SCTP协议栈，SCTP是一种IP层的应用协议，实际上是与TCP,UDP并列的协议，SCTP传输比TCP更可靠，目前主要用于SIP类通讯协议。-SCTP, SCTP is a layer of IP Application Protocol is actually TCP, UDP tied to the agreement, SCTP transmission more reliable than TCP, the key category for SIP communication prot

TCP -传输控制协议,提供的是面向连接、可靠的字节流服务 UDP -用户数据报协议，是一个简单的面向数据报的运输层协议.-TCP - Transmission Control Protocol, provided that the connection-oriented, reliable byte stream service UDP - User Datagram Protocol, is a simple datagram-oriented transport layer protoc