sing-box/outbound/hysteria.go

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//go:build with_quic
package outbound
import (
"context"
"net"
"os"
"github.com/sagernet/sing-box/adapter"
"github.com/sagernet/sing-box/common/dialer"
"github.com/sagernet/sing-box/common/humanize"
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"github.com/sagernet/sing-box/common/tls"
C "github.com/sagernet/sing-box/constant"
"github.com/sagernet/sing-box/log"
"github.com/sagernet/sing-box/option"
"github.com/sagernet/sing-quic/hysteria"
"github.com/sagernet/sing/common"
"github.com/sagernet/sing/common/bufio"
E "github.com/sagernet/sing/common/exceptions"
M "github.com/sagernet/sing/common/metadata"
N "github.com/sagernet/sing/common/network"
)
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var (
_ adapter.Outbound = (*TUIC)(nil)
_ adapter.InterfaceUpdateListener = (*TUIC)(nil)
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)
type Hysteria struct {
myOutboundAdapter
client *hysteria.Client
}
func NewHysteria(ctx context.Context, router adapter.Router, logger log.ContextLogger, tag string, options option.HysteriaOutboundOptions) (*Hysteria, error) {
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options.UDPFragmentDefault = true
if options.TLS == nil || !options.TLS.Enabled {
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return nil, C.ErrTLSRequired
}
tlsConfig, err := tls.NewClient(ctx, options.Server, common.PtrValueOrDefault(options.TLS))
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if err != nil {
return nil, err
}
outboundDialer, err := dialer.New(router, options.DialerOptions)
if err != nil {
return nil, err
}
networkList := options.Network.Build()
var password string
if options.AuthString != "" {
password = options.AuthString
} else {
password = string(options.Auth)
}
var sendBps, receiveBps uint64
if len(options.Up) > 0 {
sendBps, err = humanize.ParseBytes(options.Up)
if err != nil {
return nil, E.Cause(err, "invalid up speed format: ", options.Up)
}
} else {
sendBps = uint64(options.UpMbps) * hysteria.MbpsToBps
}
if len(options.Down) > 0 {
receiveBps, err = humanize.ParseBytes(options.Down)
if receiveBps == 0 {
return nil, E.New("invalid down speed format: ", options.Down)
}
} else {
receiveBps = uint64(options.DownMbps) * hysteria.MbpsToBps
}
client, err := hysteria.NewClient(hysteria.ClientOptions{
Context: ctx,
Dialer: outboundDialer,
Logger: logger,
ServerAddress: options.ServerOptions.Build(),
SendBPS: sendBps,
ReceiveBPS: receiveBps,
XPlusPassword: options.Obfs,
Password: password,
TLSConfig: tlsConfig,
UDPDisabled: !common.Contains(networkList, N.NetworkUDP),
ConnReceiveWindow: options.ReceiveWindowConn,
StreamReceiveWindow: options.ReceiveWindow,
DisableMTUDiscovery: options.DisableMTUDiscovery,
})
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if err != nil {
return nil, err
}
return &Hysteria{
myOutboundAdapter: myOutboundAdapter{
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protocol: C.TypeHysteria,
network: networkList,
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router: router,
logger: logger,
tag: tag,
dependencies: withDialerDependency(options.DialerOptions),
},
client: client,
}, nil
}
func (h *Hysteria) DialContext(ctx context.Context, network string, destination M.Socksaddr) (net.Conn, error) {
switch N.NetworkName(network) {
case N.NetworkTCP:
h.logger.InfoContext(ctx, "outbound connection to ", destination)
return h.client.DialConn(ctx, destination)
case N.NetworkUDP:
conn, err := h.ListenPacket(ctx, destination)
if err != nil {
return nil, err
}
return bufio.NewBindPacketConn(conn, destination), nil
default:
return nil, E.New("unsupported network: ", network)
}
}
func (h *Hysteria) ListenPacket(ctx context.Context, destination M.Socksaddr) (net.PacketConn, error) {
h.logger.InfoContext(ctx, "outbound packet connection to ", destination)
return h.client.ListenPacket(ctx, destination)
}
func (h *Hysteria) NewConnection(ctx context.Context, conn net.Conn, metadata adapter.InboundContext) error {
return NewConnection(ctx, h, conn, metadata)
}
func (h *Hysteria) NewPacketConnection(ctx context.Context, conn N.PacketConn, metadata adapter.InboundContext) error {
return NewPacketConnection(ctx, h, conn, metadata)
}
func (h *Hysteria) InterfaceUpdated() error {
return h.client.CloseWithError(E.New("network changed"))
}
func (h *Hysteria) Close() error {
return h.client.CloseWithError(os.ErrClosed)
}