$ telnet 192.168.1.22 8080
Trying 192.168.1.22...
Connected to 192.168.1.22.
Escape character is '^]'.
GET 192.168.1.2/.../1.1
Host: 192.168.1.2
GET 192.168.1.2/.../1.1
Host: 192.168.1.2
HTTP/1.1 200 OK
Date: Fri, 26 Dec 2014 19:59:05 GMT
Server: Apache
Last-Modified: Fri, 26 Dec 2014 19:24:08 GMT
Accept-Ranges: bytes
Content-Length: 6
X-Frame-Options: deny
Keep-Alive: timeout=5, max=100
Content-Type: text/plain
Proxy-Connection: Keep-Alive
test1
HTTP/1.1 200 OK
Date: Fri, 26 Dec 2014 19:59:05 GMT
Server: Apache
Last-Modified: Fri, 26 Dec 2014 19:24:12 GMT
Accept-Ranges: bytes
Content-Length: 6
X-Frame-Options: deny
Keep-Alive: timeout=5, max=99
Content-Type: text/plain
Proxy-Connection: Keep-Alive
test2
^]
telnet> q
Connection closed.
In 9.3 (tested on 9.304-9 and 9.305-4), HTTP proxy processes only the first request and times out after one minute:
$ telnet 192.168.1.22 8080
Trying 192.168.1.22...
Connected to 192.168.1.22.
Escape character is '^]'.
GET 192.168.1.2/.../1.1
Host: 192.168.1.2
GET 192.168.1.2/.../1.1
Host: 192.168.1.2
HTTP/1.1 200 OK
Date: Fri, 26 Dec 2014 20:11:57 GMT
Server: Apache
Last-Modified: Fri, 26 Dec 2014 19:24:08 GMT
Accept-Ranges: bytes
Content-Length: 6
X-Frame-Options: deny
Keep-Alive: timeout=5, max=100
Content-Type: text/plain
Proxy-Connection: keep-alive
test1
Connection closed by foreign host.
The second request is neither processed nor logged in /var/log/http.log.
Real world scenario affected by this bug is Debian apt configured to pipeline requests (by default in squeeze).
Maybe something to do with changes in ID31116.
Brgds,
Ondrej
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