Add Snell protocol. Refactor MASQUE HTTP/2, Fair Queue. Update XHTTP, OpenVPN, Sudoku, Fallback. Fixes

This commit is contained in:
Shtorm
2026-06-26 01:25:57 +03:00
parent d174962a04
commit edf38d33d6
107 changed files with 5346 additions and 708 deletions

130
protocol/snell/inbound.go Normal file
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package snell
import (
"context"
"net"
"github.com/sagernet/sing-box/adapter"
"github.com/sagernet/sing-box/adapter/inbound"
"github.com/sagernet/sing-box/common/listener"
C "github.com/sagernet/sing-box/constant"
"github.com/sagernet/sing-box/log"
"github.com/sagernet/sing-box/option"
"github.com/sagernet/sing-box/transport/snell"
"github.com/sagernet/sing/common"
"github.com/sagernet/sing/common/bufio"
E "github.com/sagernet/sing/common/exceptions"
"github.com/sagernet/sing/common/logger"
M "github.com/sagernet/sing/common/metadata"
N "github.com/sagernet/sing/common/network"
)
func RegisterInbound(registry *inbound.Registry) {
inbound.Register[option.SnellInboundOptions](registry, C.TypeSnell, NewInbound)
}
type Inbound struct {
inbound.Adapter
router adapter.ConnectionRouterEx
logger logger.ContextLogger
listener *listener.Listener
service *snell.Service
}
func NewInbound(ctx context.Context, router adapter.Router, logger log.ContextLogger, tag string, options option.SnellInboundOptions) (adapter.Inbound, error) {
if options.PSK == "" {
return nil, E.New("snell requires psk")
}
udpEnabled := common.Contains(options.Network.Build(), N.NetworkUDP)
obfsMode := ""
if options.Obfs != nil {
obfsMode = options.Obfs.Mode
}
in := &Inbound{
Adapter: inbound.NewAdapter(C.TypeSnell, tag),
router: router,
logger: logger,
}
service, err := snell.NewService(snell.ServiceOptions{
PSK: []byte(options.PSK),
Version: options.Version,
ObfsMode: obfsMode,
UDP: udpEnabled,
Logger: logger,
Handler: (*inboundHandler)(in),
})
if err != nil {
return nil, err
}
in.service = service
in.listener = listener.New(listener.Options{
Context: ctx,
Logger: logger,
Network: []string{N.NetworkTCP},
Listen: options.ListenOptions,
ConnectionHandler: in,
})
return in, nil
}
func (h *Inbound) Start(stage adapter.StartStage) error {
if stage != adapter.StartStateStart {
return nil
}
return h.listener.Start()
}
func (h *Inbound) Close() error {
return h.listener.Close()
}
func (h *Inbound) NewConnectionEx(ctx context.Context, conn net.Conn, metadata adapter.InboundContext, onClose N.CloseHandlerFunc) {
err := h.service.NewConnection(ctx, conn, metadata.Source)
N.CloseOnHandshakeFailure(conn, onClose, err)
if err != nil {
h.logger.ErrorContext(ctx, E.Cause(err, "process connection from ", metadata.Source))
}
}
var _ adapter.TCPInjectableInbound = (*Inbound)(nil)
type inboundHandler Inbound
func (h *inboundHandler) NewConnection(ctx context.Context, conn net.Conn, source M.Socksaddr, destination M.Socksaddr, clientID string) {
var metadata adapter.InboundContext
metadata.Inbound = h.Tag()
metadata.InboundType = h.Type()
metadata.InboundDetour = h.listener.ListenOptions().Detour
metadata.Source = source
metadata.Destination = destination
if clientID != "" {
metadata.User = clientID
h.logger.InfoContext(ctx, "[", clientID, "] inbound connection to ", destination)
} else {
h.logger.InfoContext(ctx, "inbound connection to ", destination)
}
done := make(chan struct{})
h.router.RouteConnectionEx(ctx, conn, metadata, N.OnceClose(func(error) {
close(done)
}))
<-done
}
func (h *inboundHandler) NewPacketConnection(ctx context.Context, conn net.PacketConn, source M.Socksaddr, clientID string) {
var metadata adapter.InboundContext
metadata.Inbound = h.Tag()
metadata.InboundType = h.Type()
metadata.InboundDetour = h.listener.ListenOptions().Detour
metadata.Source = source
if clientID != "" {
metadata.User = clientID
h.logger.InfoContext(ctx, "[", clientID, "] inbound packet connection")
} else {
h.logger.InfoContext(ctx, "inbound packet connection")
}
done := make(chan struct{})
h.router.RoutePacketConnectionEx(ctx, bufio.NewPacketConn(conn), metadata, N.OnceClose(func(error) {
close(done)
}))
<-done
}

