Xray-core/transport/internet/tcp/dialer.go

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package tcp
import (
"context"
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"github.com/xtls/xray-core/common"
"github.com/xtls/xray-core/common/net"
"github.com/xtls/xray-core/common/session"
"github.com/xtls/xray-core/transport/internet"
"github.com/xtls/xray-core/transport/internet/reality"
"github.com/xtls/xray-core/transport/internet/stat"
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"github.com/xtls/xray-core/transport/internet/tls"
"github.com/xtls/xray-core/transport/internet/xtls"
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)
// Dial dials a new TCP connection to the given destination.
func Dial(ctx context.Context, dest net.Destination, streamSettings *internet.MemoryStreamConfig) (stat.Connection, error) {
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newError("dialing TCP to ", dest).WriteToLog(session.ExportIDToError(ctx))
conn, err := internet.DialSystem(ctx, dest, streamSettings.SocketSettings)
if err != nil {
return nil, err
}
if config := tls.ConfigFromStreamSettings(streamSettings); config != nil {
tlsConfig := config.GetTLSConfig(tls.WithDestination(dest))
if fingerprint := tls.GetFingerprint(config.Fingerprint); fingerprint != nil {
conn = tls.UClient(conn, tlsConfig, fingerprint)
if err := conn.(*tls.UConn).Handshake(); err != nil {
return nil, err
}
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} else {
conn = tls.Client(conn, tlsConfig)
}
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} else if config := xtls.ConfigFromStreamSettings(streamSettings); config != nil {
xtlsConfig := config.GetXTLSConfig(xtls.WithDestination(dest))
conn = xtls.Client(conn, xtlsConfig)
} else if config := reality.ConfigFromStreamSettings(streamSettings); config != nil {
if conn, err = reality.UClient(conn, config, ctx, dest); err != nil {
return nil, err
}
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}
tcpSettings := streamSettings.ProtocolSettings.(*Config)
if tcpSettings.HeaderSettings != nil {
headerConfig, err := tcpSettings.HeaderSettings.GetInstance()
if err != nil {
return nil, newError("failed to get header settings").Base(err).AtError()
}
auth, err := internet.CreateConnectionAuthenticator(headerConfig)
if err != nil {
return nil, newError("failed to create header authenticator").Base(err).AtError()
}
conn = auth.Client(conn)
}
return stat.Connection(conn), nil
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}
func init() {
common.Must(internet.RegisterTransportDialer(protocolName, Dial))
}