On Tue, Aug 6, 2013 at 3:20 PM, Bob DeRemer <bob.dere...@thingworx.com>wrote:
> > > > -----Original Message----- > > From: Mark Thomas [mailto:ma...@apache.org] > > Sent: Tuesday, August 06, 2013 3:56 AM > > To: Tomcat Users List > > Subject: Re: any known problems using Tomcat 7.0.42 apr/native (windows) > > with websockets? > > > > On 06/08/2013 03:45, Bob DeRemer wrote: > > > QUESTION > > > > > > Is anyone aware of any problems using the apr/native connector + > > > websockets in Tomcat 7.0.42? > > > > I'm not aware of any reports. > > > > > BACKGROUND > > > > > > We are trying to see how many concurrent websocket connections Tomcat > > > will handle running on Windows Server. We wrote a multi-threaded java > > > console app that spins up a thread-per simulated websocket client. In > > > each thread, we are using a separate Ning websocket client. > > > Unfortunately, we can't connect more than a few connections before we > > > start getting websocket errors. > > > > What sort of errors? > > I believe the connection was being closed unexpectedly > > > > > > If we change the connector to use NIO, the sporadic connection errors > > > seem to go away, but then we find that after about 200 connections, > > > the communication seems to hang. This happens if all connections are > > > made from a single test client instance or spread across multiple > > > client instances. > > > > That suggests at least some issue with APR/native and WebSocket. > > > > > We're trying to determine where the problem lies and if it's in our > > > use of Ning in a multi-threaded client app, Tomcat connector > > > configuration, use of Tomcat websockets on Windows or something else. > > > > The focus in Tomcat 7 is going to move to the JSR356 implementation > pretty > > soon. I'd suggest looking at that rather than putting effort into Tomcat > 7's > > current implementation. > > Are there any examples for what must be written server-side? > Also, is there a version of Tomcat (7 or 8) that has this functionality > available to test against? > > > > > > If anyone has any suggestions, I would greatly appreciate it. If you > > > need additional information, please don't hesitate to ask. > > > > I'll look into adding a concurrent client test to the Tomcat unit tests. > > > Here https://nick...@bitbucket.org/nickytd/websocket-echo-client.git is what I used for some of the tests for Tomcat 8. It's more a stress than load but still. Nikolai Dokovski > Mark > > > > Bob > > > > --------------------------------------------------------------------- > > To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org > > For additional commands, e-mail: users-h...@tomcat.apache.org > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org > For additional commands, e-mail: users-h...@tomcat.apache.org > >
