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Does anyone know what Socket.UseOnlyOverlappedIO does, and if so, does it affect performance? There seems to be no real explanation on MSDN.
Thanks in advance.
Sorry for the old post but this caused me some issues!
The answer isn’t correct, UseOnlyOverlappedIO (at least in .net 4) means that async calls (other that XXAsync) on the socket will not be bound to an IO completion port.
The value is ignored for the XXAsync calls which means that IO completion ports are always used so you can’t do things like Duplicate the socket to another process.
Whether or not it will affect performance depends on your app, test it with both!