When I use intercept requests in Fiddler, I can inspect CONNECT tunnels. But when I try to issue request from Fiddler's composer, there is no CONNECT session. Is it possible to inspect CONNECTs when issuing requests from Composer?

CodePudding user response：

CONNECT is a special protocol command that is only used in combination with a http proxy. If a proxy receives a CONNECT command from the client this means "please establish a connection to the endpoint included in the CONNECT command".

If you use Fiddler composer the request is sent directly to the server without using Fiddler as a proxy. Thus you won't see a CONNECT command. If you want to see a CONNECT request then you have to use an external tool that uses Fiddler as https proxy.