TCPforbindelse

A TCPforbindelse, or TCP connection, is a fundamental concept in computer networking, representing a reliable, ordered, and error-checked stream of data between two applications running on hosts communicating via the Internet Protocol (IP). TCP, Transmission Control Protocol, is one of the core protocols of the Internet protocol suite and is responsible for establishing and managing these connections.

The establishment of a TCPforbindelse involves a process known as the "three-way handshake." This handshake ensures that both the client and server are ready to communicate and agree on initial sequence numbers for the data they will exchange. Once the connection is established, data can be sent in segments. TCP ensures that these segments arrive in the correct order and are retransmitted if they are lost or corrupted during transmission. This reliability is crucial for applications like web browsing, email, and file transfer, where data integrity is paramount.

Each TCPforbindelse is uniquely identified by a combination of the source and destination IP addresses and the source and destination port numbers. Ports allow multiple applications on a single host to use the network simultaneously. When a TCPforbindelse is no longer needed, it is closed through a similar handshake process, ensuring that all outstanding data has been acknowledged before the connection is terminated. This robust connection management makes TCP a cornerstone of modern internet communication.