> -----Original Message-----
> From: Konstantin Preißer [mailto:[email protected]]
> Sent: Thursday, October 17, 2013 1:23 AM
> To: 'Tomcat Developers List'
> Subject: Tomcat closes Websocket connection when using a SSL HTTP APR
> connector (was: RE: Tagging 7.0.46)
>
> > -----Original Message-----
> > From: Konstantin Preißer [mailto:[email protected]]
> > Sent: Wednesday, October 16, 2013 3:33 PM
>
> > I also need to do more testing because the error is not very reproducible
> on
> > my current machine (but I have another one where it was more
> > reproducible) to make sure what error exactly happens and when.
>
> Hi,
>
> I am now on a machine (Intel Core i7-3770, Win8 x64) where I can reproduce
> the error very easily (after a few seconds of drawing at the drawboard).
>
> In summary: When running current Tomcat trunk on Windows 8 x64 with Java
> 1.7.0_45 x64 and TC-Native 1.1.29, and using a SSL HTTP APR connector, then
> Tomcat will close the Websocket connection after a few seconds of drawing
> to the Drawboard Websocket example. This does not happen with a non-SSL
> APR connector.
>
> What I did was:
> 1) Checkout trunk (r1532781). Then update the path
> "webapps/examples/WEB-INF/classes/websocket" to r1532286 because
> after this revision I made a change to the Room implementation which makes
> the error harder to reproduce.
> 2) Build the working copy, then copy the current v1.1.29 "tcnative-1.dll" into
> the bin directory.
> 3) Configure a SSL HTTP APR connector in server.xml:
>
> <Connector
> protocol="HTTP/1.1"
> port="8443" maxThreads="200"
> scheme="https" secure="true" SSLEnabled="true"
> connectionTimeout="20000"
> SSLCertificateFile="${catalina.base}\conf\ssl\mycert.crt"
> SSLCertificateKeyFile="${catalina.base}\conf\ssl\mypem.pem"
> SSLVerifyClient="optional" SSLProtocol="TLSv1"
> />
>
> 4) Run Tomcat; then open Firefox and visit
> https://localhost:8443/examples/websocket/drawboard.xhtml
> 5) Draw continuously on the drawboard (e.g. by doing fast circular
> movements with the mouse) using the "Brush" setting.
> 6) After a several seconds, Firefox will display "Websocket connection
> closed" and you can't draw anymore. Tomcat doesn't log anything to the
> console.
>
> When using my TCP forwarder tool between Firefox and Tomcat, I can see
> that Tomcat aborts/resets the TCP connection (Winsock error: 10053 and
> 10054) when this happens.
>
> When you try this with a non-SSL HTTP APR connector, everything works
> fine: The Websocket connection will not be closed, regardless of how long
> you are drawing.
Additional information:
When I try this with r1532720, then when this close of the Websocket connection
happens, Tomcat logs following exception:
17-Oct-2013 01:38:28.378 SEVERE [http-apr-8443-exec-1]
websocket.drawboard.DrawboardEndpoint.onError onError: java.io.IOException:
Unexpected error [20,014] reading data from the APR/native socket [245,310,416].
java.io.IOException: Unexpected error [20,014] reading data from the
APR/native socket [245,310,416].
at
org.apache.coyote.http11.upgrade.AprServletInputStream.doRead(AprServletInputStream.java:104)
at
org.apache.coyote.http11.upgrade.AbstractServletInputStream.read(AbstractServletInputStream.java:116)
at
org.apache.tomcat.websocket.server.WsFrameServer.onDataAvailable(WsFrameServer.java:46)
at
org.apache.tomcat.websocket.server.WsHttpUpgradeHandler$WsReadListener.onDataAvailable(WsHttpUpgradeHandler.java:192)
at
org.apache.coyote.http11.upgrade.AbstractServletInputStream.onDataAvailable(AbstractServletInputStream.java:169)
at
org.apache.coyote.http11.upgrade.AbstractProcessor.upgradeDispatch(AbstractProcessor.java:95)
at
org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:640)
at
org.apache.coyote.http11.Http11AprProtocol$Http11ConnectionHandler.process(Http11AprProtocol.java:282)
at
org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2461)
at
org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2450)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:744)
However, since r1532721, when the closing of Websocket/TCP connection happens,
no exception is logged.
Regards,
Konstantin Preißer
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