2013/11/26 Nick Williams <nicho...@nicholaswilliams.net>:
>
> 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.
I reopened the bug,
https://issues.apache.org/bugzilla/show_bug.cgi?id=55799#c15
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