On Mon, Nov 4, 2013 at 5:52 AM, Bob DeRemer <bob.dere...@thingworx.com>wrote:
> > > > -----Original Message----- > > From: Bob DeRemer [mailto:bob.dere...@thingworx.com] > > Sent: Sunday, November 03, 2013 8:31 PM > > To: Tomcat Users List > > Subject: Can Tomcat 7 jsr-356 plumbing be configured to automatically > send > > websocket ping/pong on a specified interval? > > > > During our testing of large scale websocket connections going through > Amazon > > ELB, we've found that ELB will timeout idle TCP connections after 60 > seconds. > > Our testing scenarios is one where we want to ramp up 10(s) of 1000s of > > websocket connections - then, after they are all connected, start them > sending > > request/response messages for some specified duration. > > > > To avoid ELB closing our connection, we'd like to see if we can > configure the > > tomcat plumbing to automatically send ping(s) on some interval. And, the > > follow-up question: if we can have a ping being sent automatically, will > the > > other end of the pipe respond with a pong? > Sending ping control frame is handled by the application entirely. The container will not send those frames on its own. The other peer will respond with a pong as described by WSC 2.2.5-1 [1] and WebSocket RFC [2] > > > > Thanks, > > Bob > > FOLLOW-UP: will the Ping message be sent if an empty byte[] is passed, or > must it contain at least 1 byte? > The payload of the ping control frame is optional, by definition. > > > > http://www.thingworx.com<http://www.thingworx.com/> > > Skype: bob.deremer.thingworx > > O: 610.594.6200 x812 > > M: 717.881.3986 > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org > For additional commands, e-mail: users-h...@tomcat.apache.org > > [1] JSR356 WebSocket for Java API http://jcp.org/en/jsr/detail?id=356 [2] RFC 6455 http://tools.ietf.org/html/rfc6455#section-5.5.2
