Note: Not original!
The previous article "Socket" in Visual C # .NET Network Program: The class supports HTTP, TCP, and UDP forms the intermediate layer of TCP / IP three-layer model (request response layer, application protocol layer, transport layer) - Application Protocol layer, the class of the layer provides a higher level of abstraction than the bottom-up Socket class, and its packaged TCP and UDP socket creation, do not need to handle the details of the connection, which makes us in writing socket levels When the agreement, you can try more.