114
protocol/snell/outbound.go Normal file
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package snell
import (
"context"
"fmt"
"net"
"github.com/sagernet/sing-box/adapter"
"github.com/sagernet/sing-box/adapter/outbound"
"github.com/sagernet/sing-box/common/dialer"
C "github.com/sagernet/sing-box/constant"
"github.com/sagernet/sing-box/log"
"github.com/sagernet/sing-box/option"
"github.com/sagernet/sing-box/transport/snell"
"github.com/sagernet/sing/common"
"github.com/sagernet/sing/common/bufio"
E "github.com/sagernet/sing/common/exceptions"
"github.com/sagernet/sing/common/logger"
M "github.com/sagernet/sing/common/metadata"
N "github.com/sagernet/sing/common/network"
)
func RegisterOutbound(registry *outbound.Registry) {
outbound.Register[option.SnellOutboundOptions](registry, C.TypeSnell, NewOutbound)
}
type Outbound struct {
outbound.Adapter
logger logger.ContextLogger
client *snell.Client
}
func NewOutbound(ctx context.Context, router adapter.Router, logger log.ContextLogger, tag string, options option.SnellOutboundOptions) (adapter.Outbound, error) {
if options.PSK == "" {
return nil, E.New("snell requires psk")
}
version := options.Version
if version == 0 {
version = snell.DefaultSnellVersion
}
if version == snell.Version5 {
version = snell.Version4
}
udpEnabled := common.Contains(options.Network.Build(), N.NetworkUDP)
switch version {
case snell.Version1, snell.Version2:
if udpEnabled {
return nil, fmt.Errorf("snell version %d does not support UDP", version)
}
case snell.Version3, snell.Version4:
default:
return nil, fmt.Errorf("snell version error: %d", version)
}
reuse := version == snell.Version2 || (version == snell.Version4 && options.Reuse)
obfsMode := ""
obfsHost := "bing.com"
if options.Obfs != nil {
switch options.Obfs.Mode {
case "", "tls", "http":
obfsMode = options.Obfs.Mode
default:
return nil, fmt.Errorf("snell obfs mode error: %s", options.Obfs.Mode)
}
if options.Obfs.Host != "" {
obfsHost = options.Obfs.Host
}
}
outboundDialer, err := dialer.New(ctx, options.DialerOptions, options.ServerIsDomain())
if err != nil {
return nil, err
}
client := snell.NewClient(snell.ClientOptions{
Dialer: outboundDialer,
Server: options.ServerOptions.Build(),
PSK: []byte(options.PSK),
Version: version,
Reuse: reuse,
ObfsMode: obfsMode,
ObfsHost: obfsHost,
})
return &Outbound{
Adapter: outbound.NewAdapterWithDialerOptions(C.TypeSnell, tag, options.Network.Build(), options.DialerOptions),
logger: logger,
client: client,
}, nil
}
func (h *Outbound) DialContext(ctx context.Context, network string, destination M.Socksaddr) (net.Conn, error) {
ctx, metadata := adapter.ExtendContext(ctx)
metadata.Outbound = h.Tag()
metadata.Destination = destination
switch N.NetworkName(network) {
case N.NetworkTCP:
h.logger.InfoContext(ctx, "outbound connection to ", destination)
return h.client.DialContext(ctx, destination)
case N.NetworkUDP:
h.logger.InfoContext(ctx, "outbound packet connection to ", destination)
conn, err := h.client.ListenPacket(ctx, destination)
if err != nil {
return nil, err
}
return bufio.NewBindPacketConn(conn, destination), nil
default:
return nil, E.Extend(N.ErrUnknownNetwork, network)
}
}
func (h *Outbound) ListenPacket(ctx context.Context, destination M.Socksaddr) (net.PacketConn, error) {
ctx, metadata := adapter.ExtendContext(ctx)
metadata.Outbound = h.Tag()
metadata.Destination = destination
h.logger.InfoContext(ctx, "outbound packet connection to ", destination)
return h.client.ListenPacket(ctx, destination)
}