Viewing HTTP or HTTPS traffic with “Charles Proxy” that is not displayed behind the code of a Ruby program.


Showing this information will help diagnoise what is being sent to the remote end-point.


  1. Install Charles Proxy
  2. Save the RootCA certificate from Charles Proxy
  3. Point the environment variable called “SSL_CERT_FILE” to the saved file
  export SSL_CERT_FILE="/Users/aa5d2e3/certs/charles-ssl-proxying-certificate.pem"
  1. Poing the environment variable called “http_proxy” to “http://localhost:8888”
  export http_proxy="http://localhost:8888"
  1. Once done, launch Charles Proxy and execute your Ruby script

If the icon for the end-point is a “pad-lock” this indicates you need to enable SSL Proxying. Right click on the hostname of the end-point in the structure list and choose to enable SSL Proxying.

You should now see a new end-point be created with a blue sphere (not a pad lock) and you can now dig down to see all the calles and data returns from the end-point!

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