Limit incoming messages to 2k messages like Signal-Android

Author: Trolldemorted

Signal-Windows.Lib/IncomingMessages.cs

@@ -621,7 +621,7 @@ private async Task HandleSignalMessage(SignalServiceEnvelope envelope, SignalSer
                 Direction = type,
                 Status = status,
                 Author = author,
-                Content = new SignalMessageContent() { Content = body },
+                Content = new SignalMessageContent() { Content = body.Truncate(2000) },
                 ThreadId = conversation.ThreadId,
                 DeviceId = (uint)envelope.GetSourceDevice(),
                 Receipts = 0,

Signal-Windows.Lib/Util/LibUtils.cs

@@ -115,4 +115,13 @@ public static FileStream CreateTmpFile(string name)
             return File.Open(ApplicationData.Current.LocalCacheFolder.Path + Path.AltDirectorySeparatorChar + name, FileMode.Create, FileAccess.ReadWrite);
         }
     }
+
+    public static class StringExt
+    {
+        public static string Truncate(this string value, int maxLength) // thanks to https://stackoverflow.com/a/2776689/1569755
+        {
+            if (string.IsNullOrEmpty(value)) return value;
+            return value.Length <= maxLength ? value : value.Substring(0, maxLength);
+        }
+    }
 }