mirror of
https://github.com/SagerNet/sing-box.git
synced 2024-09-20 10:37:51 +00:00
69 lines
1.6 KiB
Go
69 lines
1.6 KiB
Go
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package dialer
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import (
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"context"
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"crypto/tls"
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"net"
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C "github.com/sagernet/sing-box/constant"
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"github.com/sagernet/sing-box/option"
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M "github.com/sagernet/sing/common/metadata"
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N "github.com/sagernet/sing/common/network"
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"github.com/sagernet/sing/common/uot"
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)
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var _ N.Dialer = (*overrideDialer)(nil)
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type overrideDialer struct {
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upstream N.Dialer
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tlsEnabled bool
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tlsConfig tls.Config
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uotEnabled bool
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}
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func newOverride(upstream N.Dialer, options option.OverrideStreamOptions) N.Dialer {
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if !options.TLS && !options.UDPOverTCP {
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return upstream
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}
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return &overrideDialer{
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upstream,
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options.TLS,
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tls.Config{
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ServerName: options.TLSServerName,
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InsecureSkipVerify: options.TLSInsecure,
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},
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options.UDPOverTCP,
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}
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}
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func (d *overrideDialer) DialContext(ctx context.Context, network string, destination M.Socksaddr) (net.Conn, error) {
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switch network {
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case C.NetworkTCP:
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conn, err := d.upstream.DialContext(ctx, C.NetworkTCP, destination)
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if err != nil {
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return nil, err
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}
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return tls.Client(conn, &d.tlsConfig), nil
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case C.NetworkUDP:
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if d.uotEnabled {
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tcpConn, err := d.upstream.DialContext(ctx, C.NetworkTCP, destination)
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if err != nil {
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return nil, err
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}
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return uot.NewClientConn(tcpConn), nil
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}
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}
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return d.upstream.DialContext(ctx, network, destination)
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}
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func (d *overrideDialer) ListenPacket(ctx context.Context, destination M.Socksaddr) (net.PacketConn, error) {
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if d.uotEnabled {
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tcpConn, err := d.upstream.DialContext(ctx, C.NetworkTCP, destination)
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if err != nil {
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return nil, err
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}
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return uot.NewClientConn(tcpConn), nil
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}
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return d.upstream.ListenPacket(ctx, destination)
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}
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