From deab3432b5e19f0924ea10df2f605dbb971fe188 Mon Sep 17 00:00:00 2001
From: M66B <M66B@users.noreply.github.com>
Date: Mon, 29 Jul 2019 12:18:34 +0200
Subject: [PATCH] Sanitize read/write errors

---
 app/src/main/java/eu/faircode/email/Helper.java | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/app/src/main/java/eu/faircode/email/Helper.java b/app/src/main/java/eu/faircode/email/Helper.java
index 891c94172a..9a7c7cc464 100644
--- a/app/src/main/java/eu/faircode/email/Helper.java
+++ b/app/src/main/java/eu/faircode/email/Helper.java
@@ -99,6 +99,7 @@ import java.util.concurrent.atomic.AtomicInteger;
 
 import javax.mail.FolderClosedException;
 import javax.mail.MessageRemovedException;
+import javax.mail.MessagingException;
 
 import static android.os.Process.THREAD_PRIORITY_BACKGROUND;
 import static androidx.browser.customtabs.CustomTabsService.ACTION_CUSTOM_TABS_CONNECTION;
@@ -426,6 +427,13 @@ public class Helper {
             if (ex instanceof MessageRemovedException)
                 return null;
 
+            if (ex instanceof MessagingException &&
+                    ex.getCause() instanceof ConnectionException &&
+                    ex.getCause().getMessage() != null &&
+                    (ex.getCause().getMessage().contains("Read error") ||
+                            ex.getCause().getMessage().contains("Write error")))
+                return null;
+
             if (ex instanceof IOException &&
                     ex.getCause() instanceof MessageRemovedException)
                 return null;