libowfat/socket/socket_connect6.c

#include <sys/param.h>
#include <sys/types.h>
#ifndef __MINGW32__
#include <sys/socket.h>
#include <netinet/in.h>
#endif
#include "windoze.h"
#include <errno.h>
#include "byte.h"
#include "socket.h"
#include "ip6.h"
#include "haveip6.h"
#include "uint32.h"
#include "ip4.h"
#include "havescope.h"

int socket_connect6(int s,const char ip[16],uint16 port,uint32 scope_id)
{
#ifdef LIBC_HAS_IP6
  struct sockaddr_in6 sa;

  if (noipv6) {
#endif
    if (ip6_isv4mapped(ip))
      return winsock2errno(socket_connect4(s,ip+12,port));
    if (byte_equal(ip,16,V6loopback))
      return winsock2errno(socket_connect4(s,ip4loopback,port));
#ifdef LIBC_HAS_IP6
  }
  byte_zero(&sa,sizeof sa);
  sa.sin6_family = PF_INET6;
  uint16_pack_big((char *) &sa.sin6_port,port);
  sa.sin6_flowinfo = 0;
#ifdef LIBC_HAS_SCOPE_ID
  sa.sin6_scope_id = scope_id;
#endif
  byte_copy((char *) &sa.sin6_addr,16,ip);

  return winsock2errno(connect(s,(void*) &sa,sizeof sa));
#else
  errno=EPROTONOSUPPORT;
  return -1;
#endif
}