref===t&&(this.off([s]),e(Date.now()-i))});return!0}onConnOpen(){this.hasLogger()&&this.log("transport",`connected to ${this.endPointURL()}`),this.closeWasClean=!1,this.establishedConnections++,this.flushSendBuffer(),this.reconnectTimer.reset(),this.resetHeartbeat(),this.stateChangeCallbacks.open.forEach(([,e])=>e())}heartbeatTimeout(){this.pendingHeartbeatRef&&(this.pendingHeartbeatRef=null,this.hasLogger()&&this.log("transport","heartbeat timeout. Attempting to re-establish connection"),this.abnormalClose("heartbeat timeout"))}resetHeartbeat(){this.conn&&this.conn.skipHeartbeat||(this.pendingHeartbeatRef=null,clearTimeout(this.heartbeatTimer),setTimeout(()=>this.sendHeartbeat(),this.heartbeatIntervalMs))}teardown(e,t,i){if(!this.conn)return e&&e();this.waitForBufferDone(()=>{this.conn&&(t?this.conn.close(t,i||""):this.conn.close()),this.waitForSocketClosed(()=>{this.conn&&(this.conn.onclose=function(){},this.conn=null),e&&e()})})}waitForBufferDone(e,t=1){if(t===5||!this.conn||!this.conn.bufferedAmount){e();return}setTimeout(()=>{this.waitForBufferDone(e,t+1)},150*t)}waitForSocketClosed(e,t=1){if(t===5||!this.conn||this.conn.readyState===d.closed){e();return}setTimeout(()=>{this.waitForSocketClosed(e,t+1)},150*t)}onConnClose(e){let t=e&&e.code;this.hasLogger()&&this.log("transport","close",e),this.triggerChanError(),clearTimeout(this.heartbeatTimer),!this.closeWasClean&&t!==1e3&&this.reconnectTimer.scheduleTimeout(),this.stateChangeCallbacks.close.forEach(([,i])=>i(e))}onConnError(e){this.hasLogger()&&this.log("transport",e);let t=this.transport,i=this.establishedConnections;this.stateChangeCallbacks.error.forEach(([,s])=>{s(e,t,i)}),(t===this.transport||i>0)&&this.triggerChanError()}triggerChanError(){this.channels.forEach(e=>{e.isErrored()||e.isLeaving()||e.isClosed()||e.trigger(p.error)})}connectionState(){switch(this.conn&&this.conn.readyState){case d.connecting:return"connecting";case d.open:return"open";case d.closing:return"closing";default:return"closed"}}isConnected(){return this.connectionState()==="open"}remove(e){this.off(e.stateChangeRefs),this.channels=this.channels.filter(t=>t.joinRef()!==e.joinRef())}off(e){for(let t in this.stateChangeCallbacks)this.stateChangeCallbacks[t]=this.stateChangeCallbacks[t].filter(([i])=>e.indexOf(i)===-1)}channel(e,t={}){let i=new j(e,t,this);return this.channels.push(i),i}push(e){if(this.hasLogger()){let{topic:t,event:i,payload:s,ref:o,join_ref:r}=e;this.log("push",`${t} ${i} (${r}, ${o})`,s)}this.isConnected()?this.encode(e,t=>this.conn.send(t)):this.sendBuffer.push(()=>this.encode(e,t=>this.conn.send(t)))}makeRef(){let e=this.ref+1;return e===this.ref?this.ref=0:this.ref=e,this.ref.toString()}sendHeartbeat(){this.pendingHeartbeatRef&&!this.isConnected()||(this.pendingHeartbeatRef=this.makeRef(),this.push({topic:"phoenix",event:"heartbeat",payload:{},ref:this.pendingHeartbeatRef}),this.heartbeatTimer=setTimeout(()=>this.heartbeatTimeout(),this.heartbeatIntervalMs))}abnormalClose(e){this.closeWasClean=!1,this.isConnected()&&this.conn.close(H,e)}flushSendBuffer(){this.isConnected()&&this.sendBuffer.length>0&&(this.sendBuffer.forEach(e=>e()),this.sendBuffer=[])}onConnMessage(e){this.decode(e.data,t=>{let{topic:i,event:s,payload:o,ref:r,join_ref:n}=t;r&&r===this.pendingHeartbeatRef&&(clearTimeout(this.heartbeatTimer),this.pendingHeartbeatRef=null,setTimeout(()=>this.sendHeartbeat(),this.heartbeatIntervalMs)),this.hasLogger()&&this.log("receive",`${o.status||""} ${i} ${s} ${r&&"("+r+")"||""}`,o);for(let a=0;ai.topic===e&&(i.isJoined()||i.isJoining()));t&&(this.hasLogger()&&this.log("transport",`leaving duplicate topic "${e}"`),t.leave())}};return J(I);})(); +var Phoenix=(()=>{var _=Object.defineProperty;var M=Object.getOwnPropertyDescriptor;var U=Object.getOwnPropertyNames;var P=Object.prototype.hasOwnProperty;var $=(h,e)=>{for(var t in e)_(h,t,{get:e[t],enumerable:!0})},B=(h,e,t,i)=>{if(e&&typeof e=="object"||typeof e=="function")for(let s of U(e))!P.call(h,s)&&s!==t&&_(h,s,{get:()=>e[s],enumerable:!(i=M(e,s))||i.enumerable});return h};var J=h=>B(_({},"__esModule",{value:!0}),h);var I={};$(I,{Channel:()=>b,LongPoll:()=>E,Presence:()=>g,Serializer:()=>y,Socket:()=>k});var v=h=>typeof h=="function"?h:function(){return h};var z=typeof self!="undefined"?self:null,A=typeof window!="undefined"?window:null,S=z||A||S,N="2.0.0",d={connecting:0,open:1,closing:2,closed:3},O=1e4,H=1e3,u={closed:"closed",errored:"errored",joined:"joined",joining:"joining",leaving:"leaving"},p={close:"phx_close",error:"phx_error",join:"phx_join",reply:"phx_reply",leave:"phx_leave"},L={longpoll:"longpoll",websocket:"websocket"},D={complete:4};var T=class{constructor(e,t,i,s){this.channel=e,this.event=t,this.payload=i||function(){return{}},this.receivedResp=null,this.timeout=s,this.timeoutTimer=null,this.recHooks=[],this.sent=!1}resend(e){this.timeout=e,this.reset(),this.send()}send(){this.hasReceived("timeout")||(this.startTimeout(),this.sent=!0,this.channel.socket.push({topic:this.channel.topic,event:this.event,payload:this.payload(),ref:this.ref,join_ref:this.channel.joinRef()}))}receive(e,t){return this.hasReceived(e)&&t(this.receivedResp.response),this.recHooks.push({status:e,callback:t}),this}reset(){this.cancelRefEvent(),this.ref=null,this.refEvent=null,this.receivedResp=null,this.sent=!1}matchReceive({status:e,response:t,_ref:i}){this.recHooks.filter(s=>s.status===e).forEach(s=>s.callback(t))}cancelRefEvent(){!this.refEvent||this.channel.off(this.refEvent)}cancelTimeout(){clearTimeout(this.timeoutTimer),this.timeoutTimer=null}startTimeout(){this.timeoutTimer&&this.cancelTimeout(),this.ref=this.channel.socket.makeRef(),this.refEvent=this.channel.replyEventName(this.ref),this.channel.on(this.refEvent,e=>{this.cancelRefEvent(),this.cancelTimeout(),this.receivedResp=e,this.matchReceive(e)}),this.timeoutTimer=setTimeout(()=>{this.trigger("timeout",{})},this.timeout)}hasReceived(e){return this.receivedResp&&this.receivedResp.status===e}trigger(e,t){this.channel.trigger(this.refEvent,{status:e,response:t})}};var j=class{constructor(e,t){this.callback=e,this.timerCalc=t,this.timer=null,this.tries=0}reset(){this.tries=0,clearTimeout(this.timer)}scheduleTimeout(){clearTimeout(this.timer),this.timer=setTimeout(()=>{this.tries=this.tries+1,this.callback()},this.timerCalc(this.tries+1))}};var b=class{constructor(e,t,i){this.state=u.closed,this.topic=e,this.params=v(t||{}),this.socket=i,this.bindings=[],this.bindingRef=0,this.timeout=this.socket.timeout,this.joinedOnce=!1,this.joinPush=new T(this,p.join,this.params,this.timeout),this.pushBuffer=[],this.stateChangeRefs=[],this.rejoinTimer=new j(()=>{this.socket.isConnected()&&this.rejoin()},this.socket.rejoinAfterMs),this.stateChangeRefs.push(this.socket.onError(()=>this.rejoinTimer.reset())),this.stateChangeRefs.push(this.socket.onOpen(()=>{this.rejoinTimer.reset(),this.isErrored()&&this.rejoin()})),this.joinPush.receive("ok",()=>{this.state=u.joined,this.rejoinTimer.reset(),this.pushBuffer.forEach(s=>s.send()),this.pushBuffer=[]}),this.joinPush.receive("error",()=>{this.state=u.errored,this.socket.isConnected()&&this.rejoinTimer.scheduleTimeout()}),this.onClose(()=>{this.rejoinTimer.reset(),this.socket.hasLogger()&&this.socket.log("channel",`close ${this.topic} ${this.joinRef()}`),this.state=u.closed,this.socket.remove(this)}),this.onError(s=>{this.socket.hasLogger()&&this.socket.log("channel",`error ${this.topic}`,s),this.isJoining()&&this.joinPush.reset(),this.state=u.errored,this.socket.isConnected()&&this.rejoinTimer.scheduleTimeout()}),this.joinPush.receive("timeout",()=>{this.socket.hasLogger()&&this.socket.log("channel",`timeout ${this.topic} (${this.joinRef()})`,this.joinPush.timeout),new T(this,p.leave,v({}),this.timeout).send(),this.state=u.errored,this.joinPush.reset(),this.socket.isConnected()&&this.rejoinTimer.scheduleTimeout()}),this.on(p.reply,(s,o)=>{this.trigger(this.replyEventName(o),s)})}join(e=this.timeout){if(this.joinedOnce)throw new Error("tried to join multiple times. 'join' can only be called a single time per channel instance");return this.timeout=e,this.joinedOnce=!0,this.rejoin(),this.joinPush}onClose(e){this.on(p.close,e)}onError(e){return this.on(p.error,t=>e(t))}on(e,t){let i=this.bindingRef++;return this.bindings.push({event:e,ref:i,callback:t}),i}off(e,t){this.bindings=this.bindings.filter(i=>!(i.event===e&&(typeof t=="undefined"||t===i.ref)))}canPush(){return this.socket.isConnected()&&this.isJoined()}push(e,t,i=this.timeout){if(t=t||{},!this.joinedOnce)throw new Error(`tried to push '${e}' to '${this.topic}' before joining. Use channel.join() before pushing events`);let s=new T(this,e,function(){return t},i);return this.canPush()?s.send():(s.startTimeout(),this.pushBuffer.push(s)),s}leave(e=this.timeout){this.rejoinTimer.reset(),this.joinPush.cancelTimeout(),this.state=u.leaving;let t=()=>{this.socket.hasLogger()&&this.socket.log("channel",`leave ${this.topic}`),this.trigger(p.close,"leave")},i=new T(this,p.leave,v({}),e);return i.receive("ok",()=>t()).receive("timeout",()=>t()),i.send(),this.canPush()||i.trigger("ok",{}),i}onMessage(e,t,i){return t}isMember(e,t,i,s){return this.topic!==e?!1:s&&s!==this.joinRef()?(this.socket.hasLogger()&&this.socket.log("channel","dropping outdated message",{topic:e,event:t,payload:i,joinRef:s}),!1):!0}joinRef(){return this.joinPush.ref}rejoin(e=this.timeout){this.isLeaving()||(this.socket.leaveOpenTopic(this.topic),this.state=u.joining,this.joinPush.resend(e))}trigger(e,t,i,s){let o=this.onMessage(e,t,i,s);if(t&&!o)throw new Error("channel onMessage callbacks must return the payload, modified or unmodified");let r=this.bindings.filter(n=>n.event===e);for(let n=0;n{let a=this.parseJSON(e.responseText);n&&n(a)},r&&(e.ontimeout=r),e.onprogress=()=>{},e.send(s)}static xhrRequest(e,t,i,s,o,r,n,a){e.open(t,i,!0),e.timeout=r,e.setRequestHeader("Content-Type",s),e.onerror=()=>{a&&a(null)},e.onreadystatechange=()=>{if(e.readyState===D.complete&&a){let l=this.parseJSON(e.responseText);a(l)}},n&&(e.ontimeout=n),e.send(o)}static parseJSON(e){if(!e||e==="")return null;try{return JSON.parse(e)}catch(t){return console&&console.log("failed to parse JSON response",e),null}}static serialize(e,t){let i=[];for(var s in e){if(!Object.prototype.hasOwnProperty.call(e,s))continue;let o=t?`${t}[${s}]`:s,r=e[s];typeof r=="object"?i.push(this.serialize(r,o)):i.push(encodeURIComponent(o)+"="+encodeURIComponent(r))}return i.join("&")}static appendParams(e,t){if(Object.keys(t).length===0)return e;let i=e.match(/\?/)?"&":"?";return`${e}${i}${this.serialize(t)}`}};var E=class{constructor(e){this.endPoint=null,this.token=null,this.skipHeartbeat=!0,this.onopen=function(){},this.onerror=function(){},this.onmessage=function(){},this.onclose=function(){},this.pollEndpoint=this.normalizeEndpoint(e),this.readyState=d.connecting,this.poll()}normalizeEndpoint(e){return e.replace("ws://","http://").replace("wss://","https://").replace(new RegExp("(.*)/"+L.websocket),"$1/"+L.longpoll)}endpointURL(){return m.appendParams(this.pollEndpoint,{token:this.token})}closeAndRetry(e,t,i){this.close(e,t,i),this.readyState=d.connecting}ontimeout(){this.onerror("timeout"),this.closeAndRetry(1005,"timeout",!1)}poll(){(this.readyState===d.open||this.readyState===d.connecting)&&m.request("GET",this.endpointURL(),"application/json",null,this.timeout,this.ontimeout.bind(this),e=>{if(e){var{status:t,token:i,messages:s}=e;this.token=i}else t=0;switch(t){case 200:s.forEach(o=>{setTimeout(()=>{this.onmessage({data:o})},0)}),this.poll();break;case 204:this.poll();break;case 410:this.readyState=d.open,this.onopen({}),this.poll();break;case 403:this.onerror(403),this.close(1008,"forbidden",!1);break;case 0:case 500:this.onerror(500),this.closeAndRetry(1011,"internal server error",500);break;default:throw new Error(`unhandled poll status ${t}`)}})}send(e){m.request("POST",this.endpointURL(),"application/json",e,this.timeout,this.onerror.bind(this,"timeout"),t=>{(!t||t.status!==200)&&(this.onerror(t&&t.status),this.closeAndRetry(1011,"internal server error",!1))})}close(e,t,i){this.readyState=d.closed;let s=Object.assign({code:1e3,reason:void 0,wasClean:!0},{code:e,reason:t,wasClean:i});typeof CloseEvent!="undefined"?this.onclose(new CloseEvent("close",s)):this.onclose(s)}};var g=class{constructor(e,t={}){let i=t.events||{state:"presence_state",diff:"presence_diff"};this.state={},this.pendingDiffs=[],this.channel=e,this.joinRef=null,this.caller={onJoin:function(){},onLeave:function(){},onSync:function(){}},this.channel.on(i.state,s=>{let{onJoin:o,onLeave:r,onSync:n}=this.caller;this.joinRef=this.channel.joinRef(),this.state=g.syncState(this.state,s,o,r),this.pendingDiffs.forEach(a=>{this.state=g.syncDiff(this.state,a,o,r)}),this.pendingDiffs=[],n()}),this.channel.on(i.diff,s=>{let{onJoin:o,onLeave:r,onSync:n}=this.caller;this.inPendingSyncState()?this.pendingDiffs.push(s):(this.state=g.syncDiff(this.state,s,o,r),n())})}onJoin(e){this.caller.onJoin=e}onLeave(e){this.caller.onLeave=e}onSync(e){this.caller.onSync=e}list(e){return g.list(this.state,e)}inPendingSyncState(){return!this.joinRef||this.joinRef!