Hi all,
I am trying to setup a reverse proxy to transfer data based on soap. Let's say we have three machines:
a --- client
b --- reverse proxy server with apache 2.2.0 installed
c --- data provider using mod_gsoap.dll, provide a soap envelope with data inside.
In b, I only made following change to http.conf:
Enable following lines ---
LoadModule headers_module modules/mod_headers.so
LoadModule deflate_module modules/mod_deflate.so
LoadModule proxy_module modules/mod_proxy.so
LoadModule proxy_http_module modules/mod_proxy_http.so
LoadModule proxy_ftp_module modules/mod_proxy_ftp.so
LoadModule proxy_connect_module modules/mod_proxy_connect.so
Add following lines in the end ---
ProxyRequests Off
<Proxy *>
Order deny,allow
Allow from all
</Proxy>
ProxyPass /RPTest/ http://192.168.2.100/gsoap/
I have three scenarios:
Scenario 1 --- c provides uncompressed data
Scenario 2 --- c provides gzip-compressed chunk data
Scenario 3 --- c provides gzip-compressed unchunk data
In
both scenario 1 and 2, client can receive data well. However, in
scenario 3, client can not receive data. Therefore, I tried to compare
scenario 2 and 3 on soap envelope sent by c and soap envelope received
by a. For data sent by c, scenario 2 has a hex number right before the
compressed binary block, while scenario 3 does not have. Seems this hex
number is length of binary block. For data recieved by a, in scenario
3, a received compressed data with content-length 0.
I wonder if
apache http server in b tries to interpret soap content and get no
content-length, then apache puts some content-length=0 to repsonse
header. In fact, I only need b works as a bridge, simply transfering
whatever from c to a without any modification.
Is my problem
caused by apache modifying content-length in response header? Is there
any way to make apache only pass through data from c just as is?
Thanks,
Enping
