HTTP HTTP CONNECT HTTP proxy proxytunnel # Server-side HTTP/1.1 405 Method Not Allowed swsclose And you should ignore this data. # Client-side http HTTP proxy CONNECT with custom User-Agent header http://test.remote.example.com.287:%HTTPPORT/path/287 -H "User-Agent: looser/2015" --proxy http://%HOSTIP:%HTTPPORT --proxytunnel --proxy-header "User-Agent: looser/2007" # Verify data after the test has been "shot" CONNECT test.remote.example.com.287:%HTTPPORT HTTP/1.1 Host: test.remote.example.com.287:%HTTPPORT Proxy-Connection: Keep-Alive User-Agent: looser/2007 # CURLE_RECV_ERROR 56 HTTP/1.1 405 Method Not Allowed swsclose