Lighttpd

Please attach a strace (see wiki -> how to report a bug) showing the behaviour.

I have attached a strace of me requesting the file /css/style.css?2 which takes about 5 seconds to load.

As this is running on my development machine, I have lighty configured to run as serveral servers in one by the use of $SERVERsocket. So when proxy requests come in, its actually serving from the same server process.

I've now broken up my setup into separate processes so lighty isn't running everything in one go. Hopefully this is has given you a more clear strace.

From watching the strace as I request the file, the following seems to happen:

- Client request /img/logo1.gif
- Lighty forwards request through mod_proxy_core to another server
- That server immediately responds with 304 status
- Lighty does nothing for 4 seconds before returning 304 to the client

Thanks.

I've done some testing and found the problem to occur after the changes made in changeset 1949.

When requesting a file through my mod_proxy_core setup an additional header is returned, "Transfer-Encoding: chunked" along with the request hanging for about 5 seconds.

When requesting a file directly from the backend server and not via the proxy, it is returned instantly without the "Transfer-Encoding: chunked" header.

'''Here is the problem occuring after changeset [http://trac.lighttpd.net/trac/changeset/1949 1949] and requesting via the load balanced proxy (bug version)'''

curl -v -H "If-Modified-Since: Sun, 01 Jan 2036 00:00:02 GMT" http://alpha.mingleville.com/robots.txt
* About to connect() to alpha.mingleville.com port 80
*   Trying 10.0.0.31... * connected
* Connected to alpha.mingleville.com (10.0.0.31) port 80
> GET /robots.txt HTTP/1.1
User-Agent: curl/7.12.1 (i686-redhat-linux-gnu) libcurl/7.12.1 OpenSSL/0.9.7a zlib/1.2.1.2 libidn/0.5.6
Host: alpha.mingleville.com
Pragma: no-cache
Accept: */*
If-Modified-Since: Sun, 01 Jan 2036 00:00:02 GMT

< HTTP/1.1 304 Not Modified
< Content-Type: text/plain
< ETag: "61981870" 
< Accept-Ranges: bytes
< Last-Modified: Fri, 09 Nov 2007 12:00:38 GMT
< Date: Fri, 09 Nov 2007 14:48:49 GMT
< Server: lighttpd
< Transfer-Encoding: chunked
* Connection #0 to host alpha.mingleville.com left intact
* Closing connection #0

'''Here is the output when using changeset 1948 or 2019 with the block of code removed from response.c (working version)'''

curl -v -H "If-Modified-Since: Sun, 01 Jan 2036 00:00:02 GMT" http://alpha.mingleville.com/robots.txt
* About to connect() to alpha.mingleville.com port 80
*   Trying 10.0.0.31... * connected
* Connected to alpha.mingleville.com (10.0.0.31) port 80
> GET /robots.txt HTTP/1.1
User-Agent: curl/7.12.1 (i686-redhat-linux-gnu) libcurl/7.12.1 OpenSSL/0.9.7a zlib/1.2.1.2 libidn/0.5.6
Host: alpha.mingleville.com
Pragma: no-cache
Accept: */*
If-Modified-Since: Sun, 01 Jan 2036 00:00:02 GMT

< HTTP/1.1 304 Not Modified
< Content-Type: text/plain
< ETag: "61981870" 
< Accept-Ranges: bytes
< Last-Modified: Fri, 09 Nov 2007 12:00:38 GMT
< Date: Fri, 09 Nov 2007 14:23:11 GMT
< Server: lighttpd
< Content-Length: 0
* Connection #0 to host alpha.mingleville.com left intact
* Closing connection #0

#1178