Hi Team , 1.We are facing a problem where tomcat is closing the http2 connections silently without sending GOAWAY and FIN. Under what cases does this happen ?
2. What happens when maxkeepaliverequests reaches the configured limit, will it close connections silently? 3. What happens when max Connections is reached, will it close older connections? 4. Currently we see keepalive timeout is default 20 seconds, but the connection is not closed after that. For requests received after 3 hours also we are sending response .Is there any way to close idle-connections ? Embedded Tomcat : 9.0.22 Thanks and Regards Arshiya Shariff -----Original Message----- From: Arshiya Shariff Sent: Monday, May 18, 2020 4:45 PM To: Mark Thomas <ma...@apache.org>; users@tomcat.apache.org Cc: M Venkata Pratap M <m.m.venkata.pra...@ericsson.com> Subject: RE: RST on TCP level sent by Tomcat Hi Mark, Thank you for the quick response. Please provide us a little more clarity on the 3rd query : 3. We see that RST is sent by tomcat on receiving http2 request, when does this happen ? >>> When things go wrong. E.g. when the client sends a request to a connection >>> that has been closed. Why does tomcat not send GOAWAY on connection close, upon next request from client it sends RST ? Also, Can you please send us the references to the timeout related fixes in 9.0.35 (since 9.0.22). Thanks and Regards Arshiya Shariff -----Original Message----- From: Mark Thomas <ma...@apache.org> Sent: Monday, May 18, 2020 4:17 PM To: users@tomcat.apache.org Subject: Re: RST on TCP level sent by Tomcat On 18/05/2020 11:01, Arshiya Shariff wrote: > Hi Team, > > Can you please help us with the below queries : There have been various timeout related fixes since 9.0.22. Please upgrade to 9.0.35 and re-test. > 1. When does a http2 connection close ? We see that the > keepAliveTimeout is > 20 seconds by default, but it is not closing the connection on > keepAliveTimeout. Please re-test with 9.0.35. > 2. How to keep the connections alive / How to enable ping frames to be > sent to the other end to keep the connection alive ? There is no standard API to send an HTTP/2 ping. If you want to keep the connections alive for longer, use a longer keep-alive setting. > 3. We see that RST is sent by tomcat on receiving http2 request, when > does this happen ? When things go wrong. E.g. when the client sends a request to a connection that has been closed. > 4. What are the recommended ipv4.tcp settings for these kind of scenarios ? There are no recommended settings. Mark > > > > Embedded Tomcat : 9.0.22 > > Java Version : 1.8.0.201 > > Hardware : Red Hat Enterprise Linux Server release > 7.4 > > > > Thanks and Regards > > Arshiya Shariff > --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
