diff --git a/cometd-nodejs-client.js b/cometd-nodejs-client.js
index 334fc99..4bdcc2f 100644
--- a/cometd-nodejs-client.js
+++ b/cometd-nodejs-client.js
@@ -52,14 +52,16 @@ module.exports = {
                 if (!cookieStore) {
                     cookieStore = _cookieStore;
                 }
-                var list = cookieStore[_config.hostname];
-                if (list) {
+                var jar = cookieStore[_config.hostname];
+                if (jar) {
                     var cookies = '';
-                    for (var i = 0; i < list.length; ++i) {
-                        if (i > 0) {
-                            cookies += '; ';
+                    for (var name in jar) {
+                        if (jar.hasOwnProperty(name)) {
+                            if (cookies) {
+                                cookies += '; ';
+                            }
+                            cookies += jar[name];
                         }
-                        cookies += list[i];
                     }
                     if (cookies) {
                         _config.headers['Cookie'] = cookies;
@@ -84,11 +86,15 @@ module.exports = {
                                     var cookie = parts[0];
 
                                     var host = _config.hostname;
-                                    var list = cookieStore[host];
-                                    if (list === undefined) {
-                                        cookieStore[host] = list = [];
+                                    var jar = cookieStore[host];
+                                    if (jar === undefined) {
+                                        cookieStore[host] = jar = {};
+                                    }
+
+                                    var equal = cookie.indexOf('=');
+                                    if (equal > 0) {
+                                        jar[cookie.substring(0, equal)] = cookie;
                                     }
-                                    list.push(cookie);
                                 }
                             }
                         }
diff --git a/test/cookies.js b/test/cookies.js
index 44cfe49..097e4df 100644
--- a/test/cookies.js
+++ b/test/cookies.js
@@ -144,4 +144,43 @@ describe('cookies', function() {
             xhrA1.send();
         });
     });
+
+    it('handles cookie sent multiple times', function(done) {
+        var cookieName = 'a';
+        var cookieValue = 'b';
+        var cookie = cookieName + '=' + cookieValue;
+        _server = http.createServer(function(request, response) {
+            if (/\/verify$/.test(request.url)) {
+                assert.strictEqual(request.headers['cookie'], cookie);
+                response.end();
+            } else {
+                response.setHeader('Set-Cookie', cookie);
+                response.end();
+            }
+        });
+        _server.listen(0, 'localhost', function() {
+            var port = _server.address().port;
+            console.log('listening on localhost:' + port);
+
+            var xhr1 = new window.XMLHttpRequest();
+            xhr1.open('GET', 'http://localhost:' + port + '/1');
+            xhr1.onload = function() {
+                assert.strictEqual(xhr1.status, 200);
+                var xhr2 = new window.XMLHttpRequest();
+                xhr2.open('GET', 'http://localhost:' + port + '/2');
+                xhr2.onload = function() {
+                    assert.strictEqual(xhr2.status, 200);
+                    var xhr3 = new window.XMLHttpRequest();
+                    xhr3.open('GET', 'http://localhost:' + port + '/verify');
+                    xhr3.onload = function() {
+                        assert.strictEqual(xhr1.status, 200);
+                        done();
+                    };
+                    xhr3.send();
+                };
+                xhr2.send();
+            };
+            xhr1.send();
+        });
+    });
 });