mirror of
https://github.com/v2fly/v2ray-core.git
synced 2024-12-23 02:26:49 -05:00
103 lines
2.5 KiB
Go
103 lines
2.5 KiB
Go
// +build !confonly
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package tcp
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import (
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"context"
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gotls "crypto/tls"
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"strings"
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"time"
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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/session"
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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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// Listener is an internet.Listener that listens for TCP connections.
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type Listener struct {
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listener net.Listener
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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.ConnHandler
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}
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// ListenTCP creates a new Listener based on configurations.
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func ListenTCP(ctx context.Context, address net.Address, port net.Port, streamSettings *internet.MemoryStreamConfig, handler internet.ConnHandler) (internet.Listener, error) {
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listener, err := internet.ListenSystem(ctx, &net.TCPAddr{
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IP: address.IP(),
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Port: int(port),
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}, streamSettings.SocketSettings)
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if err != nil {
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return nil, err
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}
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newError("listening TCP on ", address, ":", port).WriteToLog(session.ExportIDToError(ctx))
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tcpSettings := streamSettings.ProtocolSettings.(*Config)
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l := &Listener{
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listener: listener,
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config: tcpSettings,
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addConn: handler,
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}
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if config := tls.ConfigFromStreamSettings(streamSettings); config != nil {
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l.tlsConfig = config.GetTLSConfig(tls.WithNextProto("h2"))
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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 *Listener) keepAccepting() {
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for {
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conn, err := v.listener.Accept()
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if err != nil {
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errStr := err.Error()
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if strings.Contains(errStr, "closed") {
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break
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}
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newError("failed to accepted raw connections").Base(err).AtWarning().WriteToLog()
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if strings.Contains(errStr, "too many") {
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time.Sleep(time.Millisecond * 500)
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}
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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(internet.Connection(conn))
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}
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}
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// Addr implements internet.Listener.Addr.
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func (v *Listener) Addr() net.Addr {
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return v.listener.Addr()
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}
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// Close implements internet.Listener.Close.
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func (v *Listener) 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(protocolName, ListenTCP))
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}
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