==this.channel.joinRef()}static syncState(e,t,i,s){let o=this.clone(e),r={},n={};return this.map(o,(a,l)=>{t[a]||(n[a]=l)}),this.map(t,(a,l)=>{let f=o[a];if(f){let c=l.metas.map(R=>R.phx_ref),C=f.metas.map(R=>R.phx_ref),x=l.metas.filter(R=>C.indexOf(R.phx_ref)<0),w=f.metas.filter(R=>c.indexOf(R.phx_ref)<0);x.length>0&&(r[a]=l,r[a].metas=x),w.length>0&&(n[a]=this.clone(f),n[a].metas=w)}else r[a]=l}),this.syncDiff(o,{joins:r,leaves:n},i,s)}static syncDiff(e,t,i,s){let{joins:o,leaves:r}=this.clone(t);return i||(i=function(){}),s||(s=function(){}),this.map(o,(n,a)=>{let l=e[n];if(e[n]=this.clone(a),l){let f=e[n].metas.map(C=>C.phx_ref),c=l.metas.filter(C=>f.indexOf(C.phx_ref)<0);e[n].metas.unshift(...c)}i(n,l,a)}),this.map(r,(n,a)=>{let l=e[n];if(!l)return;let f=a.metas.map(c=>c.phx_ref);l.metas=l.metas.filter(c=>f.indexOf(c.phx_ref)<0),s(n,l,a),l.metas.length===0&&delete e[n]}),e}static list(e,t){return t||(t=function(i,s){return s}),this.map(e,(i,s)=>t(i,s))}static map(e,t){return Object.getOwnPropertyNames(e).map(i=>t(i,e[i]))}static clone(e){return JSON.parse(JSON.stringify(e))}};var y={HEADER_LENGTH:1,META_LENGTH:4,KINDS:{push:0,reply:1,broadcast:2},encode(h,e){if(h.payload.constructor===ArrayBuffer)return e(this.binaryEncode(h));{let t=[h.join_ref,h.ref,h.topic,h.event,h.payload];return e(JSON.stringify(t))}},decode(h,e){if(h.constructor===ArrayBuffer)return e(this.binaryDecode(h));{let[t,i,s,o,r]=JSON.parse(h);return e({join_ref:t,ref:i,topic:s,event:o,payload:r})}},binaryEncode(h){let{join_ref:e,ref:t,event:i,topic:s,payload:o}=h,r=this.META_LENGTH+e.length+t.length+s.length+i.length,n=new ArrayBuffer(this.HEADER_LENGTH+r),a=new DataView(n),l=0;a.setUint8(l++,this.KINDS.push),a.setUint8(l++,e.length),a.setUint8(l++,t.length),a.setUint8(l++,s.length),a.setUint8(l++,i.length),Array.from(e,c=>a.setUint8(l++,c.charCodeAt(0))),Array.from(t,c=>a.setUint8(l++,c.charCodeAt(0))),Array.from(s,c=>a.setUint8(l++,c.charCodeAt(0))),Array.from(i,c=>a.setUint8(l++,c.charCodeAt(0)));var f=new Uint8Array(n.byteLength+o.byteLength);return f.set(new Uint8Array(n),0),f.set(new Uint8Array(o),n.byteLength),f.buffer},binaryDecode(h){let e=new DataView(h),t=e.getUint8(0),i=new TextDecoder;switch(t){case this.KINDS.push:return this.decodePush(h,e,i);case this.KINDS.reply:return this.decodeReply(h,e,i);case this.KINDS.broadcast:return this.decodeBroadcast(h,e,i)}},decodePush(h,e,t){let i=e.getUint8(1),s=e.getUint8(2),o=e.getUint8(3),r=this.HEADER_LENGTH+this.META_LENGTH-1,n=t.decode(h.slice(r,r+i));r=r+i;let a=t.decode(h.slice(r,r+s));r=r+s;let l=t.decode(h.slice(r,r+o));r=r+o;let f=h.slice(r,h.byteLength);return{join_ref:n,ref:null,topic:a,event:l,payload:f}},decodeReply(h,e,t){let i=e.getUint8(1),s=e.getUint8(2),o=e.getUint8(3),r=e.getUint8(4),n=this.HEADER_LENGTH+this.META_LENGTH,a=t.decode(h.slice(n,n+i));n=n+i;let l=t.decode(h.slice(n,n+s));n=n+s;let f=t.decode(h.slice(n,n+o));n=n+o;let c=t.decode(h.slice(n,n+r));n=n+r;let C=h.slice(n,h.byteLength),x={status:c,response:C};return{join_ref:a,ref:l,topic:f,event:p.reply,payload:x}},decodeBroadcast(h,e,t){let i=e.getUint8(1),s=e.getUint8(2),o=this.HEADER_LENGTH+2,r=t.decode(h.slice(o,o+i));o=o+i;let n=t.decode(h.slice(o,o+s));o=o+s;let a=h.slice(o,h.byteLength);return{join_ref:null,ref:null,topic:r,event:n,payload:a}}};var k=class{constructor(e,t={}){this.stateChangeCallbacks={open:[],close:[],error:[],message:[]},this.channels=[],this.sendBuffer=[],this.ref=0,this.timeout=t.timeout||O,this.transport=t.transport||S.WebSocket||E,this.establishedConnections=0,this.defaultEncoder=y.encode.bind(y),this.defaultDecoder=y.decode.bind(y),this.closeWasClean=!1,this.binaryType=t.binaryType||"arraybuffer",this.connectClock=1,this.transport!==E?(this.encode=t.encode||this.defaultEncoder,this.decode=t.decode||this.defaultDecoder):(this.encode=this.defaultEncoder,this.decode=this.defaultDecoder);let i=null;A&&A.addEventListener&&(A.addEventListener("pagehide",s=>{this.conn&&(this.disconnect(),i=this.connectClock)}),A.addEventListener("pageshow",s=>{i===this.connectClock&&(i=null,this.connect())})),this.heartbeatIntervalMs=t.heartbeatIntervalMs||3e4,this.rejoinAfterMs=s=>t.rejoinAfterMs?t.rejoinAfterMs(s):[1e3,2e3,5e3][s-1]||1e4,this.reconnectAfterMs=s=>t.reconnectAfterMs?t.reconnectAfterMs(s):[10,50,100,150,200,250,500,1e3,2e3][s-1]||5e3,this.logger=t.logger||null,this.longpollerTimeout=t.longpollerTimeout||2e4,this.params=v(t.params||{}),this.endPoint=`${e}/${L.websocket}`,this.vsn=t.vsn||N,this.heartbeatTimer=null,this.pendingHeartbeatRef=null,this.reconnectTimer=new j(()=>{this.teardown(()=>this.connect())},this.reconnectAfterMs)}replaceTransport(e){this.connectClock++,this.closeWasClean=!0,this.reconnectTimer.reset(),this.conn&&(this.conn.close(),this.conn=null),this.transport=e}protocol(){return location.protocol.match(/^https/)?"wss":"ws"}endPointURL(){let e=m.appendParams(m.appendParams(this.endPoint,this.params()),{vsn:this.vsn});return e.charAt(0)!=="/"?e:e.charAt(1)==="/"?`${this.protocol()}:${e}`:`${this.protocol()}://${location.host}${e}`}disconnect(e,t,i){this.connectClock++,this.closeWasClean=!0,this.reconnectTimer.reset(),this.teardown(e,t,i)}connect(e){this.connectClock++,e&&(console&&console.log("passing params to connect is deprecated. Instead pass :params to the Socket constructor"),this.params=v(e)),!this.conn&&(this.closeWasClean=!1,this.conn=new this.transport(this.endPointURL()),this.conn.binaryType=this.binaryType,this.conn.timeout=this.longpollerTimeout,this.conn.onopen=()=>this.onConnOpen(),this.conn.onerror=t=>this.onConnError(t),this.conn.onmessage=t=>this.onConnMessage(t),this.conn.onclose=t=>this.onConnClose(t))}log(e,t,i){this.logger(e,t,i)}hasLogger(){return this.logger!==null}onOpen(e){let t=this.makeRef();return this.stateChangeCallbacks.open.push([t,e]),t}onClose(e){let t=this.makeRef();return this.stateChangeCallbacks.close.push([t,e]),t}onError(e){let t=this.makeRef();return this.stateChangeCallbacks.error.push([t,e]),t}onMessage(e){let t=this.makeRef();return this.stateChangeCallbacks.message.push([t,e]),t}ping(e){if(!this.isConnected())return!1;let t=this.makeRef(),i=Date.now();this.push({topic:"phoenix",event:"heartbeat",payload:{},ref:t});let s=this.onMessage(o=>{o.ref===t&&(this.off([s]),e(Date.now()-i))});return!0}onConnOpen(){this.hasLogger()&&this.log("transport",`connected to ${this.endPointURL()}`),this.closeWasClean=!1,this.establishedConnections++,this.flushSendBuffer(),this.reconnectTimer.reset(),this.resetHeartbeat(),this.stateChangeCallbacks.open.forEach(([,e])=>e())}heartbeatTimeout(){this.pendingHeartbeatRef&&(this.pendingHeartbeatRef=null,this.hasLogger()&&this.log("transport","heartbeat timeout. Attempting to re-establish connection"),this.abnormalClose("heartbeat timeout"))}resetHeartbeat(){this.conn&&this.conn.skipHeartbeat||(this.pendingHeartbeatRef=null,clearTimeout(this.heartbeatTimer),setTimeout(()=>this.sendHeartbeat(),this.heartbeatIntervalMs))}teardown(e,t,i){if(!this.conn)return e&&e();this.waitForBufferDone(()=>{this.conn&&(t?this.conn.close(t,i||""):this.conn.close()),this.waitForSocketClosed(()=>{this.conn&&(this.conn.onclose=function(){},this.conn=null),e&&e()})})}waitForBufferDone(e,t=1){if(t===5||!this.conn||!this.conn.bufferedAmount){e();return}setTimeout(()=>{this.waitForBufferDone(e,t+1)},150*t)}waitForSocketClosed(e,t=1){if(t===5||!this.conn||this.conn.readyState===d.closed){e();return}setTimeout(()=>{this.waitForSocketClosed(e,t+1)},150*t)}onConnClose(e){let t=e&&e.code;this.hasLogger()&&this.log("transport","close",e),this.triggerChanError(),clearTimeout(this.heartbeatTimer),!this.closeWasClean&&t!==1e3&&this.reconnectTimer.scheduleTimeout(),this.stateChangeCallbacks.close.forEach(([,i])=>i(e))}onConnError(e){this.hasLogger()&&this.log("transport",e);let t=this.transport,i=this.establishedConnections;this.stateChangeCallbacks.error.forEach(([,s])=>{s(e,t,i)}),(t===this.transport||i>0)&&this.triggerChanError()}triggerChanError(){this.channels.forEach(e=>{e.isErrored()||e.isLeaving()||e.isClosed()||e.trigger(p.error)})}connectionState(){switch(this.conn&&this.conn.readyState){case d.connecting:return"connecting";case d.open:return"open";case d.closing:return"closing";default:return"closed"}}isConnected(){return this.connectionState()==="open"}remove(e){this.off(e.stateChangeRefs),this.channels=this.channels.filter(t=>t.joinRef()!==e.joinRef())}off(e){for(let t in this.stateChangeCallbacks)this.stateChangeCallbacks[t]=this.stateChangeCallbacks[t].filter(([i])=>e.indexOf(i)===-1)}channel(e,t={}){let i=new b(e,t,this);return this.channels.push(i),i}push(e){if(this.hasLogger()){let{topic:t,event:i,payload:s,ref:o,join_ref:r}=e;this.log("push",`${t} ${i} (${r}, ${o})`,s)}this.isConnected()?this.encode(e,t=>this.conn.send(t)):this.sendBuffer.push(()=>this.encode(e,t=>this.conn.send(t)))}makeRef(){let e=this.ref+1;return e===this.ref?this.ref=0:this.ref=e,this.ref.toString()}sendHeartbeat(){this.pendingHeartbeatRef&&!this.isConnected()||(this.pendingHeartbeatRef=this.makeRef(),this.push({topic:"phoenix",event:"heartbeat",payload:{},ref:this.pendingHeartbeatRef}),this.heartbeatTimer=setTimeout(()=>this.heartbeatTimeout(),this.heartbeatIntervalMs))}abnormalClose(e){this.closeWasClean=!1,this.isConnected()&&this.conn.close(H,e)}flushSendBuffer(){this.isConnected()&&this.sendBuffer.length>0&&(this.sendBuffer.forEach(e=>e()),this.sendBuffer=[])}onConnMessage(e){this.decode(e.data,t=>{let{topic:i,event:s,payload:o,ref:r,join_ref:n}=t;r&&r===this.pendingHeartbeatRef&&(clearTimeout(this.heartbeatTimer),this.pendingHeartbeatRef=null,setTimeout(()=>this.sendHeartbeat(),this.heartbeatIntervalMs)),this.hasLogger()&&this.log("receive",`${o.status||""} ${i} ${s} ${r&&"("+r+")"||""}`,o),i==="phoenix"&&this.onPhoenixMessage(s,o,r,n);for(let a=0;ai.topic===e&&(i.isJoined()||i.isJoining()));t&&(this.hasLogger()&&this.log("transport",`leaving duplicate topic "${e}"`),t.leave())}};return J(I);})(); diff --git a/priv/static/phoenix.mjs b/priv/static/phoenix.mjs index cabcd9703b..c72feb4052 100644 --- a/priv/static/phoenix.mjs +++ b/priv/static/phoenix.mjs @@ -1070,6 +1070,9 @@ var Socket = class { } if (this.hasLogger()) this.log("receive", `${payload.status || ""} ${topic} ${event} ${ref && "(" + ref + ")" || ""}`, payload); + if (topic === "phoenix") { + this.onPhoenixMessage(event, payload, ref, join_ref); + } for (let i = 0; i < this.channels.length; i++) { const channel = this.channels[i]; if (!channel.isMember(topic, event, payload, join_ref)) { @@ -1083,6 +1086,11 @@ var Socket = class { } }); } + onPhoenixMessage(event, payload, ref, join_ref) { + if (event === "phx_error") { + this.onConnError(payload); + } + } leaveOpenTopic(topic) { let dupChannel = this.channels.find((c) => c.topic === topic && (c.isJoined() || c.isJoining())); if (dupChannel) { diff --git a/priv/static/phoenix.mjs.map b/priv/static/phoenix.mjs.map index 500509b165..739697ce69 100644 --- a/priv/static/phoenix.mjs.map +++ b/priv/static/phoenix.mjs.map @@ -1,7 +1,7 @@ { "version": 3, "sources": ["../../assets/js/phoenix/utils.js", "../../assets/js/phoenix/constants.js", "../../assets/js/phoenix/push.js", "../../assets/js/phoenix/timer.js", "../../assets/js/phoenix/channel.js", "../../assets/js/phoenix/ajax.js", "../../assets/js/phoenix/longpoll.js", "../../assets/js/phoenix/presence.js", "../../assets/js/phoenix/serializer.js", "../../assets/js/phoenix/socket.js"], - "sourcesContent": ["// wraps value in closure or returns closure\nexport let closure = (value) => {\n if(typeof value === \"function\"){\n return value\n } else {\n let closure = function (){ return value }\n return closure\n }\n}\n", "export const globalSelf = typeof self !== \"undefined\" ? self : null\nexport const phxWindow = typeof window !== \"undefined\" ? window : null\nexport const global = globalSelf || phxWindow || global\nexport const DEFAULT_VSN = \"2.0.0\"\nexport const SOCKET_STATES = {connecting: 0, open: 1, closing: 2, closed: 3}\nexport const DEFAULT_TIMEOUT = 10000\nexport const WS_CLOSE_NORMAL = 1000\nexport const CHANNEL_STATES = {\n closed: \"closed\",\n errored: \"errored\",\n joined: \"joined\",\n joining: \"joining\",\n leaving: \"leaving\",\n}\nexport const CHANNEL_EVENTS = {\n close: \"phx_close\",\n error: \"phx_error\",\n join: \"phx_join\",\n reply: \"phx_reply\",\n leave: \"phx_leave\"\n}\n\nexport const TRANSPORTS = {\n longpoll: \"longpoll\",\n websocket: \"websocket\"\n}\nexport const XHR_STATES = {\n complete: 4\n}\n", "/**\n * Initializes the Push\n * @param {Channel} channel - The Channel\n * @param {string} event - The event, for example `\"phx_join\"`\n * @param {Object} payload - The payload, for example `{user_id: 123}`\n * @param {number} timeout - The push timeout in milliseconds\n */\nexport default class Push {\n constructor(channel, event, payload, timeout){\n this.channel = channel\n this.event = event\n this.payload = payload || function (){ return {} }\n this.receivedResp = null\n this.timeout = timeout\n this.timeoutTimer = null\n this.recHooks = []\n this.sent = false\n }\n\n /**\n *\n * @param {number} timeout\n */\n resend(timeout){\n this.timeout = timeout\n this.reset()\n this.send()\n }\n\n /**\n *\n */\n send(){\n if(this.hasReceived(\"timeout\")){ return }\n this.startTimeout()\n this.sent = true\n this.channel.socket.push({\n topic: this.channel.topic,\n event: this.event,\n payload: this.payload(),\n ref: this.ref,\n join_ref: this.channel.joinRef()\n })\n }\n\n /**\n *\n * @param {*} status\n * @param {*} callback\n */\n receive(status, callback){\n if(this.hasReceived(status)){\n callback(this.receivedResp.response)\n }\n\n this.recHooks.push({status, callback})\n return this\n }\n\n /**\n * @private\n */\n reset(){\n this.cancelRefEvent()\n this.ref = null\n this.refEvent = null\n this.receivedResp = null\n this.sent = false\n }\n\n /**\n * @private\n */\n matchReceive({status, response, _ref}){\n this.recHooks.filter(h => h.status === status)\n .forEach(h => h.callback(response))\n }\n\n /**\n * @private\n */\n cancelRefEvent(){\n if(!this.refEvent){ return }\n this.channel.off(this.refEvent)\n }\n\n /**\n * @private\n */\n cancelTimeout(){\n clearTimeout(this.timeoutTimer)\n this.timeoutTimer = null\n }\n\n /**\n * @private\n */\n startTimeout(){\n if(this.timeoutTimer){ this.cancelTimeout() }\n this.ref = this.channel.socket.makeRef()\n this.refEvent = this.channel.replyEventName(this.ref)\n\n this.channel.on(this.refEvent, payload => {\n this.cancelRefEvent()\n this.cancelTimeout()\n this.receivedResp = payload\n this.matchReceive(payload)\n })\n\n this.timeoutTimer = setTimeout(() => {\n this.trigger(\"timeout\", {})\n }, this.timeout)\n }\n\n /**\n * @private\n */\n hasReceived(status){\n return this.receivedResp && this.receivedResp.status === status\n }\n\n /**\n * @private\n */\n trigger(status, response){\n this.channel.trigger(this.refEvent, {status, response})\n }\n}\n", "/**\n *\n * Creates a timer that accepts a `timerCalc` function to perform\n * calculated timeout retries, such as exponential backoff.