--- a/client.js
+++ b/client.js
@@ -1,21 +1,7 @@
 'use strict';
 
-const BOSH_SERVICE = 'https://bosh.linkmauve.fr/';
-
-function rawInput(data)
-{
-    console.log('RECV', data);
-}
-
-function rawOutput(data)
-{
-    console.log('SENT', data);
-}
-
 document.addEventListener('DOMContentLoaded', function () {
-    const connection = new Strophe.Connection(BOSH_SERVICE);
-    connection.rawInput = rawInput;
-    connection.rawOutput = rawOutput;
+    let connection = null;
 
     const jid_element = document.getElementById('jid');
     const pass_element = document.getElementById('pass');
@@ -25,17 +11,62 @@ document.addEventListener('DOMContentLoa
 
     const avatar_img = document.getElementById('avatar');
 
+    function rawInput(data)
+    {
+        console.log('RECV', data);
+    }
+
+    function rawOutput(data)
+    {
+        console.log('SENT', data);
+    }
+
     connect_button.addEventListener('click', function (evt) {
         if (connect_button.value == 'connect') {
-            connection.connect(jid_element.value,
-                               pass_element.value,
-                               onConnect);
-        } else {
+            const jid = jid_element.value;
+            getBOSHService(jid).then((bosh_service) => {
+                connection = new Strophe.Connection(bosh_service);
+                connection.rawInput = rawInput;
+                connection.rawOutput = rawOutput;
+                connection.connect(jid,
+                                   pass_element.value,
+                                   onConnect);
+            });
+        } else if (connection != null) {
             connection.disconnect();
         }
         evt.preventDefault();
     });
 
+    function getBOSHService(jid)
+    {
+        return new Promise((resolve, reject) => {
+            const [nodepart, domainpart] = jid.split('@', 2);
+            //const url = 'https://' + domainpart + '/.well-known/host-meta';
+            const url = '/.well-known/host-meta';
+            const xhr = new XMLHttpRequest();
+            xhr.onload = function (evt) {
+                const xml = evt.target.responseXML;
+                const links = parseXPath(xml, './xrd:XRD/xrd:Link', XPathResult.ORDERED_NODE_ITERATOR_TYPE);
+                let bosh_service = null;
+                while (true) {
+                    const link = links.iterateNext();
+                    if (!link)
+                        break;
+                    if (link.getAttributeNS(null, 'rel') == 'urn:xmpp:alt-connections:xbosh') {
+                        bosh_service = link.getAttributeNS(null, 'href');
+                        break;
+                    }
+                    // TODO: also support WebSocket.
+                }
+                console.log('bosh_service', bosh_service);
+                resolve(bosh_service);
+            };
+            xhr.open('GET', url);
+            xhr.send();
+        });
+    }
+
     function onConnect(status)
     {
         if (status == Strophe.Status.CONNECTING) {