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Added example applications
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‎Peertalk Example/Icon-1024.psd

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‎Peertalk Example/Icon.icns

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‎Peertalk Example/PTAppDelegate.h

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#import "PTChannel.h"
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static const NSTimeInterval PTAppReconnectDelay = 1.0;
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@interface PTAppDelegate : NSObject <NSApplicationDelegate, PTChannelDelegate>
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@property (assign) IBOutlet NSWindow *window;
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@property (assign) IBOutlet NSTextField *inputTextField;
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@property (assign) IBOutlet NSTextView *outputTextView;
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- (IBAction)sendMessage:(id)sender;
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@end

‎Peertalk Example/PTAppDelegate.m

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#import "PTAppDelegate.h"
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#import "PTUSBHub.h"
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#import "PTExampleProtocol.h"
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#import <QuartzCore/QuartzCore.h>
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@interface PTAppDelegate () {
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// If the remote connection is over USB transport...
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NSNumber *connectingToDeviceID_;
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NSNumber *connectedDeviceID_;
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NSDictionary *connectedDeviceProperties_;
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NSDictionary *remoteDeviceInfo_;
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dispatch_queue_t notConnectedQueue_;
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BOOL notConnectedQueueSuspended_;
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PTChannel *connectedChannel_;
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NSDictionary *consoleTextAttributes_;
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NSDictionary *consoleStatusTextAttributes_;
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}
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@property (readonly) NSNumber *connectedDeviceID;
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@property PTChannel *connectedChannel;
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- (void)presentMessage:(NSString*)message isStatus:(BOOL)isStatus;
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- (void)startListeningForDevices;
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- (void)didDisconnectFromDevice:(NSNumber*)deviceID;
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- (void)disconnectFromCurrentChannel;
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- (void)enqueueConnectToLocalIPv4Port;
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- (void)connectToLocalIPv4Port;
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- (void)connectToUSBDevice;
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@end
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@implementation PTAppDelegate
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@synthesize window = window_;
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@synthesize inputTextField = inputTextField_;
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@synthesize outputTextView = outputTextView_;
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@synthesize connectedDeviceID = connectedDeviceID_;
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- (void)applicationDidFinishLaunching:(NSNotification *)aNotification {
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// We use a serial queue that we toggle depending on if we are connected or
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// not. When we are not connected to a peer, the queue is running to handle
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// "connect" tries. When we are connected to a peer, the queue is suspended
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// thus no longer trying to connect.
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notConnectedQueue_ = dispatch_queue_create("PTExample.notConnectedQueue", DISPATCH_QUEUE_SERIAL);
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// Configure the output NSTextView we use for UI feedback
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outputTextView_.textContainerInset = NSMakeSize(15.0, 10.0);
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consoleTextAttributes_ = [NSDictionary dictionaryWithObjectsAndKeys:
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[NSFont fontWithName:@"helvetica" size:16.0], NSFontAttributeName,
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[NSColor lightGrayColor], NSForegroundColorAttributeName,
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nil];
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consoleStatusTextAttributes_ = [NSDictionary dictionaryWithObjectsAndKeys:
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[NSFont fontWithName:@"menlo" size:11.0], NSFontAttributeName,
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[NSColor darkGrayColor], NSForegroundColorAttributeName,
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nil];
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// Configure the input NSTextField we use for UI input
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[inputTextField_ setFont:[NSFont fontWithDescriptor:[[consoleTextAttributes_ objectForKey:NSFontAttributeName] fontDescriptor] size:14.0]];
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[self.window makeFirstResponder:inputTextField_];
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// Start listening for device attached/detached notifications
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[self startListeningForDevices];
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// Start trying to connect to local IPv4 port (defined in PTExampleProtocol.h)
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[self enqueueConnectToLocalIPv4Port];
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// Put a little message in the UI
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[self presentMessage:@"Ready for action — connecting at will." isStatus:YES];
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}
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- (IBAction)sendMessage:(id)sender {
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if (connectedChannel_) {
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NSString *message = self.inputTextField.stringValue;
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dispatch_data_t payload = [[message dataUsingEncoding:NSUTF8StringEncoding] createReferencingDispatchData];
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[connectedChannel_ sendFrameOfType:PTExampleFrameTypeTextMessage tag:PTFrameNoTag withPayload:payload callback:^(NSError *error) {
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if (error) {
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NSLog(@"Failed to send message: %@", error);
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}
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}];
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[self presentMessage:[NSString stringWithFormat:@"[you]: %@", message] isStatus:NO];
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self.inputTextField.stringValue = @"";
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}
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}
