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46 .TH IN.H 3HEAD "Aug 30, 2002"
48 in.h, in \- Internet Protocol family
52 #include <netinet/in.h>
57 The <\fBnetinet/in.h\fR> header defines the following types through
65 An unsigned integral type of exactly 16 bits.
74 An unsigned integral type of exactly 32 bits. The <\fBnetinet/in.h\fR> header
75 defines the \fBin_addr\fR structure that includes the following member:
80 The <\fBnetinet/in.h\fR> header defines the \fBin_addr\fR structure that
81 includes the following member:
91 The <\fBnetinet/in.h\fR> header defines the type \fBsa_family_t\fR as described
92 in \fBsocket.h\fR(3HEAD).
95 The <\fBnetinet/in.h\fR> header defines the following macros for use as values
96 of the \fIlevel\fR argument of \fBgetsockopt()\fR and \fBsetsockopt()\fR:
100 \fB\fBIPPROTO_IP\fR \fR
109 \fB\fBIPPROTO_ICMP\fR \fR
112 Control message protocol
118 \fB\fBIPPROTO_TCP\fR \fR
127 \fB\fBIPPROTO_UDP\fR \fR
130 User datagram protocol The <\fBnetinet/in.h\fR> header defines the following
131 macros for use as destination addresses for \fBconnect()\fR, \fBsendmsg()\fR,
138 \fB\fBINADDR_ANY\fR \fR
147 \fB\fBINADDR_BROADCAST\fR \fR
155 The <\fBnetinet/in.h\fR> header defines the \fBsockaddr_in\fR structure that is
156 used to store addresses for the Internet protocol family. Values of this type
157 must be cast to \fBstruct sockaddr\fR for use with the socket interfaces.
160 For applications that do not require standard-conforming behavior (those that
161 use the socket interfaces described in section (3SOCKET) of the reference
162 manual; see \fBIntro\fR(3) and \fBstandards\fR(5)), the <\fBnetinet/in.h\fR>
163 header defines the \fBsockaddr_in\fR structure that includes the following
168 sa_family_t sin_family
170 struct in_addr sin_addr
175 .SS "Standard conforming"
177 For applications that require standard-conforming behavior (those that use the
178 socket interfaces described in section (3XNET) of the reference manual; see
179 \fBIntro\fR(3) and \fBstandards\fR(5)), the <\fBnetinet/in.h\fR> header defines
180 the \fBsockaddr_in\fR structure that includes the following members:
184 sa_family_t sin_family
186 struct in_addr sin_addr
187 unsigned char sin_zero[8]
193 See \fBattributes\fR(5) for descriptions of the following attributes:
201 ATTRIBUTE TYPE ATTRIBUTE VALUE
203 Interface Stability Standard
208 \fBIntro\fR(3), \fBconnect\fR(3SOCKET), \fBconnect\fR(3XNET),
209 \fBgetsockopt\fR(3SOCKET), \fBgetsockopt\fR(3XNET), \fBsendmsg\fR(3SOCKET),
210 \fBsendmsg\fR(3XNET), \fBsendto\fR(3SOCKET), \fBsendto\fR(3XNET),
211 \fBsetsockopt\fR(3SOCKET), \fBsetsockopt\fR(3XNET), \fBsockaddr\fR(3SOCKET),
212 \fBsocket.h\fR(3HEAD), \fBattributes\fR(5), \fBstandards\fR(5)