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From bugzi...@apache.org
Subject DO NOT REPLY [Bug 40107] New: - JK should handle EAGAIN in jk_is_socket_connected()
Date Tue, 25 Jul 2006 02:43:24 GMT
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http://issues.apache.org/bugzilla/show_bug.cgi?id=40107

           Summary: JK should handle EAGAIN in jk_is_socket_connected()
           Product: Tomcat 5
           Version: 5.5.17
          Platform: HP
        OS/Version: HP-UX
            Status: NEW
          Severity: normal
          Priority: P2
         Component: Native:JK
        AssignedTo: tomcat-dev@jakarta.apache.org
        ReportedBy: jongjin.choe@gmail.com


I am using mod_jk 1.2.14 with SUN ONE web server 6.1 on HP-UX.

I found that this error message on mod_jk log file.
-------------------------------------------------------
[&#54868; 7&#50900; 19 15:27:55 2006] [16718:0016] [info]  jk_ajp_common.c (1178):
Socket 35
is not connected any more (errno=11)
[&#54868; 7&#50900; 19 15:27:55 2006] [16718:0016] [info]  jk_ajp_common.c (1202):
Error
sending request. Will try another pooled connection
[&#54868; 7&#50900; 19 15:27:55 2006] [16718:0016] [info]  jk_ajp_common.c (1178):
Socket 34
is not connected any more (errno=11)
[&#54868; 7&#50900; 19 15:27:55 2006] [16718:0016] [info]  jk_ajp_common.c (1202):
Error
sending request. Will try another pooled connection
[&#54868; 7&#50900; 19 15:27:55 2006] [16718:0016] [info]  jk_ajp_common.c (1225):
All
endpoints are disconnected or dead
-------------------------------------------------------------

Digging into mod_jk source code, jk_is_socket_connected() in jk_connect.c seems
 to have a problem.

In HP-UX, non-blocking read() would fail with errno 11 (EAGAIN) instead of
EWOULDBLOCK.

Reviewing errno.h and related files in several platforms, I found that
EWOULDBLOCK is same as EAGAIN in Linux, but NOT in HP-UX.
I feel that EAGAIN should be treated same as EWOULDBLOCK in
jk_is_socket_connected(). 

-- Jongjin

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