null ServerContainer

[drobertus]

I am trying to stand up sockjs with either jetty or undertow (I would prefer jetty).
I am following the example for undertow as best I am able. In both cases I hit an exception on line 74 of SockJsServlet. I am trying to stand these server up in a test harness, with an embedded web server. I would love to see a working example of a servlet operating in Jetty. I get the same exception in both cases.

Here is how I am setting up the server (undertown shown):

    DeploymentInfo servletBuilder = Servlets.deployment()
        .setClassLoader(EchoServlet.class.getClassLoader())
        .setContextPath("/")
        .setDeploymentName("echotest.war")
        .addServlets(
        Servlets.servlet("EchoServlet", EchoServlet.class)
            .addInitParam("message", "Hello World")
            .addMapping("/echo/*"));
    DeploymentManager manager = Servlets.defaultContainer().addDeployment(servletBuilder);
    manager.deploy();
    PathHandler path = Handlers.path(Handlers.redirect("/"))
        .addPrefixPath("/", manager.start());

    server = Undertow.builder()
        .addHttpListener(9088, "localhost")
        .setHandler(path)
        .build();
    server.start();

---

Here is the exception stack I am seeing:

Jan 24, 2015 11:25:37 AM org.xnio.Xnio
INFO: XNIO version 3.3.0.Final
Jan 24, 2015 11:25:38 AM org.xnio.nio.NioXnio
INFO: XNIO NIO Implementation Version 3.3.0.Final
2015-01-24 11:25:38.894:INFO::main: Logging initialized @6063ms
Jan 24, 2015 11:25:39 AM io.undertow.servlet.api.LoggingExceptionHandler handleThrowable
ERROR: UT005023: Exception handling request to /echo
java.lang.NullPointerException
at org.projectodd.sockjs.servlet.SockJsServlet.init(SockJsServlet.java:74)
at com.thing.stomper.server.EchoServlet.super$4$init(EchoServlet.groovy)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:90)
at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:324)
at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:1207)
at org.codehaus.groovy.runtime.ScriptBytecodeAdapter.invokeMethodOnSuperN(ScriptBytecodeAdapter.java:128)
at org.codehaus.groovy.runtime.ScriptBytecodeAdapter.invokeMethodOnSuper0(ScriptBytecodeAdapter.java:148)
at com.thing.stomper.server.EchoServlet.init(EchoServlet.groovy:48)
at javax.servlet.GenericServlet.init(GenericServlet.java:244)
at io.undertow.servlet.core.LifecyleInterceptorInvocation.proceed(LifecyleInterceptorInvocation.java:117)
at io.undertow.servlet.core.ManagedServlet$DefaultInstanceStrategy.start(ManagedServlet.java:220)
at io.undertow.servlet.core.ManagedServlet.getServlet(ManagedServlet.java:163)
at io.undertow.servlet.handlers.ServletHandler.handleRequest(ServletHandler.java:84)
at io.undertow.servlet.handlers.security.ServletSecurityRoleHandler.handleRequest(ServletSecurityRoleHandler.java:61)
at io.undertow.servlet.handlers.ServletDispatchingHandler.handleRequest(ServletDispatchingHandler.java:36)
at io.undertow.servlet.handlers.security.SSLInformationAssociationHandler.handleRequest(SSLInformationAssociationHandler.java:131)
at io.undertow.servlet.handlers.security.ServletAuthenticationCallHandler.handleRequest(ServletAuthenticationCallHandler.java:56)
at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
at io.undertow.security.handlers.AbstractConfidentialityHandler.handleRequest(AbstractConfidentialityHandler.java:45)
at io.undertow.servlet.handlers.security.ServletConfidentialityConstraintHandler.handleRequest(ServletConfidentialityConstraintHandler.java:63)
at io.undertow.security.handlers.AuthenticationMechanismsHandler.handleRequest(AuthenticationMechanismsHandler.java:58)
at io.undertow.servlet.handlers.security.CachedAuthenticatedSessionHandler.handleRequest(CachedAuthenticatedSessionHandler.java:70)
at io.undertow.security.handlers.SecurityInitialHandler.handleRequest(SecurityInitialHandler.java:76)
at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
at io.undertow.servlet.handlers.ServletInitialHandler.handleFirstRequest(ServletInitialHandler.java:261)
at io.undertow.servlet.handlers.ServletInitialHandler.dispatchRequest(ServletInitialHandler.java:247)
at io.undertow.servlet.handlers.ServletInitialHandler.access$000(ServletInitialHandler.java:76)
at io.undertow.servlet.handlers.ServletInitialHandler$1.handleRequest(ServletInitialHandler.java:166)
at io.undertow.server.Connectors.executeRootHandler(Connectors.java:197)
at io.undertow.server.HttpServerExchange$1.run(HttpServerExchange.java:759)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:744)

java.util.concurrent.ExecutionException: org.eclipse.jetty.websocket.api.UpgradeException: Didn't switch protocols
at org.eclipse.jetty.util.FuturePromise.get(FuturePromise.java:123)
at com.thing.stomper.server.EchoServerIntegTest.test echo servlet(EchoServerIntegTest.groovy:43)
Caused by: org.eclipse.jetty.websocket.api.UpgradeException: Didn't switch protocols
at org.eclipse.jetty.websocket.client.io.UpgradeConnection.validateResponse(UpgradeConnection.java:275)
at org.eclipse.jetty.websocket.client.io.UpgradeConnection.read(UpgradeConnection.java:203)
at org.eclipse.jetty.websocket.client.io.UpgradeConnection.onFillable(UpgradeConnection.java:148)
at org.eclipse.jetty.io.AbstractConnection$2.run(AbstractConnection.java:534)
at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:607)
at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:536)
at java.lang.Thread.run(Thread.java:744)