chef

https://github.com/opscode/chef

Ruby

A systems integration framework, built to bring the benefits of configuration management to your entire infrastructure.

WEBrick::Utils#create_listeners

Creates TCP server sockets bound to +address+:+port+ and returns them.

It will create IPV4 and IPV6 sockets on all interfaces.

NOTE: We need to monkey patch this method because
create_listeners on Windows with Ruby > 2.0.0 does not
raise an error if we're already listening on a port.

Source | Google | Stack overflow

Edit

git clone [email protected]:opscode/chef.git

cd chef

open lib/chef/monkey_patches/webrick-utils.rb

Contribute

# Make a new branch

git checkout -b -your-name--update-docs-WEBrick--Utils-create_listeners-for-pr

# Commit to git

git add lib/chef/monkey_patches/webrick-utils.rbgit commit -m "better docs for WEBrick::Utils#create_listeners"

# Open pull request

gem install hub # on a mac you can `brew install hub`

hub fork

git push <your name> -your-name--update-docs-WEBrick--Utils-create_listeners-for-pr

hub pull-request

# Celebrate!