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Network Programming for Microsoft® Windows®, Second Edition by Jim Ohlund, Anthony Jones

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Protocol Characteristics

Now that we’ve given some information about the internals of Winsock, we’ll discuss the protocols that may be accessed. As we mentioned earlier, a Winsock provider implements a protocol that exhibits certain characteristics. A multitude of different transport protocols are available on Windows, such as TCP, UDP, IPX, and SPX. Each protocol behaves differently. Some require a connection to be established before sending or receiving data. Others don’t guarantee the reliability or integrity of the data. In this section we’ll look at the characteristics that apply to protocols.

Message-Oriented

A protocol is said to be message-oriented if for each discrete write command, it transmits only those bytes as a single message ...

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