Hello everyone, I am trying to use Squid as an ICAP client. I have moved to Squid-3.1.0.8 (latest beta release). I have noticed that some of the functionalities which worked for in Squid-3.0.Stable13 do not function as expected with this latest release (Squid-3.1.0.8). I made a debug build of squid and did a step through in the code to discover the problem. This issue was experienced when squid sends an ICAP reqmod request encapsulating a HTTP Post request to be sent an external server in the Internet and the ICAP Server responds back with an HTTP response (encapsulated in ICAP response) on behalf of external server. Loosely, it is equivalent of Example 3 in section 4.8.3 of RFC 3507. A step through in the build of Squid revealed that while parsing the received ICAP response, Squid was expecting an HTTP Request and not a HTTP Response (as sent by ICAP server on behalf of external server). Issue is seen when parseFirstLine() method (line 259 of HttpMsg.cc) is invoked in HttpMsg::httpMsgParseStep() method. Shouldn't there be a logic to check the first line of HTTP header and determine whether it should use HttpReply or HttpRequest class. I haven't developed a good knowledge to create a fix/patch for this issue. If any pro can provide some reference/guidance, then I can develop the fix. If you may need more information to help resolving this issue, then please send me an email. Regards, Shree