in(3head) - osol9

1in.h(3HEAD)                         Headers                        in.h(3HEAD)
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NAME

6       in.h, in - Internet Protocol family
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SYNOPSIS

9       #include <netinet/in.h>
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DESCRIPTION

13       The <netinet/in.h> header defines the following types through typedef:
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15       in_port_t    An unsigned integral type of exactly 16 bits.
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18       in_addr_t    An   unsigned  integral  type  of  exactly  32  bits.  The
19                    <netinet/in.h> header defines the in_addr  structure  that
20                    includes the following member:
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24       The  <netinet/in.h>  header defines the in_addr structure that includes
25       the following member:
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27         in_addr_t       s_addr
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31       The <netinet/in.h> header defines the type sa_family_t as described  in
32       socket.h(3HEAD).
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35       The  <netinet/in.h> header defines the following macros for use as val‐
36       ues of the level argument of getsockopt() and setsockopt():
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38       IPPROTO_IP           Dummy for  IP
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41       IPPROTO_ICMP         Control message protocol
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44       IPPROTO_TCP          TCP
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47       IPPROTO_UDP          User datagram protocol The  <netinet/in.h>  header
48                            defines  the  following macros for use as destina‐
49                            tion  addresses  for  connect(),  sendmsg(),   and
50                            sendto():
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53       INADDR_ANY           Local host address
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56       INADDR_BROADCAST     Broadcast address
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60       The  <netinet/in.h>  header  defines  the sockaddr_in structure that is
61       used to store addresses for the Internet protocol  family.   Values  of
62       this  type  must  be  cast  to  struct sockaddr for use with the socket
63       interfaces.
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65   Default
66       For applications  that  do  not  require  standard-conforming  behavior
67       (those that use the socket interfaces described in section (3SOCKET) of
68       the   reference   manual;   see   Intro(3)   and   standards(5)),   the
69       <netinet/in.h>  header  defines the sockaddr_in structure that includes
70       the following members:
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72         sa_family_t     sin_family
73         in_port_t       sin_port
74         struct in_addr  sin_addr
75         char            sin_zero[8]
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78   Standard conforming
79       For applications that require standard-conforming behavior (those  that
80       use the socket interfaces described in section (3XNET) of the reference
81       manual; see  Intro(3)  and  standards(5)),  the  <netinet/in.h>  header
82       defines the sockaddr_in structure that includes the following members:
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84         sa_family_t     sin_family
85         in_port_t       sin_port
86         struct in_addr  sin_addr
87         unsigned char   sin_zero[8]
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ATTRIBUTES

91       See attributes(5) for descriptions of the following attributes:
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96       ┌─────────────────────────────┬─────────────────────────────┐
97       │      ATTRIBUTE TYPE         │      ATTRIBUTE VALUE        │
98       ├─────────────────────────────┼─────────────────────────────┤
99       │Interface Stability          │Standard                     │
100       └─────────────────────────────┴─────────────────────────────┘
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NAME

SYNOPSIS

DESCRIPTION

ATTRIBUTES

SEE ALSO