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https://issues.apache.org/jira/browse/AMQ-4857?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14027307#comment-14027307
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Arthur Naseef commented on AMQ-4857:
------------------------------------
Fix revision:
https://git-wip-us.apache.org/repos/asf?p=activemq.git;a=commit;h=692428eee5f7af1118881c1140ff45cd33e99d18
> WSServlet.doWebSocketConnect throws NPE if called with null protocol
> --------------------------------------------------------------------
>
> Key: AMQ-4857
> URL: https://issues.apache.org/jira/browse/AMQ-4857
> Project: ActiveMQ
> Issue Type: Bug
> Reporter: Kevin Earls
> Assignee: Kevin Earls
> Fix For: 5.9.1, 5.10.0
>
>
> I got the NPE shown below while working on a websocket demo.
> WebSocketFactory.acceptWebSocket calls WSServlet.doWebSocketConnect with the
> protocol hard coded to null.
> java.lang.NullPointerException
> at
> org.apache.activemq.transport.ws.WSServlet.doWebSocketConnect(WSServlet.java:54)
> at
> org.eclipse.jetty.websocket.WebSocketFactory.acceptWebSocket(WebSocketFactory.java:372)
> at
> org.eclipse.jetty.websocket.WebSocketServlet.service(WebSocketServlet.java:104)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:806)
> at
> org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:652)
> at
> org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:445)
> at
> org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1044)
> at
> org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:372)
> at
> org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:978)
> 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:367)
> at
> org.eclipse.jetty.server.AbstractHttpConnection.handleRequest(AbstractHttpConnection.java:486)
> at
> org.eclipse.jetty.server.AbstractHttpConnection.headerComplete(AbstractHttpConnection.java:926)
> at
> org.eclipse.jetty.server.AbstractHttpConnection$RequestHandler.headerComplete(AbstractHttpConnection.java:988)
> at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:640)
> 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:628)
> 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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