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Posted to bugs@httpd.apache.org by bu...@apache.org on 2008/07/31 06:37:01 UTC
DO NOT REPLY [Bug 45510] New: Apache2.2.9 with mod_proxy: Connection
reset by peer
https://issues.apache.org/bugzilla/show_bug.cgi?id=45510
Summary: Apache2.2.9 with mod_proxy: Connection reset by peer
Product: Apache httpd-2
Version: 2.2.9
Platform: PC
OS/Version: Linux
Status: NEW
Severity: normal
Priority: P2
Component: mod_proxy
AssignedTo: bugs@httpd.apache.org
ReportedBy: yneko@yamamaya.com
I have a backend server(windows) and a reverse proxy(apache 2.2.9). It works
almost well, but sometimes cause "Proxy error".
I found some error log that may be relating to this problem.
[Thu Jul 31 11:58:45 2008] [error] [client xxx.xxx.xxx.xxx] (104)Connection
reset by peer: proxy: error reading status line from remote server
192.168.1.100, referer: http://example.com/apps/
[Thu Jul 31 11:58:45 2008] [error] [client xxx.xxx.xxx.xxx] proxy: Error
reading from remote server returned by /example.gif, referer:
http://example.com/apps/
and the config is here;
ProxyRequests Off
<Location /apps/>
ProxyPass http://192.168.1.100/
ProxyPassReverse http://192.168.1.100/
</Location>
I have investigated the cause, and I think this problem happens right after the
backend server closes connections by keep-alive timeout.
Is there any way to solve this problem?
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DO NOT REPLY [Bug 45510] Apache2.2.9 with mod_proxy: Connection
reset by peer
Posted by bu...@apache.org.
https://issues.apache.org/bugzilla/show_bug.cgi?id=45510
--- Comment #5 from Mao Morimoto <yn...@yamamaya.com> 2008-07-31 04:52:26 PST ---
(In reply to comment #4)
> What is your backend server? An IIS?
Yes, an IIS, maybe Windows 2003 Server.
The backend works normally. No error occurs when accessing directly.
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DO NOT REPLY [Bug 45510] Apache2.2.9 with mod_proxy: Connection
reset by peer
Posted by bu...@apache.org.
https://issues.apache.org/bugzilla/show_bug.cgi?id=45510
Mao Morimoto <yn...@yamamaya.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEEDINFO |ASSIGNED
--- Comment #3 from Mao Morimoto <yn...@yamamaya.com> 2008-07-31 00:13:36 PST ---
(In reply to comment #2)
OK, Here is the debug log;
Here is the debug log;
## the previous access (success)
[Thu Jul 31 15:48:31 2008] [debug] proxy_util.c(2102): proxy: connecting
http://192.168.1.100/example.gif to 192.168.1.100:80
[Thu Jul 31 15:48:31 2008] [debug] proxy_util.c(2195): proxy: connected
/example.gif to 192.168.1.100:80
[Thu Jul 31 15:48:31 2008] [debug] mod_proxy_http.c(1779): proxy: header only
[Thu Jul 31 15:48:31 2008] [debug] proxy_util.c(2062): proxy: HTTP: has
released connection for (192.168.1.100)
[Thu Jul 31 15:48:31 2008] [info] [client xxx.xxx.xxx.xxx] Connection closed to
child 3 with unclean shutdown (server example.com:443)
... wait 3 minutes to the backend server gets keep-alive timeouts ...
## now all connections to the backend has been closed by peer.
## try to access again
[Thu Jul 31 15:51:29 2008] [info] [client xxx.xxx.xxx.xxx] Connection to child
4 established (server example.com:443)
[Thu Jul 31 15:51:29 2008] [info] Seeding PRNG with 144 bytes of entropy
[Thu Jul 31 15:51:29 2008] [debug] ssl_engine_kernel.c(1752): OpenSSL:
Handshake: start
... long long SSL related log ...
