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v2ray-core/transport/internet/tcp/dialer.go

51 lines
1.5 KiB

package tcp
import (
"context"
"v2ray.com/core/common"
"v2ray.com/core/common/net"
"v2ray.com/core/common/session"
"v2ray.com/core/transport/internet"
"v2ray.com/core/transport/internet/tls"
)
func getTCPSettingsFromContext(ctx context.Context) *Config {
rawTCPSettings := internet.StreamSettingsFromContext(ctx)
if rawTCPSettings == nil {
return nil
}
return rawTCPSettings.ProtocolSettings.(*Config)
}
// Dial dials a new TCP connection to the given destination.
func Dial(ctx context.Context, dest net.Destination) (internet.Connection, error) {
newError("dialing TCP to ", dest).WriteToLog(session.ExportIDToError(ctx))
conn, err := internet.DialSystem(ctx, dest)
if err != nil {
return nil, err
}
if config := tls.ConfigFromContext(ctx); config != nil {
conn = tls.Client(conn, config.GetTLSConfig(tls.WithDestination(dest), tls.WithNextProto("h2")))
}
tcpSettings := getTCPSettingsFromContext(ctx)
if tcpSettings != nil && 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 internet.Connection(conn), nil
}
func init() {
common.Must(internet.RegisterTransportDialer(protocolName, Dial))
}