CSHARP-5743: version 3.5 causes delays and disruptions because it is trying to access a disposed semaphore slim

sanych-sun · sanych-sun · commit e9f0c6808740 · 2025-11-12T16:25:23.000-08:00
diff --git a/src/MongoDB.Driver/Core/Connections/BinaryConnection.cs b/src/MongoDB.Driver/Core/Connections/BinaryConnection.cs
@@ -543,6 +543,7 @@ public async Task<ResponseMessage> ReceiveMessageAsync(OperationContext operatio
 
         private void SendBuffer(OperationContext operationContext, IByteBuffer buffer)
         {
+            ThrowIfCancelledOrDisposed(operationContext);
             _sendLock.Wait(operationContext.RemainingTimeout, operationContext.CancellationToken);
             try
             {
@@ -571,6 +572,7 @@ private void SendBuffer(OperationContext operationContext, IByteBuffer buffer)
 
         private async Task SendBufferAsync(OperationContext operationContext, IByteBuffer buffer)
         {
+            ThrowIfCancelledOrDisposed(operationContext);
             await _sendLock.WaitAsync(operationContext.RemainingTimeout, operationContext.CancellationToken).ConfigureAwait(false);
             try
             {

Original file line number	Diff line number	Diff line change
`@@ -543,6 +543,7 @@ public async Task<ResponseMessage> ReceiveMessageAsync(OperationContext operatio`
`543`	`543`
`544`	`544`	`private void SendBuffer(OperationContext operationContext, IByteBuffer buffer)`
`545`	`545`	`{`
	`546`	`+ ThrowIfCancelledOrDisposed(operationContext);`
`546`	`547`	`_sendLock.Wait(operationContext.RemainingTimeout, operationContext.CancellationToken);`
`547`	`548`	`try`
`548`	`549`	`{`
`@@ -571,6 +572,7 @@ private void SendBuffer(OperationContext operationContext, IByteBuffer buffer)`
`571`	`572`
`572`	`573`	`private async Task SendBufferAsync(OperationContext operationContext, IByteBuffer buffer)`
`573`	`574`	`{`
	`575`	`+ ThrowIfCancelledOrDisposed(operationContext);`
`574`	`576`	`await _sendLock.WaitAsync(operationContext.RemainingTimeout, operationContext.CancellationToken).ConfigureAwait(false);`
`575`	`577`	`try`
`576`	`578`	`{`