The Transmission Control Protocol (TCP) is a core protocol of the Internet protocol suite. It originated in the initial network implementation in which it complemented the Internet Protocol (IP). Therefore, the entire suite is commonly referred to as TCP/IP. TCP provides reliable, ordered, and error-checked delivery of a stream of octets between applications running on hosts communicating over an IP network. Major Internet applications such as the World Wide Web, email, remote administration and file transfer rely on TCP. Applications that do not require reliable data stream service may use the...

A network socket is an endpoint of a connection across a computer network. Today, most communication between computers is based on the Internet Protocol; therefore most network sockets are Internet sockets. More precisely, a socket is a handle (abstract reference) that a local program can pass to the networking application programming interface (API) to use the connection, for example "send this data on this socket". Sockets are often represented internally as simple integers, which identify which connection to use. For example, to send "Hello, world!" via TCP to port 80 of the host with address...

Not to be confused with the Black Sabbath song of the same name "Who Are You", composed by Pete Townshend, is the title track on The Who's 1978 album, Who Are You, the last album released before drummer Keith Moon's death in September 1978. It was released as a double-A sided single with the John Entwistle composition "Had Enough", also featured on the album. The song became one of the band's biggest hits in North America, peaking at number 7 in Canada and at number 14 in the US. The keyboard pieces on the track are played by Rod Argent. == Background == Musically, the origins of "Who Are You"...