arpa_inet.h(0p) — Linux manual page

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.1‐2017, htonl(3p),
       inet_addr(3p), inet_ntop(3p)

COPYRIGHT         top

       Portions of this text are reprinted and reproduced in electronic
       form from IEEE Std 1003.1-2017, Standard for Information
       Technology -- Portable Operating System Interface (POSIX), The
       Open Group Base Specifications Issue 7, 2018 Edition, Copyright
       (C) 2018 by the Institute of Electrical and Electronics
       Engineers, Inc and The Open Group.  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.opengroup.org/unix/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               2017                   arpa_inet.h(0P)

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