Gist for http_proxy of card [MSYS-721]

http_proxy.diff

diff --git a/lib/kitchen/transport/ssh.rb b/lib/kitchen/transport/ssh.rb
index bc836e1..b315b61 100644
--- a/lib/kitchen/transport/ssh.rb
+++ b/lib/kitchen/transport/ssh.rb
@@ -21,6 +21,7 @@ require "kitchen"
 require "fileutils"
 require "net/ssh"
 require "net/ssh/gateway"
+require "net/ssh/proxy/http"
 require "net/scp"
 require "timeout"
 require "benchmark"
@@ -55,6 +56,11 @@ module Kitchen
       default_config :ssh_gateway, nil
       default_config :ssh_gateway_username, nil
 
+      default_config :kitchen_ssh_proxy, nil
+      default_config :http_proxy_port, nil
+      default_config :http_proxy_user, nil
+      default_config :http_proxy_password, nil
+
       default_config :ssh_key, nil
       expand_path_for :ssh_key
 
@@ -154,6 +160,14 @@ module Kitchen
             # Should support other ports than 22 for ssh gateways
             args += %W{ -o ProxyCommand=#{gateway_command} -p 22 }
           end
+          if kitchen_ssh_proxy
+            if http_proxy_user && http_proxy_password
+              http_proxy_command = "ncat --proxy #{kitchen_ssh_proxy} --proxy-type http --proxy-auth #{http_proxy_user}:#{http_proxy_password} %h %p"
+            else
+              http_proxy_command = "ncat --proxy #{kitchen_ssh_proxy} --proxy-type http %h %p"
+            end
+            args += %W{ -o ProxyCommand=#{http_proxy_command} }
+          end
           Array(options[:keys]).each { |ssh_key| args += %W{ -i #{ssh_key} } }
           args += %W{ -p #{port} }
           args += %W{ #{username}@#{hostname} }
@@ -271,6 +285,26 @@ module Kitchen
         # @api private
         attr_reader :ssh_gateway_username
 
+        # @return [String] The kitchen ssh proxy to use when connecting to the
+        #   remote SSH host via http proxy
+        # @api private
+        attr_reader :kitchen_ssh_proxy
+
+        # @return [String] The port to use when using an kitchen ssh proxy
+        #   remote SSH host via http proxy
+        # @api private
+        attr_reader :http_proxy_port
+
+        # @return [String] The username to use when using an kitchen ssh proxy
+        #   remote SSH host via http proxy
+        # @api private
+        attr_reader :http_proxy_user
+
+        # @return [String] The password to use when using an kitchen ssh proxy
+        #   remote SSH host via http proxy
+        # @api private
+        attr_reader :http_proxy_password
+
         # Establish an SSH session on the remote host using a gateway host.
         #
         # @param opts [Hash] retry options
@@ -380,6 +414,10 @@ module Kitchen
           @max_wait_until_ready   = @options.delete(:max_wait_until_ready)
           @ssh_gateway            = @options.delete(:ssh_gateway)
           @ssh_gateway_username   = @options.delete(:ssh_gateway_username)
+          @kitchen_ssh_proxy      = @options.delete(:kitchen_ssh_proxy)
+          @http_proxy_user        = @options.delete(:http_proxy_user)
+          @http_proxy_password    = @options.delete(:http_proxy_password)
+          @http_proxy_port        = @options.delete(:http_proxy_port)
         end
 
         # Returns a connection session, or establishes one when invoked the
@@ -446,6 +484,13 @@ module Kitchen
           opts[:auth_methods] = ["publickey"]
         end
 
+        if data[:kitchen_ssh_proxy]
+          options_http_proxy = {}
+          options_http_proxy[:user] = data[:http_proxy_user]
+          options_http_proxy[:password] = data[:http_proxy_password]
+          opts[:proxy] = Net::SSH::Proxy::HTTP.new("#{data[:kitchen_ssh_proxy]}", data[:http_proxy_port], options_http_proxy)
+        end
+
         if data[:ssh_key_only]
           opts[:auth_methods] = ["publickey"]
         end