domain

Specifies the name of a fullword field containing the domain or address family of the socket. For a list of the domains that can be specified, see Notes.

type

Specifies the name of a fullword field containing the type of the socket. type can be specified as an absolute expression. For a list of socket types that can be specified, see Notes.

protocol-number

Specifies the name of a fullword field containing the protocol. protocol-number can be specified as an absolute expression. For a list of supported protocols, see Notes.

new-socket-descriptor

Specifies the name of a fullword field where the newly created socket descriptor is returned.