Man Inet_ntop en anglais
inet_ntop(3)               Linux Programmer's Manual              inet_ntop(3)



 

NAME


       inet_ntop - Parse network address structures

 

SYNOPSIS


       #include 
       #include 
       #include 

       const char *inet_ntop(int af, const void *src,
                             char *dst, socklen_t cnt);

 

DESCRIPTION






       This  function  converts  the  network  address structure src in the af
       address family into a character string, which is copied to a  character
       buffer dst, which is cnt bytes long.

       inet_ntop(3)  extends  the  inet_ntoa(3)  function  to support multiple
       address families, inet_ntoa(3) is now considered to  be  deprecated  in
       favor  of  inet_ntop(3).   The following address families are currently
       supported:

       AF_INET
              src points to a struct in_addr (network byte order format) which
              is  converted to an IPv4 network address in the dotted-quad for-
              mat,  "ddd.ddd.ddd.ddd".   The  buffer  dst  must  be  at  least
              INET_ADDRSTRLEN bytes long.

       AF_INET6
              src  points  to  a  struct  in6_addr (network byte order format)
              which is converted to a representation of this  address  in  the
              most  appropriate  IPv6 network address format for this address.
              The buffer dst must be at least INET6_ADDRSTRLEN bytes long.

 

RETURN VALUE


       inet_ntop() returns a non-null pointer to dst.   NULL  is  returned  if
       there was an error, with errno set to EAFNOSUPPORT if af was not set to
       a valid address family, or to ENOSPC if the  converted  address  string
       would exceed the size of dst given by the cnt argument.

 

CONFORMING TO


       POSIX.1-2001.   Note  that  RFC 2553 defines a prototype where the last
       parameter cnt is of type size_t.  Many systems follow RFC 2553.   Glibc
       2.0 and 2.1 have size_t, but 2.2 has socklen_t.

 

SEE ALSO


       inet_pton(3)

 

BUGS


       AF_INET6 converts IPv6-mapped IPv4 addresses into an IPv6 format.



Linux Man Page                    2000-12-18                      inet_ntop(3)