Tomcat closes websocket without any error receiving WebSocket ContinuationFrames

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Has anyone had a large WS message sent as the response to an outbound call? We have a scenario where the request causes a 300K WS message to be sent back as the "response". The client is sending multiple WS continuation frames and after a couple of frames are successfully sent, Tomcat just closes the websocket connection. I the response fits in a single frame, it's fine. Where can I look to try and troubleshoot this?

posted Aug 16, 2013 by Jagan Mishra

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1 Answer

My first stop would be something like Wireshark to check that what the client is sending is valid.

If the input is valid then there isn't much logging in the Tomcat 7 non-JSR356 WebSocket implementation so I'd probably move on to remote debugging to see what is going on.

answer Aug 16, 2013 by Satish Mishra

Assuming the continuation frames are ok, what code in the non-jsr IMPL should I set some breakpoints in?

commented Aug 16, 2013 by anonymous

I'd start with org.apache.catalina.websocket.WsFrame.nextFrame(...)

You may need to go up or down the stack from there depending on where the problem lies.

commented Aug 16, 2013 by anonymous

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