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The Stream Control Transmission Protocol (SCTP) is a computer networking communications protocol in the Transport Layer of the Internet Protocol Suite. Originally intended for Signaling System 7 (SS7) message transport in telecommunication, the protocol provides the message-oriented feature of the User Datagram Protocol (UDP), while ensuring reliable, in-sequence transport of messages with congestion control like the Transmission Control Protocol (TCP). Unlike UDP and TCP, the protocol provides multi-homing and redundant paths to increase resilience and reliability. SCTP is standardized by the Internet Engineering Task Force (IETF) in RFC4960 - Stream Control Transmission Protocol. The SCTP reference implementation was released as part of FreeBSD version 7, and has since been widely ported to other platforms.

Source: https://en.wikipedia.org/wiki/Stream_Control_Transmission_Protocol