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A network socket is a software structure within a network node of a computer network that serves as an endpoint for sending and receiving data across the network. The structure and properties of a socket are defined by an application programming interface (API) for the networking architecture.
A TCP connection is managed by an operating system through a resource that represents the local end-point for communications, the Internet socket. During the lifetime of a TCP connection, the local end-point undergoes a series of state changes: [ 31 ]
WebSocket was first referenced as TCPConnection in the HTML5 specification, as a placeholder for a TCP-based socket API. [8] In June 2008, a series of discussions were led by Michael Carter that resulted in the first version of the protocol known as WebSocket. [9]
The protocols in use today in this layer for the Internet all originated in the development of TCP/IP. In the OSI model the transport layer is often referred to as Layer 4, or L4, [2] while numbered layers are not used in TCP/IP. The best-known transport protocol of the Internet protocol suite is the Transmission Control Protocol (TCP).
When data segments arrive in the wrong order, TCP buffers the out-of-order data until all data can be properly re-ordered and delivered to the application. Heavyweight – TCP requires three packets to set up a socket connection before any user data can be sent. TCP handles reliability and congestion control.
TCP Transmission Control Protocol: RFC 793: 0x07 7 CBT Core-based trees: RFC 2189: 0x08 8 EGP Exterior Gateway Protocol: RFC 888: 0x09 9 IGP Interior gateway protocol (any private interior gateway, for example Cisco's IGRP) 0x0A 10 BBN-RCC-MON BBN RCC Monitoring 0x0B 11 NVP-II Network Voice Protocol: RFC 741: 0x0C 12 PUP Xerox PUP: 0x0D 13 ...
The Windows Sockets project had its origins in a Birds of a Feather session held at Interop '91 in San Jose on October 10, 1991. [1] It is based on socket specifications created by NetManage and which it put into public domain at this meeting. At the time the NetManage socket was the only 100% DLL-based, multi-threaded product for Windows 3.0 ...
A TCP session, which is synonymous to a TCP virtual circuit, a TCP connection, or an established TCP socket. In the case of transport protocols that do not implement a formal session layer (e.g., UDP ) or where sessions at the application layer are generally very short-lived (e.g., HTTP), sessions are maintained by a higher level program using ...