Hi Team, I am facing one unusual problem with tomcat. I am using 2 tomcat server for master and slave architecture. when master send's HTTP request(POST) to slave if slave is taking more then 1 hr then the slave tomcat is not responding back but in slave tomcat's localhost_access.log is showing request as 200 ok but that is not revived by master tomcat server there is no time out (we are using infinite connection time out ) send I checked master's tcp connection after 1 hr it is good(ESTABLISHED).
So I tried to capture all requests at slave server's tcp port by tcpdump but the request is lost after tomcat logs into localhost_access.log(as a success) but not went to tcp port. No idea where the request lost. Details and logs : tomcat 8.0 ------------ *localhost_access_log.txt of slave* xx.xx.xx.xx - - [18/Oct/2019:08:51:07 -0400] "POST /path/process5 HTTP/1.1" 200 2737 *tcpdump output at slave * reading from file /tmp/http18103.log, link-type EN10MB (Ethernet) 07:36:32.960401 IP xx.xx.xx.xx.52978 > slaveServer.webcache: Flags [P.], seq 282516513:282516889, ack 3687166207, win 229, options [nop,nop,TS val 3093985757 ecr 3091920822], length 376: HTTP: POST /path/process1 HTTP/1.1 07:36:34.783281 IP slaveServer.webcache > xx.xx.xx.xx.52978: Flags [.], seq 1:2577, ack 2838, win 280, options [nop,nop,TS val 3091922673 ecr 3093985759], length 2576: HTTP: HTTP/1.1 200 07:36:45.022982 IP xx.xx.xx.xx.53120 > slaveServer.webcache: Flags [P.], seq 1539707126:1539707502, ack 2187000281, win 229, options [nop,nop,TS val 3093997820 ecr 3091932884], length 376: HTTP: POST /path/process2 HTTP/1.1 07:36:56.300518 IP slaveServer.webcache > xx.xx.xx.xx.53120: Flags [.], seq 1:2577, ack 3329, win 300, options [nop,nop,TS val 3091944190 ecr 3093997820], length 2576: HTTP: HTTP/1.1 200 07:36:56.512553 IP xx.xx.xx.xx.53232 > slaveServer.webcache: Flags [P.], seq 2909077325:2909077700, ack 2040056900, win 229, options [nop,nop,TS val 3094009310 ecr 3091944374], length 375: HTTP: POST /path/process3 HTTP/1.1 07:37:27.209286 IP slaveServer.webcache > xx.xx.xx.xx.53232: Flags [.], seq 1:2577, ack 3557, win 300, options [nop,nop,TS val 3091975099 ecr 3094009310], length 2576: HTTP: HTTP/1.1 200 07:37:27.404865 IP xx.xx.xx.xx.53551 > slaveServer.webcache: Flags [P.], seq 1996723440:1996723817, ack 1343133109, win 229, options [nop,nop,TS val 3094040204 ecr 3091975267], length 377: HTTP: POST /path/process4 HTTP/1.1 07:37:28.932928 IP slaveServer.webcache > xx.xx.xx.xx.53551: Flags [.], seq 1:2577, ack 3548, win 300, options [nop,nop,TS val 3091976823 ecr 3094040204], length 2576: HTTP: HTTP/1.1 200 07:37:29.120056 IP xx.xx.xx.xx.53580 > slaveServer.webcache: Flags [P.], seq 1734970332:1734970711, ack 390079555, win 229, options [nop,nop,TS val *3094041920 ecr 3091976982], length 379: HTTP: POST /path/process5 HTTP/1.108:51:23.325430 IP slaveServer.webcache > xx.xx.xx.xx.53580: Flags [.], seq 1:2577, ack 5366, win 326, options [nop,nop,TS val 3096411215 ecr 3094041920], length 2576: HTTP: HTTP/1.1 20008:51:23.607888 IP slaveServer.webcache > xx.xx.xx.xx.53580: Flags [.], seq 1:1289, ack 5366, win 326, options [nop,nop,TS val 3096411498 ecr 3094041920], length 1288: HTTP: HTTP/1.1 20008:51:24.066861 IP slaveServer.webcache > xx.xx.xx.xx.53580: Flags [.], seq 1:1289, ack 5366, win 326, options [nop,nop,TS val 3096411957 ecr 3094041920], length 1288: HTTP: HTTP/1.1 20008:51:24.985860 IP slaveServer.webcache > xx.xx.xx.xx.53580: Flags [.], seq 1:1289, ack 5366, win 326, options [nop,nop,TS val 3096412876 ecr 3094041920], length 1288: HTTP: HTTP/1.1 20008:51:26.821888 IP slaveServer.webcache > xx.xx.xx.xx.53580: Flags [.], seq 1:1289, ack 5366, win 326, options [nop,nop,TS val 3096414712 ecr 3094041920], length 1288: HTTP: HTTP/1.1 20008:51:30.493846 IP slaveServer.webcache > xx.xx.xx.xx.53580: Flags [.], seq 1:1289, ack 5366, win 326, options [nop,nop,TS val 3096418384 ecr 3094041920], length 1288: HTTP: HTTP/1.1 20008:51:37.837868 IP slaveServer.webcache > xx.xx.xx.xx.53580: Flags [.], seq 1:1289, ack 5366, win 326, options [nop,nop,TS val 3096425728 ecr 3094041920], length 1288: HTTP: HTTP/1.1 20008:51:52.525862 IP slaveServer.webcache > xx.xx.xx.xx.53580: Flags [.], seq 1:1289, ack 5366, win 326, options [nop,nop,TS val 3096440416 ecr 3094041920], length 1288: HTTP: HTTP/1.1 20008:52:21.869807 IP slaveServer.webcache > xx.xx.xx.xx.53580: Flags [.], seq 1:1289, ack 5366, win 326, options [nop,nop,TS val 3096469760 ecr 3094041920], length 1288: HTTP: HTTP/1.1 200*
