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scan_ip6(3)           DragonFly Library Functions Manual           scan_ip6(3)

NAME
       scan_ip6 - parse an IPv6 number in ASCII representation

SYNTAX
       #include <ip6.h>

       int scan_ip6(const char *src,char ip[16]);

DESCRIPTION
       scan_ip6 parses an IPv6 number in RFC1884 ASCII representation from src
       and writes the result into ip. It returns the number of bytes read from
       src or 0 if the parsing failed.

       scan_ip6 accepts upper and lower case hex letters, it understands "::"
       compression and partial IPv4 addresses as in "::FFFF:129.144.52.38".

       To allow transparent usage of IPv4 in IPv6 applications, scan_ip6 also
       understands IPv4 addresses in dotted-decimal notation and will return
       an IPv4-mapped IPv6 address (i.e. "127.0.0.1" will be parsed as
       "::FFFF:127.0.0.1".

       Unlike many other IP parsing routines, scan_ip6 does not recognize
       octal (like 0177.0.0.1) or hexadecimal numbers (like 0x7f000001) in the
       IPv4 part.

EXAMPLE
       #include <str.h>
       #include <ip6.h>

         char buf[]="::1";
         char ip[16];
         if (scan_ip6(buf,ip) != str_len(buf))
           parse_error();

SEE ALSO
       fmt_ip6(3), scan_ip4(3), inet_pton(3)

                                                                   scan_ip6(3)