mirror of
https://github.com/v2fly/v2ray-core.git
synced 2024-07-08 06:14:23 -04:00
106 lines
2.4 KiB
Go
106 lines
2.4 KiB
Go
package tcp
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import (
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"context"
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gotls "crypto/tls"
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"v2ray.com/core/app/log"
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"v2ray.com/core/common"
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"v2ray.com/core/common/net"
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"v2ray.com/core/common/retry"
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"v2ray.com/core/transport/internet"
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"v2ray.com/core/transport/internet/tls"
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)
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type TCPListener struct {
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ctx context.Context
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listener *net.TCPListener
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tlsConfig *gotls.Config
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authConfig internet.ConnectionAuthenticator
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config *Config
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addConn internet.AddConnection
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}
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func ListenTCP(ctx context.Context, address net.Address, port net.Port, addConn internet.AddConnection) (internet.Listener, error) {
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listener, err := net.ListenTCP("tcp", &net.TCPAddr{
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IP: address.IP(),
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Port: int(port),
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})
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if err != nil {
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return nil, err
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}
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log.Trace(newError("listening TCP on ", address, ":", port))
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networkSettings := internet.TransportSettingsFromContext(ctx)
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tcpSettings := networkSettings.(*Config)
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l := &TCPListener{
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ctx: ctx,
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listener: listener,
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config: tcpSettings,
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addConn: addConn,
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}
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if securitySettings := internet.SecuritySettingsFromContext(ctx); securitySettings != nil {
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tlsConfig, ok := securitySettings.(*tls.Config)
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if ok {
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l.tlsConfig = tlsConfig.GetTLSConfig()
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}
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}
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if tcpSettings.HeaderSettings != nil {
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headerConfig, err := tcpSettings.HeaderSettings.GetInstance()
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if err != nil {
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return nil, newError("invalid header settings").Base(err).AtError()
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}
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auth, err := internet.CreateConnectionAuthenticator(headerConfig)
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if err != nil {
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return nil, newError("invalid header settings.").Base(err).AtError()
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}
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l.authConfig = auth
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}
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go l.KeepAccepting()
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return l, nil
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}
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func (v *TCPListener) KeepAccepting() {
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for {
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select {
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case <-v.ctx.Done():
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return
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default:
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}
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var conn net.Conn
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err := retry.ExponentialBackoff(5, 200).On(func() error {
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rawConn, err := v.listener.Accept()
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if err != nil {
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return err
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}
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conn = rawConn
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return nil
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})
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if err != nil {
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log.Trace(newError("failed to accepted raw connections").Base(err).AtWarning())
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continue
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}
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if v.tlsConfig != nil {
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conn = tls.Server(conn, v.tlsConfig)
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}
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if v.authConfig != nil {
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conn = v.authConfig.Server(conn)
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}
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v.addConn(context.Background(), internet.Connection(conn))
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}
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}
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func (v *TCPListener) Addr() net.Addr {
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return v.listener.Addr()
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}
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func (v *TCPListener) Close() error {
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return v.listener.Close()
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}
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func init() {
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common.Must(internet.RegisterTransportListener(internet.TransportProtocol_TCP, ListenTCP))
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}
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