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

include/registry.go

@@ -91,6 +91,7 @@ func InboundRegistry() *inbound.Registry {
 	registerStubForRemovedInbounds(registry)
 	registerMTProxyInbound(registry)
 	registerSudokuInbound(registry)
+	registerSnellInbound(registry)
 
 	return registry
 }
@@ -135,6 +136,7 @@ func OutboundRegistry() *outbound.Registry {
 	registerQUICOutbounds(registry)
 	registerStubForRemovedOutbounds(registry)
 	registerSudokuOutbound(registry)
+	registerSnellOutbound(registry)
 
 	return registry
 }

include/snell.go

@@ -0,0 +1,17 @@
+//go:build with_snell
+
+package include
+
+import (
+	"github.com/sagernet/sing-box/adapter/inbound"
+	"github.com/sagernet/sing-box/adapter/outbound"
+	"github.com/sagernet/sing-box/protocol/snell"
+)
+
+func registerSnellInbound(registry *inbound.Registry) {
+	snell.RegisterInbound(registry)
+}
+
+func registerSnellOutbound(registry *outbound.Registry) {
+	snell.RegisterOutbound(registry)
+}

include/snell_stub.go

@@ -0,0 +1,27 @@
+//go:build !with_snell
+
+package include
+
+import (
+	"context"
+
+	"github.com/sagernet/sing-box/adapter"
+	"github.com/sagernet/sing-box/adapter/inbound"
+	"github.com/sagernet/sing-box/adapter/outbound"
+	C "github.com/sagernet/sing-box/constant"
+	"github.com/sagernet/sing-box/log"
+	"github.com/sagernet/sing-box/option"
+	E "github.com/sagernet/sing/common/exceptions"
+)
+
+func registerSnellInbound(registry *inbound.Registry) {
+	inbound.Register[option.SnellInboundOptions](registry, C.TypeSnell, func(ctx context.Context, router adapter.Router, logger log.ContextLogger, tag string, options option.SnellInboundOptions) (adapter.Inbound, error) {
+		return nil, E.New(`Snell is not included in this build, rebuild with -tags with_snell`)
+	})
+}
+
+func registerSnellOutbound(registry *outbound.Registry) {
+	outbound.Register[option.SnellOutboundOptions](registry, C.TypeSnell, func(ctx context.Context, router adapter.Router, logger log.ContextLogger, tag string, options option.SnellOutboundOptions) (adapter.Outbound, error) {
+		return nil, E.New(`Snell is not included in this build, rebuild with -tags with_snell`)
+	})
+}