\n *\n * @example\n * let reconnectTimer = new Timer(() => this.connect(), function(tries){\n * return [1000, 5000, 10000][tries - 1] || 10000\n * })\n * reconnectTimer.scheduleTimeout() // fires after 1000\n * reconnectTimer.scheduleTimeout() // fires after 5000\n * reconnectTimer.reset()\n * reconnectTimer.scheduleTimeout() // fires after 1000\n *\n * @param {Function} callback\n * @param {Function} timerCalc\n */\nexport default class Timer {\n constructor(callback, timerCalc){\n this.callback = callback\n this.timerCalc = timerCalc\n this.timer = null\n this.tries = 0\n }\n\n reset(){\n this.tries = 0\n clearTimeout(this.timer)\n }\n\n /**\n * Cancels any previous scheduleTimeout and schedules callback\n */\n scheduleTimeout(){\n clearTimeout(this.timer)\n\n this.timer = setTimeout(() => {\n this.tries = this.tries + 1\n this.callback()\n }, this.timerCalc(this.tries + 1))\n }\n}\n", "import {closure} from \"./utils\"\nimport {\n CHANNEL_EVENTS,\n CHANNEL_STATES,\n} from \"./constants\"\n\nimport Push from \"./push\"\nimport Timer from \"./timer\"\n\n/**\n *\n * @param {string} topic\n * @param {(Object|function)} params\n * @param {Socket} socket\n */\nexport default class Channel {\n constructor(topic, params, socket){\n this.state = CHANNEL_STATES.closed\n this.topic = topic\n this.params = closure(params || {})\n this.socket = socket\n this.bindings = []\n this.bindingRef = 0\n this.timeout = this.socket.timeout\n this.joinedOnce = false\n this.joinPush = new Push(this, CHANNEL_EVENTS.join, this.params, this.timeout)\n this.pushBuffer = []\n this.stateChangeRefs = []\n\n this.rejoinTimer = new Timer(() => {\n if(this.socket.isConnected()){ this.rejoin() }\n }, this.socket.rejoinAfterMs)\n this.stateChangeRefs.push(this.socket.onError(() => this.rejoinTimer.reset()))\n this.stateChangeRefs.push(this.socket.onOpen(() => {\n this.rejoinTimer.reset()\n if(this.isErrored()){ this.rejoin() }\n })\n )\n this.joinPush.receive(\"ok\", () => {\n this.state = CHANNEL_STATES.joined\n this.rejoinTimer.reset()\n this.pushBuffer.forEach(pushEvent => pushEvent.send())\n this.pushBuffer = []\n })\n this.joinPush.receive(\"error\", () => {\n this.state = CHANNEL_STATES.errored\n if(this.socket.isConnected()){ this.rejoinTimer.scheduleTimeout() }\n })\n this.onClose(() => {\n this.rejoinTimer.reset()\n if(this.socket.hasLogger()) this.socket.log(\"channel\", `close ${this.topic} ${this.joinRef()}`)\n this.state = CHANNEL_STATES.closed\n this.socket.remove(this)\n })\n this.onError(reason => {\n if(this.socket.hasLogger()) this.socket.log(\"channel\", `error ${this.topic}`, reason)\n if(this.isJoining()){ this.joinPush.reset() }\n this.state = CHANNEL_STATES.errored\n if(this.socket.isConnected()){ this.rejoinTimer.scheduleTimeout() }\n })\n this.joinPush.receive(\"timeout\", () => {\n if(this.socket.hasLogger()) this.socket.log(\"channel\", `timeout ${this.topic} (${this.joinRef()})`, this.joinPush.timeout)\n let leavePush = new Push(this, CHANNEL_EVENTS.leave, closure({}), this.timeout)\n leavePush.send()\n this.state = CHANNEL_STATES.errored\n this.joinPush.reset()\n if(this.socket.isConnected()){ this.rejoinTimer.scheduleTimeout() }\n })\n this.on(CHANNEL_EVENTS.reply, (payload, ref) => {\n this.trigger(this.replyEventName(ref), payload)\n })\n }\n\n /**\n * Join the channel\n * @param {integer} timeout\n * @returns {Push}\n */\n join(timeout = this.timeout){\n if(this.joinedOnce){\n throw new Error(\"tried to join multiple times. 'join' can only be called a single time per channel instance\")\n } else {\n this.timeout = timeout\n this.joinedOnce = true\n this.rejoin()\n return this.joinPush\n }\n }\n\n /**\n * Hook into channel close\n * @param {Function} callback\n */\n onClose(callback){\n this.on(CHANNEL_EVENTS.close, callback)\n }\n\n /**\n * Hook into channel errors\n * @param {Function} callback\n */\n onError(callback){\n return this.on(CHANNEL_EVENTS.error, reason => callback(reason))\n }\n\n /**\n * Subscribes on channel events\n *\n * Subscription returns a ref counter, which can be used later to\n * unsubscribe the exact event listener\n *\n * @example\n * const ref1 = channel.on(\"event\", do_stuff)\n * const ref2 = channel.on(\"event\", do_other_stuff)\n * channel.off(\"event\", ref1)\n * // Since unsubscription, do_stuff won't fire,\n * // while do_other_stuff will keep firing on the \"event\"\n *\n * @param {string} event\n * @param {Function} callback\n * @returns {integer} ref\n */\n on(event, callback){\n let ref = this.bindingRef++\n this.bindings.push({event, ref, callback})\n return ref\n }\n\n /**\n * Unsubscribes off of channel events\n *\n * Use the ref returned from a channel.on() to unsubscribe one\n * handler, or pass nothing for the ref to unsubscribe all\n * handlers for the given event.\n *\n * @example\n * // Unsubscribe the do_stuff handler\n * const ref1 = channel.on(\"event\", do_stuff)\n * channel.off(\"event\", ref1)\n *\n * // Unsubscribe all handlers from event\n * channel.off(\"event\")\n *\n * @param {string} event\n * @param {integer} ref\n */\n off(event, ref){\n this.bindings = this.bindings.filter((bind) => {\n return !(bind.event === event && (typeof ref === \"undefined\" || ref === bind.ref))\n })\n }\n\n /**\n * @private\n */\n canPush(){ return this.socket.isConnected() && this.isJoined() }\n\n /**\n * Sends a message `event` to phoenix with the payload `payload`.\n * Phoenix receives this in the `handle_in(event, payload, socket)`\n * function. if phoenix replies or it times out (default 10000ms),\n * then optionally the reply can be received.\n *\n * @example\n * channel.push(\"event\")\n * .receive(\"ok\", payload => console.log(\"phoenix replied:\", payload))\n * .receive(\"error\", err => console.log(\"phoenix errored\", err))\n * .receive(\"timeout\", () => console.log(\"timed out pushing\"))\n * @param {string} event\n * @param {Object} payload\n * @param {number} [timeout]\n * @returns {Push}\n */\n push(event, payload, timeout = this.timeout){\n payload = payload || {}\n if(!this.joinedOnce){\n throw new Error(`tried to push '${event}' to '${this.topic}' before joining. Use channel.join() before pushing events`)\n }\n let pushEvent = new Push(this, event, function (){ return payload }, timeout)\n if(this.canPush()){\n pushEvent.send()\n } else {\n pushEvent.startTimeout()\n this.pushBuffer.push(pushEvent)\n }\n\n return pushEvent\n }\n\n /** Leaves the channel\n *\n * Unsubscribes from server events, and\n * instructs channel to terminate on server\n *\n * Triggers onClose() hooks\n *\n * To receive leave acknowledgements, use the `receive`\n * hook to bind to the server ack, ie:\n *\n * @example\n * channel.leave().receive(\"ok\", () => alert(\"left!\") )\n *\n * @param {integer} timeout\n * @returns {Push}\n */\n leave(timeout = this.timeout){\n this.rejoinTimer.reset()\n this.joinPush.cancelTimeout()\n\n this.state = CHANNEL_STATES.leaving\n let onClose = () => {\n if(this.socket.hasLogger()) this.socket.log(\"channel\", `leave ${this.topic}`)\n this.trigger(CHANNEL_EVENTS.close, \"leave\")\n }\n let leavePush = new Push(this, CHANNEL_EVENTS.leave, closure({}), timeout)\n leavePush.receive(\"ok\", () => onClose())\n .receive(\"timeout\", () => onClose())\n leavePush.send()\n if(!this.canPush()){ leavePush.trigger(\"ok\", {}) }\n\n return leavePush\n }\n\n /**\n * Overridable message hook\n *\n * Receives all events for specialized message handling\n * before dispatching to the channel callbacks.\n *\n * Must return the payload, modified or unmodified\n * @param {string} event\n * @param {Object} payload\n * @param {integer} ref\n * @returns {Object}\n */\n onMessage(_event, payload, _ref){ return payload }\n\n /**\n * @private\n */\n isMember(topic, event, payload, joinRef){\n if(this.topic !== topic){ return false }\n\n if(joinRef && joinRef !== this.joinRef()){\n if(this.socket.hasLogger()) this.socket.log(\"channel\", \"dropping outdated message\", {topic, event, payload, joinRef})\n return false\n } else {\n return true\n }\n }\n\n /**\n * @private\n */\n joinRef(){ return this.joinPush.ref }\n\n /**\n * @private\n */\n rejoin(timeout = this.timeout){\n if(this.isLeaving()){ return }\n this.socket.leaveOpenTopic(this.topic)\n this.state = CHANNEL_STATES.joining\n this.joinPush.resend(timeout)\n }\n\n /**\n * @private\n */\n trigger(event, payload, ref, joinRef){\n let handledPayload = this.onMessage(event, payload, ref, joinRef)\n if(payload && !handledPayload){ throw new Error(\"channel onMessage callbacks must return the payload, modified or unmodified\") }\n\n let eventBindings = this.bindings.filter(bind => bind.event === event)\n\n for(let i = 0; i < eventBindings.length; i++){\n let bind = eventBindings[i]\n bind.callback(handledPayload, ref, joinRef || this.joinRef())\n }\n }\n\n /**\n * @private\n */\n replyEventName(ref){ return `chan_reply_${ref}` }\n\n /**\n * @private\n */\n isClosed(){ return this.state === CHANNEL_STATES.closed }\n\n /**\n * @private\n */\n isErrored(){ return this.state === CHANNEL_STATES.errored }\n\n /**\n * @private\n */\n isJoined(){ return this.state === CHANNEL_STATES.joined }\n\n /**\n * @private\n */\n isJoining(){ return this.state === CHANNEL_STATES.joining }\n\n /**\n * @private\n */\n isLeaving(){ return this.state === CHANNEL_STATES.leaving }\n}\n", "import {\n global,\n XHR_STATES\n} from \"./constants\"\n\nexport default class Ajax {\n\n static request(method, endPoint, accept, body, timeout, ontimeout, callback){\n if(global.XDomainRequest){\n let req = new global.XDomainRequest() // IE8, IE9\n this.xdomainRequest(req, method, endPoint, body, timeout, ontimeout, callback)\n } else {\n let req = new global.XMLHttpRequest() // IE7+, Firefox, Chrome, Opera, Safari\n this.xhrRequest(req, method, endPoint, accept, body, timeout, ontimeout, callback)\n }\n }\n\n static xdomainRequest(req, method, endPoint, body, timeout, ontimeout, callback){\n req.timeout = timeout\n req.open(method, endPoint)\n req.onload = () => {\n let response = this.parseJSON(req.responseText)\n callback && callback(response)\n }\n if(ontimeout){ req.ontimeout = ontimeout }\n\n // Work around bug in IE9 that requires an attached onprogress handler\n req.onprogress = () => { }\n\n req.send(body)\n }\n\n static xhrRequest(req, method, endPoint, accept, body, timeout, ontimeout, callback){\n req.open(method, endPoint, true)\n req.timeout = timeout\n req.setRequestHeader(\"Content-Type\", accept)\n req.onerror = () => { callback && callback(null) }\n req.onreadystatechange = () => {\n if(req.readyState === XHR_STATES.complete && callback){\n let response = this.parseJSON(req.responseText)\n callback(response)\n }\n }\n if(ontimeout){ req.ontimeout = ontimeout }\n\n req.send(body)\n }\n\n static parseJSON(resp){\n if(!resp || resp === \"\"){ return null }\n\n try {\n return JSON.parse(resp)\n } catch (e){\n console && console.log(\"failed to parse JSON response\", resp)\n return null\n }\n }\n\n static serialize(obj, parentKey){\n let queryStr = []\n for(var key in obj){\n if(!Object.prototype.hasOwnProperty.call(obj, key)){ continue }\n let paramKey = parentKey ? `${parentKey}[${key}]` : key\n let paramVal = obj[key]\n if(typeof paramVal === \"object\"){\n queryStr.push(this.serialize(paramVal, paramKey))\n } else {\n queryStr.push(encodeURIComponent(paramKey) + \"=\" + encodeURIComponent(paramVal))\n }\n }\n return queryStr.join(\"&\")\n }\n\n static appendParams(url, params){\n if(Object.keys(params).length === 0){ return url }\n\n let prefix = url.match(/\\?/) ? \"&\" : \"?\"\n return `${url}${prefix}${this.serialize(params)}`\n }\n}\n", "import {\n SOCKET_STATES,\n TRANSPORTS\n} from \"./constants\"\n\nimport Ajax from \"./ajax\"\n\nexport default class LongPoll {\n\n constructor(endPoint){\n this.endPoint = null\n this.token = null\n this.skipHeartbeat = true\n this.onopen = function (){ } // noop\n this.onerror = function (){ } // noop\n this.onmessage = function (){ } // noop\n this.onclose = function (){ } // noop\n this.pollEndpoint = this.normalizeEndpoint(endPoint)\n this.readyState = SOCKET_STATES.connecting\n this.poll()\n }\n\n normalizeEndpoint(endPoint){\n return (endPoint\n .replace(\"ws://\", \"http://\")\n .replace(\"wss://\", \"https://\")\n .replace(new RegExp(\"(.*)\\/\" + TRANSPORTS.websocket), \"$1/\" + TRANSPORTS.longpoll))\n }\n\n endpointURL(){\n return Ajax.appendParams(this.pollEndpoint, {token: this.token})\n }\n\n closeAndRetry(code, reason, wasClean){\n this.close(code, reason, wasClean)\n this.readyState = SOCKET_STATES.connecting\n }\n\n ontimeout(){\n this.onerror(\"timeout\")\n this.closeAndRetry(1005, \"timeout\", false)\n }\n\n poll(){\n if(!