[Thu Jul 31 15:51:29 2008] [info] Initial (No.1) HTTPS request received for
child 4 (server example.com:443)
[Thu Jul 31 15:51:29 2008] [debug] mod_proxy_http.c(56): proxy: HTTP:
canonicalising URL //192.168.1.100/example.gif
[Thu Jul 31 15:51:29 2008] [debug] proxy_util.c(1488): [client xxx.xxx.xxx.xxx]
proxy: http: found worker http://192.168.1.100/ for
http://192.168.1.100/example.gif
[Thu Jul 31 15:51:29 2008] [debug] mod_proxy.c(966): Running scheme http
handler (attempt 0)
[Thu Jul 31 15:51:29 2008] [debug] mod_proxy_http.c(1909): proxy: HTTP: serving
URL http://192.168.1.100/example.gif
[Thu Jul 31 15:51:29 2008] [debug] proxy_util.c(2044): proxy: HTTP: has
acquired connection for (192.168.1.100)
[Thu Jul 31 15:51:29 2008] [debug] proxy_util.c(2102): proxy: connecting
http://192.168.1.100/example.gif to 192.168.1.100:80
[Thu Jul 31 15:51:29 2008] [debug] proxy_util.c(2195): proxy: connected
/example.gif to 192.168.1.100:80
[Thu Jul 31 15:51:29 2008] [error] [client xxx.xxx.xxx.xxx] (104)Connection
reset by peer: proxy: error reading status line from remote server
192.168.1.100
[Thu Jul 31 15:51:29 2008] [debug] mod_proxy_http.c(1415): [client
xxx.xxx.xxx.xxx] proxy: NOT Closing connection to client although reading from
backend server 192.168.1.100 failed.
[Thu Jul 31 15:51:29 2008] [error] [client xxx.xxx.xxx.xxx] proxy: Error
reading from remote server returned by /apps/example.gif
[Thu Jul 31 15:51:29 2008] [debug] proxy_util.c(2062): proxy: HTTP: has
released connection for (192.168.1.100)
[Thu Jul 31 15:51:29 2008] [info] [client xxx.xxx.xxx.xxx] Connection closed to
child 4 with unclean shutdown (server example.com:443)
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DO NOT REPLY [Bug 45510] Apache2.2.9 with mod_proxy: Connection
reset by peer
Posted by bu...@apache.org.
https://issues.apache.org/bugzilla/show_bug.cgi?id=45510
--- Comment #1 from Mao Morimoto <yn...@yamamaya.com> 2008-07-30 22:29:46 PST ---
It seems the problem happens more frequently when using with SSL.
i.e.
Backend server(HTTP) <==> (TTTP)Proxy(HTTPS) <==> (HTTPS)Browser
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DO NOT REPLY [Bug 45510] Apache2.2.9 with mod_proxy: Connection
reset by peer
Posted by bu...@apache.org.
https://issues.apache.org/bugzilla/show_bug.cgi?id=45510
--- Comment #4 from Ruediger Pluem <rp...@apache.org> 2008-07-31 03:35:30 PST ---
What is your backend server? An IIS?
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DO NOT REPLY [Bug 45510] Apache2.2.9 with mod_proxy: Connection
reset by peer
Posted by bu...@apache.org.
https://issues.apache.org/bugzilla/show_bug.cgi?id=45510
Ruediger Pluem <rp...@apache.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |NEEDINFO
--- Comment #2 from Ruediger Pluem <rp...@apache.org> 2008-07-30 22:58:05 PST ---
Please set the loglevel to debug and share the results.
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DO NOT REPLY [Bug 45510] Apache2.2.9 with mod_proxy: Connection
reset by peer
Posted by bu...@apache.org.
https://issues.apache.org/bugzilla/show_bug.cgi?id=45510
Ruediger Pluem <rp...@apache.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution| |DUPLICATE
--- Comment #6 from Ruediger Pluem <rp...@apache.org> 2008-07-31 13:14:59 PST ---
*Sigh*. This looks like a resurrection of the famous PR3770. Thus I will mark
this bug as a duplicate of PR 37770. We should continue our discussion there.
Can you please setup a network sniffer and sniff port 80 and IP 192.168.1.100
between your reverse proxy and you backend while reproducing the bug?
*** This bug has been marked as a duplicate of bug 37770 ***
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