// 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 {
l, err := utp.Listen("utp", localAddr)
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()
}
// Listen announces on the local network address laddr.
// The Multiaddr must be a "ThinWaist" stream-oriented network:
// ip4/tcp, ip6/tcp, (TODO: unix, unixpacket)
// See Dial for the syntax of laddr.
func Listen(laddr ma.Multiaddr) (Listener, error) {
// get the net.Listen friendly arguments from the remote addr
lnet, lnaddr, err := DialArgs(laddr)
if err != nil {
return nil, err
}
var nl net.Listener
switch lnet {
case "utp":
nl, err = utp.Listen(lnet, lnaddr)
default:
nl, err = net.Listen(lnet, lnaddr)
}
if err != nil {
return nil, err
}
return &maListener{
Listener: nl,
laddr: laddr,
}, nil
}
func c2s(l int64, stream bool) float64 {
ln, err := utp.Listen("utp", "127.0.0.1:0")
if err != nil {
log.Fatal(err)
}
raddr, err := utp.ResolveUTPAddr("utp", ln.Addr().String())
if err != nil {
log.Fatal(err)
}
c, err := utp.DialUTPTimeout("utp", nil, raddr, 1000*time.Millisecond)
if err != nil {
log.Fatal(err)
}
defer c.Close()
if err != nil {
log.Fatal(err)
}
s, err := ln.Accept()
if err != nil {
log.Fatal(err)
}
defer s.Close()
ln.Close()
rch := make(chan int)
sendHash := md5.New()
readHash := md5.New()
counter := ByteCounter{}
var bps float64
if stream {
go func() {
defer c.Close()
io.Copy(io.MultiWriter(c, sendHash, &counter), io.LimitReader(RandReader{}, l))
}()
go func() {
io.Copy(readHash, s)
close(rch)
}()
go func() {
for {
select {
case <-time.After(time.Second):
if *h {
fmt.Printf("\r <--> %s ", humanize.IBytes(uint64(counter.Length())))
} else {
fmt.Printf("\r <--> %d ", counter.Length())
}
case <-rch:
fmt.Printf("\r")
return
}
}
}()
start := time.Now()
<-rch
bps = float64(l*8) / (float64(time.Now().Sub(start)) / float64(time.Second))
} else {
var sendBuf, readBuf bytes.Buffer
io.Copy(io.MultiWriter(&sendBuf, sendHash), io.LimitReader(RandReader{}, l))
go func() {
defer c.Close()
io.Copy(c, &sendBuf)
}()
go func() {
io.Copy(&readBuf, s)
rch <- 0
}()
start := time.Now()
<-rch
bps = float64(l*8) / (float64(time.Now().Sub(start)) / float64(time.Second))
io.Copy(sendHash, &sendBuf)
io.Copy(readHash, &readBuf)
}
if !bytes.Equal(sendHash.Sum(nil), readHash.Sum(nil)) {
log.Fatal("Broken payload")
}
return bps
}