session

<networking>

1. A lasting connection between a user (or user agent) and a peer, typically a server, usually involving the exchange of many packets between the user's computer and the server. A session is typically implemented as a layer in a network protocol (e.g. telnet, FTP).

In the case of protocols where there is no concept of a session layer (e.g. UDP) or where sessions at the session layer are generally very short-lived (e.g. HTTP), virtual sessions are implemented by having each exchange between the user and the remote host include some form of cookie which stores state (e.g. a unique session ID, information about the user's preferences or authorisation level, etc.).

See also login.

2. A lasting connection using the session layer of a networking protocol.

Last updated: 1997-08-03

Nearby terms:

Service Set Identifier ♦ servlet ♦ session ♦ Session Initiation Protocol ♦ session layer

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