Merge pull request #20 from richmarr/master

Added domain option

README.md

@@ -28,6 +28,7 @@ number of options:
     * session_key -- The cookie key name to store the session data in
       (default: _node)
     * path -- The path to use for the cookie (default: '/')
+	* domain -- (optional) Define a specific domain/subdomain scope for the cookie
 
 
 ## Why store session data in cookies?

lib/cookie-sessions.js

@@ -57,6 +57,7 @@ var exports = module.exports = function(settings){
                     + '; expires=' + exports.expires(s.timeout)
                     + '; path=' + s.path + '; HttpOnly';
             }
+            if ( s.domain ) cookiestr +='; Domain=' + s.domain;
 
             if (cookiestr !== undefined) {
                 if(Array.isArray(headers)) headers.push(['Set-Cookie', cookiestr]);

test/test-cookie-sessions.js

@@ -348,7 +348,8 @@ exports['writeHead'] = function(test){
     var s = {
         session_key:'_node',
         secret: 'secret',
-        timeout: 86400
+        timeout: 86400,
+        domain:'.domain.com'
     };
     var req = {headers: {cookie: "_node="}, url: '/'};
     var res = {
@@ -357,7 +358,7 @@ exports['writeHead'] = function(test){
                 headers['Set-Cookie'],
                 '_node=serialized_session; ' +
                 'expires=expiry_date; ' +
-                'path=/; HttpOnly'
+                'path=/; HttpOnly; Domain=.domain.com'
             );
             test.equals(headers['original'], 'header');
         }