socket_info - retrieving IP connection information for an existing socket

NAME SYNTAX DESCRIPTION RETURN CODES EXAMPLE SEE ALSO

NAME

socket_info − retrieving IP connection information for an existing socket

SYNTAX

#include "socket_if.h"

int socket_local(int s,char ip[16],
uint16 *port,uint32 *scope_id);

int socket_remote(int s,char ip[16],
uint16 *port,uint32 *scope_id);

DESCRIPTION

socket_local returns the local IPv6 or IPv4-mapped IPv6 address as ip, port as port and perhaps the scope_id as scope_id for the UDP or TCP socket.

socket_remote returns the remote IPv6 or IPv4-mapped IPv6 address as ip, port as port and perhaps the scope_id as scope_id for the UDP or TCP socket.

RETURN CODES

If something goes wrong, socket_local and socket_remote return -1, setting errno appropriately.

EXAMPLE

#include <socket_if.h>
int s;
char ip[16];
uint16 port;

if (socket_remote(s,ip,&port,0) == -1)
err_tmp("",111,"unable to get remote address: ");