mirror of
https://github.com/v2fly/v2ray-core.git
synced 2024-11-04 09:17:32 -05:00
125 lines
3.1 KiB
Go
125 lines
3.1 KiB
Go
// +build !confonly
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package grpc
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import (
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"context"
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"google.golang.org/grpc"
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"google.golang.org/grpc/credentials"
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"github.com/v2fly/v2ray-core/v4/common"
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"github.com/v2fly/v2ray-core/v4/common/net"
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"github.com/v2fly/v2ray-core/v4/common/session"
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"github.com/v2fly/v2ray-core/v4/transport/internet"
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"github.com/v2fly/v2ray-core/v4/transport/internet/grpc/encoding"
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"github.com/v2fly/v2ray-core/v4/transport/internet/tls"
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)
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type Listener struct {
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encoding.UnimplementedGunServiceServer
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ctx context.Context
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handler internet.ConnHandler
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local net.Addr
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config *Config
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locker *internet.FileLocker // for unix domain socket
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s *grpc.Server
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}
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func (l Listener) Tun(server encoding.GunService_TunServer) error {
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tunCtx, cancel := context.WithCancel(l.ctx)
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l.handler(encoding.NewGunConn(server, cancel))
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<-tunCtx.Done()
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return nil
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}
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func (l Listener) Close() error {
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l.s.Stop()
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return nil
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}
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func (l Listener) Addr() net.Addr {
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return l.local
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}
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func Listen(ctx context.Context, address net.Address, port net.Port, settings *internet.MemoryStreamConfig, handler internet.ConnHandler) (internet.Listener, error) {
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grpcSettings := settings.ProtocolSettings.(*Config)
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var listener *Listener
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if port == net.Port(0) { // unix
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listener = &Listener{
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handler: handler,
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local: &net.UnixAddr{
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Name: address.Domain(),
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Net: "unix",
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},
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config: grpcSettings,
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}
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} else { // tcp
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listener = &Listener{
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handler: handler,
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local: &net.TCPAddr{
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IP: address.IP(),
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Port: int(port),
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},
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config: grpcSettings,
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}
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}
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listener.ctx = ctx
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config := tls.ConfigFromStreamSettings(settings)
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var s *grpc.Server
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if config == nil {
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s = grpc.NewServer()
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} else {
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s = grpc.NewServer(grpc.Creds(credentials.NewTLS(config.GetTLSConfig(tls.WithNextProto("h2")))))
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}
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listener.s = s
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if settings.SocketSettings != nil && settings.SocketSettings.AcceptProxyProtocol {
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newError("accepting PROXY protocol").AtWarning().WriteToLog(session.ExportIDToError(ctx))
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}
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go func() {
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var streamListener net.Listener
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var err error
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if port == net.Port(0) { // unix
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streamListener, err = internet.ListenSystem(ctx, &net.UnixAddr{
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Name: address.Domain(),
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Net: "unix",
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}, settings.SocketSettings)
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if err != nil {
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newError("failed to listen on ", address).Base(err).AtError().WriteToLog(session.ExportIDToError(ctx))
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return
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}
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locker := ctx.Value(address.Domain())
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if locker != nil {
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listener.locker = locker.(*internet.FileLocker)
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}
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} else { // tcp
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streamListener, err = internet.ListenSystem(ctx, &net.TCPAddr{
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IP: address.IP(),
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Port: int(port),
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}, settings.SocketSettings)
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if err != nil {
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newError("failed to listen on ", address, ":", port).Base(err).AtError().WriteToLog(session.ExportIDToError(ctx))
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return
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}
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}
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encoding.RegisterGunServiceServerX(s, listener, grpcSettings.ServiceName)
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if err = s.Serve(streamListener); err != nil {
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newError("Listener for grpc ended").Base(err).WriteToLog()
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}
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}()
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return listener, nil
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}
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func init() {
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common.Must(internet.RegisterTransportListener(protocolName, Listen))
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}
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