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http://nagoya.apache.org/bugzilla/show_bug.cgi?id=7708 mod_proxy invalid HTTP version translation Summary: mod_proxy invalid HTTP version translation Product: Apache httpd-1.3 Version: 1.3.24 Platform: Other OS/Version: Other Status: NEW Severity: Normal Priority: Other Component: mod_proxy AssignedTo: bugs@httpd.apache.org ReportedBy: [EMAIL PROTECTED] This is a correction of a previous apparent bug lodged by myself that was causing invalid "Continue 100" responses. It turns out that mod_proxy 1.3.24 is upgrading HTTP/1.0 POST requests to HTTP/1.1 without downgrading in the reply. See below: Request sent by client to proxy/frontend: ------------------------------------------- POST /login.asp HTTP/1.0 Accept: image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, application/vnd.ms- excel, application/vnd.ms-powerpoint, application/msword, */* Accept-Language: en-au Content-Type: application/x-www-form-urlencoded User-Agent: Mozilla/4.0 (compatible; MSIE 5.5; Windows NT 5.0; T312461) Content-Length: 34 Pragma: no-cache Host: my.hostname.com Cache-Control: max-age=1329600 Connection: keep-alive username=xxxxxxx&password=xxxxxxxx ------------------------------------------- Passed by mod_proxy (1.3.23) - Works fine, normal HTTP response: ------------------------------------------- POST /login.asp HTTP/1.0 Host: my.hostname.com.internal Accept: image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, application/vnd.ms- excel, application/vnd.ms-powerpoint, application/msword, */* Accept-Language: en-au Cache-Control: max-age=1329600 Content-Length: 34 Content-Type: application/x-www-form-urlencoded Pragma: no-cache User-Agent: Mozilla/4.0 (compatible; MSIE 5.5; Windows NT 5.0; T312461) X-Forwarded-For: 210.23.128.130 Connection: close username=xxxxxxx&password=xxxxxxxx ------------------------------------------- HTTP request passed by mod_proxy (1.3.24) - Causes a Continue 100 with IIS: ------------------------------------------- POST /login.asp HTTP/1.1 Host: my.hostname.com.internal Accept: image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, application/vnd.ms- excel, application/vnd.ms-powerpoint, application/msword, */* Accept-Language: en-au Cache-Control: max-age=1329600 Content-Length: 34 Content-Type: application/x-www-form-urlencoded Pragma: no-cache User-Agent: Mozilla/4.0 (compatible; MSIE 5.5; Windows NT 5.0; T312461) X-Forwarded-For: 210.23.128.130 Connection: close username=xxxxxxx&password=xxxxxxxx ------------------------------------------- As far as I can see, this breaks HTTP/1.1 RFC: ----- 3.1 HTTP Version Proxy and gateway applications need to be careful when forwarding messages in protocol versions different from that of the application. Since the protocol version indicates the protocol capability of the sender, a proxy/gateway MUST NOT send a message with a version indicator which is greater than its actual version. If a higher version request is received, the proxy/gateway MUST either downgrade the request version, or respond with an error, or switch to tunnel behavior. -----