(this.readyState === SOCKET_STATES.open || this.readyState === SOCKET_STATES.connecting)){ return }\n\n Ajax.request(\"GET\", this.endpointURL(), \"application/json\", null, this.timeout, this.ontimeout.bind(this), (resp) => {\n if(resp){\n var {status, token, messages} = resp\n this.token = token\n } else {\n status = 0\n }\n\n switch(status){\n case 200:\n messages.forEach(msg => {\n // Tasks are what things like event handlers, setTimeout callbacks,\n // promise resolves and more are run within.\n // In modern browsers, there are two different kinds of tasks,\n // microtasks and macrotasks.\n // Microtasks are mainly used for Promises, while macrotasks are\n // used for everything else.\n // Microtasks always have priority over macrotasks. If the JS engine\n // is looking for a task to run, it will always try to empty the\n // microtask queue before attempting to run anything from the\n // macrotask queue.\n //\n // For the WebSocket transport, messages always arrive in their own\n // event. This means that if any promises are resolved from within,\n // their callbacks will always finish execution by the time the\n // next message event handler is run.\n //\n // In order to emulate this behaviour, we need to make sure each\n // onmessage handler is run within it's own macrotask.\n setTimeout(() => {\n this.onmessage({data: msg})\n }, 0)\n })\n this.poll()\n break\n case 204:\n this.poll()\n break\n case 410:\n this.readyState = SOCKET_STATES.open\n this.onopen({})\n this.poll()\n break\n case 403:\n this.onerror(403)\n this.close(1008, \"forbidden\", false)\n break\n case 0:\n case 500:\n this.onerror(500)\n this.closeAndRetry(1011, \"internal server error\", 500)\n break\n default: throw new Error(`unhandled poll status ${status}`)\n }\n })\n }\n\n send(body){\n Ajax.request(\"POST\", this.endpointURL(), \"application/json\", body, this.timeout, this.onerror.bind(this, \"timeout\"), (resp) => {\n if(!resp || resp.status !== 200){\n this.onerror(resp && resp.status)\n this.closeAndRetry(1011, \"internal server error\", false)\n }\n })\n }\n\n close(code, reason, wasClean){\n this.readyState = SOCKET_STATES.closed\n let opts = Object.assign({code: 1000, reason: undefined, wasClean: true}, {code, reason, wasClean})\n if(typeof(CloseEvent) !== \"undefined\"){\n this.onclose(new CloseEvent(\"close\", opts))\n } else {\n this.onclose(opts)\n }\n }\n}\n", "/**\n * Initializes the Presence\n * @param {Channel} channel - The Channel\n * @param {Object} opts - The options,\n * for example `{events: {state: \"state\", diff: \"diff\"}}`\n */\nexport default class Presence {\n\n constructor(channel, opts = {}){\n let events = opts.events || {state: \"presence_state\", diff: \"presence_diff\"}\n this.state = {}\n this.pendingDiffs = []\n this.channel = channel\n this.joinRef = null\n this.caller = {\n onJoin: function (){ },\n onLeave: function (){ },\n onSync: function (){ }\n }\n\n this.channel.on(events.state, newState => {\n let {onJoin, onLeave, onSync} = this.caller\n\n this.joinRef = this.channel.joinRef()\n this.state = Presence.syncState(this.state, newState, onJoin, onLeave)\n\n this.pendingDiffs.forEach(diff => {\n this.state = Presence.syncDiff(this.state, diff, onJoin, onLeave)\n })\n this.pendingDiffs = []\n onSync()\n })\n\n this.channel.on(events.diff, diff => {\n let {onJoin, onLeave, onSync} = this.caller\n\n if(this.inPendingSyncState()){\n this.pendingDiffs.push(diff)\n } else {\n this.state = Presence.syncDiff(this.state, diff, onJoin, onLeave)\n onSync()\n }\n })\n }\n\n onJoin(callback){ this.caller.onJoin = callback }\n\n onLeave(callback){ this.caller.onLeave = callback }\n\n onSync(callback){ this.caller.onSync = callback }\n\n list(by){ return Presence.list(this.state, by) }\n\n inPendingSyncState(){\n return !this.joinRef || (this.joinRef !== this.channel.joinRef())\n }\n\n // lower-level public static API\n\n /**\n * Used to sync the list of presences on the server\n * with the client's state. An optional `onJoin` and `onLeave` callback can\n * be provided to react to changes in the client's local presences across\n * disconnects and reconnects with the server.\n *\n * @returns {Presence}\n */\n static syncState(currentState, newState, onJoin, onLeave){\n let state = this.clone(currentState)\n let joins = {}\n let leaves = {}\n\n this.map(state, (key, presence) => {\n if(!newState[key]){\n leaves[key] = presence\n }\n })\n this.map(newState, (key, newPresence) => {\n let currentPresence = state[key]\n if(currentPresence){\n let newRefs = newPresence.metas.map(m => m.phx_ref)\n let curRefs = currentPresence.metas.map(m => m.phx_ref)\n let joinedMetas = newPresence.metas.filter(m => curRefs.indexOf(m.phx_ref) < 0)\n let leftMetas = currentPresence.metas.filter(m => newRefs.indexOf(m.phx_ref) < 0)\n if(joinedMetas.length > 0){\n joins[key] = newPresence\n joins[key].metas = joinedMetas\n }\n if(leftMetas.length > 0){\n leaves[key] = this.clone(currentPresence)\n leaves[key].metas = leftMetas\n }\n } else {\n joins[key] = newPresence\n }\n })\n return this.syncDiff(state, {joins: joins, leaves: leaves}, onJoin, onLeave)\n }\n\n /**\n *\n * Used to sync a diff of presence join and leave\n * events from the server, as they happen. Like `syncState`, `syncDiff`\n * accepts optional `onJoin` and `onLeave` callbacks to react to a user\n * joining or leaving from a device.\n *\n * @returns {Presence}\n */\n static syncDiff(state, diff, onJoin, onLeave){\n let {joins, leaves} = this.clone(diff)\n if(!onJoin){ onJoin = function (){ } }\n if(!onLeave){ onLeave = function (){ } }\n\n this.map(joins, (key, newPresence) => {\n let currentPresence = state[key]\n state[key] = this.clone(newPresence)\n if(currentPresence){\n let joinedRefs = state[key].metas.map(m => m.phx_ref)\n let curMetas = currentPresence.metas.filter(m => joinedRefs.indexOf(m.phx_ref) < 0)\n state[key].metas.unshift(...curMetas)\n }\n onJoin(key, currentPresence, newPresence)\n })\n this.map(leaves, (key, leftPresence) => {\n let currentPresence = state[key]\n if(!currentPresence){ return }\n let refsToRemove = leftPresence.metas.map(m => m.phx_ref)\n currentPresence.metas = currentPresence.metas.filter(p => {\n return refsToRemove.indexOf(p.phx_ref) < 0\n })\n onLeave(key, currentPresence, leftPresence)\n if(currentPresence.metas.length === 0){\n delete state[key]\n }\n })\n return state\n }\n\n /**\n * Returns the array of presences, with selected metadata.\n *\n * @param {Object} presences\n * @param {Function} chooser\n *\n * @returns {Presence}\n */\n static list(presences, chooser){\n if(!chooser){ chooser = function (key, pres){ return pres } }\n\n return this.map(presences, (key, presence) => {\n return chooser(key, presence)\n })\n }\n\n // private\n\n static map(obj, func){\n return Object.getOwnPropertyNames(obj).map(key => func(key, obj[key]))\n }\n\n static clone(obj){ return JSON.parse(JSON.stringify(obj)) }\n}\n", "/* The default serializer for encoding and decoding messages */\nimport {\n CHANNEL_EVENTS\n} from \"./constants\"\n\nexport default {\n HEADER_LENGTH: 1,\n META_LENGTH: 4,\n KINDS: {push: 0, reply: 1, broadcast: 2},\n\n encode(msg, callback){\n if(msg.payload.constructor === ArrayBuffer){\n return callback(this.binaryEncode(msg))\n } else {\n let payload = [msg.join_ref, msg.ref, msg.topic, msg.event, msg.payload]\n return callback(JSON.stringify(payload))\n }\n },\n\n decode(rawPayload, callback){\n if(rawPayload.constructor === ArrayBuffer){\n return callback(this.binaryDecode(rawPayload))\n } else {\n let [join_ref, ref, topic, event, payload] = JSON.parse(rawPayload)\n return callback({join_ref, ref, topic, event, payload})\n }\n },\n\n // private\n\n binaryEncode(message){\n let {join_ref, ref, event, topic, payload} = message\n let metaLength = this.META_LENGTH + join_ref.length + ref.length + topic.length + event.length\n let header = new ArrayBuffer(this.HEADER_LENGTH + metaLength)\n let view = new DataView(header)\n let offset = 0\n\n view.setUint8(offset++, this.KINDS.push) // kind\n view.setUint8(offset++, join_ref.length)\n view.setUint8(offset++, ref.length)\n view.setUint8(offset++, topic.length)\n view.setUint8(offset++, event.length)\n Array.from(join_ref, char => view.setUint8(offset++, char.charCodeAt(0)))\n Array.from(ref, char => view.setUint8(offset++, char.charCodeAt(0)))\n Array.from(topic, char => view.setUint8(offset++, char.charCodeAt(0)))\n Array.from(event, char => view.setUint8(offset++, char.charCodeAt(0)))\n\n var combined = new Uint8Array(header.byteLength + payload.byteLength)\n combined.set(new Uint8Array(header), 0)\n combined.set(new Uint8Array(payload), header.byteLength)\n\n return combined.buffer\n },\n\n binaryDecode(buffer){\n let view = new DataView(buffer)\n let kind = view.getUint8(0)\n let decoder = new TextDecoder()\n switch(kind){\n case this.KINDS.push: return this.decodePush(buffer, view, decoder)\n case this.KINDS.reply: return this.decodeReply(buffer, view, decoder)\n case this.KINDS.broadcast: return this.decodeBroadcast(buffer, view, decoder)\n }\n },\n\n decodePush(buffer, view, decoder){\n let joinRefSize = view.getUint8(1)\n let topicSize = view.getUint8(2)\n let eventSize = view.getUint8(3)\n let offset = this.HEADER_LENGTH + this.META_LENGTH - 1 // pushes have no ref\n let joinRef = decoder.decode(buffer.slice(offset, offset + joinRefSize))\n offset = offset + joinRefSize\n let topic = decoder.decode(buffer.slice(offset, offset + topicSize))\n offset = offset + topicSize\n let event = decoder.decode(buffer.slice(offset, offset + eventSize))\n offset = offset + eventSize\n let data = buffer.slice(offset, buffer.byteLength)\n return {join_ref: joinRef, ref: null, topic: topic, event: event, payload: data}\n },\n\n decodeReply(buffer, view, decoder){\n let joinRefSize = view.getUint8(1)\n let refSize = view.getUint8(2)\n let topicSize = view.getUint8(3)\n let eventSize = view.getUint8(4)\n let offset = this.HEADER_LENGTH + this.META_LENGTH\n let joinRef = decoder.decode(buffer.slice(offset, offset + joinRefSize))\n offset = offset + joinRefSize\n let ref = decoder.decode(buffer.slice(offset, offset + refSize))\n offset = offset + refSize\n let topic = decoder.decode(buffer.slice(offset, offset + topicSize))\n offset = offset + topicSize\n let event = decoder.decode(buffer.slice(offset, offset + eventSize))\n offset = offset + eventSize\n let data = buffer.slice(offset, buffer.byteLength)\n let payload = {status: event, response: data}\n return {join_ref: joinRef, ref: ref, topic: topic, event: CHANNEL_EVENTS.reply, payload: payload}\n },\n\n decodeBroadcast(buffer, view, decoder){\n let topicSize = view.getUint8(1)\n let eventSize = view.getUint8(2)\n let offset = this.HEADER_LENGTH + 2\n let topic = decoder.decode(buffer.slice(offset, offset + topicSize))\n offset = offset + topicSize\n let event = decoder.decode(buffer.slice(offset, offset + eventSize))\n offset = offset + eventSize\n let data = buffer.slice(offset, buffer.byteLength)\n\n return {join_ref: null, ref: null, topic: topic, event: event, payload: data}\n }\n}\n", "import {\n global,\n phxWindow,\n CHANNEL_EVENTS,\n DEFAULT_TIMEOUT,\n DEFAULT_VSN,\n SOCKET_STATES,\n TRANSPORTS,\n WS_CLOSE_NORMAL\n} from \"./constants\"\n\nimport {\n closure\n} from \"./utils\"\n\nimport Ajax from \"./ajax\"\nimport Channel from \"./channel\"\nimport LongPoll from \"./longpoll\"\nimport Serializer from \"./serializer\"\nimport Timer from \"./timer\"\n\n/** Initializes the Socket *\n *\n * For IE8 support use an ES5-shim (https://github.com/es-shims/es5-shim)\n *\n * @param {string} endPoint - The string WebSocket endpoint, ie, `\"ws://example.com/socket\"`,\n * `\"wss://example.com\"`\n * `\"/socket\"` (inherited host & protocol)\n * @param {Object} [opts] - Optional configuration\n * @param {Function} [opts.transport] - The Websocket Transport, for example WebSocket or Phoenix.LongPoll.\n *\n * Defaults to WebSocket with automatic LongPoll fallback.\n * @param {Function} [opts.encode] - The function to encode outgoing messages.\n *\n * Defaults to JSON encoder.\n *\n * @param {Function} [opts.decode] - The function to decode incoming messages.\n *\n * Defaults to JSON:\n *\n * ```javascript\n * (payload, callback) => callback(JSON.parse(payload))\n * ```\n *\n * @param {number} [opts.timeout] - The default timeout in milliseconds to trigger push timeouts.\n *\n * Defaults `DEFAULT_TIMEOUT`\n * @param {number} [opts.heartbeatIntervalMs] - The millisec interval to send a heartbeat message\n * @param {number} [opts.reconnectAfterMs] - The optional function that returns the millsec\n * socket reconnect interval.\n *\n * Defaults to stepped backoff of:\n *\n * ```javascript\n * function(tries){\n * return [10, 50, 100, 150, 200, 250, 500, 1000, 2000][tries - 1] || 5000\n * }\n * ````\n *\n * @param {number} [opts.rejoinAfterMs] - The optional function that returns the millsec\n * rejoin interval for individual channels.\n *\n * ```javascript\n * function(tries){\n * return [1000, 2000, 5000][tries - 1] || 10000\n * }\n * ````\n *\n * @param {Function} [opts.logger] - The optional function for specialized logging, ie:\n *\n * ```javascript\n * function(kind, msg, data) {\n * console.log(`${kind}: ${msg}`, data)\n * }\n * ```\n *\n * @param {number} [opts.longpollerTimeout] - The maximum timeout of a long poll AJAX request.\n *\n * Defaults to 20s (double the server long poll timer).\n *\n * @param {(Object|function)} [opts.params] - The optional params to pass when connecting\n * @param {string} [opts.binaryType] - The binary type to use for binary WebSocket frames.\n *\n * Defaults to \"arraybuffer\"\n *\n * @param {vsn} [opts.vsn] - The serializer's protocol version to send on connect.\n *\n * Defaults to DEFAULT_VSN.