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UDP (User Datagram Protocol)

The User Datagram Protocol (UDP) is a very simple layer over the host-to-host Internet Protocol (IP). It only adds 16-bit source and destination port numbers for multiplexing between different applications on the pair of hosts, and 16-bit length and checksum fields. It has been defined in RFC 768.

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There are other protocols layered on top of UDP, for example the Real-time Transport Protocol (RTP) used in real-time media applications. UDT,VFER, RBUDP, Tsunami, and Hurricane are examples of UDP-based bulk transport protocols.


References


  • RFC 768, User Datagram Protocol, J. Postel, August 1980

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