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package singbridge
import (
"context"
"os"
M "github.com/sagernet/sing/common/metadata"
N "github.com/sagernet/sing/common/network"
"github.com/xtls/xray-core/common/net"
"github.com/xtls/xray-core/common/net/cnc"
"github.com/xtls/xray-core/common/session"
"github.com/xtls/xray-core/proxy"
"github.com/xtls/xray-core/transport"
"github.com/xtls/xray-core/transport/internet"
"github.com/xtls/xray-core/transport/pipe"
)
var _ N.Dialer = (*XrayDialer)(nil)
type XrayDialer struct {
internet.Dialer
}
func NewDialer(dialer internet.Dialer) *XrayDialer {
return &XrayDialer{dialer}
}
func (d *XrayDialer) DialContext(ctx context.Context, network string, destination M.Socksaddr) (net.Conn, error) {
return d.Dialer.Dial(ctx, ToDestination(destination, ToNetwork(network)))
}
func (d *XrayDialer) ListenPacket(ctx context.Context, destination M.Socksaddr) (net.PacketConn, error) {
return nil, os.ErrInvalid
}
type XrayOutboundDialer struct {
outbound proxy.Outbound
dialer internet.Dialer
}
func NewOutboundDialer(outbound proxy.Outbound, dialer internet.Dialer) *XrayOutboundDialer {
return &XrayOutboundDialer{outbound, dialer}
}
func (d *XrayOutboundDialer) DialContext(ctx context.Context, network string, destination M.Socksaddr) (net.Conn, error) {
outbounds := session.OutboundsFromContext(ctx)
if len(outbounds) == 0 {
outbounds = []*session.Outbound{{}}
ctx = session.ContextWithOutbounds(ctx, outbounds)
}
ob := outbounds[len(outbounds)-1]
ob.Target = ToDestination(destination, ToNetwork(network))
opts := []pipe.Option{pipe.WithSizeLimit(64 * 1024)}
uplinkReader, uplinkWriter := pipe.New(opts...)
downlinkReader, downlinkWriter := pipe.New(opts...)
conn := cnc.NewConnection(cnc.ConnectionInputMulti(downlinkWriter), cnc.ConnectionOutputMulti(uplinkReader))
go d.outbound.Process(ctx, &transport.Link{Reader: downlinkReader, Writer: uplinkWriter}, d.dialer)
return conn, nil
}
func (d *XrayOutboundDialer) ListenPacket(ctx context.Context, destination M.Socksaddr) (net.PacketConn, error) {
return nil, os.ErrInvalid
}