Using Proxy to connect to URLs in Ruby
By: Emiley J. in Ruby Tutorials on 2009-03-03
Net::HTTP.Proxy creates http proxy class. It has same methods of Net::HTTP but its instances always connect to proxy, instead of given host.
require 'net/http' proxy_addr = 'your.proxy.host' proxy_port = 8080 : Net::HTTP::Proxy(proxy_addr, proxy_port).start('www.example.com') {|http| # always connect to your.proxy.addr:8080 : }
Since Net::HTTP.Proxy returns Net::HTTP itself when proxy_addr is nil, there's no need to change code if there"s proxy or not.
There are two additional parameters in Net::HTTP.Proxy which allow to specify proxy user name and password:
Net::HTTP::Proxy(proxy_addr, proxy_port, proxy_user = nil, proxy_pass = nil)
You may use them to work with authorization-enabled proxies:
require 'net/http' require 'uri' proxy_host = 'your.proxy.host' proxy_port = 8080 uri = URI.parse(ENV['http_proxy']) proxy_user, proxy_pass = uri.userinfo.split(/:/) if uri.userinfo Net::HTTP::Proxy(proxy_host, proxy_port, proxy_user, proxy_pass).start('www.example.com') {|http| # always connect to your.proxy.addr:8080 using specified username and password : }
Note that net/http never rely on HTTP_PROXY environment variable. If you want to use proxy, set it explicitly.
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