Capturing cURL Traffic

Some third-party tools like Curl don't use the OS system proxy by default. How can I intercept the traffic generated from Curl or similar applications?

Solution

When executing a request that needs to be captured by Fiddler through cURL, use the optional -x parameter to pass the Fiddler Everywhere proxy. The ssl-no-revoke option invokes or causes cURL to disable certificate revocation checks. The -v parameter shows verbose logs after the command is executed.

curl --url https://www.example.com/ -x 127.0.0.1:8866 --ssl-no-revoke -v

Alternatively, you can set the proxy settings for your terminal application, which runs the cURL application, to use the Fiddler Everywhere proxy.