mirror of https://github.com/XTLS/Xray-core
138 lines
3.2 KiB
Go
138 lines
3.2 KiB
Go
package quic
|
|
|
|
import (
|
|
"context"
|
|
"time"
|
|
|
|
"github.com/lucas-clemente/quic-go"
|
|
|
|
"github.com/xtls/xray-core/common"
|
|
"github.com/xtls/xray-core/common/net"
|
|
"github.com/xtls/xray-core/common/protocol/tls/cert"
|
|
"github.com/xtls/xray-core/common/signal/done"
|
|
"github.com/xtls/xray-core/transport/internet"
|
|
"github.com/xtls/xray-core/transport/internet/tls"
|
|
)
|
|
|
|
// Listener is an internet.Listener that listens for TCP connections.
|
|
type Listener struct {
|
|
rawConn *sysConn
|
|
listener quic.Listener
|
|
done *done.Instance
|
|
addConn internet.ConnHandler
|
|
}
|
|
|
|
func (l *Listener) acceptStreams(session quic.Session) {
|
|
for {
|
|
stream, err := session.AcceptStream(context.Background())
|
|
if err != nil {
|
|
newError("failed to accept stream").Base(err).WriteToLog()
|
|
select {
|
|
case <-session.Context().Done():
|
|
return
|
|
case <-l.done.Wait():
|
|
if err := session.CloseWithError(0, ""); err != nil {
|
|
newError("failed to close session").Base(err).WriteToLog()
|
|
}
|
|
return
|
|
default:
|
|
time.Sleep(time.Second)
|
|
continue
|
|
}
|
|
}
|
|
|
|
conn := &interConn{
|
|
stream: stream,
|
|
local: session.LocalAddr(),
|
|
remote: session.RemoteAddr(),
|
|
}
|
|
|
|
l.addConn(conn)
|
|
}
|
|
}
|
|
|
|
func (l *Listener) keepAccepting() {
|
|
for {
|
|
conn, err := l.listener.Accept(context.Background())
|
|
if err != nil {
|
|
newError("failed to accept QUIC sessions").Base(err).WriteToLog()
|
|
if l.done.Done() {
|
|
break
|
|
}
|
|
time.Sleep(time.Second)
|
|
continue
|
|
}
|
|
go l.acceptStreams(conn)
|
|
}
|
|
}
|
|
|
|
// Addr implements internet.Listener.Addr.
|
|
func (l *Listener) Addr() net.Addr {
|
|
return l.listener.Addr()
|
|
}
|
|
|
|
// Close implements internet.Listener.Close.
|
|
func (l *Listener) Close() error {
|
|
l.done.Close()
|
|
l.listener.Close()
|
|
l.rawConn.Close()
|
|
return nil
|
|
}
|
|
|
|
// Listen creates a new Listener based on configurations.
|
|
func Listen(ctx context.Context, address net.Address, port net.Port, streamSettings *internet.MemoryStreamConfig, handler internet.ConnHandler) (internet.Listener, error) {
|
|
if address.Family().IsDomain() {
|
|
return nil, newError("domain address is not allows for listening quic")
|
|
}
|
|
|
|
tlsConfig := tls.ConfigFromStreamSettings(streamSettings)
|
|
if tlsConfig == nil {
|
|
tlsConfig = &tls.Config{
|
|
Certificate: []*tls.Certificate{tls.ParseCertificate(cert.MustGenerate(nil, cert.DNSNames(internalDomain), cert.CommonName(internalDomain)))},
|
|
}
|
|
}
|
|
|
|
config := streamSettings.ProtocolSettings.(*Config)
|
|
rawConn, err := internet.ListenSystemPacket(context.Background(), &net.UDPAddr{
|
|
IP: address.IP(),
|
|
Port: int(port),
|
|
}, streamSettings.SocketSettings)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
quicConfig := &quic.Config{
|
|
ConnectionIDLength: 12,
|
|
KeepAlive: true,
|
|
MaxIncomingStreams: 32,
|
|
MaxIncomingUniStreams: -1,
|
|
}
|
|
|
|
conn, err := wrapSysConn(rawConn.(*net.UDPConn), config)
|
|
if err != nil {
|
|
conn.Close()
|
|
return nil, err
|
|
}
|
|
|
|
qListener, err := quic.Listen(conn, tlsConfig.GetTLSConfig(), quicConfig)
|
|
if err != nil {
|
|
conn.Close()
|
|
return nil, err
|
|
}
|
|
|
|
listener := &Listener{
|
|
done: done.New(),
|
|
rawConn: conn,
|
|
listener: qListener,
|
|
addConn: handler,
|
|
}
|
|
|
|
go listener.keepAccepting()
|
|
|
|
return listener, nil
|
|
}
|
|
|
|
func init() {
|
|
common.Must(internet.RegisterTransportListener(protocolName, Listen))
|
|
}
|