Get us free proxies for ruby.
# from gem
gem 'nx-us-proxy'
# from git
gem 'nx-us-proxy', git: 'git@github.com:afeiship/nx-us-proxy.git'
Nx::UsProxy::fetch
# result
[
{
:ip=>"138.197.74.25",
:port=>"8118"
},
{
:ip=>"167.172.17.86",
:port=>"3128"
}
# ...
]