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Berkeley sockets originated with the 4.2BSD Unix operating system, released in 1983, as a programming interface.Not until 1989, however, could the University of California, Berkeley release versions of the operating system and networking library free from the licensing constraints of AT&T Corporation's proprietary Unix.
Scapy is a packet manipulation tool for computer networks, [3] [4] originally written in Python by Philippe Biondi. It can forge or decode packets, send them on the wire, capture them, and match requests and replies. It can also handle tasks like scanning, tracerouting, probing, unit tests, attacks, and network discovery.
A network socket is a software structure within a network node of a computer network that serves as an endpoint for sending and receiving data across the network. The structure and properties of a socket are defined by an application programming interface (API) for the networking architecture.
Oracle WebCenter Content Portable: Content Server—Intradoc Socket port 6255: Unofficial: Oracle WebCenter Content Portable: Inbound Refinery—Intradoc Socket port 6257: Unofficial: WinMX (see also 6699) 6260: Unofficial: planet M.U.L.E. 6262: Unofficial: Sybase Advantage Database Server: 6343: Yes: SFlow, sFlow traffic monitoring 6346: Yes
On Unix-like computers, out-of-band data can be read with the recv() system call. A process or process group can be configured to receive SIGURG signals when out-of-band data is available for reading on a socket, by using the F_SETOWN command of the fcntl() system call.
Linux 2.4.4+ supports a TCP_QUICKACK socket option that disables delayed ACK. [2] For example, consider a situation where Bob is sending data to Carol. Bob's socket layer has less than a complete packet's worth of data remaining to send. Per Nagle's algorithm, it will not be sent until he receives an ACK for the data that has already been sent.
In computer programming, a sentinel value (also referred to as a flag value, trip value, rogue value, signal value, or dummy data) is a special value in the context of an algorithm which uses its presence as a condition of termination, typically in a loop or recursive algorithm.
After instantiating a new socket, the server binds the socket to an address. For a Unix domain socket, the address is a /path/filename.. Because the socket address may be either a /path/filename or an IP_address:Port_number, the socket application programming interface requires the address to first be set into a structure.