xenial (7) arpa_inet.h.7posix.gz

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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()


       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 .