Common
Unix domain socket
Communications endpoint for exchanging data between processes
Unix domain socket
A Unix domain socket (UDS), also called a local socket or inter-process communication (IPC) socket, is a communication endpoint used for data exchange between processes running on the same Unix or Unix-like operating system. The term Unix domain socket refers to the domain argument value AF_UNIX passed to the system call that creates the socket. The same communication domain can also be selected with AF_LOCAL. Valid type argument values for a UDS are: SOCK_STREAM (compare to TCP) – a stream-oriented socket SOCK_DGRAM (compare to UDP) – a datagram-oriented socket that preserves message boundaries; on most Unix implementations, Unix domain datagram sockets are reliable and do not reorder datagrams SOCK_SEQPACKET (compare to SCTP) – a connection-oriented sequenced-packet socket that preserves message boundaries and delivers messages in the order sent The UDS facility is a standard component of a POSIX operating system. The API for a UDS is similar to that of an Internet socket, but instead...
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