Cannot migrate to 4.0.3

Hi, we are trying to migrate from proxy 3.6.SP5 to 4.0.3 and have this problem:

The same url works in 3.6 and fail in 4.0.3

In 3.6.5:

(access log)

10.0.135.86 - - [22/Feb/2007:09:41:21 +0100] "GET http://194.224.196.17:9805/ HTTP/1.0" 200 7 0.384 0 0 0.024 0.024

10.0.83.168 - - [22/Feb/2007:11:15:14 +0100] "GET http://194.224.196.17:9805/ HTTP/1.1" 200 7 0.548 0 0 0.037 0.037

in 4.0.3:

(access log)

10.0.135.86 - - [22/Feb/2007:10:37:12 +0100] "GET http://194.224.196.17:9805/ HTTP/1.0" 502 7 108 0 81 25 26

10.0.83.168 - - [22/Feb/2007:11:14:50 +0100] "GET http://194.224.196.17:9805/ HTTP/1.1" 502 7 286 0 124 146 162

(Errors log)

[22/Feb/2007:10:37:12] failure (15006): for host 10.0.135.86 trying to GET http://194.224.196.17:9805/, service-http reports: HTTP7756: received invalid response header

[22/Feb/2007:11:14:50] failure (15006): for host 10.0.83.168 trying to GET http://194.224.196.17:9805/, service-http reports: HTTP7756: received invalid response header

[1052 byte] By [cesar.riveroa] at [2007-11-26 19:17:17]
# 1

I am using version 4.0.4 and I see lots of messages like this.

"HTTP7756: received invalid response header"

(1) Anyone can explain the meaning of this message. Or point me to the docs.sun.com in order to see a "error messages list".

(2) Is there any specific configuration to look for in order to avoid these messages.

Thanks in advance.

frank.castrilloa at 2007-7-9 21:31:18 > top of Java-index,Web & Directory Servers,Web Servers...
# 2

Proxy 4.0 is much more "stricter" than Proxy 3.6 which accepts and forwards a lot

of "eccentric" requests/responses, and this is a good thing from the point of view of

security. So it's quite possible that such eccentric clients/servers stop working with

an installation that has been migrated to 4.0.

motora at 2007-7-9 21:31:18 > top of Java-index,Web & Directory Servers,Web Servers...