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// +build !confonly
package quic
import (
"context"
"time"
"github.com/quic-go/quic-go"
"v2ray.com/core/common"
"v2ray.com/core/common/net"
"v2ray.com/core/common/protocol/tls/cert"
"v2ray.com/core/common/signal/done"
"v2ray.com/core/transport/internet"
"v2ray.com/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(conn quic.Connection) {
for {
stream, err := conn.AcceptStream(context.Background())
if err != nil {
newError("failed to accept stream").Base(err).WriteToLog()
select {
case <-conn.Context().Done():
return
case <-l.done.Wait():
if err := conn.CloseWithError(0, ""); err != nil {
newError("failed to close connection").Base(err).WriteToLog()
}
return
default:
time.Sleep(time.Second)
continue
}
}
conn := &interConn{
stream: stream,
local: conn.LocalAddr(),
remote: conn.RemoteAddr(),
}
l.addConn(conn)
}
}
func (l *Listener) keepAccepting() {
for {
conn, err := l.listener.Accept(context.Background())
if err != nil {
newError("failed to accept QUIC connections").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{
HandshakeIdleTimeout: time.Second * 8,
MaxIdleTimeout: time.Second * 45,
MaxIncomingStreams: 32,
MaxIncomingUniStreams: -1,
}
conn, err := wrapSysConn(rawConn, config)
if err != nil {
conn.Close()
return nil, err
}
tr := quic.Transport{
Conn: conn,
ConnectionIDLength: 12,
}
qListener, err := tr.Listen(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))
}
|
