Added req.host

lib/request.js

@@ -368,6 +368,17 @@ req.__defineGetter__('path', function(){
   return parse(this).pathname;
 });
 
+/**
+ * Parse the "Host" header field hostname.
+ *
+ * @return {String}
+ * @api public
+ */
+
+req.__defineGetter__('host', function(){
+  return this.get('Host').split(':')[0];
+});
+
 /**
  * Check if the request is fresh, aka
  * Last-Modified and/or the ETag

test/req.host.js

@@ -0,0 +1,18 @@
+
+var express = require('../');
+
+function req(ret) {
+  return {
+      get: function(){ return ret }
+    , __proto__: express.request
+  };
+}
+
+describe('req', function(){
+  describe('.host', function(){
+    it('should return hostname', function(){
+      req('example.com:3000').host.should.equal('example.com');
+      req('example.com').host.should.equal('example.com');
+    })
+  })
+})