Abstract

Unlike UDP that does not touch upon the complexities, Transmission Control Protocol (TCP) is a full-featured version that solves many problems.TCP is documented in many RFCs, with many revisions, additions, and adjustments, not to mention reports of research and development to improve it. This chapter explains the problems that one can solve using TCP. The chapter shows how TCP protocol works and what does TCP protocol exchanges look like. RFC 793 provides the details on the attributes and features of transmission control protocol. TCP headers are designed to support TCP protocol interactions such as this three-way handshake as well as a formal disconnect procedure; other aspects of the protocol such as flow control and segment checksums are also best introduced with the TCP headers. RFC 3168 adds two new flags for using explicit congestion notification (ECN) with TCP. TCP will continue to dominate the internet as an important transport layer protocol for years to come, yet the introduction of SCTP as a standards-track protocol serves as an alternative.

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