NAME

       arpa/inet.h - definitions for internet operations

SYNOPSIS

       #include <arpa/inet.h>

DESCRIPTION

       The in_port_t and in_addr_t types shall be defined as described in <netinet/in.h> .

       The in_addr structure shall be defined as described in <netinet/in.h> .

       The INET_ADDRSTRLEN    and INET6_ADDRSTRLEN  macros shall be defined as described in <netinet/in.h> .

       The  following  shall  either  be  declared  as  functions,  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 uint32_t and uint16_t types shall be defined 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

       <netinet/in.h>   ,  <inttypes.h>  ,  the  System  Interfaces  volume  of  IEEE Std 1003.1-2001,  htonl(),
       inet_addr()

COPYRIGHT

       Portions of this text are reprinted and reproduced in electronic form from IEEE Std 1003.1, 2003 Edition,
       Standard for Information Technology -- Portable Operating System Interface (POSIX), The Open  Group  Base
       Specifications Issue 6, Copyright (C) 2001-2003 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 .

IEEE/The Open Group                                   2003                                      <arpa/inet.h>(P)