// Dial connects to a remote address and pipes all os.Stdin to the remote end.
// If localAddr is set, uses it to Dial from.
func Dial(localAddr, remoteAddr string) error {
var laddr net.Addr
var err error
if localAddr != "" {
laddr, err = utp.ResolveAddr("utp", localAddr)
if err != nil {
return fmt.Errorf("failed to resolve address %s", localAddr)
}
}
if laddr != nil {
log("dialing %s from %s", remoteAddr, laddr)
} else {
log("dialing %s", remoteAddr)
}
d := utp.Dialer{LocalAddr: laddr}
c, err := d.Dial("utp", remoteAddr)
if err != nil {
return err
}
log("connected to %s", c.RemoteAddr())
netcat(c)
return c.Close()
}
// Listen listens and accepts one incoming uTP connection on a given port,
// and pipes all incoming data to os.Stdout.
func Listen(localAddr string) error {
laddr, err := utp.ResolveAddr("utp", localAddr)
if err != nil {
return fmt.Errorf("failed to resolve address %s", localAddr)
}
l, err := utp.Listen("utp", laddr)
if err != nil {
return err
}
log("listening at %s", l.Addr())
c, err := l.Accept()
if err != nil {
return err
}
log("accepted connection from %s", c.RemoteAddr())
// should be able to close listener here, but utp.Listener.Close
// closes all open connections.
defer l.Close()
netcat(c)
return c.Close()
}