We have tomcat 5.0 connected through IIS (windows 2000) and the isapi redirector version 1.2.14. After running for a while with a high number of concurrent users, the log below appears in the log of the jk redirector.

Any suggestions on how to tackle this problem, or find out what might cause it are more than welcome.

Thanks in advance for your help,
Sander Rijken

Here's a snip from our log, as you can see, no requests between 10:00 and 10:47, because everything was dead. At 10:47 the server was restarted.

[Wed Oct 26 10:00:40 2005] [info] ajp_send_request::jk_ajp_common.c (1178): Socket 4512 is not connected any more (errno=-1) [Wed Oct 26 10:00:40 2005] [info] ajp_send_request::jk_ajp_common.c (1202): Error sending request. Will try another pooled connection [Wed Oct 26 10:00:40 2005] [info] ajp_send_request::jk_ajp_common.c (1178): Socket 2868 is not connected any more (errno=-1) [Wed Oct 26 10:00:40 2005] [info] ajp_send_request::jk_ajp_common.c (1202): Error sending request. Will try another pooled connection [Wed Oct 26 10:00:40 2005] [info] ajp_send_request::jk_ajp_common.c (1225): All endpoints are disconnected or dead [Wed Oct 26 10:00:40 2005] [info] ajp_service::jk_ajp_common.c (1749): Sending request to tomcat failed, recoverable operation attempt=1 [Wed Oct 26 10:47:55 2005] [error] start_response::jk_isapi_plugin.c (535): HSE_REQ_SEND_RESPONSE_HEADER failed [Wed Oct 26 10:47:55 2005] [error] write::jk_isapi_plugin.c (625): WriteClient failed with 00002746 [Wed Oct 26 10:47:55 2005] [info] ajp_process_callback::jk_ajp_common.c (1384): Connection aborted or network problems [Wed Oct 26 10:47:55 2005] [info] ajp_service::jk_ajp_common.c (1731): Receiving from tomcat failed, because of client error without recovery in send loop 0 [Wed Oct 26 10:47:55 2005] [info] service::jk_lb_worker.c (677): unrecoverable error 400, request failed. Client failed in the middle of request, we can't recover to another instance. [Wed Oct 26 11:23:10 2005] [error] write::jk_isapi_plugin.c (625): WriteClient failed with 00002746 [Wed Oct 26 11:23:10 2005] [info] ajp_process_callback::jk_ajp_common.c (1384): Connection aborted or network problems [Wed Oct 26 11:23:10 2005] [info] ajp_service::jk_ajp_common.c (1731): Receiving from tomcat failed, because of client error without recovery in send loop 0 [Wed Oct 26 11:23:10 2005] [info] service::jk_lb_worker.c (677): unrecoverable error 400, request failed. Client failed in the middle of request, we can't recover to another instance.

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