Berkeley Sockets
Berkeley sockets are part of an application programming interface (API) that specifies the data structures and function calls that interact with the operating system's network subsystem. The name derives from the origins of the API in release 4.2 of the Berkeley Standard Distribution (4.2BSD) of UNIX. Berkeley sockets act at the transport layer: They help get the data where it's going, but have nothing to say about the content of the data.
Berkeley sockets are part of an API, not a specific protocol, which defines how the programmer interacts with an idealized network. Although strongly associated with the TCP/IP network protocol for which the API was first designed, the Berkeley sockets API is generic enough to support other ...
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