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scan_ip6if(3) [debian man page]

scan_ip6if(3)						     Library Functions Manual						     scan_ip6if(3)

NAME

       scan_ip6 - parse an IPv6 number and interface in ASCII representation

SYNTAX

       #include <ip6.h>

       int scan_ip6if(const char *src,char ip[16],uint32* scope_id);

DESCRIPTION

       scan_ip6if  parses an IPv6 number in RFC1884 ASCII representation from src and writes the result into ip. If the IPv6 number is followed by
       the percent sign, scan_ip6if takes the word following that, tries to parse it as network interface and writes the result to scope_id.

       It returns the number of bytes read from src or 0 if the parsing failed.

       scan_ip6if  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_ip6if 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_ip6if 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%lo";
	 char ip[16];
	 uint32 scope_id;
	 if (scan_ip6if(buf,ip,&scope_id) != str_len(buf))
	   parse_error();

SEE ALSO

       fmt_ip6(3), scan_ip4(3), fmt_ip6if(3)

																     scan_ip6if(3)

Check Out this Related Man Page

socket_send6(3) 					     Library Functions Manual						   socket_send6(3)

NAME

       socket_send6 - send a UDP datagram

SYNTAX

       #include <socket.h>

       ssize_t socket_send6(int s, const char* buf, size_t len,
		const char ip[16], uint16 port, uint32 scope_id);

DESCRIPTION

       socket_send6 sends len bytes starting at buf in a UDP datagram over the socket s to UDP port port on IP address ip.

       You can call socket_send6 without calling socket_bind6.	This has the effect as first calling socket_bind6 with IP address :: and port 0.

       The  meaning  of scope_id is dependent on the implementation and IPv6 IP.  On link-local IPv6 addresses it specifies the outgoing interface
       index.  The name (e.g. "eth0") for a given interface index can be queried with getifname.  scope_id should normally be set to 0.

RETURN VALUE

       socket_send6 returns 0 if the datagram was sent successfully.  If not, it returns -1 and sets errno appropriately.

EXAMPLE

	 #include <socket.h>

	 int s;
	 char ip[16];
	 uint16 p;
	 uint32 scope_id;

	 s = socket_tcp4();
	 socket_bind6(s,ip,p);
	 socket_send6(s,"hello, world",12,ip,p,scope_id);

SEE ALSO

       socket_send4(3), socket_getifidx(3)

																   socket_send6(3)
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