From 8c365b1a3af6d47cf736deea824dede591c5ab6a Mon Sep 17 00:00:00 2001
From: Scott Nonnenberg <scott@signal.org>
Date: Wed, 8 May 2019 14:59:44 -0700
Subject: [PATCH] Don't add duplicate errors to the database

---
 js/background.js | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/js/background.js b/js/background.js
index 994d6b2cb..522e92310 100644
--- a/js/background.js
+++ b/js/background.js
@@ -1403,6 +1403,14 @@
       }
       const envelope = ev.proto;
       const message = await initIncomingMessage(envelope, { isError: true });
+      const isDuplicate = await isMessageDuplicate(message);
+      if (isDuplicate) {
+        ev.confirm();
+        window.log.warn(
+          `Got duplicate error for message ${message.idForLogging()}`
+        );
+        return;
+      }
 
       await message.saveErrors(error || new Error('Error was null'));
       const id = message.get('conversationId');