The BCL provides a layered set of classes for communicating over the network using different levels of abstraction including raw socket access; TCP, UDP, and HTTP protocol support; a high-level request/response mechanism based on URIs and streams; and pluggable protocol handlers (see Section 3.7 in Chapter 3).
For more information, see the following namespaces:
System.Net System.Net.Sockets
Important types in other namespaces include
System.IO.Stream.
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