RNET-1175 Fix potential outgoing message corruption in managed websoc…

…kets (#3670) * Fix potential outgoing message corruption in managed websockets * Update CHANGELOG.md
realm · Sep 16, 2024 · a1ae02c · a1ae02c
1 parent 9a82cf2
commit a1ae02c
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diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -4,7 +4,7 @@
 * None
 
 ### Fixed
-* None
+* Fixed a possible disruption of sync traffic under heavy load when using managed web sockets where malformed binary messages cause the server to drop the connection and force the client to reconnect and upload again. (Issue [#3671](https://github.com/realm/realm-dotnet/issues/3671)).
 
 ### Compatibility
 * Realm Studio: 15.0.0 or later.

diff --git a/Realm/Realm/Native/SyncSocketProvider.WebSocket.cs b/Realm/Realm/Native/SyncSocketProvider.WebSocket.cs
@@ -124,7 +124,7 @@ public async void Write(BinaryValue data, IntPtr native_callback)
 
             try
             {
-                await _webSocket.SendAsync(new(buffer), WebSocketMessageType.Binary, true, _cancellationToken);
+                await _webSocket.SendAsync(new(buffer, 0, (int)data.size), WebSocketMessageType.Binary, true, _cancellationToken);
             }
             catch (Exception e)
             {
-Original file line number
+Diff line change
@@ Expand Up @@
                 try
                 {
-                    await _webSocket.SendAsync(new(buffer), WebSocketMessageType.Binary, true, _cancellationToken);
+                    await _webSocket.SendAsync(new(buffer, 0, (int)data.size), WebSocketMessageType.Binary, true, _cancellationToken);
                 }
                 catch (Exception e)
                 {
@@ Expand Down @@