\n*/\nexport default class Socket {\n constructor(endPoint, opts = {}){\n this.stateChangeCallbacks = {open: [], close: [], error: [], message: []}\n this.channels = []\n this.sendBuffer = []\n this.ref = 0\n this.timeout = opts.timeout || DEFAULT_TIMEOUT\n this.transport = opts.transport || global.WebSocket || LongPoll\n this.establishedConnections = 0\n this.defaultEncoder = Serializer.encode.bind(Serializer)\n this.defaultDecoder = Serializer.decode.bind(Serializer)\n this.closeWasClean = false\n this.binaryType = opts.binaryType || \"arraybuffer\"\n this.connectClock = 1\n if(this.transport !== LongPoll){\n this.encode = opts.encode || this.defaultEncoder\n this.decode = opts.decode || this.defaultDecoder\n } else {\n this.encode = this.defaultEncoder\n this.decode = this.defaultDecoder\n }\n let awaitingConnectionOnPageShow = null\n if(phxWindow && phxWindow.addEventListener){\n phxWindow.addEventListener(\"pagehide\", _e => {\n if(this.conn){\n this.disconnect()\n awaitingConnectionOnPageShow = this.connectClock\n }\n })\n phxWindow.addEventListener(\"pageshow\", _e => {\n if(awaitingConnectionOnPageShow === this.connectClock){\n awaitingConnectionOnPageShow = null\n this.connect()\n }\n })\n }\n this.heartbeatIntervalMs = opts.heartbeatIntervalMs || 30000\n this.rejoinAfterMs = (tries) => {\n if(opts.rejoinAfterMs){\n return opts.rejoinAfterMs(tries)\n } else {\n return [1000, 2000, 5000][tries - 1] || 10000\n }\n }\n this.reconnectAfterMs = (tries) => {\n if(opts.reconnectAfterMs){\n return opts.reconnectAfterMs(tries)\n } else {\n return [10, 50, 100, 150, 200, 250, 500, 1000, 2000][tries - 1] || 5000\n }\n }\n this.logger = opts.logger || null\n this.longpollerTimeout = opts.longpollerTimeout || 20000\n this.params = closure(opts.params || {})\n this.endPoint = `${endPoint}/${TRANSPORTS.websocket}`\n this.vsn = opts.vsn || DEFAULT_VSN\n this.heartbeatTimer = null\n this.pendingHeartbeatRef = null\n this.reconnectTimer = new Timer(() => {\n this.teardown(() => this.connect())\n }, this.reconnectAfterMs)\n }\n\n /**\n * Disconnects and replaces the active transport\n *\n * @param {Function} newTransport - The new transport class to instantiate\n *\n */\n replaceTransport(newTransport){\n this.connectClock++\n this.closeWasClean = true\n this.reconnectTimer.reset()\n if(this.conn){\n this.conn.close()\n this.conn = null\n }\n this.transport = newTransport\n }\n\n /**\n * Returns the socket protocol\n *\n * @returns {string}\n */\n protocol(){ return location.protocol.match(/^https/) ? \"wss\" : \"ws\" }\n\n /**\n * The fully qualifed socket url\n *\n * @returns {string}\n */\n endPointURL(){\n let uri = Ajax.appendParams(\n Ajax.appendParams(this.endPoint, this.params()), {vsn: this.vsn})\n if(uri.charAt(0) !== \"/\"){ return uri }\n if(uri.charAt(1) === \"/\"){ return `${this.protocol()}:${uri}` }\n\n return `${this.protocol()}://${location.host}${uri}`\n }\n\n /**\n * Disconnects the socket\n *\n * See https://developer.mozilla.org/en-US/docs/Web/API/CloseEvent#Status_codes for valid status codes.\n *\n * @param {Function} callback - Optional callback which is called after socket is disconnected.\n * @param {integer} code - A status code for disconnection (Optional).\n * @param {string} reason - A textual description of the reason to disconnect. (Optional)\n */\n disconnect(callback, code, reason){\n this.connectClock++\n this.closeWasClean = true\n this.reconnectTimer.reset()\n this.teardown(callback, code, reason)\n }\n\n /**\n *\n * @param {Object} params - The params to send when connecting, for example `{user_id: userToken}`\n *\n * Passing params to connect is deprecated; pass them in the Socket constructor instead:\n * `new Socket(\"/socket\", {params: {user_id: userToken}})`.\n */\n connect(params){\n this.connectClock++\n if(params){\n console && console.log(\"passing params to connect is deprecated. Instead pass :params to the Socket constructor\")\n this.params = closure(params)\n }\n if(this.conn){ return }\n this.closeWasClean = false\n this.conn = new this.transport(this.endPointURL())\n this.conn.binaryType = this.binaryType\n this.conn.timeout = this.longpollerTimeout\n this.conn.onopen = () => this.onConnOpen()\n this.conn.onerror = error => this.onConnError(error)\n this.conn.onmessage = event => this.onConnMessage(event)\n this.conn.onclose = event => this.onConnClose(event)\n }\n\n /**\n * Logs the message. Override `this.logger` for specialized logging. noops by default\n * @param {string} kind\n * @param {string} msg\n * @param {Object} data\n */\n log(kind, msg, data){ this.logger(kind, msg, data) }\n\n /**\n * Returns true if a logger has been set on this socket.\n */\n hasLogger(){ return this.logger !== null }\n\n /**\n * Registers callbacks for connection open events\n *\n * @example socket.onOpen(function(){ console.info(\"the socket was opened\") })\n *\n * @param {Function} callback\n */\n onOpen(callback){\n let ref = this.makeRef()\n this.stateChangeCallbacks.open.push([ref, callback])\n return ref\n }\n\n /**\n * Registers callbacks for connection close events\n * @param {Function} callback\n */\n onClose(callback){\n let ref = this.makeRef()\n this.stateChangeCallbacks.close.push([ref, callback])\n return ref\n }\n\n /**\n * Registers callbacks for connection error events\n *\n * @example socket.onError(function(error){ alert(\"An error occurred\") })\n *\n * @param {Function} callback\n */\n onError(callback){\n let ref = this.makeRef()\n this.stateChangeCallbacks.error.push([ref, callback])\n return ref\n }\n\n /**\n * Registers callbacks for connection message events\n * @param {Function} callback\n */\n onMessage(callback){\n let ref = this.makeRef()\n this.stateChangeCallbacks.message.push([ref, callback])\n return ref\n }\n\n /**\n * Pings the server and invokes the callback with the RTT in milliseconds\n * @param {Function} callback\n *\n * Returns true if the ping was pushed or false if unable to be pushed.\n */\n ping(callback){\n if(!this.isConnected()){ return false }\n let ref = this.makeRef()\n let startTime = Date.now()\n this.push({topic: \"phoenix\", event: \"heartbeat\", payload: {}, ref: ref})\n let onMsgRef = this.onMessage(msg => {\n if(msg.ref === ref){\n this.off([onMsgRef])\n callback(Date.now() - startTime)\n }\n })\n return true\n }\n\n /**\n * @private\n */\n onConnOpen(){\n if(this.hasLogger()) this.log(\"transport\", `connected to ${this.endPointURL()}`)\n this.closeWasClean = false\n this.establishedConnections++\n this.flushSendBuffer()\n this.reconnectTimer.reset()\n this.resetHeartbeat()\n this.stateChangeCallbacks.open.forEach(([, callback]) => callback())\n }\n\n /**\n * @private\n */\n\n heartbeatTimeout(){\n if(this.pendingHeartbeatRef){\n this.pendingHeartbeatRef = null\n if(this.hasLogger()){ this.log(\"transport\", \"heartbeat timeout. Attempting to re-establish connection\") }\n this.abnormalClose(\"heartbeat timeout\")\n }\n }\n\n resetHeartbeat(){\n if(this.conn && this.conn.skipHeartbeat){ return }\n this.pendingHeartbeatRef = null\n clearTimeout(this.heartbeatTimer)\n setTimeout(() => this.sendHeartbeat(), this.heartbeatIntervalMs)\n }\n\n teardown(callback, code, reason){\n if(!this.conn){\n return callback && callback()\n }\n\n this.waitForBufferDone(() => {\n if(this.conn){\n if(code){ this.conn.close(code, reason || \"\") } else { this.conn.close() }\n }\n\n this.waitForSocketClosed(() => {\n if(this.conn){\n this.conn.onclose = function (){ } // noop\n this.conn = null\n }\n\n callback && callback()\n })\n })\n }\n\n waitForBufferDone(callback, tries = 1){\n if(tries === 5 || !this.conn || !this.conn.bufferedAmount){\n callback()\n return\n }\n\n setTimeout(() => {\n this.waitForBufferDone(callback, tries + 1)\n }, 150 * tries)\n }\n\n waitForSocketClosed(callback, tries = 1){\n if(tries === 5 || !this.conn || this.conn.readyState === SOCKET_STATES.closed){\n callback()\n return\n }\n\n setTimeout(() => {\n this.waitForSocketClosed(callback, tries + 1)\n }, 150 * tries)\n }\n\n onConnClose(event){\n let closeCode = event && event.code\n if(this.hasLogger()) this.log(\"transport\", \"close\", event)\n this.triggerChanError()\n clearTimeout(this.heartbeatTimer)\n if(!this.closeWasClean && closeCode !== 1000){\n this.reconnectTimer.scheduleTimeout()\n }\n this.stateChangeCallbacks.close.forEach(([, callback]) => callback(event))\n }\n\n /**\n * @private\n */\n onConnError(error){\n if(this.hasLogger()) this.log(\"transport\", error)\n let transportBefore = this.transport\n let establishedBefore = this.establishedConnections\n this.stateChangeCallbacks.error.forEach(([, callback]) => {\n callback(error, transportBefore, establishedBefore)\n })\n if(transportBefore === this.transport || establishedBefore > 0){\n this.triggerChanError()\n }\n }\n\n /**\n * @private\n */\n triggerChanError(){\n this.channels.forEach(channel => {\n if(!(channel.isErrored() || channel.isLeaving() || channel.isClosed())){\n channel.trigger(CHANNEL_EVENTS.error)\n }\n })\n }\n\n /**\n * @returns {string}\n */\n connectionState(){\n switch(this.conn && this.conn.readyState){\n case SOCKET_STATES.connecting: return \"connecting\"\n case SOCKET_STATES.open: return \"open\"\n case SOCKET_STATES.closing: return \"closing\"\n default: return \"closed\"\n }\n }\n\n /**\n * @returns {boolean}\n */\n isConnected(){ return this.connectionState() === \"open\" }\n\n /**\n * @private\n *\n * @param {Channel}\n */\n remove(channel){\n this.off(channel.stateChangeRefs)\n this.channels = this.channels.filter(c => c.joinRef() !== channel.joinRef())\n }\n\n /**\n * Removes `onOpen`, `onClose`, `onError,` and `onMessage` registrations.\n *\n * @param {refs} - list of refs returned by calls to\n * `onOpen`, `onClose`, `onError,` and `onMessage`\n */\n off(refs){\n for(let key in this.stateChangeCallbacks){\n this.stateChangeCallbacks[key] = this.stateChangeCallbacks[key].filter(([ref]) => {\n return refs.indexOf(ref) === -1\n })\n }\n }\n\n /**\n * Initiates a new channel for the given topic\n *\n * @param {string} topic\n * @param {Object} chanParams - Parameters for the channel\n * @returns {Channel}\n */\n channel(topic, chanParams = {}){\n let chan = new Channel(topic, chanParams, this)\n this.channels.push(chan)\n return chan\n }\n\n /**\n * @param {Object} data\n */\n push(data){\n if(this.hasLogger()){\n let {topic, event, payload, ref, join_ref} = data\n this.log(\"push\", `${topic} ${event} (${join_ref}, ${ref})`, payload)\n }\n\n if(this.isConnected()){\n this.encode(data, result => this.conn.send(result))\n } else {\n this.sendBuffer.push(() => this.encode(data, result => this.conn.send(result)))\n }\n }\n\n /**\n * Return the next message ref, accounting for overflows\n * @returns {string}\n */\n makeRef(){\n let newRef = this.ref + 1\n if(newRef === this.ref){ this.ref = 0 } else { this.ref = newRef }\n\n return this.ref.toString()\n }\n\n sendHeartbeat(){\n if(this.pendingHeartbeatRef && !this.isConnected()){ return }\n this.pendingHeartbeatRef = this.makeRef()\n this.push({topic: \"phoenix\", event: \"heartbeat\", payload: {}, ref: this.pendingHeartbeatRef})\n this.heartbeatTimer = setTimeout(() => this.heartbeatTimeout(), this.heartbeatIntervalMs)\n }\n\n abnormalClose(reason){\n this.closeWasClean = false\n if(this.isConnected()){ this.conn.close(WS_CLOSE_NORMAL, reason) }\n }\n\n flushSendBuffer(){\n if(this.isConnected() && this.sendBuffer.length > 0){\n this.sendBuffer.forEach(callback => callback())\n this.sendBuffer = []\n }\n }\n\n onConnMessage(rawMessage){\n this.decode(rawMessage.data, msg => {\n let {topic, event, payload, ref, join_ref} = msg\n if(ref && ref === this.pendingHeartbeatRef){\n clearTimeout(this.heartbeatTimer)\n this.pendingHeartbeatRef = null\n setTimeout(() => this.sendHeartbeat(), this.heartbeatIntervalMs)\n }\n\n if(this.hasLogger()) this.log(\"receive\", `${payload.status || \"\"} ${topic} ${event} ${ref && \"(\" + ref + \")\" || \"\"}`, payload)\n\n for(let i = 0; i < this.channels.length; i++){\n const channel = this.channels[i]\n if(!channel.isMember(topic, event, payload, join_ref)){ continue }\n channel.trigger(event, payload, ref, join_ref)\n }\n\n for(let i = 0; i < this.stateChangeCallbacks.message.length; i++){\n let [, callback] = this.stateChangeCallbacks.message[i]\n callback(msg)\n }\n })\n }\n\n leaveOpenTopic(topic){\n let dupChannel = this.channels.find(c => c.topic === topic && (c.isJoined() || c.isJoining()))\n if(dupChannel){\n if(this.hasLogger()) this.log(\"transport\", `leaving duplicate topic \"${topic}\"`)\n dupChannel.leave()\n }\n }\n}\n"], - "mappings": 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+ "sourcesContent": ["// wraps value in closure or returns closure\nexport let closure = (value) => {\n if(typeof value === \"function\"){\n return value\n } else {\n let closure = function (){ return value }\n return closure\n }\n}\n", "export const globalSelf = typeof self !== \"undefined\" ? self : null\nexport const phxWindow = typeof window !