HTTPS HTTP POST client-body-tagger HTTP/1.1 200 OK Connection: close Content-Type: text/html X-Connection: swsclose Received your input. HTTP/1.1 200 Connection established HTTP/1.1 200 OK Connection: close Content-Type: text/html X-Connection: swsclose Received your input. https Two requests to the same URL. The second one is a POST request with an offending word but it's too large to buffer and tag so it gets to pass. (XXX: Privoxy could execute the tagger based on the data that fits into the buffer) proxy -s --write-out '%{stderr}%{response_code}\n' --insecure https://%HOSTIP:%HTTPSPORT/%TESTNUMBER --next -d @log/post-data-%TESTNUMBER -s --write-out '%{stderr}%{response_code}\n' --insecure https://%HOSTIP:%HTTPSPORT/%TESTNUMBER blafasel%repeat[20000 x padding]% GET /%TESTNUMBER HTTP/1.1 Host: %HOSTIP:%HTTPSPORT User-Agent: curl/%VERSION Accept: */* POST /%TESTNUMBER HTTP/1.1 Host: %HOSTIP:%HTTPSPORT User-Agent: curl/%VERSION Accept: */* Content-Length: 140008 Content-Type: application/x-www-form-urlencoded blafasel%repeat[20000 x padding]% 200 200