Parameter values set by the application

SOC-FUNCTION

A 16-byte character field containing SOCKET. The field is left-aligned and padded on the right with blanks.

AF

A fullword binary field set to the addressing family. For TCP⁄IP the value is set to decimal 2 for AF_INET, or decimal 19, indicating AF_INET6.

SOCTYPE

A fullword binary field set to the type of socket required. The types are:

Value: Description
1: Stream sockets provide sequenced, two-way byte streams that are reliable and connection-oriented. They support a mechanism for out-of-band data.
2: Datagram sockets provide datagrams, which are connectionless messages of a fixed maximum length whose reliability is not guaranteed. Datagrams can be corrupted, received out of order, lost, or delivered multiple times.
3: Raw sockets provide the interface to internal protocols (such as IP and ICMP).

PROTO

A fullword binary field set to the protocol to be used for the socket. If this field is set to 0, the default protocol is used. For streams, the default is TCP; for datagrams, the default is UDP.

PROTO numbers are found in the hlq.etc.proto data set. For IPv6 raw sockets, PROTO cannot be set to the following values:

Protocol name: Numeric value
IPROTO_HOPOPTS: 0
IPPROTO_TCP: 6
IPPROTO_UDP: 17
IPPROTO_IPV6: 41
IPPROTO_ROUTING: 43
IPPROTO_FRAGMENT: 44
IPPROTO_ESP: 50
IPPROTO_AH: 51
IPPROTO_NONE: 59
IPPROTO_DSTOPTS: 60