diff --git a/lib/ethereum/http_client.rb b/lib/ethereum/http_client.rb
index b8a214d..bf8e869 100644
--- a/lib/ethereum/http_client.rb
+++ b/lib/ethereum/http_client.rb
@@ -1,13 +1,15 @@
 require 'net/http'
 module Ethereum
   class HttpClient < Client
-    attr_accessor :host, :port, :uri, :ssl
+    attr_accessor :host, :port, :uri, :ssl, :cookie
 
-    def initialize(host, port, ssl = false, log = false)
+    def initialize(host, port, ssl = false, log = false, cookie = false)
       super(log)
       @host = host
       @port = port
       @ssl = ssl
+      @use_cookie = cookie
+      @cookie = nil
       if ssl
         @uri = URI("https://#{@host}:#{@port}")
       else
@@ -21,14 +23,28 @@ def send_single(payload)
         http.use_ssl = true
       end
       header = {'Content-Type' => 'application/json'}
+      if @use_cookie && @cookie.present?
+        header['Cookie'] = @cookie
+      end
       request = ::Net::HTTP::Post.new(uri, header)
       request.body = payload
       response = http.request(request)
+      if @use_cookie
+	set_cookie_headers = response.get_fields('set-cookie')
+	if set_cookie_headers.present?
+	  @cookie = set_cookie_headers.map{|str| str.split('; ').first}.join('; ')
+	end
+      end
       return response.body
     end
 
     def send_batch(batch)
-      raise NotImplementedError
+      result = send_single(batch.to_json)
+      result = JSON.parse(result)
+
+      # Make sure the order is the same as it was when batching calls
+      # See 6 Batch here http://www.jsonrpc.org/specification
+      return result.sort_by! { |c| c['id'] }  
     end
   end