xref: /illumos-gate/usr/src/man/man3head/in.h.3head (revision 9498083eeaed1aacdde41369b7fa6f3b84870791)
te
Copyright (c) 1992, X/Open Company Limited All Rights Reserved Portions Copyright (c) 2002, Sun Microsystems, Inc. All Rights Reserved
Sun Microsystems, Inc. gratefully acknowledges The Open Group for permission to reproduce portions of its copyrighted documentation. Original documentation from The Open Group can be obtained online at
http://www.opengroup.org/bookstore/.
The Institute of Electrical and Electronics Engineers and The Open Group, have given us permission to reprint portions of their documentation. In the following statement, the phrase "this text" refers to portions of the system documentation. Portions of this text are reprinted and reproduced in electronic form in the Sun OS Reference Manual, from IEEE Std 1003.1, 2004 Edition, Standard for Information Technology -- Portable Operating System Interface (POSIX), The Open Group Base Specifications Issue 6, Copyright (C) 2001-2004 by the Institute of Electrical and Electronics Engineers, Inc and The Open Group. In the event of any discrepancy between these versions and the original IEEE and The Open Group Standard, the original IEEE and The Open Group Standard is the referee document. The original Standard can be obtained online at http://www.opengroup.org/unix/online.html.
This notice shall appear on any product containing this material.
The contents of this file are subject to the terms of the Common Development and Distribution License (the "License"). You may not use this file except in compliance with the License.
You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE or http://www.opensolaris.org/os/licensing. See the License for the specific language governing permissions and limitations under the License.
When distributing Covered Code, include this CDDL HEADER in each file and include the License file at usr/src/OPENSOLARIS.LICENSE. If applicable, add the following below this CDDL HEADER, with the fields enclosed by brackets "[]" replaced with your own identifying information: Portions Copyright [yyyy] [name of copyright owner]
IN.H 3HEAD "Aug 30, 2002"
NAME
in.h, in - Internet Protocol family
SYNOPSIS

#include <netinet/in.h>
DESCRIPTION

The <netinet/in.h> header defines the following types through typedef: in_port_t

An unsigned integral type of exactly 16 bits.

in_addr_t

An unsigned integral type of exactly 32 bits. The <netinet/in.h> header defines the in_addr structure that includes the following member:

The <netinet/in.h> header defines the in_addr structure that includes the following member:

in_addr_t s_addr

The <netinet/in.h> header defines the type sa_family_t as described in socket.h(3HEAD).

The <netinet/in.h> header defines the following macros for use as values of the level argument of getsockopt() and setsockopt(): IPPROTO_IP

Dummy for IP

IPPROTO_ICMP

Control message protocol

IPPROTO_TCP

TCP

IPPROTO_UDP

User datagram protocol The <netinet/in.h> header defines the following macros for use as destination addresses for connect(), sendmsg(), and sendto():

INADDR_ANY

Local host address

INADDR_BROADCAST

Broadcast address

The <netinet/in.h> header defines the sockaddr_in structure that is used to store addresses for the Internet protocol family. Values of this type must be cast to struct sockaddr for use with the socket interfaces.

"Default"

For applications that do not require standard-conforming behavior (those that use the socket interfaces described in section (3SOCKET) of the reference manual; see Intro(3) and standards(5)), the <netinet/in.h> header defines the sockaddr_in structure that includes the following members:

sa_family_t sin_family
in_port_t sin_port
struct in_addr sin_addr
char sin_zero[8]
"Standard conforming"

For applications that require standard-conforming behavior (those that use the socket interfaces described in section (3XNET) of the reference manual; see Intro(3) and standards(5)), the <netinet/in.h> header defines the sockaddr_in structure that includes the following members:

sa_family_t sin_family
in_port_t sin_port
struct in_addr sin_addr
unsigned char sin_zero[8]
ATTRIBUTES

See attributes(5) for descriptions of the following attributes:

ATTRIBUTE TYPE ATTRIBUTE VALUE
Interface Stability Standard
SEE ALSO

Intro(3), connect(3SOCKET), connect(3XNET), getsockopt(3SOCKET), getsockopt(3XNET), sendmsg(3SOCKET), sendmsg(3XNET), sendto(3SOCKET), sendto(3XNET), setsockopt(3SOCKET), setsockopt(3XNET), sockaddr(3SOCKET), socket.h(3HEAD), attributes(5), standards(5)