package dialer import ( "context" "net" "time" "github.com/sagernet/sing-box/adapter" "github.com/sagernet/sing-box/common/warning" C "github.com/sagernet/sing-box/constant" "github.com/sagernet/sing-box/option" "github.com/sagernet/sing/common/control" M "github.com/sagernet/sing/common/metadata" N "github.com/sagernet/sing/common/network" "github.com/database64128/tfo-go" ) var warnBindInterfaceOnUnsupportedPlatform = warning.New( func() bool { return !(C.IsLinux || C.IsWindows) }, "outbound option `bind_interface` is only supported on Linux and Windows", ) var warnRoutingMarkOnUnsupportedPlatform = warning.New( func() bool { return !C.IsLinux }, "outbound option `routing_mark` is only supported on Linux", ) var warnReuseAdderOnUnsupportedPlatform = warning.New( func() bool { return !(C.IsDarwin || C.IsDragonfly || C.IsFreebsd || C.IsLinux || C.IsNetbsd || C.IsOpenbsd || C.IsSolaris || C.IsWindows) }, "outbound option `reuse_addr` is unsupported on current platform", ) var warnProtectPathOnNonAndroid = warning.New( func() bool { return !C.IsAndroid }, "outbound option `protect_path` is only supported on Android", ) var warnTFOOnUnsupportedPlatform = warning.New( func() bool { return !(C.IsDarwin || C.IsFreebsd || C.IsLinux || C.IsWindows) }, "outbound option `tcp_fast_open` is unsupported on current platform", ) type DefaultDialer struct { tfo.Dialer net.ListenConfig } func NewDefault(router adapter.Router, options option.DialerOptions) *DefaultDialer { var dialer net.Dialer var listener net.ListenConfig if options.BindInterface != "" { warnBindInterfaceOnUnsupportedPlatform.Check() dialer.Control = control.Append(dialer.Control, control.BindToInterface(router.InterfaceBindManager(), options.BindInterface)) listener.Control = control.Append(listener.Control, control.BindToInterface(router.InterfaceBindManager(), options.BindInterface)) } else if router.AutoDetectInterface() { if C.IsWindows { dialer.Control = control.Append(dialer.Control, control.BindToInterfaceIndexFunc(func() int { return router.AutoDetectInterfaceIndex() })) listener.Control = control.Append(listener.Control, control.BindToInterfaceIndexFunc(func() int { return router.AutoDetectInterfaceIndex() })) } else { dialer.Control = control.Append(dialer.Control, control.BindToInterfaceFunc(router.InterfaceBindManager(), func() string { return router.AutoDetectInterfaceName() })) listener.Control = control.Append(listener.Control, control.BindToInterfaceFunc(router.InterfaceBindManager(), func() string { return router.AutoDetectInterfaceName() })) } } else if router.DefaultInterface() != "" { dialer.Control = control.Append(dialer.Control, control.BindToInterface(router.InterfaceBindManager(), router.DefaultInterface())) listener.Control = control.Append(listener.Control, control.BindToInterface(router.InterfaceBindManager(), router.DefaultInterface())) } if options.RoutingMark != 0 { warnRoutingMarkOnUnsupportedPlatform.Check() dialer.Control = control.Append(dialer.Control, control.RoutingMark(options.RoutingMark)) listener.Control = control.Append(listener.Control, control.RoutingMark(options.RoutingMark)) } else if router.DefaultMark() != 0 { dialer.Control = control.Append(dialer.Control, control.RoutingMark(router.DefaultMark())) listener.Control = control.Append(listener.Control, control.RoutingMark(router.DefaultMark())) } if options.ReuseAddr { warnReuseAdderOnUnsupportedPlatform.Check() listener.Control = control.Append(listener.Control, control.ReuseAddr()) } if options.ProtectPath != "" { warnProtectPathOnNonAndroid.Check() dialer.Control = control.Append(dialer.Control, control.ProtectPath(options.ProtectPath)) listener.Control = control.Append(listener.Control, control.ProtectPath(options.ProtectPath)) } if options.ConnectTimeout != 0 { dialer.Timeout = time.Duration(options.ConnectTimeout) } else { dialer.Timeout = C.TCPTimeout } if options.TCPFastOpen { warnTFOOnUnsupportedPlatform.Check() } return &DefaultDialer{tfo.Dialer{Dialer: dialer, DisableTFO: !options.TCPFastOpen}, listener} } func (d *DefaultDialer) DialContext(ctx context.Context, network string, address M.Socksaddr) (net.Conn, error) { return d.Dialer.DialContext(ctx, network, address.Unwrap().String()) } func (d *DefaultDialer) ListenPacket(ctx context.Context, destination M.Socksaddr) (net.PacketConn, error) { return d.ListenConfig.ListenPacket(ctx, N.NetworkUDP, "") } func (d *DefaultDialer) Upstream() any { return &d.Dialer }