Allow binding the whois TCP socket to a specific IP address

lib/whois.rb

@@ -35,6 +35,7 @@ module Whois
   # ==== Parameters
   #
   # qstring:: The String to be sent as query parameter.
+  # options:: Options passed to the server adapter.
   #
   # ==== Returns
   #
@@ -50,8 +51,8 @@ module Whois
   #   Whois::Client.new.query("google.com")
   #   # => #<Whois::Answer>
   #
-  def self.query(qstring)
-    Client.new.query(qstring)
+  def self.query(qstring, options = { })
+    Client.new.query(qstring, options)
   end
 
   # Checks whether the object represented by <tt>qstring</tt> is available.
@@ -126,8 +127,8 @@ def self.registered?(qstring)
 
 
   # See <tt>Whois#query</tt>.
-  def self.whois(qstring)
-    query(qstring)
+  def self.whois(qstring, options = { })
+    query(qstring, options)
   end
 
 

lib/whois/client.rb

@@ -72,10 +72,12 @@ def initialize(options = {}, &block)
     #   client.query("google.com")
     #   # => #<Whois::Answer>
     #
-    def query(qstring)
+    def query(qstring, options = { })
       string = qstring.to_s
       Timeout::timeout(timeout) do
         @server = Server.guess(string)
+        # for some reason, a few tests fail without the respond_to? check
+        @server.options.merge!(options) if @server.respond_to?(:options)
         @server.query(string)
       end
     end

lib/whois/server/adapters/base.rb

@@ -123,7 +123,7 @@ def query_the_socket(qstring, host, port = nil)
         private
 
           def ask_the_socket(qstring, host, port)
-            client = TCPSocket.open(host, port)
+            client = TCPSocket.open(host, port, options[:bind_address])
             client.write("#{qstring}\r\n")  # I could use put(foo) and forget the \n
             client.read                     # but write/read is more symmetric than puts/read
           ensure                            # and I really want to use read instead of gets.