mirror of
https://github.com/SagerNet/sing-box.git
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118 lines
3.6 KiB
Go
118 lines
3.6 KiB
Go
package hysteria2
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import (
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"context"
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"net"
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"os"
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"github.com/sagernet/sing-box/adapter"
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"github.com/sagernet/sing-box/adapter/outbound"
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"github.com/sagernet/sing-box/common/dialer"
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"github.com/sagernet/sing-box/common/tls"
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C "github.com/sagernet/sing-box/constant"
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"github.com/sagernet/sing-box/log"
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"github.com/sagernet/sing-box/option"
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"github.com/sagernet/sing-box/protocol/tuic"
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"github.com/sagernet/sing-quic/hysteria"
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"github.com/sagernet/sing-quic/hysteria2"
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"github.com/sagernet/sing/common"
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"github.com/sagernet/sing/common/bufio"
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E "github.com/sagernet/sing/common/exceptions"
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"github.com/sagernet/sing/common/logger"
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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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)
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func RegisterOutbound(registry *outbound.Registry) {
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outbound.Register[option.Hysteria2OutboundOptions](registry, C.TypeHysteria2, NewOutbound)
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}
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var (
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_ adapter.Outbound = (*tuic.Outbound)(nil)
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_ adapter.InterfaceUpdateListener = (*tuic.Outbound)(nil)
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)
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type Outbound struct {
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outbound.Adapter
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logger logger.ContextLogger
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client *hysteria2.Client
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}
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func NewOutbound(ctx context.Context, router adapter.Router, logger log.ContextLogger, tag string, options option.Hysteria2OutboundOptions) (adapter.Outbound, error) {
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options.UDPFragmentDefault = true
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if options.TLS == nil || !options.TLS.Enabled {
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return nil, C.ErrTLSRequired
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}
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tlsConfig, err := tls.NewClient(ctx, options.Server, common.PtrValueOrDefault(options.TLS))
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if err != nil {
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return nil, err
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}
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var salamanderPassword string
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if options.Obfs != nil {
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if options.Obfs.Password == "" {
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return nil, E.New("missing obfs password")
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}
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switch options.Obfs.Type {
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case hysteria2.ObfsTypeSalamander:
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salamanderPassword = options.Obfs.Password
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default:
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return nil, E.New("unknown obfs type: ", options.Obfs.Type)
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}
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}
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outboundDialer, err := dialer.New(ctx, options.DialerOptions)
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if err != nil {
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return nil, err
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}
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networkList := options.Network.Build()
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client, err := hysteria2.NewClient(hysteria2.ClientOptions{
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Context: ctx,
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Dialer: outboundDialer,
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Logger: logger,
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BrutalDebug: options.BrutalDebug,
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ServerAddress: options.ServerOptions.Build(),
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SendBPS: uint64(options.UpMbps * hysteria.MbpsToBps),
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ReceiveBPS: uint64(options.DownMbps * hysteria.MbpsToBps),
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SalamanderPassword: salamanderPassword,
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Password: options.Password,
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TLSConfig: tlsConfig,
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UDPDisabled: !common.Contains(networkList, N.NetworkUDP),
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})
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if err != nil {
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return nil, err
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}
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return &Outbound{
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Adapter: outbound.NewAdapterWithDialerOptions(C.TypeHysteria2, tag, networkList, options.DialerOptions),
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logger: logger,
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client: client,
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}, nil
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}
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func (h *Outbound) DialContext(ctx context.Context, network string, destination M.Socksaddr) (net.Conn, error) {
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switch N.NetworkName(network) {
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case N.NetworkTCP:
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h.logger.InfoContext(ctx, "outbound connection to ", destination)
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return h.client.DialConn(ctx, destination)
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case N.NetworkUDP:
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conn, err := h.ListenPacket(ctx, destination)
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if err != nil {
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return nil, err
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}
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return bufio.NewBindPacketConn(conn, destination), nil
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default:
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return nil, E.New("unsupported network: ", network)
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}
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}
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func (h *Outbound) ListenPacket(ctx context.Context, destination M.Socksaddr) (net.PacketConn, error) {
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h.logger.InfoContext(ctx, "outbound packet connection to ", destination)
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return h.client.ListenPacket(ctx)
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}
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func (h *Outbound) InterfaceUpdated() {
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h.client.CloseWithError(E.New("network changed"))
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}
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func (h *Outbound) Close() error {
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return h.client.CloseWithError(os.ErrClosed)
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}
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