Sample demo project to test Apache Camel Websocket component on Jetty.
Following are the steps to run the application.
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IMPORTANT: Update your Twitter credentials in this class src/main/java/demo/websocket/TwitterStreamRoute.java otherwise you will get an authorization exception when you start the server (and the Camel route is deployed)
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$mvn clean install
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For some reason $mvn jetty:run (or any other related command from the jetty-maven-plugin give the expections (see below). Therefore I used the Jetty Runner (http://wiki.eclipse.org/Jetty/Howto/Using_Jetty_Runner) to deploy the generated war file instead.
$java -jar jetty-runner-7.6.8.v20121106.jar target/jettycamelwebsocket.war
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Point your web browser (I used Google Chrome) to http://localhost:8080/index.html
Here is a stackoverflow discussion regarding that is relevant to this piece of code. http://stackoverflow.com/questions/16387729/exception-running-a-simple-websocket-with-camel-component-on-jetty
Still not able to run because I'm getting the following error:
java.lang.NullPointerException at org.eclipse.jetty.websocket.WebSocketFactory.upgrade(WebSocketFactory.java:236)[jetty-websocket-8.1.9.v20130131.jar:8.1.9.v20130131] at org.eclipse.jetty.websocket.WebSocketFactory.acceptWebSocket(WebSocketFactory.java:382)[jetty-websocket-8.1.9.v20130131.jar:8.1.9.v20130131] at org.eclipse.jetty.websocket.WebSocketServlet.service(WebSocketServlet.java:104)[jetty-websocket-7.6.8.v20121106.jar:7.6.8.v20121106] at javax.servlet.http.HttpServlet.service(HttpServlet.java:848)[javax.servlet-3.0.0.v201112011016.jar:] at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:598)[jetty-servlet-8.1.3.v20120416.jar:8.1.9.v20130131] at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:486)[jetty-servlet-8.1.3.v20120416.jar:8.1.9.v20130131] at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1065)[jetty-server-8.1.3.v20120416.jar:8.1.9.v20130131] at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:413)[jetty-servlet-8.1.3.v20120416.jar:8.1.9.v20130131] at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:999)[jetty-server-8.1.3.v20120416.jar:8.1.9.v20130131] at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:117)[jetty-server-8.1.3.v20120416.jar:8.1.9.v20130131] at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:111)[jetty-server-8.1.3.v20120416.jar:8.1.9.v20130131] at org.eclipse.jetty.server.Server.handle(Server.java:350)[jetty-server-8.1.3.v20120416.jar:8.1.9.v20130131] at org.eclipse.jetty.server.AbstractHttpConnection.handleRequest(AbstractHttpConnection.java:454)[jetty-server-8.1.3.v20120416.jar:8.1.9.v20130131] at org.eclipse.jetty.server.AbstractHttpConnection.headerComplete(AbstractHttpConnection.java:890)[jetty-server-8.1.3.v20120416.jar:8.1.9.v20130131] at org.eclipse.jetty.server.AbstractHttpConnection$RequestHandler.headerComplete(AbstractHttpConnection.java:944)[jetty-server-8.1.3.v20120416.jar:8.1.9.v20130131] at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:630)[jetty-http-8.1.3.v20120416.jar:8.1.9.v20130131] at org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:230)[jetty-http-8.1.3.v20120416.jar:8.1.9.v20130131] at org.eclipse.jetty.server.AsyncHttpConnection.handle(AsyncHttpConnection.java:77)[jetty-server-8.1.3.v20120416.jar:8.1.9.v20130131] at org.eclipse.jetty.io.nio.SelectChannelEndPoint.handle(SelectChannelEndPoint.java:606)[jetty-io-8.1.3.v20120416.jar:8.1.9.v20130131] at org.eclipse.jetty.io.nio.SelectChannelEndPoint$1.run(SelectChannelEndPoint.java:46)[jetty-io-8.1.3.v20120416.jar:8.1.9.v20130131] at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:603)[jetty-util-8.1.3.v20120416.jar:8.1.9.v20130131] at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:538)[jetty-util-8.1.3.v20120416.jar:8.1.9.v20130131] at java.lang.Thread.run(Thread.java:680)[:1.6.0_45]
Made some changes to the pom.xml but still getting the following error:
java.lang.NullPointerException at org.eclipse.jetty.websocket.WebSocketFactory.upgrade(WebSocketFactory.java:236)[jetty-websocket-7.6.9.v20130131.jar:7.6.9.v20130131] at org.eclipse.jetty.websocket.WebSocketFactory.acceptWebSocket(WebSocketFactory.java:382)[jetty-websocket-7.6.9.v20130131.jar:7.6.9.v20130131] at org.eclipse.jetty.websocket.WebSocketServlet.service(WebSocketServlet.java:104)[jetty-websocket-7.6.8.v20121106.jar:7.6.8.v20121106] at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)[javax.servlet-2.5.0.v201103041518.jar:] at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:652)[jetty-servlet-7.6.9.v20130131.jar:7.6.9.v20130131] at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:445)[jetty-servlet-7.6.9.v20130131.jar:7.6.9.v20130131] at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1044)[jetty-server-7.6.9.v20130131.jar:7.6.9.v20130131] at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:372)[jetty-servlet-7.6.9.v20130131.jar:7.6.9.v20130131] at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:978)[jetty-server-7.6.9.v20130131.jar:7.6.9.v20130131] at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:135)[jetty-server-7.6.9.v20130131.jar:7.6.9.v20130131] at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:116)[jetty-server-7.6.9.v20130131.jar:7.6.9.v20130131] at org.eclipse.jetty.server.Server.handle(Server.java:367)[jetty-server-7.6.9.v20130131.jar:7.6.9.v20130131] at org.eclipse.jetty.server.AbstractHttpConnection.handleRequest(AbstractHttpConnection.java:486)[jetty-server-7.6.9.v20130131.jar:7.6.9.v20130131] at org.eclipse.jetty.server.AbstractHttpConnection.headerComplete(AbstractHttpConnection.java:926)[jetty-server-7.6.9.v20130131.jar:7.6.9.v20130131] at org.eclipse.jetty.server.AbstractHttpConnection$RequestHandler.headerComplete(AbstractHttpConnection.java:988)[jetty-server-7.6.9.v20130131.jar:7.6.9.v20130131] at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:640)[jetty-http-7.6.9.v20130131.jar:7.6.9.v20130131] at org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:235)[jetty-http-7.6.9.v20130131.jar:7.6.9.v20130131] at org.eclipse.jetty.server.AsyncHttpConnection.handle(AsyncHttpConnection.java:82)[jetty-server-7.6.9.v20130131.jar:7.6.9.v20130131] at org.eclipse.jetty.io.nio.SelectChannelEndPoint.handle(SelectChannelEndPoint.java:628)[jetty-io-7.6.9.v20130131.jar:7.6.9.v20130131] at org.eclipse.jetty.io.nio.SelectChannelEndPoint$1.run(SelectChannelEndPoint.java:52)[jetty-io-7.6.9.v20130131.jar:7.6.9.v20130131] at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:608)[jetty-util-7.6.9.v20130131.jar:7.6.9.v20130131] at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:543)[jetty-util-7.6.9.v20130131.jar:7.6.9.v20130131] at java.lang.Thread.run(Thread.java:662)[:1.6.0_32]