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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. 1.
    Open Proxyman -> Setup Menu -> Automatic Setup
  2. 2.
    Click on "Open New Terminal"
  3. 3.
    Accept the Apple Script permission prompt if needed
  4. 4.
    The New Terminal app is launched -> You can start your Ruby Backend Server, or Run scripts => Proxyman automatically captures all traffic.
  5. 5.
    Done ✅
Capture Traffic from Ruby

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