Bugfix: Set protocol after discovering connection methods

Otherwise if an endpoint was passed in with `converse.initialize`, then
that endpoint's protocol is (wrongly) used.

src/headless/connection.js

@@ -53,6 +53,7 @@ export class Connection extends Strophe.Connection {
             api.settings.set("websocket_url", ws_methods.pop());
             api.settings.set('bosh_service_url', bosh_methods.pop());
             this.service = api.settings.get("websocket_url") || api.settings.get('bosh_service_url');
+            this.setProtocol();
         }
     }
 

src/headless/converse-core.js

@@ -789,7 +789,6 @@ export const api = _converse.api = {
     listen: {
         /**
          * Lets you listen to an event exactly once.
-         *
          * @method _converse.api.listen.once
          * @param {string} name The event's name
          * @param {function} callback The callback method to be called when the event is emitted.
@@ -800,9 +799,7 @@ export const api = _converse.api = {
 
         /**
          * Lets you subscribe to an event.
-         *
          * Every time the event fires, the callback method specified by `callback` will be called.
-         *
          * @method _converse.api.listen.on
          * @param {string} name The event's name
          * @param {function} callback The callback method to be called when the event is emitted.
@@ -813,9 +810,6 @@ export const api = _converse.api = {
 
         /**
          * To stop listening to an event, you can use the `not` method.
-         *
-         * Every time the event fires, the callback method specified by `callback` will be called.
-         *
          * @method _converse.api.listen.not
          * @param {string} name The event's name
          * @param {function} callback The callback method that is to no longer be called when the event fires

src/headless/package.json

@@ -43,6 +43,6 @@
     "lodash-es": "^4.17.15",
     "pluggable.js": "2.0.1",
     "sprintf-js": "^1.1.2",
-    "strophe.js": "1.4.0"
+    "strophe.js": "strophe/strophejs#4f9b094ecef4be0d473f92965c5ffb654510a598"
   }
 }