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- (void)presentMessage:(NSString*)message isStatus:(BOOL)isStatus {
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NSLog(@">> %@", message);
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[self.outputTextView.textStorage beginEditing];
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if (self.outputTextView.textStorage.length > 0) {
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message = [@"\n" stringByAppendingString:message];
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}
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[self.outputTextView.textStorage appendAttributedString:[[NSAttributedString alloc] initWithString:message attributes:isStatus ? consoleStatusTextAttributes_ : consoleTextAttributes_]];
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[self.outputTextView.textStorage endEditing];
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[NSAnimationContext beginGrouping];
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[NSAnimationContext currentContext].duration = 0.15;
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[NSAnimationContext currentContext].timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut];
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NSClipView* clipView = [[self.outputTextView enclosingScrollView] contentView];
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NSPoint newOrigin = clipView.bounds.origin;
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newOrigin.y += 5.0; // hack A 1/2
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[clipView setBoundsOrigin:newOrigin]; // hack A 2/2
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newOrigin.y += 1000.0;
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newOrigin = [clipView constrainScrollPoint:newOrigin];
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[clipView.animator setBoundsOrigin:newOrigin];
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[NSAnimationContext endGrouping];
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// Scrolling w/o animation:
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//[self.outputTextView scrollToEndOfDocument:self];
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}
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- (PTChannel*)connectedChannel {
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return connectedChannel_;
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}
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- (void)setConnectedChannel:(PTChannel*)connectedChannel {
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connectedChannel_ = connectedChannel;
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// Toggle the notConnectedQueue_ depending on if we are connected or not
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if (!connectedChannel_ && notConnectedQueueSuspended_) {
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dispatch_resume(notConnectedQueue_);
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notConnectedQueueSuspended_ = NO;
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} else if (connectedChannel_ && !notConnectedQueueSuspended_) {
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dispatch_suspend(notConnectedQueue_);
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notConnectedQueueSuspended_ = YES;
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}
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if (!connectedChannel_ && connectingToDeviceID_) {
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[self enqueueConnectToUSBDevice];
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}
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}
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#pragma mark - PTChannelDelegate
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- (BOOL)ioFrameChannel:(PTChannel*)channel shouldAcceptFrameOfType:(uint32_t)type tag:(uint32_t)tag payloadSize:(uint32_t)payloadSize {
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if ( type != PTExampleFrameTypeDeviceInfo
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&& type != PTExampleFrameTypeTextMessage
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&& type != PTFrameTypeEndOfStream) {
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NSLog(@"Unexpected frame of type %u", type);
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[channel close];
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return NO;
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} else {
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return YES;
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}
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}
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- (void)ioFrameChannel:(PTChannel*)channel didReceiveFrameOfType:(uint32_t)type tag:(uint32_t)tag payload:(PTData*)payload {
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//NSLog(@"received %@, %u, %u, %@", channel, type, tag, payload);
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if (type == PTExampleFrameTypeDeviceInfo) {
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NSDictionary *deviceInfo = [NSDictionary dictionaryWithContentsOfDispatchData:payload.dispatchData];
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[self presentMessage:[NSString stringWithFormat:@"Connected to %@", deviceInfo.description] isStatus:YES];
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} else if (type == PTExampleFrameTypeTextMessage) {
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NSString *message = [[NSString alloc] initWithBytes:payload.data length:payload.length encoding:NSUTF8StringEncoding];
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[self presentMessage:[NSString stringWithFormat:@"[%@]: %@", channel.userInfo, message] isStatus:NO];
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}
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}
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- (void)ioFrameChannel:(PTChannel*)channel didEndWithError:(NSError*)error {
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if (connectedDeviceID_ && [connectedDeviceID_ isEqualToNumber:channel.userInfo]) {
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[self didDisconnectFromDevice:connectedDeviceID_];
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}
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if (connectedChannel_ == channel) {
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[self presentMessage:[NSString stringWithFormat:@"Disconnected from %@", channel.userInfo] isStatus:YES];
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self.connectedChannel = nil;
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}
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}
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#pragma mark - Wired device connections
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- (void)startListeningForDevices {
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NSNotificationCenter *nc = [NSNotificationCenter defaultCenter];
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[nc addObserverForName:PTUSBDeviceDidAttachNotification object:PTUSBHub.sharedHub queue:nil usingBlock:^(NSNotification *note) {
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NSNumber *deviceID = [note.userInfo objectForKey:@"DeviceID"];
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//NSLog(@"PTUSBDeviceDidAttachNotification: %@", note.userInfo);
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NSLog(@"PTUSBDeviceDidAttachNotification: %@", deviceID);
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dispatch_async(notConnectedQueue_, ^{
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if (!connectingToDeviceID_ || ![deviceID isEqualToNumber:connectingToDeviceID_]) {
