// DialUDP connects to the remote address raddr on the network net,
// which must be "udp", "udp4", or "udp6". If laddr is not nil, it is used
// as the local address for the connection.
func DialUDP(netType string, laddr, raddr *net.UDPAddr) (c *net.UDPConn, err os.Error) {
switch netType {
case "udp", "udp4", "udp6":
default:
return nil, net.UnknownNetworkError(netType)
}
if raddr == nil {
return nil, &net.OpError{"dial", "udp", nil, errMissingAddress}
}
fd, e := internetSocket(net, laddr.toAddr(), raddr.toAddr(), syscall.SOCK_DGRAM, 0, "dial", sockaddrToUDP)
if e != nil {
return nil, e
}
return newUDPConn(fd), nil
}