From f90059e34015ef4d143e9b7a81d3b5ea5355ea1f Mon Sep 17 00:00:00 2001
From: Yarmo Mackenbach <yarmo@yarmo.eu>
Date: Sat, 15 Aug 2020 01:03:45 +0200
Subject: [PATCH] Add timeout to fetch calls

---
 static/scripts.js | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/static/scripts.js b/static/scripts.js
index 44c2436..2d78f06 100644
--- a/static/scripts.js
+++ b/static/scripts.js
@@ -454,7 +454,7 @@ async function verifyProof(url, fingerprint) {
         output.qr = url;
 
         try {
-            response = await fetch(output.proofUrl);
+            response = await fetchWithTimeout(output.proofUrl);
             if (!response.ok) {
                 throw new Error('Response failed: ' + response.status);
             }
@@ -877,6 +877,15 @@ async function generateProfileURL(data) {
     }
 }
 
+async function fetchWithTimeout(url, timeout = 3000) {
+    return Promise.race([
+        fetch(url),
+        new Promise((_, reject) =>
+            setTimeout(() => reject(new Error('timeout')), timeout)
+        )
+    ]);
+}
+
 // General purpose
 let elFormVerify = document.body.querySelector("#form-verify"),
     elFormEncrypt = document.body.querySelector("#form-encrypt"),