Capture HTTP/HTTPS Traffic from Ruby with Proxyman

1. New Automatic Solution (v4.7.0 or later) ✅

Proxyman v4.7.0 or later can capture HTTP/HTTPS traffic from Ruby with 1-click.

  • 1-click solution: No need to manually set HTTP Proxy config or trust the self-signed certificate.

  • Support many Ruby libraries: http, net/http, net/https, httparty, and faraday.

How to use:

  1. Open Proxyman -> Setup Menu -> Automatic Setup

  2. Click on "Open New Terminal"

  3. Accept the Apple Script permission prompt if needed

  4. The New Terminal app is launched -> You can start your Ruby Backend Server, or Run scripts => Proxyman automatically captures all traffic.

  5. Done ✅

1. Set HTTP Proxy to Ruby

Net::HTTP will automatically create a proxy from the http_proxy environment variable if it is present.

So you can use:

ENV['http_proxy'] = '' # your http://address:port here

and Net::HTTP will use it for all requests by default.


2. Install Proxyman Certificate on Ruby

By default, Ruby on macOS might not trust Proxyman's self-signed certificate. As a result, you might encounter SSL Error if you try to intercept HTTPS traffic.

You can explicitly tell Ruby to use Proxyman Certificate by using SSL_CERT_FILE env.

$ env SSL_CERT_FILE=~/.proxyman/proxyman-ca.pem ruby my_script.rb

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