inet.h

<arpa/inet.h>(P)					     <arpa/inet.h>(P)



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 <int-
       types.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	 sym-
       bols 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 Technol-
       ogy -- 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 .



POSIX				     2003		     <arpa/inet.h>(P)