Exemplo n.º 1
0
//Copy from golang source
func anyToSockaddr(rsa *syscall.RawSockaddrAny) (syscall.Sockaddr, error) {
	switch rsa.Addr.Family {
	case syscall.AF_INET:
		pp := (*syscall.RawSockaddrInet4)(unsafe.Pointer(rsa))
		sa := new(syscall.SockaddrInet4)
		p := (*[2]byte)(unsafe.Pointer(&pp.Port))
		sa.Port = int(p[0])<<8 + int(p[1])
		for i := 0; i < len(sa.Addr); i++ {
			sa.Addr[i] = pp.Addr[i]
		}
		return sa, nil

	case syscall.AF_INET6:
		pp := (*syscall.RawSockaddrInet6)(unsafe.Pointer(rsa))
		sa := new(syscall.SockaddrInet6)
		p := (*[2]byte)(unsafe.Pointer(&pp.Port))
		sa.Port = int(p[0])<<8 + int(p[1])
		sa.ZoneId = pp.Scope_id
		for i := 0; i < len(sa.Addr); i++ {
			sa.Addr[i] = pp.Addr[i]
		}
		return sa, nil
	}
	return nil, syscall.EAFNOSUPPORT
}
Exemplo n.º 2
0
func ipToSockaddr(family int, ip IP, port int, zone string) (syscall.Sockaddr, error) {
	switch family {
	case syscall.AF_INET:
		if len(ip) == 0 {
			ip = IPv4zero
		}
		if ip = ip.To4(); ip == nil {
			return nil, InvalidAddrError("non-IPv4 address")
		}
		sa := new(syscall.SockaddrInet4)
		for i := 0; i < IPv4len; i++ {
			sa.Addr[i] = ip[i]
		}
		sa.Port = port
		return sa, nil
	case syscall.AF_INET6:
		if len(ip) == 0 {
			ip = IPv6zero
		}
		// IPv4 callers use 0.0.0.0 to mean "announce on any available address".
		// In IPv6 mode, Linux treats that as meaning "announce on 0.0.0.0",
		// which it refuses to do.  Rewrite to the IPv6 unspecified address.
		if ip.Equal(IPv4zero) {
			ip = IPv6zero
		}
		if ip = ip.To16(); ip == nil {
			return nil, InvalidAddrError("non-IPv6 address")
		}
		sa := new(syscall.SockaddrInet6)
		for i := 0; i < IPv6len; i++ {
			sa.Addr[i] = ip[i]
		}
		sa.Port = port
		sa.ZoneId = uint32(zoneToInt(zone))
		return sa, nil
	}
	return nil, InvalidAddrError("unexpected socket family")
}