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Member Since 07 Jan 2009
Offline Last Active May 14 2013 07:35 AM

#5044702 C# .NET 4.0/4.5 UDP send issue

Posted by on 19 March 2013 - 04:56 PM

I figured this out. This issue is happening because the underlying buffer on the variable m_ClientSendArgs is constantly being changed using SetBuffer:


byte[] buffer = m_ClientSendQueue.Dequeue();

m_ClientSendArgs.SetBuffer(buffer, 0, buffer.Length); 


When I assigned a static buffer to it and used Buffer.BlockCopy, the issue went away:


byte[] buffer = m_ClientSendQueue.Dequeue();

Buffer.BlockCopy(buffer, 0, m_ClientSendBuffer, 0, buffer.Length);

m_ClientSendArgs.SetBuffer(0, buffer.Length); 


So I've been implementing it wrong all along. It's strange that it wasn't an issue on .NET 3.5, or an issue for TCP on .NET 4.0/4.5.