== \"undefined\" ? window : null\nexport const global = globalSelf || phxWindow || global\nexport const DEFAULT_VSN = \"2.0.0\"\nexport const SOCKET_STATES = {connecting: 0, open: 1, closing: 2, closed: 3}\nexport const DEFAULT_TIMEOUT = 10000\nexport const WS_CLOSE_NORMAL = 1000\nexport const CHANNEL_STATES = {\n closed: \"closed\",\n errored: \"errored\",\n joined: \"joined\",\n joining: \"joining\",\n leaving: \"leaving\",\n}\nexport const CHANNEL_EVENTS = {\n close: \"phx_close\",\n error: \"phx_error\",\n join: \"phx_join\",\n reply: \"phx_reply\",\n leave: \"phx_leave\"\n}\n\nexport const TRANSPORTS = {\n longpoll: \"longpoll\",\n websocket: \"websocket\"\n}\nexport const XHR_STATES = {\n complete: 4\n}\n", "/**\n * Initializes the Push\n * @param {Channel} channel - The Channel\n * @param {string} event - The event, for example `\"phx_join\"`\n * @param {Object} payload - The payload, for example `{user_id: 123}`\n * @param {number} timeout - The push timeout in milliseconds\n */\nexport default class Push {\n constructor(channel, event, payload, timeout){\n this.channel = channel\n this.event = event\n this.payload = payload || function (){ return {} }\n this.receivedResp = null\n this.timeout = timeout\n this.timeoutTimer = null\n this.recHooks = []\n this.sent = false\n }\n\n /**\n *\n * @param {number} timeout\n */\n resend(timeout){\n this.timeout = timeout\n this.reset()\n this.send()\n }\n\n /**\n *\n */\n send(){\n if(this.hasReceived(\"timeout\")){ return }\n this.startTimeout()\n this.sent = true\n this.channel.socket.push({\n topic: this.channel.topic,\n event: this.event,\n payload: this.payload(),\n ref: this.ref,\n join_ref: this.channel.joinRef()\n })\n }\n\n /**\n *\n * @param {*} status\n * @param {*} callback\n */\n receive(status, callback){\n if(this.hasReceived(status)){\n callback(this.receivedResp.response)\n }\n\n this.recHooks.push({status, callback})\n return this\n }\n\n /**\n * @private\n */\n reset(){\n this.cancelRefEvent()\n this.ref = null\n this.refEvent = null\n this.receivedResp = null\n this.sent = false\n }\n\n /**\n * @private\n */\n matchReceive({status, response, _ref}){\n this.recHooks.filter(h => h.status === status)\n .forEach(h => h.callback(response))\n }\n\n /**\n * @private\n */\n cancelRefEvent(){\n if(!this.refEvent){ return }\n this.channel.off(this.refEvent)\n }\n\n /**\n * @private\n */\n cancelTimeout(){\n clearTimeout(this.timeoutTimer)\n this.timeoutTimer = null\n }\n\n /**\n * @private\n */\n startTimeout(){\n if(this.timeoutTimer){ this.cancelTimeout() }\n this.ref = this.channel.socket.makeRef()\n this.refEvent = this.channel.replyEventName(this.ref)\n\n this.channel.on(this.refEvent, payload => {\n this.cancelRefEvent()\n this.cancelTimeout()\n this.receivedResp = payload\n this.matchReceive(payload)\n })\n\n this.timeoutTimer = setTimeout(() => {\n this.trigger(\"timeout\", {})\n }, this.timeout)\n }\n\n /**\n * @private\n */\n hasReceived(status){\n return this.receivedResp && this.receivedResp.status === status\n }\n\n /**\n * @private\n */\n trigger(status, response){\n this.channel.trigger(this.refEvent, {status, response})\n }\n}\n", "/**\n *\n * Creates a timer that accepts a `timerCalc` function to perform\n * calculated timeout retries, such as exponential backoff.\n *\n * @example\n * let reconnectTimer = new Timer(() => this.connect(), function(tries){\n * return [1000, 5000, 10000][tries - 1] || 10000\n * })\n * reconnectTimer.scheduleTimeout() // fires after 1000\n * reconnectTimer.scheduleTimeout() // fires after 5000\n * reconnectTimer.reset()\n * reconnectTimer.scheduleTimeout() // fires after 1000\n *\n * @param {Function} callback\n * @param {Function} timerCalc\n */\nexport default class Timer {\n constructor(callback, timerCalc){\n this.callback = callback\n this.timerCalc = timerCalc\n this.timer = null\n this.tries = 0\n }\n\n reset(){\n this.tries = 0\n clearTimeout(this.timer)\n }\n\n /**\n * Cancels any previous scheduleTimeout and schedules callback\n */\n scheduleTimeout(){\n clearTimeout(this.timer)\n\n this.timer = setTimeout(() => {\n this.tries = this.tries + 1\n this.callback()\n }, this.timerCalc(this.tries + 1))\n }\n}\n", "import {closure} from \"./utils\"\nimport {\n CHANNEL_EVENTS,\n CHANNEL_STATES,\n} from \"./constants\"\n\nimport Push from \"./push\"\nimport Timer from \"./timer\"\n\n/**\n *\n * @param {string} topic\n * @param {(Object|function)} params\n * @param {Socket} socket\n */\nexport default class Channel {\n constructor(topic, params, socket){\n this.state = CHANNEL_STATES.closed\n this.topic = topic\n this.params = closure(params || {})\n this.socket = socket\n this.bindings = []\n this.bindingRef = 0\n this.timeout = this.socket.timeout\n this.joinedOnce = false\n this.joinPush = new Push(this, CHANNEL_EVENTS.join, this.params, this.timeout)\n this.pushBuffer = []\n this.stateChangeRefs = []\n\n this.rejoinTimer = new Timer(() => {\n if(this.socket.isConnected()){ this.rejoin() }\n }, this.socket.rejoinAfterMs)\n this.stateChangeRefs.push(this.socket.onError(() => this.rejoinTimer.reset()))\n this.stateChangeRefs.push(this.socket.onOpen(() => {\n this.rejoinTimer.reset()\n if(this.isErrored()){ this.rejoin() }\n })\n )\n this.joinPush.receive(\"ok\", () => {\n this.state = CHANNEL_STATES.joined\n this.rejoinTimer.reset()\n this.pushBuffer.forEach(pushEvent => pushEvent.send())\n this.pushBuffer = []\n })\n this.joinPush.receive(\"error\", () => {\n this.state = CHANNEL_STATES.errored\n if(this.socket.isConnected()){ this.rejoinTimer.scheduleTimeout() }\n })\n this.onClose(() => {\n this.rejoinTimer.reset()\n if(this.socket.hasLogger()) this.socket.log(\"channel\", `close ${this.topic} ${this.joinRef()}`)\n this.state = CHANNEL_STATES.closed\n this.socket.remove(this)\n })\n this.onError(reason => {\n if(this.socket.hasLogger()) this.socket.log(\"channel\", `error ${this.topic}`, reason)\n if(this.isJoining()){ this.joinPush.reset() }\n this.state = CHANNEL_STATES.errored\n if(this.socket.isConnected()){ this.rejoinTimer.scheduleTimeout() }\n })\n this.joinPush.receive(\"timeout\", () => {\n if(this.socket.hasLogger()) this.socket.log(\"channel\", `timeout ${this.topic} (${this.joinRef()})`, this.joinPush.timeout)\n let leavePush = new Push(this, CHANNEL_EVENTS.leave, closure({}), this.timeout)\n leavePush.send()\n this.state = CHANNEL_STATES.errored\n this.joinPush.reset()\n if(this.socket.isConnected()){ this.rejoinTimer.scheduleTimeout() }\n })\n this.on(CHANNEL_EVENTS.reply, (payload, ref) => {\n this.trigger(this.replyEventName(ref), payload)\n })\n }\n\n /**\n * Join the channel\n * @param {integer} timeout\n * @returns {Push}\n */\n join(timeout = this.timeout){\n if(this.joinedOnce){\n throw new Error(\"tried to join multiple times. 'join' can only be called a single time per channel instance\")\n } else {\n this.timeout = timeout\n this.joinedOnce = true\n this.rejoin()\n return this.joinPush\n }\n }\n\n /**\n * Hook into channel close\n * @param {Function} callback\n */\n onClose(callback){\n this.on(CHANNEL_EVENTS.close, callback)\n }\n\n /**\n * Hook into channel errors\n * @param {Function} callback\n */\n onError(callback){\n return this.on(CHANNEL_EVENTS.error, reason => callback(reason))\n }\n\n /**\n * Subscribes on channel events\n *\n * Subscription returns a ref counter, which can be used later to\n * unsubscribe the exact event listener\n *\n * @example\n * const ref1 = channel.on(\"event\", do_stuff)\n * const ref2 = channel.on(\"event\", do_other_stuff)\n * channel.off(\"event\", ref1)\n * // Since unsubscription, do_stuff won't fire,\n * // while do_other_stuff will keep firing on the \"event\"\n *\n * @param {string} event\n * @param {Function} callback\n * @returns {integer} ref\n */\n on(event, callback){\n let ref = this.bindingRef++\n this.bindings.push({event, ref, callback})\n return ref\n }\n\n /**\n * Unsubscribes off of channel events\n *\n * Use the ref returned from a channel.on() to unsubscribe one\n * handler, or pass nothing for the ref to unsubscribe all\n * handlers for the given event.\n *\n * @example\n * // Unsubscribe the do_stuff handler\n * const ref1 = channel.on(\"event\", do_stuff)\n * channel.off(\"event\", ref1)\n *\n * // Unsubscribe all handlers from event\n * channel.off(\"event\")\n *\n * @param {string} event\n * @param {integer} ref\n */\n off(event, ref){\n this.bindings = this.bindings.filter((bind) => {\n return !(bind.event === event && (typeof ref === \"undefined\" || ref === bind.ref))\n })\n }\n\n /**\n * @private\n */\n canPush(){ return this.socket.isConnected() && this.isJoined() }\n\n /**\n * Sends a message `event` to phoenix with the payload `payload`.\n * Phoenix receives this in the `handle_in(event, payload, socket)`\n * function. if phoenix replies or it times out (default 10000ms),\n * then optionally the reply can be received.\n *\n * @example\n * channel.push(\"event\")\n * .receive(\"ok\", payload => console.log(\"phoenix replied:\", payload))\n * .receive(\"error\", err => console.log(\"phoenix errored\", err))\n * .receive(\"timeout\", () => console.log(\"timed out pushing\"))\n * @param {string} event\n * @param {Object} payload\n * @param {number} [timeout]\n * @returns {Push}\n */\n push(event, payload, timeout = this.timeout){\n payload = payload || {}\n if(!this.joinedOnce){\n throw new Error(`tried to push '${event}' to '${this.topic}' before joining. Use channel.join() before pushing events`)\n }\n let pushEvent = new Push(this, event, function (){ return payload }, timeout)\n if(this.canPush()){\n pushEvent.send()\n } else {\n pushEvent.startTimeout()\n this.pushBuffer.push(pushEvent)\n }\n\n return pushEvent\n }\n\n /** Leaves the channel\n *\n * Unsubscribes from server events, and\n * instructs channel to terminate on server\n *\n * Triggers onClose() hooks\n *\n * To receive leave acknowledgements, use the `receive`\n * hook to bind to the server ack, ie:\n *\n * @example\n * channel.leave().receive(\"ok\", () => alert(\"left!\") )\n *\n * @param {integer} timeout\n * @returns {Push}\n */\n leave(timeout = this.timeout){\n this.rejoinTimer.reset()\n this.joinPush.cancelTimeout()\n\n this.state = CHANNEL_STATES.leaving\n let onClose = () => {\n if(this.socket.hasLogger()) this.socket.log(\"channel\", `leave ${this.topic}`)\n this.trigger(CHANNEL_EVENTS.close, \"leave\")\n }\n let leavePush = new Push(this, CHANNEL_EVENTS.leave, closure({}), timeout)\n leavePush.receive(\"ok\", () => onClose())\n .receive(\"timeout\", () => onClose())\n leavePush.send()\n if(!this.canPush()){ leavePush.trigger(\"ok\", {}) }\n\n return leavePush\n }\n\n /**\n * Overridable message hook\n *\n * Receives all events for specialized message handling\n * before dispatching to the channel callbacks.\n *\n * Must return the payload, modified or unmodified\n * @param {string} event\n * @param {Object} payload\n * @param {integer} ref\n * @returns {Object}\n */\n onMessage(_event, payload, _ref){ return payload }\n\n /**\n * @private\n */\n isMember(topic, event, payload, joinRef){\n if(this.topic !== topic){ return false }\n\n if(joinRef && joinRef !== this.joinRef()){\n if(this.socket.hasLogger()) this.socket.log(\"channel\", \"dropping outdated message\", {topic, event, payload, joinRef})\n return false\n } else {\n return true\n }\n }\n\n /**\n * @private\n */\n joinRef(){ return this.joinPush.ref }\n\n /**\n * @private\n */\n rejoin(timeout = this.timeout){\n if(this.isLeaving()){ return }\n this.socket.leaveOpenTopic(this.topic)\n this.state = CHANNEL_STATES.joining\n this.joinPush.resend(timeout)\n }\n\n /**\n * @private\n */\n trigger(event, payload, ref, joinRef){\n let handledPayload = this.onMessage(event, payload, ref, joinRef)\n if(payload && !handledPayload){ throw new Error(\"channel onMessage callbacks must return the payload, modified or unmodified\") }\n\n let eventBindings = this.bindings.filter(bind => bind.event === event)\n\n for(let i = 0; i < eventBindings.length; i++){\n let bind = eventBindings[i]\n bind.callback(handledPayload, ref, joinRef || this.joinRef())\n }\n }\n\n /**\n * @private\n */\n replyEventName(ref){ return `chan_reply_${ref}` }\n\n /**\n * @private\n */\n isClosed(){ return this.state === CHANNEL_STATES.closed }\n\n /**\n * @private\n */\n isErrored(){ return this.state === CHANNEL_STATES.errored }\n\n /**\n * @private\n */\n isJoined(){ return this.state === CHANNEL_STATES.joined }\n\n /**\n * @private\n */\n isJoining(){ return this.state === CHANNEL_STATES.joining }\n\n /**\n * @private\n */\n isLeaving(){ return this.state === CHANNEL_STATES.leaving }\n}\n", "import {\n global,\n XHR_STATES\n} from \"./constants\"\n\nexport default class Ajax {\n\n static request(method, endPoint, accept, body, timeout, ontimeout, callback){\n if(global.XDomainRequest){\n let req = new global.XDomainRequest() // IE8, IE9\n this.xdomainRequest(req, method, endPoint, body, timeout, ontimeout, callback)\n } else {\n let req = new global.XMLHttpRequest() // IE7+, Firefox, Chrome, Opera, Safari\n this.xhrRequest(req, method, endPoint, accept, body, timeout, ontimeout, callback)\n }\n }\n\n static xdomainRequest(req, method, endPoint, body, timeout, ontimeout, callback){\n req.timeout = timeout\n req.open(method, endPoint)\n req.onload = () => {\n let response = this.parseJSON(req.responseText)\n callback && callback(response)\n }\n if(ontimeout){ req.ontimeout = ontimeout }\n\n // Work around bug in IE9 that requires an attached onprogress handler\n req.onprogress = () => { }\n\n req.send(body)\n }\n\n static xhrRequest(req, method, endPoint, accept, body, timeout, ontimeout, callback){\n req.open(method, endPoint, true)\n req.timeout = timeout\n req.setRequestHeader(\"Content-Type\", accept)\n req.onerror = () => { callback && callback(null) }\n req.onreadystatechange = () => {\n if(req.readyState === XHR_STATES.complete && callback){\n let response = this.parseJSON(req.responseText)\n callback(response)\n }\n }\n if(ontimeout){ req.ontimeout = ontimeout }\n\n req.send(body)\n }\n\n static parseJSON(resp){\n if(!resp || resp === \"\"){ return null }\n\n try {\n return JSON.parse(resp)\n } catch (e){\n console && console.log(\"failed to parse JSON response\", resp)\n return null\n }\n }\n\n static serialize(obj, parentKey){\n let queryStr = []\n for(var key in obj){\n if(!Object.prototype.hasOwnProperty.call(obj, key)){ continue }\n let paramKey = parentKey ? `${parentKey}[${key}]` : key\n let paramVal = obj[key]\n if(typeof paramVal === \"object\"){\n queryStr.push(this.serialize(paramVal, paramKey))\n } else {\n queryStr.push(encodeURIComponent(paramKey) + \"=\" + encodeURIComponent(paramVal))\n }\n }\n return queryStr.join(\"&\")\n }\n\n static appendParams(url, params){\n if(Object.keys(params).length === 0){ return url }\n\n let prefix = url.match(/\\?