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From Henri Gomez <hgo...@apache.org>
Subject jk_connect and multi-threading
Date Mon, 12 Jul 2004 10:07:46 GMT
Hi to all,

I'm looking for a strange problem under iSeries (AS/400) and wonder
about this look in jk_open_socket() (jk_connect.c) :

         do {
             jk_log(l, JK_LOG_DEBUG, "jk_open_socket, try to connect 
socket = %d to %s\n",
                    sock, jk_dump_hinfo(addr, buf));

             ret = connect(sock,
                           (struct sockaddr *)addr,
                           sizeof(struct sockaddr_in));
#if defined(WIN32) || (defined(NETWARE) && defined(__NOVELL_LIBC__))
             if(SOCKET_ERROR == ret) {
                 errno = WSAGetLastError() - WSABASEERR;
             }
#endif /* WIN32 */
             jk_log(l, JK_LOG_DEBUG, "jk_open_socket, after connect ret 
= %d\n", ret);
         } while (-1 == ret && EINTR == errno);


What's the status on errno in multi-threaded environnement ?

Shouldn't we clear errno before the connect() call ?

BTW, I wonder why we check the errno in such case...


I see many errors in Apache 2.0.48 on my iSeries when I try to connect
to some workers (more than 40 defined) and it seems that some of them
couldn't be reached :

[Thu Jul 08 17:13:22 2004]  [jk_ajp_common.c (720)]: Error connecting to 
tomcat. Tomcat is probably not started or is listening o
n the wrong host/port (127.0.0.1:11013). Failed errno = 3021 

[Thu Jul 08 17:13:22 2004]  [jk_ajp_common.c (1024)]: Error connecting 
to the Tomcat process.
[Thu Jul 08 17:13:22 2004]  [jk_ajp_common.c (1468)]: sending request to 
tomcat failed in send loop. err=0
[Thu Jul 08 17:13:22 2004]  [jk_connect.c (181)]: jk_open_socket, 
connect() failed errno = 3021
[Thu Jul 08 17:13:22 2004]  [jk_ajp_common.c (720)]: Error connecting to 
tomcat. Tomcat is probably not started or is listening o
n the wrong host/port (127.0.0.1:11013). Failed errno = 3021 

[Thu Jul 08 17:13:22 2004]  [jk_ajp_common.c (1024)]: Error connecting 
to the Tomcat process.
[Thu Jul 08 17:13:22 2004]  [jk_ajp_common.c (1468)]: sending request to 
tomcat failed in send loop. err=1
[Thu Jul 08 17:13:22 2004]  [jk_connect.c (181)]: jk_open_socket, 
connect() failed errno = 3021
[Thu Jul 08 17:13:22 2004]  [jk_ajp_common.c (720)]: Error connecting to 
tomcat. Tomcat is probably not started or is listening o
n the wrong host/port (127.0.0.1:11013). Failed errno = 3021 

[Thu Jul 08 17:13:22 2004]  [jk_ajp_common.c (1024)]: Error connecting 
to the Tomcat process.
[Thu Jul 08 17:13:22 2004]  [jk_ajp_common.c (1468)]: sending request to 
tomcat failed in send loop. err=2
[Thu Jul 08 17:13:22 2004]  [jk_ajp_common.c (1477)]: Error connecting 
to tomcat. Tomcat is probably not started or is listening
on the wrong port. worker=mysys-xxx-101 failed errno = 3021 



What is strange is that there is a tomcat running at port 11013 and
I could reach it from another Apache 2 box.

The 3021 errcode is an iSeries error code which seems indicate something
not related with IP problems.

Advices, intutions, magic more than welcome.


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