Hi experts,
I'm runnig Apache 2.2.3 on CentOS 4.4 with the following proxy settings:
#ProxyReverse Settings
ProxyRequests off
ProxyPass / http://172.22.1.15:8080/
ProxyPassReverse / http://172.22.1.15:8080/
The problem is that I get the following error for maybe 10% of the
connections.
"Proxy Error
The proxy server received an invalid response from an upstream server.
The proxy server could not handle the request GET /Default.aspx.
Reason: Error reading from remote server"
If I reload the page it works again...
See the debug output:
Not working:
[Fri Nov 03 21:06:23 2006] [debug] mod_proxy_http.c(54): proxy: HTTP:
canonicalising URL //172.22.1.15:8080/Login.aspx
[Fri Nov 03 21:06:23 2006] [debug] proxy_util.c(1378): [client
192.168.14.24] proxy: http: found worker http://172.22.1.15:8080/ for
http://172.22.1.15:8080/Login.aspx?ReturnUrl=%2fDefault.aspx,
referer: http://192.168.10.100/Login.aspx?ReturnUrl=%2fDefault.aspx
[Fri Nov 03 21:06:23 2006] [debug] mod_proxy.c(756): Running scheme
http handler (attempt 0)
[Fri Nov 03 21:06:23 2006] [debug] mod_proxy_http.c(1662): proxy:
HTTP: serving URL http://172.22.1.15:8080/Login.aspx?ReturnUrl=%
2fDefault.aspx
[Fri Nov 03 21:06:23 2006] [debug] proxy_util.c(1798): proxy: HTTP:
has acquired connection for (172.22.1.15)
[Fri Nov 03 21:06:23 2006] [debug] proxy_util.c(1858): proxy:
connecting http://172.22.1.15:8080/Login.aspx?ReturnUrl=%
2fDefault.aspx to 172.22.1.15:8080
[Fri Nov 03 21:06:23 2006] [debug] proxy_util.c(1951): proxy:
connected /Login.aspx?ReturnUrl=%2fDefault.aspx to 172.22.1.15:8080
[Fri Nov 03 21:06:23 2006] [debug] proxy_util.c(2141): proxy: HTTP:
connection complete to 172.22.1.15:8080 (172.22.1.15)
[Fri Nov 03 21:06:23 2006] [info] [client 172.22.1.15] (32)Broken
pipe: core_output_filter: writing data to the network
[Fri Nov 03 21:06:23 2006] [error] [client 192.168.14.24] proxy:
error reading status line from remote server 172.22.1.15, referer:
http://192.168.10.100/Login.aspx?ReturnUrl=%2fDefault.aspx
[Fri Nov 03 21:06:23 2006] [error] [client 192.168.14.24] proxy:
Error reading from remote server returned by /Login.aspx, referer:
http://192.168.10.100/Login.aspx?ReturnUrl=%2fDefault.aspx
[Fri Nov 03 21:06:23 2006] [debug] proxy_util.c(1816): proxy: HTTP:
has released connection for (172.22.1.15)
Working:
[Fri Nov 03 21:11:16 2006] [debug] mod_proxy_http.c(54): proxy: HTTP:
canonicalising URL //172.22.1.15:8080/Login.aspx
[Fri Nov 03 21:11:16 2006] [debug] proxy_util.c(1378): [client
192.168.14.24] proxy: http: found worker http://172.22.1.15:8080/ for
http://172.22.1.15:8080/Login.aspx?ReturnUrl=%2fDefault.aspx,
referer: http://192.168.10.100/Login.aspx?ReturnUrl=%2fDefault.aspx
[Fri Nov 03 21:11:16 2006] [debug] mod_proxy.c(756): Running scheme
http handler (attempt 0)
[Fri Nov 03 21:11:16 2006] [debug] mod_proxy_http.c(1662): proxy:
HTTP: serving URL http://172.22.1.15:8080/Login.aspx?ReturnUrl=%
2fDefault.aspx
[Fri Nov 03 21:11:16 2006] [debug] proxy_util.c(1798): proxy: HTTP:
has acquired connection for (172.22.1.15)
[Fri Nov 03 21:11:16 2006] [debug] proxy_util.c(1858): proxy:
connecting http://172.22.1.15:8080/Login.aspx?ReturnUrl=%
2fDefault.aspx to 172.22.1.15:8080
[Fri Nov 03 21:11:16 2006] [debug] proxy_util.c(1951): proxy:
connected /Login.aspx?ReturnUrl=%2fDefault.aspx to 172.22.1.15:8080
[Fri Nov 03 21:11:16 2006] [debug] proxy_util.c(2045): proxy: HTTP:
fam 2 socket created to connect to 172.22.1.15
[Fri Nov 03 21:11:16 2006] [debug] proxy_util.c(2141): proxy: HTTP:
connection complete to 172.22.1.15:8080 (172.22.1.15)
[Fri Nov 03 21:11:16 2006] [debug] mod_proxy_http.c(1448): proxy:
start body send
[Fri Nov 03 21:11:16 2006] [debug] mod_proxy_http.c(1537): proxy: end
body send
[Fri Nov 03 21:11:16 2006] [debug] proxy_util.c(1816): proxy: HTTP:
has released connection for (172.22.1.15)
From what I can see I get "Broken pipe: core_output_filter: ..."
when it goes wrong and I never get the "proxy: HTTP: fam 2 socket
created to connect to 172.22.1.15"
Can anybody help me figure out what the problem is??
Regards
MAD
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