Connection and session are two fundamental concepts in networking, often used in conjunction to establish, manage, and terminate communication between two devices or systems.
Connection
A connection refers to a logical path between two devices or systems over a network. It is a bidirectional communication channel that allows data to be transmitted between the devices. There are various types of connection protocols, such as Transmission Control Protocol (TCP) and User Datagram Protocol (UDP), which define the rules for establishing, maintaining, and terminating a connection.
Session
A session is a period of time during which a connection is active and data can be exchanged between the devices. It provides a context for the communication, enabling the devices to maintain state information about the ongoing interaction. This state information can include details about the connection, such as the sequence of data being transmitted, error handling, and security measures.
In the context of your question, Transmission Control Protocol (TCP) is a connection-oriented protocol. This means that before data can be transmitted, a connection must be established between the devices. Once the connection is established, a session is created, and data can be exchanged between the devices.
References
- Kurose, J., & Ross, K. (2019). Computer Networking: A Top-Down Approach (7th ed.). Pearson Education.
- Comer, D. E. (2000). Internetworking with TCP/IP, Volume 1: Principles, Protocols, and Architecture (3rd ed.). Prentice Hall.
- TCP/IP Illustrated, Volume 1: The Protocols (3rd ed.). Addison-Wesley Professional.
- https://en.wikipedia.org/wiki/Connection_(computer_networking)
- https://en.wikipedia.org/wiki/Session_(computer_science)