/
quic_server.go
132 lines (111 loc) · 3.49 KB
/
quic_server.go
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/*
* Copyright (C) 2020-2022, IrineSistiana
*
* This file is part of mosdns.
*
* mosdns is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* mosdns is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
package quic_server
import (
"crypto/tls"
"errors"
"fmt"
"net"
"time"
"github.com/IrineSistiana/mosdns/v5/coremain"
"github.com/IrineSistiana/mosdns/v5/pkg/server"
"github.com/IrineSistiana/mosdns/v5/pkg/utils"
"github.com/IrineSistiana/mosdns/v5/plugin/server/server_utils"
"github.com/quic-go/quic-go"
"go.uber.org/zap"
)
const PluginType = "quic_server"
func init() {
coremain.RegNewPluginFunc(PluginType, Init, func() any { return new(Args) })
}
type Args struct {
Entry string `yaml:"entry"`
Listen string `yaml:"listen"`
Cert string `yaml:"cert"`
Key string `yaml:"key"`
IdleTimeout int `yaml:"idle_timeout"`
}
func (a *Args) init() {
utils.SetDefaultNum(&a.IdleTimeout, 30)
}
type QuicServer struct {
args *Args
l *quic.Listener
}
func (s *QuicServer) Close() error {
return s.l.Close()
}
func Init(bp *coremain.BP, args any) (any, error) {
return StartServer(bp, args.(*Args))
}
func StartServer(bp *coremain.BP, args *Args) (*QuicServer, error) {
logger := bp.L()
dh, err := server_utils.NewHandler(bp, args.Entry)
if err != nil {
return nil, fmt.Errorf("failed to init dns handler, %w", err)
}
// Init tls
if len(args.Key) == 0 || len(args.Cert) == 0 {
return nil, errors.New("quic server requires a tls certificate")
}
tlsConfig := new(tls.Config)
if err := server.LoadCert(tlsConfig, args.Cert, args.Key); err != nil {
return nil, fmt.Errorf("failed to read tls cert, %w", err)
}
tlsConfig.NextProtos = []string{"doq"}
uc, err := net.ListenPacket("udp", args.Listen)
if err != nil {
return nil, fmt.Errorf("failed to listen socket, %w", err)
}
idleTimeout := time.Duration(args.IdleTimeout) * time.Second
quicConfig := &quic.Config{
MaxIdleTimeout: idleTimeout,
InitialStreamReceiveWindow: 4 * 1024,
MaxStreamReceiveWindow: 4 * 1024,
InitialConnectionReceiveWindow: 8 * 1024,
MaxConnectionReceiveWindow: 16 * 1024,
Allow0RTT: false,
// UniStream is not allowed.
MaxIncomingUniStreams: -1,
}
srk, _, err := utils.InitQUICSrkFromIfaceMac()
if err != nil {
logger.Warn("failed to init quic stateless reset key, it will be disabled", zap.Error(err))
}
qt := &quic.Transport{
Conn: uc,
StatelessResetKey: (*quic.StatelessResetKey)(srk),
}
quicListener, err := qt.Listen(tlsConfig, quicConfig)
if err != nil {
qt.Close()
return nil, fmt.Errorf("failed to listen quic, %w", err)
}
bp.L().Info("quic server started", zap.Stringer("addr", quicListener.Addr()))
go func() {
defer quicListener.Close()
serverOpts := server.DoQServerOpts{Logger: bp.L(), IdleTimeout: idleTimeout}
err := server.ServeDoQ(quicListener, dh, serverOpts)
bp.M().GetSafeClose().SendCloseSignal(err)
}()
return &QuicServer{
args: args,
l: quicListener,
}, nil
}