Description: UDP is TCP/IP protocol family is one of the two protocols of the transport layer design, which in the process of process and the process of communication, provides limited error calibration function, is a connectionless, unreliable protocol. UDP does the communication between processes at a lower level, and there is no traffic control mechanism when receiving the grouping, and there is no confirmation mechanism, which can be applied to the highly reliable LAN. Because UDP takes a non-concatenated approach, the protocol is simple, and protocols are efficient in some specific applications. UDP is suitable for real-time applications, such as IP phone, video conference, they require the source host sends data at a constant rate, and, when the network congestion can lose some data, but the delay can't be too big. Based on these features, the application of streaming multimedia communication, multicast and other applications in the transport layer is the UDP protocol.
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