PROLOG | NAME | SYNOPSIS | DESCRIPTION | APPLICATION USAGE | RATIONALE | FUTURE DIRECTIONS | SEE ALSO | COPYRIGHT

arpa_inet.h(0P)           POSIX Programmer's Manual          arpa_inet.h(0P)

PROLOG         top

       This manual page is part of the POSIX Programmer's Manual.  The Linux
       implementation of this interface may differ (consult the
       corresponding Linux manual page for details of Linux behavior), or
       the interface may not be implemented on Linux.

NAME         top

       arpa/inet.h — definitions for internet operations

SYNOPSIS         top

       #include <arpa/inet.h>

DESCRIPTION         top

       The <arpa/inet.h> header shall define the in_port_t and in_addr_t
       types as described in <netinet/in.h>.

       The <arpa/inet.h> header shall define the in_addr structure as
       described in <netinet/in.h>.

       The <arpa/inet.h> header shall define the INET_ADDRSTRLEN and
       INET6_ADDRSTRLEN macros as described in <netinet/in.h>.

       The following shall be declared as functions, or defined as macros,
       or both. If functions are declared, function prototypes shall be
       provided.

           uint32_t htonl(uint32_t);
           uint16_t htons(uint16_t);
           uint32_t ntohl(uint32_t);
           uint16_t ntohs(uint16_t);

       The <arpa/inet.h> header shall define the uint32_t and uint16_t types
       as described in <inttypes.h>.

       The following shall be declared as functions and may also be defined
       as macros. Function prototypes shall be provided.

           in_addr_t    inet_addr(const char *);
           char        *inet_ntoa(struct in_addr);
           const char  *inet_ntop(int, const void *restrict, char *restrict,
                            socklen_t);
           int          inet_pton(int, const char *restrict, void *restrict);

       Inclusion of the <arpa/inet.h> header may also make visible all
       symbols from <netinet/in.h> and <inttypes.h>.

       The following sections are informative.

APPLICATION USAGE         top

       None.

RATIONALE         top

       None.

FUTURE DIRECTIONS         top

       None.

SEE ALSO         top

       inttypes.h(0p), netinet_in.h(0p)

       The System Interfaces volume of POSIX.1‐2008, htonl(3p),
       inet_addr(3p), inet_ntop(3p)

COPYRIGHT         top

       Portions of this text are reprinted and reproduced in electronic form
       from IEEE Std 1003.1, 2013 Edition, Standard for Information
       Technology -- Portable Operating System Interface (POSIX), The Open
       Group Base Specifications Issue 7, Copyright (C) 2013 by the
       Institute of Electrical and Electronics Engineers, Inc and The Open
       Group.  (This is POSIX.1-2008 with the 2013 Technical Corrigendum 1
       applied.) In the event of any discrepancy between this version 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.unix.org/online.html .

       Any typographical or formatting errors that appear in this page are
       most likely to have been introduced during the conversion of the
       source files to man page format. To report such errors, see
       https://www.kernel.org/doc/man-pages/reporting_bugs.html .

IEEE/The Open Group                 2013                     arpa_inet.h(0P)

Pages that refer to this page: netinet_in.h(0p)htonl(3p)inet_addr(3p)inet_ntop(3p)