/) ? \"&\" : \"?\"\n return `${url}${prefix}${this.serialize(params)}`\n }\n}\n", "import {\n SOCKET_STATES,\n TRANSPORTS\n} from \"./constants\"\n\nimport Ajax from \"./ajax\"\n\nexport default class LongPoll {\n\n constructor(endPoint){\n this.endPoint = null\n this.token = null\n this.skipHeartbeat = true\n this.onopen = function (){ } // noop\n this.onerror = function (){ } // noop\n this.onmessage = function (){ } // noop\n this.onclose = function (){ } // noop\n this.pollEndpoint = this.normalizeEndpoint(endPoint)\n this.readyState = SOCKET_STATES.connecting\n this.poll()\n }\n\n normalizeEndpoint(endPoint){\n return (endPoint\n .replace(\"ws://\", \"http://\")\n .replace(\"wss://\", \"https://\")\n .replace(new RegExp(\"(.*)\\/\" + TRANSPORTS.websocket), \"$1/\" + TRANSPORTS.longpoll))\n }\n\n endpointURL(){\n return Ajax.appendParams(this.pollEndpoint, {token: this.token})\n }\n\n closeAndRetry(code, reason, wasClean){\n this.close(code, reason, wasClean)\n this.readyState = SOCKET_STATES.connecting\n }\n\n ontimeout(){\n this.onerror(\"timeout\")\n this.closeAndRetry(1005, \"timeout\", false)\n }\n\n poll(){\n if(!(this.readyState === SOCKET_STATES.open || this.readyState === SOCKET_STATES.connecting)){ return }\n\n Ajax.request(\"GET\", this.endpointURL(), \"application/json\", null, this.timeout, this.ontimeout.bind(this), (resp) => {\n if(resp){\n var {status, token, messages} = resp\n this.token = token\n } else {\n status = 0\n }\n\n switch(status){\n case 200:\n messages.forEach(msg => {\n // Tasks are what things like event handlers, setTimeout callbacks,\n // promise resolves and more are run within.\n // In modern browsers, there are two different kinds of tasks,\n // microtasks and macrotasks.\n // Microtasks are mainly used for Promises, while macrotasks are\n // used for everything else.\n // Microtasks always have priority over macrotasks. If the JS engine\n // is looking for a task to run, it will always try to empty the\n // microtask queue before attempting to run anything from the\n // macrotask queue.\n //\n // For the WebSocket transport, messages always arrive in their own\n // event. This means that if any promises are resolved from within,\n // their callbacks will always finish execution by the time the\n // next message event handler is run.\n //\n // In order to emulate this behaviour, we need to make sure each\n // onmessage handler is run within it's own macrotask.\n setTimeout(() => {\n this.onmessage({data: msg})\n }, 0)\n })\n this.poll()\n break\n case 204:\n this.poll()\n break\n case 410:\n this.readyState = SOCKET_STATES.open\n this.onopen({})\n this.poll()\n break\n case 403:\n this.onerror(403)\n this.close(1008, \"forbidden\", false)\n break\n case 0:\n case 500:\n this.onerror(500)\n this.closeAndRetry(1011, \"internal server error\", 500)\n break\n default: throw new Error(`unhandled poll status ${status}`)\n }\n })\n }\n\n send(body){\n Ajax.request(\"POST\", this.endpointURL(), \"application/json\", body, this.timeout, this.onerror.bind(this, \"timeout\"), (resp) => {\n if(!resp || resp.status !== 200){\n this.onerror(resp && resp.status)\n this.closeAndRetry(1011, \"internal server error\", false)\n }\n })\n }\n\n close(code, reason, wasClean){\n this.readyState = SOCKET_STATES.closed\n let opts = Object.assign({code: 1000, reason: undefined, wasClean: true}, {code, reason, wasClean})\n if(typeof(CloseEvent) !== \"undefined\"){\n this.onclose(new CloseEvent(\"close\", opts))\n } else {\n this.onclose(opts)\n }\n }\n}\n", "/**\n * Initializes the Presence\n * @param {Channel} channel - The Channel\n * @param {Object} opts - The options,\n * for example `{events: {state: \"state\", diff: \"diff\"}}`\n */\nexport default class Presence {\n\n constructor(channel, opts = {}){\n let events = opts.events || {state: \"presence_state\", diff: \"presence_diff\"}\n this.state = {}\n this.pendingDiffs = []\n this.channel = channel\n this.joinRef = null\n this.caller = {\n onJoin: function (){ },\n onLeave: function (){ },\n onSync: function (){ }\n }\n\n this.channel.on(events.state, newState => {\n let {onJoin, onLeave, onSync} = this.caller\n\n this.joinRef = this.channel.joinRef()\n this.state = Presence.syncState(this.state, newState, onJoin, onLeave)\n\n this.pendingDiffs.forEach(diff => {\n this.state = Presence.syncDiff(this.state, diff, onJoin, onLeave)\n })\n this.pendingDiffs = []\n onSync()\n })\n\n this.channel.on(events.diff, diff => {\n let {onJoin, onLeave, onSync} = this.caller\n\n if(this.inPendingSyncState()){\n this.pendingDiffs.push(diff)\n } else {\n this.state = Presence.syncDiff(this.state, diff, onJoin, onLeave)\n onSync()\n }\n })\n }\n\n onJoin(callback){ this.caller.onJoin = callback }\n\n onLeave(callback){ this.caller.onLeave = callback }\n\n onSync(callback){ this.caller.onSync = callback }\n\n list(by){ return Presence.list(this.state, by) }\n\n inPendingSyncState(){\n return !this.joinRef || (this.joinRef !== this.channel.joinRef())\n }\n\n // lower-level public static API\n\n /**\n * Used to sync the list of presences on the server\n * with the client's state. An optional `onJoin` and `onLeave` callback can\n * be provided to react to changes in the client's local presences across\n * disconnects and reconnects with the server.\n *\n * @returns {Presence}\n */\n static syncState(currentState, newState, onJoin, onLeave){\n let state = this.clone(currentState)\n let joins = {}\n let leaves = {}\n\n this.map(state, (key, presence) => {\n if(!newState[key]){\n leaves[key] = presence\n }\n })\n this.map(newState, (key, newPresence) => {\n let currentPresence = state[key]\n if(currentPresence){\n let newRefs = newPresence.metas.map(m => m.phx_ref)\n let curRefs = currentPresence.metas.map(m => m.phx_ref)\n let joinedMetas = newPresence.metas.filter(m => curRefs.indexOf(m.phx_ref) < 0)\n let leftMetas = currentPresence.metas.filter(m => newRefs.indexOf(m.phx_ref) < 0)\n if(joinedMetas.length > 0){\n joins[key] = newPresence\n joins[key].metas = joinedMetas\n }\n if(leftMetas.length > 0){\n leaves[key] = this.clone(currentPresence)\n leaves[key].metas = leftMetas\n }\n } else {\n joins[key] = newPresence\n }\n })\n return this.syncDiff(state, {joins: joins, leaves: leaves}, onJoin, onLeave)\n }\n\n /**\n *\n * Used to sync a diff of presence join and leave\n * events from the server, as they happen. Like `syncState`, `syncDiff`\n * accepts optional `onJoin` and `onLeave` callbacks to react to a user\n * joining or leaving from a device.\n *\n * @returns {Presence}\n */\n static syncDiff(state, diff, onJoin, onLeave){\n let {joins, leaves} = this.clone(diff)\n if(!onJoin){ onJoin = function (){ } }\n if(!onLeave){ onLeave = function (){ } }\n\n this.map(joins, (key, newPresence) => {\n let currentPresence = state[key]\n state[key] = this.clone(newPresence)\n if(currentPresence){\n let joinedRefs = state[key].metas.map(m => m.phx_ref)\n let curMetas = currentPresence.metas.filter(m => joinedRefs.indexOf(m.phx_ref) < 0)\n state[key].metas.unshift(...curMetas)\n }\n onJoin(key, currentPresence, newPresence)\n })\n this.map(leaves, (key, leftPresence) => {\n let currentPresence = state[key]\n if(!currentPresence){ return }\n let refsToRemove = leftPresence.metas.map(m => m.phx_ref)\n currentPresence.metas = currentPresence.metas.filter(p => {\n return refsToRemove.indexOf(p.phx_ref) < 0\n })\n onLeave(key, currentPresence, leftPresence)\n if(currentPresence.metas.length === 0){\n delete state[key]\n }\n })\n return state\n }\n\n /**\n * Returns the array of presences, with selected metadata.\n *\n * @param {Object} presences\n * @param {Function} chooser\n *\n * @returns {Presence}\n */\n static list(presences, chooser){\n if(!chooser){ chooser = function (key, pres){ return pres } }\n\n return this.map(presences, (key, presence) => {\n return chooser(key, presence)\n })\n }\n\n // private\n\n static map(obj, func){\n return Object.getOwnPropertyNames(obj).map(key => func(key, obj[key]))\n }\n\n static clone(obj){ return JSON.parse(JSON.stringify(obj)) }\n}\n", "/* The default serializer for encoding and decoding messages */\nimport {\n CHANNEL_EVENTS\n} from \"./constants\"\n\nexport default {\n HEADER_LENGTH: 1,\n META_LENGTH: 4,\n KINDS: {push: 0, reply: 1, broadcast: 2},\n\n encode(msg, callback){\n if(msg.payload.constructor === ArrayBuffer){\n return callback(this.binaryEncode(msg))\n } else {\n let payload = [msg.join_ref, msg.ref, msg.topic, msg.event, msg.payload]\n return callback(JSON.stringify(payload))\n }\n },\n\n decode(rawPayload, callback){\n if(rawPayload.constructor === ArrayBuffer){\n return callback(this.binaryDecode(rawPayload))\n } else {\n let [join_ref, ref, topic, event, payload] = JSON.parse(rawPayload)\n return callback({join_ref, ref, topic, event, payload})\n }\n },\n\n // private\n\n binaryEncode(message){\n let {join_ref, ref, event, topic, payload} = message\n let metaLength = this.META_LENGTH + join_ref.length + ref.length + topic.length + event.length\n let header = new ArrayBuffer(this.HEADER_LENGTH + metaLength)\n let view = new DataView(header)\n let offset = 0\n\n view.setUint8(offset++, this.KINDS.push) // kind\n view.setUint8(offset++, join_ref.length)\n view.setUint8(offset++, ref.length)\n view.setUint8(offset++, topic.length)\n view.setUint8(offset++, event.length)\n Array.from(join_ref, char => view.setUint8(offset++, char.charCodeAt(0)))\n Array.from(ref, char => view.setUint8(offset++, char.charCodeAt(0)))\n Array.from(topic, char => view.setUint8(offset++, char.charCodeAt(0)))\n Array.from(event, char => view.setUint8(offset++, char.charCodeAt(0)))\n\n var combined = new Uint8Array(header.byteLength + payload.byteLength)\n combined.set(new Uint8Array(header), 0)\n combined.set(new Uint8Array(payload), header.byteLength)\n\n return combined.buffer\n },\n\n binaryDecode(buffer){\n let view = new DataView(buffer)\n let kind = view.getUint8(0)\n let decoder = new TextDecoder()\n switch(kind){\n case this.KINDS.push: return this.decodePush(buffer, view, decoder)\n case this.KINDS.reply: return this.decodeReply(buffer, view, decoder)\n case this.KINDS.broadcast: return this.decodeBroadcast(buffer, view, decoder)\n }\n },\n\n decodePush(buffer, view, decoder){\n let joinRefSize = view.getUint8(1)\n let topicSize = view.getUint8(2)\n let eventSize = view.getUint8(3)\n let offset = this.HEADER_LENGTH + this.META_LENGTH - 1 // pushes have no ref\n let joinRef = decoder.decode(buffer.slice(offset, offset + joinRefSize))\n offset = offset + joinRefSize\n let topic = decoder.decode(buffer.slice(offset, offset + topicSize))\n offset = offset + topicSize\n let event = decoder.decode(buffer.slice(offset, offset + eventSize))\n offset = offset + eventSize\n let data = buffer.slice(offset, buffer.byteLength)\n return {join_ref: joinRef, ref: null, topic: topic, event: event, payload: data}\n },\n\n decodeReply(buffer, view, decoder){\n let joinRefSize = view.getUint8(1)\n let refSize = view.getUint8(2)\n let topicSize = view.getUint8(3)\n let eventSize = view.getUint8(4)\n let offset = this.HEADER_LENGTH + this.META_LENGTH\n let joinRef = decoder.decode(buffer.slice(offset, offset + joinRefSize))\n offset = offset + joinRefSize\n let ref = decoder.decode(buffer.slice(offset, offset + refSize))\n offset = offset + refSize\n let topic = decoder.decode(buffer.slice(offset, offset + topicSize))\n offset = offset + topicSize\n let event = decoder.decode(buffer.slice(offset, offset + eventSize))\n offset = offset + eventSize\n let data = buffer.slice(offset, buffer.byteLength)\n let payload = {status: event, response: data}\n return {join_ref: joinRef, ref: ref, topic: topic, event: CHANNEL_EVENTS.reply, payload: payload}\n },\n\n decodeBroadcast(buffer, view, decoder){\n let topicSize = view.getUint8(1)\n let eventSize = view.getUint8(2)\n let offset = this.HEADER_LENGTH + 2\n let topic = decoder.decode(buffer.slice(offset, offset + topicSize))\n offset = offset + topicSize\n let event = decoder.decode(buffer.slice(offset, offset + eventSize))\n offset = offset + eventSize\n let data = buffer.slice(offset, buffer.byteLength)\n\n return {join_ref: null, ref: null, topic: topic, event: event, payload: data}\n }\n}\n", "import {\n global,\n phxWindow,\n CHANNEL_EVENTS,\n DEFAULT_TIMEOUT,\n DEFAULT_VSN,\n SOCKET_STATES,\n TRANSPORTS,\n WS_CLOSE_NORMAL\n} from \"./constants\"\n\nimport {\n closure\n} from \"./utils\"\n\nimport Ajax from \"./ajax\"\nimport Channel from \"./channel\"\nimport LongPoll from \"./longpoll\"\nimport Serializer from \"./serializer\"\nimport Timer from \"./timer\"\n\n/** Initializes the Socket *\n *\n * For IE8 support use an ES5-shim (https://github.com/es-shims/es5-shim)\n *\n * @param {string} endPoint - The string WebSocket endpoint, ie, `\"ws://example.com/socket\"`,\n * `\"wss://example.com\"`\n * `\"/socket\"` (inherited host & protocol)\n * @param {Object} [opts] - Optional configuration\n * @param {Function} [opts.transport] - The Websocket Transport, for example WebSocket or Phoenix.LongPoll.\n *\n * Defaults to WebSocket with automatic LongPoll fallback.