huschi.net

arpa_inet.h(0P)            POSIX Programmer's Manual           arpa_inet.h(0P)
PROLOG
       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
       arpa/inet.h -- definitions for internet operations
SYNOPSIS
       #include <arpa/inet.h>
DESCRIPTION
       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
       None.
RATIONALE
       None.
FUTURE DIRECTIONS
       None.
SEE ALSO
       <inttypes.h>, <netinet_in.h>
       The  System  Interfaces  volume  of POSIX.1-2008, htonl(), inet_addr(),
       inet_ntop()
COPYRIGHT
       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 Electri-
       cal 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.ker-
       nel.org/doc/man-pages/reporting_bugs.html .
IEEE/The Open Group                  2013                      arpa_inet.h(0P)