Building TCP/IP Socket Applications

In the networked world, various SocketTCP/IP socket applicationgeneral-purpose application-layer systems are available, such as web browsers, email clients, and social network apps. These systems are already integrated with existing network protocols to provide their functionality. For example, web browsers use the HTTP application protocol for processing hypertext. They also use TCP as the underlying transport protocol. Since these off-the-shelf application systems already embed the necessary network protocols and communications, no further development is required before they are used.