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[self disconnectFromCurrentChannel];
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connectingToDeviceID_ = deviceID;
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connectedDeviceProperties_ = [note.userInfo objectForKey:@"Properties"];
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[self enqueueConnectToUSBDevice];
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}
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});
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}];
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[nc addObserverForName:PTUSBDeviceDidDetachNotification object:PTUSBHub.sharedHub queue:nil usingBlock:^(NSNotification *note) {
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NSNumber *deviceID = [note.userInfo objectForKey:@"DeviceID"];
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//NSLog(@"PTUSBDeviceDidDetachNotification: %@", note.userInfo);
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NSLog(@"PTUSBDeviceDidDetachNotification: %@", deviceID);
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if ([connectingToDeviceID_ isEqualToNumber:deviceID]) {
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connectedDeviceProperties_ = nil;
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connectingToDeviceID_ = nil;
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if (connectedChannel_) {
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[connectedChannel_ close];
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}
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}
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}];
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}
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- (void)didDisconnectFromDevice:(NSNumber*)deviceID {
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NSLog(@"Disconnected from device");
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if ([connectedDeviceID_ isEqualToNumber:deviceID]) {
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[self willChangeValueForKey:@"connectedDeviceID"];
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connectedDeviceID_ = nil;
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[self didChangeValueForKey:@"connectedDeviceID"];
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}
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}
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- (void)disconnectFromCurrentChannel {
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if (connectedDeviceID_ && connectedChannel_) {
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[connectedChannel_ close];
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self.connectedChannel = nil;
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}
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}
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- (void)enqueueConnectToLocalIPv4Port {
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dispatch_async(notConnectedQueue_, ^{
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dispatch_async(dispatch_get_main_queue(), ^{
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[self connectToLocalIPv4Port];
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});
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});
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}
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- (void)connectToLocalIPv4Port {
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PTChannel *channel = [PTChannel channelWithDelegate:self];
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channel.userInfo = [NSString stringWithFormat:@"127.0.0.1:%d", PTExampleProtocolIPv4PortNumber];
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[channel connectToPort:PTExampleProtocolIPv4PortNumber IPv4Address:INADDR_LOOPBACK callback:^(NSError *error, PTAddress *address) {
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if (error) {
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if (error.domain == NSPOSIXErrorDomain && (error.code == ECONNREFUSED || error.code == ETIMEDOUT)) {
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// this is an expected state
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} else {
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NSLog(@"Failed to connect to 127.0.0.1:%d: %@", PTExampleProtocolIPv4PortNumber, error);
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}
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} else {
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[self disconnectFromCurrentChannel];
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self.connectedChannel = channel;
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channel.userInfo = address;
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NSLog(@"Connected to %@", address);
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}
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[self performSelector:@selector(enqueueConnectToLocalIPv4Port) withObject:nil afterDelay:PTAppReconnectDelay];
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}];
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}
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- (void)enqueueConnectToUSBDevice {
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dispatch_async(notConnectedQueue_, ^{
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dispatch_async(dispatch_get_main_queue(), ^{
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[self connectToUSBDevice];
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});
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});
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}
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- (void)connectToUSBDevice {
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PTChannel *channel = [PTChannel channelWithDelegate:self];
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channel.userInfo = connectingToDeviceID_;
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channel.delegate = self;
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[channel connectToPort:PTExampleProtocolIPv4PortNumber overUSBHub:PTUSBHub.sharedHub deviceID:connectingToDeviceID_ callback:^(NSError *error) {
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if (error) {
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if (error.domain == PTUSBHubErrorDomain && error.code == PTUSBHubErrorConnectionRefused) {
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NSLog(@"Failed to connect to device #%@: %@", channel.userInfo, error);
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} else {
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NSLog(@"Failed to connect to device #%@: %@", channel.userInfo, error);
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}
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if (channel.userInfo == connectingToDeviceID_) {
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[self performSelector:@selector(enqueueConnectToUSBDevice) withObject:nil afterDelay:PTAppReconnectDelay];
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}
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} else {
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connectedDeviceID_ = connectingToDeviceID_;
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self.connectedChannel = channel;
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//NSLog(@"Connected to device #%@\n%@", connectingToDeviceID_, connectedDeviceProperties_);
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//infoTextField_.stringValue = [NSString stringWithFormat:@"Connected to device #%@\n%@", deviceID, connectedDeviceProperties_];
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}
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}];
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}
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@end

