My game is a full on server/client app, so I'm not sure how exactly to
remove jetty from the WEB-INF/lib without breaking the game. The
index.html file for the game loads resources then opens a websocket to the
jetty server from which it was just served. The server code in the app has
a websocket listener that processes all the communication from the client
as players play the game. In production, the app is served from a jetty
service that simply loads up the game's .war file and goes.
In testing, I just want to simulate the server by loading the war file
directory programatically. The test server looks like this:
import org.eclipse.jetty.server.Server;
import org.eclipse.jetty.webapp.WebAppContext;
public final class WebSocketServer {
public static void main (String[] args) throws Exception {
Server server = new Server(8081);
WebAppContext context = new WebAppContext();
context.setDescriptor("/tacan-app/war/WEB-INF/web.xml");
context.setResourceBase("/tacan-app/war");
context.setContextPath("/game");
context.setParentLoaderPriority(true);
server.setHandler(context);
server.start();
server.join();
}
}
On Mon, Feb 17, 2014 at 9:49 AM, Joakim Erdfelt <[email protected]> wrote:
> You have the websocket classes both in the server side and also in the
> webapp side.
>
> To fix, remove the websocket classes from your webapp's WEB-INF/lib/ tree.
>
> --
> Joakim Erdfelt <[email protected]>
> webtide.com <http://www.webtide.com/> - intalio.com/jetty
> Expert advice, services and support from from the Jetty & CometD experts
> eclipse.org/jetty - cometd.org
>
>
> On Mon, Feb 17, 2014 at 9:34 AM, Jason Fugate <[email protected]>wrote:
>
>>
>> I'm updating my WebSocket game from Jetty 8 to Jetty 9. I have a little
>> embedded test server that I use to launch the game for debugging, which
>> works in Jetty 8. After updating the .jar files to 9 and refactoring my
>> WebSocket classes to the new paradigm in 9, I can launch the embedded test
>> server, but when I connect to it in the browser, I get the below error and
>> stack trace.
>>
>> Manually breakpointing the callstack shows that it is failing on loading
>> org.eclipse.jetty.util.component.Container, which is strange because it
>> seemingly creates such Containers with ease in the launch of the server.
>>
>> This link is a screenshot of my build path in Eclipse:
>> http://imgur.com/d7XOgsM The app builds with GWT 2.6. Any ideas on
>> what I'm missing here?
>>
>> java.lang.IncompatibleClassChangeError: Implementing class
>> at java.lang.ClassLoader.defineClass1(Native Method)
>> at java.lang.ClassLoader.defineClass(ClassLoader.java:800)
>> at
>> java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
>> at java.net.URLClassLoader.defineClass(URLClassLoader.java:449)
>> at java.net.URLClassLoader.access$100(URLClassLoader.java:71)
>> at java.net.URLClassLoader$1.run(URLClassLoader.java:361)
>> at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
>> at java.security.AccessController.doPrivileged(Native Method)
>> at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
>> at
>> org.eclipse.jetty.webapp.WebAppClassLoader.loadClass(WebAppClassLoader.java:421)
>> at
>> org.eclipse.jetty.webapp.WebAppClassLoader.loadClass(WebAppClassLoader.java:383)
>> at java.lang.ClassLoader.defineClass1(Native Method)
>> at java.lang.ClassLoader.defineClass(ClassLoader.java:800)
>> at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
>> at java.net.URLClassLoader.defineClass(URLClassLoader.java:449)
>> at java.net.URLClassLoader.access$100(URLClassLoader.java:71)
>> at java.net.URLClassLoader$1.run(URLClassLoader.java:361)
>> at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
>> at java.security.AccessController.doPrivileged(Native Method)
>> at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
>> at
>> org.eclipse.jetty.webapp.WebAppClassLoader.loadClass(WebAppClassLoader.java:421)
>> at
>> org.eclipse.jetty.webapp.WebAppClassLoader.loadClass(WebAppClassLoader.java:383)
>> at java.lang.Class.forName0(Native Method)
>> at java.lang.Class.forName(Class.java:270)
>> at java.util.ServiceLoader$LazyIterator.next(ServiceLoader.java:363)
>> at java.util.ServiceLoader$1.next(ServiceLoader.java:445)
>> at
>> org.eclipse.jetty.websocket.servlet.WebSocketServletFactory$Loader.load(WebSocketServletFactory.java:56)
>> at
>> org.eclipse.jetty.websocket.servlet.WebSocketServletFactory$Loader.create(WebSocketServletFactory.java:42)
>> at
>> org.eclipse.jetty.websocket.servlet.WebSocketServlet.init(WebSocketServlet.java:128)
>> at javax.servlet.GenericServlet.init(GenericServlet.java:244)
>> at
>> org.eclipse.jetty.servlet.ServletHolder.initServlet(ServletHolder.java:534)
>> at
>> org.eclipse.jetty.servlet.ServletHolder.getServlet(ServletHolder.java:417)
>> at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:659)
>> at
>> org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:501)
>> at
>> org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:137)
>> at
>> org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:557)
>> at
>> org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:231)
>> at
>> org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1086)
>> at
>> org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:428)
>> at
>> org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:193)
>> at
>> org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1020)
>> at
>> org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:135)
>> at
>> org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:116)
>> at org.eclipse.jetty.server.Server.handle(Server.java:366)
>> at
>> org.eclipse.jetty.server.AbstractHttpConnection.handleRequest(AbstractHttpConnection.java:489)
>> at
>> org.eclipse.jetty.server.AbstractHttpConnection.headerComplete(AbstractHttpConnection.java:949)
>> at
>> org.eclipse.jetty.server.AbstractHttpConnection$RequestHandler.headerComplete(AbstractHttpConnection.java:1011)
>> at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:644)
>> at org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:235)
>> at
>> org.eclipse.jetty.server.AsyncHttpConnection.handle(AsyncHttpConnection.java:82)
>> at
>> org.eclipse.jetty.io.nio.SelectChannelEndPoint.handle(SelectChannelEndPoint.java:668)
>> at
>> org.eclipse.jetty.io.nio.SelectChannelEndPoint$1.run(SelectChannelEndPoint.java:52)
>> at
>> org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:608)
>> at
>> org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:543)
>> at java.lang.Thread.run(Thread.java:744)
>>
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>>
>>
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