socket-descriptor

Specifies the name of a fullword field containing the socket descriptor to read from.

buffer

Specifies the name of the area where the data is to be placed.

buffer-length

Specifies the name of a fullword field containing the length of the buffer. buffer-length can be specified as an absolute expression.

read-length

Specifies the name of a fullword field in which the actual length of the data read is returned.