Fix udp

.github/build/friendly-filenames.json

@@ -2,6 +2,7 @@
   "android-arm64": { "friendlyName": "android-arm64-v8a" },
   "darwin-amd64": { "friendlyName": "macos-64" },
   "darwin-arm64": { "friendlyName": "macos-arm64-v8a" },
+  "dragonfly-amd64": { "friendlyName": "dragonfly-64" },
   "freebsd-386": { "friendlyName": "freebsd-32" },
   "freebsd-amd64": { "friendlyName": "freebsd-64" },
   "freebsd-arm64": { "friendlyName": "freebsd-arm64-v8a" },
@@ -21,7 +22,6 @@
   "linux-ppc64le": { "friendlyName": "linux-ppc64le" },
   "linux-ppc64": { "friendlyName": "linux-ppc64" },
   "linux-riscv64": { "friendlyName": "linux-riscv64" },
-  "linux-loong64": { "friendlyName": "linux-loong64" },
   "linux-s390x": { "friendlyName": "linux-s390x" },
   "openbsd-386": { "friendlyName": "openbsd-32" },
   "openbsd-amd64": { "friendlyName": "openbsd-64" },
@@ -31,4 +31,4 @@
   "windows-amd64": { "friendlyName": "windows-64" },
   "windows-arm64": { "friendlyName": "windows-arm64-v8a" },
   "windows-arm7": { "friendlyName": "windows-arm32-v7a" }
-}
+}

.github/docker/Dockerfile

@@ -18,5 +18,4 @@ RUN set -ex \
 
 VOLUME /etc/xray
 ENV TZ=Asia/Shanghai
-ENTRYPOINT [ "/usr/bin/xray" ]
+CMD [ "/usr/bin/xray", "-config", "/etc/xray/config.json" ]
-CMD [ "-config", "/etc/xray/config.json" ]

.github/docker/files/config.json

@@ -6,7 +6,8 @@
       "clients": [
         {
           "id": "1eb6e917-774b-4a84-aff6-b058577c60a5",
-          "level": 1
+          "level": 1,
+          "alterId": 64
         }
       ]
     }

.github/workflows/docker.yml

@@ -3,7 +3,7 @@ name: Build docker image
 on:
   push:
     branches:
-      - main
+      - '*'
 
 jobs:
   build-image:
@@ -11,10 +11,10 @@ jobs:
     permissions:
       packages: write
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v3
       - name: Docker metadata
         id: meta
-        uses: docker/metadata-action@v5
+        uses: docker/metadata-action@v4
         with:
           images: ghcr.io/${{ github.repository_owner }}/xray-core
           flavor: latest=true
@@ -23,7 +23,7 @@ jobs:
             type=ref,event=pr
             type=semver,pattern={{version}}
       - name: Login to GitHub Container Registry
-        uses: docker/login-action@v3
+        uses: docker/login-action@v2
         with:
           registry: ghcr.io
           username: ${{ github.repository_owner }}
@@ -31,15 +31,15 @@ jobs:
       - # Add support for more platforms with QEMU (optional)
         # https://github.com/docker/setup-qemu-action
         name: Set up QEMU
-        uses: docker/setup-qemu-action@v3
+        uses: docker/setup-qemu-action@v2
       - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v3
+        uses: docker/setup-buildx-action@v2
       - name: Build and push
-        uses: docker/build-push-action@v5
+        uses: docker/build-push-action@v4
         with:
           context: .
           platforms: linux/amd64,linux/arm64
           file: .github/docker/Dockerfile
           push: true
           tags: ${{ steps.meta.outputs.tags }}
-          labels: ${{ steps.meta.outputs.labels }}
+          labels: ${{ steps.meta.outputs.labels }}

.github/workflows/release.yml

@@ -70,10 +70,12 @@ jobs:
     strategy:
       matrix:
         # Include amd64 on all platforms.
-        goos: [windows, freebsd, openbsd, linux, darwin]
+        goos: [windows, freebsd, openbsd, linux, dragonfly, darwin]
         goarch: [amd64, 386]
         exclude:
-          # Exclude i386 on darwin
+          # Exclude i386 on darwin and dragonfly.
+          - goarch: 386
+            goos: dragonfly
           - goarch: 386
             goos: darwin
         include:
@@ -103,14 +105,12 @@ jobs:
             goarch: arm
             goarm: 7
           # BEGIN Other architectures
-          # BEGIN riscv64 & ARM64 & LOONG64
+          # BEGIN riscv64 & ARM64
           - goos: linux
             goarch: arm64
           - goos: linux
             goarch: riscv64
-          - goos: linux
+          # END riscv64 & ARM64
-            goarch: loong64
-          # END riscv64 & ARM64 & LOONG64
           # BEGIN MIPS
           - goos: linux
             goarch: mips64
@@ -156,7 +156,7 @@ jobs:
       CGO_ENABLED: 0
     steps:
       - name: Checkout codebase
-        uses: actions/checkout@v4
+        uses: actions/checkout@v3
 