‎Peertalk Example/PTExampleProtocol.h

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#ifndef peertalk_PTExampleProtocol_h
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#define peertalk_PTExampleProtocol_h
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#import <Foundation/Foundation.h>
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#include <stdint.h>
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static const int PTExampleProtocolIPv4PortNumber = 2345;
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enum {
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PTExampleFrameTypeDeviceInfo = 100,
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PTExampleFrameTypeTextMessage = 101,
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};
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typedef struct _PTExampleTextFrame {
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const uint8_t *utf8text;
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} PTExampleTextFrame;
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#endif

‎Peertalk Example/Peertalk Example-Info.plist

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<?xml version="1.0" encoding="UTF-8"?>
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<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
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<plist version="1.0">
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<dict>
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<key>CFBundleDevelopmentRegion</key>
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<string>en</string>
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<key>CFBundleExecutable</key>
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<string>${EXECUTABLE_NAME}</string>
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<key>CFBundleIconFile</key>
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<string>Icon</string>
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<key>CFBundleIdentifier</key>
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<string>me.rsms.peertalk.${PRODUCT_NAME:rfc1034identifier}</string>
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<key>CFBundleInfoDictionaryVersion</key>
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<string>6.0</string>
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<key>CFBundleName</key>
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<string>${PRODUCT_NAME}</string>
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<key>CFBundlePackageType</key>
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<string>APPL</string>
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<key>CFBundleShortVersionString</key>
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<string>1.0</string>
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<key>CFBundleSignature</key>
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<string>????</string>
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<key>CFBundleVersion</key>
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<string>1</string>
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<key>LSMinimumSystemVersion</key>
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<string>${MACOSX_DEPLOYMENT_TARGET}</string>
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<key>NSHumanReadableCopyright</key>
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<string>Copyright © 2012 __MyCompanyName__. All rights reserved.</string>
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<key>NSMainNibFile</key>
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<string>MainMenu</string>
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<key>NSPrincipalClass</key>
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<string>NSApplication</string>
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</dict>
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</plist>

‎Peertalk Example/Peertalk Example-Prefix.pch

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//
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// Prefix header for all source files of the 'Peertalk Example' target in the 'Peertalk Example' project
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//
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#ifdef __OBJC__
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#import <Cocoa/Cocoa.h>
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#endif

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