UDP RFCs

UDP, User Datagram Protocol, is a networking protocol used to send packets of data between hosts on a network.

The Original RFC

• RFC 768 — User Datagram Protocol (August 1980)

Guidelines RFCs

• RFC 5405 — Unicast UDP Usage Guidelines for Application Designers (Obsolete) (November 2008)
• RFC 8085 — UDP Usage Guidelines (March 2017)

UDP-Lite

This is a protocol based on UDP that delivers damaged data instead of discarding it.

• RFC 3828 — The Lightweight User Datagram Protocol (UDP-Lite) (July 2004)
• RFC 5097 — MIB for the UDP-Lite Protocol (January 2008)
• RFC 4019 — RObust Header Compression: Profiles for UDP-Lite (April 2005)

Port Numbers

IANA also maintains the list of assigned TCP and UDP port numbers, such as “Port 53” for DNS.