ip6_addr.c File Reference

#include "lwip/opt.h"
#include "lwip/ip_addr.h"
#include "lwip/def.h"
#include <string.h>
#include "lwip/ip4_addr.h"

Functions
int	ip6addr_aton (const char *cp, ip6_addr_t *addr)
char *	ip6addr_ntoa (const ip6_addr_t *addr)
char *	ip6addr_ntoa_r (const ip6_addr_t *addr, char *buf, int buflen)

Detailed Description

IPv6 addresses.

Function Documentation

ip6addr_aton()

int ip6addr_aton	(	const char *	cp,
		ip6_addr_t *	addr
	)

Check whether "cp" is a valid ascii representation of an IPv6 address and convert to a binary address. Returns 1 if the address is valid, 0 if not.

Parameters

cp	IPv6 address in ascii representation (e.g. "FF01::1")
addr	pointer to which to save the ip address in network order

Returns

1 if cp could be converted to addr, 0 on failure

ip6addr_ntoa()

char* ip6addr_ntoa

(

const ip6_addr_t *

addr

)

Convert numeric IPv6 address into ASCII representation. returns ptr to static buffer; not reentrant!

Parameters

addr	ip6 address in network order to convert

Returns

pointer to a global static (!) buffer that holds the ASCII representation of addr

ip6addr_ntoa_r()

char* ip6addr_ntoa_r	(	const ip6_addr_t *	addr,
		char *	buf,
		int	buflen
	)

Same as ipaddr_ntoa, but reentrant since a user-supplied buffer is used.

Parameters

addr	ip6 address in network order to convert
buf	target buffer where the string is stored
buflen	length of buf

Returns

either pointer to buf which now holds the ASCII representation of addr or NULL if buf was too small