\n * @param {Function} [opts.encode] - The function to encode outgoing messages.\n *\n * Defaults to JSON encoder.\n *\n * @param {Function} [opts.decode] - The function to decode incoming messages.\n *\n * Defaults to JSON:\n *\n * ```javascript\n * (payload, callback) => callback(JSON.parse(payload))\n * ```\n *\n * @param {number} [opts.timeout] - The default timeout in milliseconds to trigger push timeouts.\n *\n * Defaults `DEFAULT_TIMEOUT`\n * @param {number} [opts.heartbeatIntervalMs] - The millisec interval to send a heartbeat message\n * @param {number} [opts.reconnectAfterMs] - The optional function that returns the millsec\n * socket reconnect interval.\n *\n * Defaults to stepped backoff of:\n *\n * ```javascript\n * function(tries){\n * return [10, 50, 100, 150, 200, 250, 500, 1000, 2000][tries - 1] || 5000\n * }\n * ````\n *\n * @param {number} [opts.rejoinAfterMs] - The optional function that returns the millsec\n * rejoin interval for individual channels.\n *\n * ```javascript\n * function(tries){\n * return [1000, 2000, 5000][tries - 1] || 10000\n * }\n * ````\n *\n * @param {Function} [opts.logger] - The optional function for specialized logging, ie:\n *\n * ```javascript\n * function(kind, msg, data) {\n * console.log(`${kind}: ${msg}`, data)\n * }\n * ```\n *\n * @param {number} [opts.longpollerTimeout] - The maximum timeout of a long poll AJAX request.\n *\n * Defaults to 20s (double the server long poll timer).\n *\n * @param {(Object|function)} [opts.params] - The optional params to pass when connecting\n * @param {string} [opts.binaryType] - The binary type to use for binary WebSocket frames.\n *\n * Defaults to \"arraybuffer\"\n *\n * @param {vsn} [opts.vsn] - The serializer's protocol version to send on connect.\n *\n * Defaults to DEFAULT_VSN.\n*/\nexport default class Socket {\n constructor(endPoint, opts = {}){\n this.stateChangeCallbacks = {open: [], close: [], error: [], message: []}\n this.channels = []\n this.sendBuffer = []\n this.ref = 0\n this.timeout = opts.timeout || DEFAULT_TIMEOUT\n this.transport = opts.transport || global.WebSocket || LongPoll\n this.establishedConnections = 0\n this.defaultEncoder = Serializer.encode.bind(Serializer)\n this.defaultDecoder = Serializer.decode.bind(Serializer)\n this.closeWasClean = false\n this.binaryType = opts.binaryType || \"arraybuffer\"\n this.connectClock = 1\n if(this.transport !== LongPoll){\n this.encode = opts.encode || this.defaultEncoder\n this.decode = opts.decode || this.defaultDecoder\n } else {\n this.encode = this.defaultEncoder\n this.decode = this.defaultDecoder\n }\n let awaitingConnectionOnPageShow = null\n if(phxWindow && phxWindow.addEventListener){\n phxWindow.addEventListener(\"pagehide\", _e => {\n if(this.conn){\n this.disconnect()\n awaitingConnectionOnPageShow = this.connectClock\n }\n })\n phxWindow.addEventListener(\"pageshow\", _e => {\n if(awaitingConnectionOnPageShow === this.connectClock){\n awaitingConnectionOnPageShow = null\n this.connect()\n }\n })\n }\n this.heartbeatIntervalMs = opts.heartbeatIntervalMs || 30000\n this.rejoinAfterMs = (tries) => {\n if(opts.rejoinAfterMs){\n return opts.rejoinAfterMs(tries)\n } else {\n return [1000, 2000, 5000][tries - 1] || 10000\n }\n }\n this.reconnectAfterMs = (tries) => {\n if(opts.reconnectAfterMs){\n return opts.reconnectAfterMs(tries)\n } else {\n return [10, 50, 100, 150, 200, 250, 500, 1000, 2000][tries - 1] || 5000\n }\n }\n this.logger = opts.logger || null\n this.longpollerTimeout = opts.longpollerTimeout || 20000\n this.params = closure(opts.params || {})\n this.endPoint = `${endPoint}/${TRANSPORTS.websocket}`\n this.vsn = opts.vsn || DEFAULT_VSN\n this.heartbeatTimer = null\n this.pendingHeartbeatRef = null\n this.reconnectTimer = new Timer(() => {\n this.teardown(() => this.connect())\n }, this.reconnectAfterMs)\n }\n\n /**\n * Disconnects and replaces the active transport\n *\n * @param {Function} newTransport - The new transport class to instantiate\n *\n */\n replaceTransport(newTransport){\n this.connectClock++\n this.closeWasClean = true\n this.reconnectTimer.reset()\n if(this.conn){\n this.conn.close()\n this.conn = null\n }\n this.transport = newTransport\n }\n\n /**\n * Returns the socket protocol\n *\n * @returns {string}\n */\n protocol(){ return location.protocol.match(/^https/) ? \"wss\" : \"ws\" }\n\n /**\n * The fully qualifed socket url\n *\n * @returns {string}\n */\n endPointURL(){\n let uri = Ajax.appendParams(\n Ajax.appendParams(this.endPoint, this.params()), {vsn: this.vsn})\n if(uri.charAt(0) !== \"/\"){ return uri }\n if(uri.charAt(1) === \"/\"){ return `${this.protocol()}:${uri}` }\n\n return `${this.protocol()}://${location.host}${uri}`\n }\n\n /**\n * Disconnects the socket\n *\n * See https://developer.mozilla.org/en-US/docs/Web/API/CloseEvent#Status_codes for valid status codes.\n *\n * @param {Function} callback - Optional callback which is called after socket is disconnected.\n * @param {integer} code - A status code for disconnection (Optional).\n * @param {string} reason - A textual description of the reason to disconnect. (Optional)\n */\n disconnect(callback, code, reason){\n this.connectClock++\n this.closeWasClean = true\n this.reconnectTimer.reset()\n this.teardown(callback, code, reason)\n }\n\n /**\n *\n * @param {Object} params - The params to send when connecting, for example `{user_id: userToken}`\n *\n * Passing params to connect is deprecated; pass them in the Socket constructor instead:\n * `new Socket(\"/socket\", {params: {user_id: userToken}})`.\n */\n connect(params){\n this.connectClock++\n if(params){\n console && console.log(\"passing params to connect is deprecated. Instead pass :params to the Socket constructor\")\n this.params = closure(params)\n }\n if(this.conn){ return }\n this.closeWasClean = false\n this.conn = new this.transport(this.endPointURL())\n this.conn.binaryType = this.binaryType\n this.conn.timeout = this.longpollerTimeout\n this.conn.onopen = () => this.onConnOpen()\n this.conn.onerror = error => this.onConnError(error)\n this.conn.onmessage = event => this.onConnMessage(event)\n this.conn.onclose = event => this.onConnClose(event)\n }\n\n /**\n * Logs the message. Override `this.logger` for specialized logging. noops by default\n * @param {string} kind\n * @param {string} msg\n * @param {Object} data\n */\n log(kind, msg, data){ this.logger(kind, msg, data) }\n\n /**\n * Returns true if a logger has been set on this socket.\n */\n hasLogger(){ return this.logger !== null }\n\n /**\n * Registers callbacks for connection open events\n *\n * @example socket.onOpen(function(){ console.info(\"the socket was opened\") })\n *\n * @param {Function} callback\n */\n onOpen(callback){\n let ref = this.makeRef()\n this.stateChangeCallbacks.open.push([ref, callback])\n return ref\n }\n\n /**\n * Registers callbacks for connection close events\n * @param {Function} callback\n */\n onClose(callback){\n let ref = this.makeRef()\n this.stateChangeCallbacks.close.push([ref, callback])\n return ref\n }\n\n /**\n * Registers callbacks for connection error events\n *\n * @example socket.onError(function(error){ alert(\"An error occurred\") })\n *\n * @param {Function} callback\n */\n onError(callback){\n let ref = this.makeRef()\n this.stateChangeCallbacks.error.push([ref, callback])\n return ref\n }\n\n /**\n * Registers callbacks for connection message events\n * @param {Function} callback\n */\n onMessage(callback){\n let ref = this.makeRef()\n this.stateChangeCallbacks.message.push([ref, callback])\n return ref\n }\n\n /**\n * Pings the server and invokes the callback with the RTT in milliseconds\n * @param {Function} callback\n *\n * Returns true if the ping was pushed or false if unable to be pushed.\n */\n ping(callback){\n if(!this.isConnected()){ return false }\n let ref = this.makeRef()\n let startTime = Date.now()\n this.push({topic: \"phoenix\", event: \"heartbeat\", payload: {}, ref: ref})\n let onMsgRef = this.onMessage(msg => {\n if(msg.ref === ref){\n this.off([onMsgRef])\n callback(Date.now() - startTime)\n }\n })\n return true\n }\n\n /**\n * @private\n */\n onConnOpen(){\n if(this.hasLogger()) this.log(\"transport\", `connected to ${this.endPointURL()}`)\n this.closeWasClean = false\n this.establishedConnections++\n this.flushSendBuffer()\n this.reconnectTimer.reset()\n this.resetHeartbeat()\n this.stateChangeCallbacks.open.forEach(([, callback]) => callback())\n }\n\n /**\n * @private\n */\n\n heartbeatTimeout(){\n if(this.pendingHeartbeatRef){\n this.pendingHeartbeatRef = null\n if(this.hasLogger()){ this.log(\"transport\", \"heartbeat timeout. Attempting to re-establish connection\") }\n this.abnormalClose(\"heartbeat timeout\")\n }\n }\n\n resetHeartbeat(){\n if(this.conn && this.conn.skipHeartbeat){ return }\n this.pendingHeartbeatRef = null\n clearTimeout(this.heartbeatTimer)\n setTimeout(() => this.sendHeartbeat(), this.heartbeatIntervalMs)\n }\n\n teardown(callback, code, reason){\n if(!this.conn){\n return callback && callback()\n }\n\n this.waitForBufferDone(() => {\n if(this.conn){\n if(code){ this.conn.close(code, reason || \"\") } else { this.conn.close() }\n }\n\n this.waitForSocketClosed(() => {\n if(this.conn){\n this.conn.onclose = function (){ } // noop\n this.conn = null\n }\n\n callback && callback()\n })\n })\n }\n\n waitForBufferDone(callback, tries = 1){\n if(tries === 5 || !this.conn || !this.conn.bufferedAmount){\n callback()\n return\n }\n\n setTimeout(() => {\n this.waitForBufferDone(callback, tries + 1)\n }, 150 * tries)\n }\n\n waitForSocketClosed(callback, tries = 1){\n if(tries === 5 || !this.conn || this.conn.readyState === SOCKET_STATES.closed){\n callback()\n return\n }\n\n setTimeout(() => {\n this.waitForSocketClosed(callback, tries + 1)\n }, 150 * tries)\n }\n\n onConnClose(event){\n let closeCode = event && event.code\n if(this.hasLogger()) this.log(\"transport\", \"close\", event)\n this.triggerChanError()\n clearTimeout(this.heartbeatTimer)\n if(!this.closeWasClean && closeCode !== 1000){\n this.reconnectTimer.scheduleTimeout()\n }\n this.stateChangeCallbacks.close.forEach(([, callback]) => callback(event))\n }\n\n /**\n * @private\n */\n onConnError(error){\n if(this.hasLogger()) this.log(\"transport\", error)\n let transportBefore = this.transport\n let establishedBefore = this.establishedConnections\n this.stateChangeCallbacks.error.forEach(([, callback]) => {\n callback(error, transportBefore, establishedBefore)\n })\n if(transportBefore === this.transport || establishedBefore > 0){\n this.triggerChanError()\n }\n }\n\n /**\n * @private\n */\n triggerChanError(){\n this.channels.forEach(channel => {\n if(!(channel.isErrored() || channel.isLeaving() || channel.isClosed())){\n channel.trigger(CHANNEL_EVENTS.error)\n }\n })\n }\n\n /**\n * @returns {string}\n */\n connectionState(){\n switch(this.conn && this.conn.readyState){\n case SOCKET_STATES.connecting: return \"connecting\"\n case SOCKET_STATES.open: return \"open\"\n case SOCKET_STATES.closing: return \"closing\"\n default: return \"closed\"\n }\n }\n\n /**\n * @returns {boolean}\n */\n isConnected(){ return this.connectionState() === \"open\" }\n\n /**\n * @private\n *\n * @param {Channel}\n */\n remove(channel){\n this.off(channel.stateChangeRefs)\n this.channels = this.channels.filter(c => c.joinRef() !== channel.joinRef())\n }\n\n /**\n * Removes `onOpen`, `onClose`, `onError,` and `onMessage` registrations.\n *\n * @param {refs} - list of refs returned by calls to\n * `onOpen`, `onClose`, `onError,` and `onMessage`\n */\n off(refs){\n for(let key in this.stateChangeCallbacks){\n this.stateChangeCallbacks[key] = this.stateChangeCallbacks[key].filter(([ref]) => {\n return refs.indexOf(ref) === -1\n })\n }\n }\n\n /**\n * Initiates a new channel for the given topic\n *\n * @param {string} topic\n * @param {Object} chanParams - Parameters for the channel\n * @returns {Channel}\n */\n channel(topic, chanParams = {}){\n let chan = new Channel(topic, chanParams, this)\n this.channels.push(chan)\n return chan\n }\n\n /**\n * @param {Object} data\n */\n push(data){\n if(this.hasLogger()){\n let {topic, event, payload, ref, join_ref} = data\n this.log(\"push\", `${topic} ${event} (${join_ref}, ${ref})`, payload)\n }\n\n if(this.isConnected()){\n this.encode(data, result => this.conn.send(result))\n } else {\n this.sendBuffer.push(() => this.encode(data, result => this.conn.send(result)))\n }\n }\n\n /**\n * Return the next message ref, accounting for overflows\n * @returns {string}\n */\n makeRef(){\n let newRef = this.ref + 1\n if(newRef === this.ref){ this.ref = 0 } else { this.ref = newRef }\n\n return this.ref.toString()\n }\n\n sendHeartbeat(){\n if(this.pendingHeartbeatRef && !this.isConnected()){ return }\n this.pendingHeartbeatRef = this.makeRef()\n this.push({topic: \"phoenix\", event: \"heartbeat\", payload: {}, ref: this.pendingHeartbeatRef})\n this.heartbeatTimer = setTimeout(() => this.heartbeatTimeout(), this.heartbeatIntervalMs)\n }\n\n abnormalClose(reason){\n this.closeWasClean = false\n if(this.isConnected()){ this.conn.close(WS_CLOSE_NORMAL, reason) }\n }\n\n flushSendBuffer(){\n if(this.isConnected() && this.sendBuffer.length > 0){\n this.sendBuffer.forEach(callback => callback())\n this.sendBuffer = []\n }\n }\n\n onConnMessage(rawMessage){\n this.decode(rawMessage.data, msg => {\n let {topic, event, payload, ref, join_ref} = msg\n if(ref && ref === this.pendingHeartbeatRef){\n clearTimeout(this.heartbeatTimer)\n this.pendingHeartbeatRef = null\n setTimeout(() => this.sendHeartbeat(), this.heartbeatIntervalMs)\n }\n\n 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