From f8a4a2c510a08c246ac957ac71d86ff5e86ffdb0 Mon Sep 17 00:00:00 2001
From: Dennis Schubert <mail@dennis-schubert.de>
Date: Fri, 13 Jul 2018 00:04:41 +0200
Subject: [PATCH] Gracefully ignore exceptions when trying to register the
 ProtocolHandler

---
 .../javascripts/helpers/protocol_handler.js     | 17 +++++++++--------
 1 file changed, 9 insertions(+), 8 deletions(-)

diff --git a/app/assets/javascripts/helpers/protocol_handler.js b/app/assets/javascripts/helpers/protocol_handler.js
index 6d9368979..c857c1b51 100644
--- a/app/assets/javascripts/helpers/protocol_handler.js
+++ b/app/assets/javascripts/helpers/protocol_handler.js
@@ -2,19 +2,20 @@
 
 Diaspora.ProtocolHandler = {
   register: function() {
-    if (typeof (window.navigator.registerProtocolHandler) !== "function") {
+    if (!window.navigator.registerProtocolHandler) {
       return false;
     }
 
-    var protocol = location.protocol;
-    var slashes = protocol.concat("//");
-    var host = slashes.concat(window.location.hostname);
-
-    if (location.port) {
-      host = host.concat(":" + location.port);
+    try {
+      window.navigator.registerProtocolHandler(
+        "web+diaspora",
+        [window.location.protocol, "//", window.location.host, "/link?q=%s"].join(""),
+        document.title
+      );
+    } catch (_) {
+      return false;
     }
 
-    window.navigator.registerProtocolHandler("web+diaspora", host.concat("/link?q=%s"), document.title);
     return true;
   }
 };