On Nov 25, 2013, at 9:11 PM, Konstantin Kolinko wrote:
> 2013/11/25 Nick Williams <nicho...@nicholaswilliams.net>:
>> I've written a simple Servlet/WebSocket client that sends a message over the
>> Session each time a GET request comes in. This worked a few months ago:
>>
>> @Override
>> protected void doGet(HttpServletRequest request, HttpServletResponse
>> response)
>> throws ServletException, IOException
>> {
>> ClusterMessage message = new ClusterMessage(this.nodeId,
>> "request:{ip:\"" + request.getRemoteAddr() +
>> "\",queryString:\"" + request.getQueryString() + "\"}");
>>
>> try(OutputStream output =
>> this.session.getBasicRemote().getSendStream();
>> ObjectOutputStream stream = new ObjectOutputStream(output))
>> {
>> stream.writeObject(message);
>> }
>> response.getWriter().append("OK");
>> }
>>
>> But on the latest trunk, I get this error on the first request to doGet:
>>
>> java.lang.IllegalStateException: The remote endpoint was in state
>> [STREAM_WRITING] which is an invalid state for called method
>>
>> org.apache.tomcat.websocket.WsRemoteEndpointImplBase$StateMachine.checkState(WsRemoteEndpointImplBase.java:1014)
>>
>> org.apache.tomcat.websocket.WsRemoteEndpointImplBase$StateMachine.binaryPartialStart(WsRemoteEndpointImplBase.java:961)
>>
>> org.apache.tomcat.websocket.WsRemoteEndpointImplBase.sendPartialBytes(WsRemoteEndpointImplBase.java:140)
>>
>> org.apache.tomcat.websocket.WsRemoteEndpointImplBase$WsOutputStream.doWrite(WsRemoteEndpointImplBase.java:838)
>>
>> org.apache.tomcat.websocket.WsRemoteEndpointImplBase$WsOutputStream.flush(WsRemoteEndpointImplBase.java:821)
>>
>> java.io.ObjectOutputStream$BlockDataOutputStream.flush(ObjectOutputStream.java:1823)
>> java.io.ObjectOutputStream.flush(ObjectOutputStream.java:719)
>> java.io.ObjectOutputStream.close(ObjectOutputStream.java:740)
>> com.wrox.ClusterNodeServlet.doGet(ClusterNodeServlet.java:72)
>> javax.servlet.http.HttpServlet.service(HttpServlet.java:621)
>> javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
>> org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:51)
>>
>> On all subsequent requests, I get this error:
>>
>> java.lang.IllegalStateException: The remote endpoint was in state
>> [STREAM_WRITING] which is an invalid state for called method
>>
>> org.apache.tomcat.websocket.WsRemoteEndpointImplBase$StateMachine.checkState(WsRemoteEndpointImplBase.java:1014)
>>
>> org.apache.tomcat.websocket.WsRemoteEndpointImplBase$StateMachine.streamStart(WsRemoteEndpointImplBase.java:951)
>>
>> org.apache.tomcat.websocket.WsRemoteEndpointImplBase.getSendStream(WsRemoteEndpointImplBase.java:190)
>>
>> org.apache.tomcat.websocket.WsRemoteEndpointBasic.getSendStream(WsRemoteEndpointBasic.java:62)
>> com.wrox.ClusterNodeServlet.doGet(ClusterNodeServlet.java:68)
>> javax.servlet.http.HttpServlet.service(HttpServlet.java:621)
>> javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
>> org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:51)
>>
>> I'm guessing I need to file a BZ, but I wanted to make sure. I don't see how
>> I could possibly be doing anything wrong in this simple code.
>>
>
>
> There was this change:
> http://svn.apache.org/viewvc?view=revision&revision=1544213
>
> <fix>
> <bug>55799</bug>: Correctly enforce the restriction in JSR356 that no
> more than one data message may be sent to a remote WebSocket endpoint
> at
> a time. (markt)
> </fix>
Problem is, I'm only sending one data message. That's it. The very first and
only data message I send triggers the first error. The second error is before I
even get to sending a data message; it's when I retrieve a stream. Something's
definitely broken. Even IF I were sending multiple messages (again, I'm not);
they should be queued, not result in an error that leaves the Session in an
inconsistent state indefinitely.
N
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