       - name: Show workflow information 
         run: |
@@ -167,7 +167,7 @@ jobs:
       - name: Set up Go
         uses: actions/setup-go@v4
         with:
-          go-version: '1.21'
+          go-version: '1.20'
           check-latest: true
 
       - name: Get project dependencies

.github/workflows/test.yml

@@ -30,10 +30,10 @@ jobs:
       - name: Set up Go
         uses: actions/setup-go@v4
         with:
-          go-version: '1.21'
+          go-version: '1.20'
           check-latest: true
       - name: Checkout codebase
-        uses: actions/checkout@v4
+        uses: actions/checkout@v3
       - name: Restore Cache
         uses: actions/cache/restore@v3
         with:

README.md

@@ -23,7 +23,6 @@
 - Linux Script
   - [XTLS/Xray-install](https://github.com/XTLS/Xray-install)
 - Docker
-  - [iamybj/docker-xray](https://hub.docker.com/r/iamybj/docker-xray)
   - [teddysun/xray](https://hub.docker.com/r/teddysun/xray)
 - Web Panel
   - [X-UI](https://github.com/FranzKafkaYu/x-ui), [X-UI-English](https://github.com/NidukaAkalanka/x-ui-english), [3X-UI](https://github.com/MHSanaei/3x-ui), [X-UI](https://github.com/alireza0/x-ui), [X-UI](https://github.com/diditra/x-ui)
@@ -32,8 +31,8 @@
   - [Marzban](https://github.com/Gozargah/Marzban)
   - [Libertea](https://github.com/VZiChoushaDui/Libertea)
 - One Click
-  - [Xray-REALITY](https://github.com/zxcvos/Xray-script), [xray-reality](https://github.com/sajjaddg/xray-reality), [reality-ezpz](https://github.com/aleskxyz/reality-ezpz)
+  - [Xray-script](https://github.com/kirin10000/Xray-script), [Xray-REALITY](https://github.com/zxcvos/Xray-script), [LetsXray](https://github.com/tdjnodj/LetsXray)
-  - [Xray-script](https://github.com/kirin10000/Xray-script), [Xray_bash_onekey](https://github.com/hello-yunshu/Xray_bash_onekey), [XTool](https://github.com/LordPenguin666/XTool)
+  - [XTool](https://github.com/LordPenguin666/XTool), [Xray_bash_onekey](https://github.com/hello-yunshu/Xray_bash_onekey), [xray-reality](https://github.com/sajjaddg/xray-reality)
   - [v2ray-agent](https://github.com/mack-a/v2ray-agent), [Xray_onekey](https://github.com/wulabing/Xray_onekey), [ProxySU](https://github.com/proxysu/ProxySU)
 - Magisk
   - [Xray4Magisk](https://github.com/Asterisk4Magisk/Xray4Magisk)
@@ -55,7 +54,6 @@
   - [XTLS Vision](https://github.com/chika0801/Xray-install)
   - [REALITY (English)](https://cscot.pages.dev/2023/03/02/Xray-REALITY-tutorial/)
   - [XTLS-Iran-Reality (English)](https://github.com/SasukeFreestyle/XTLS-Iran-Reality)
-  - [Xray REALITY with 'steal oneself' (English)](https://computerscot.github.io/vless-xtls-utls-reality-steal-oneself.html)
 
 ## GUI Clients
 
@@ -65,40 +63,27 @@
   - [luci-app-xray](https://github.com/yichya/luci-app-xray) ([openwrt-xray](https://github.com/yichya/openwrt-xray))
 - Windows
   - [v2rayN](https://github.com/2dust/v2rayN)
-  - [NekoRay](https://github.com/Matsuridayo/nekoray)
-  - [Furious](https://github.com/LorenEteval/Furious)
-  - [HiddifyN](https://github.com/hiddify/HiddifyN)
   - [Invisible Man - Xray](https://github.com/InvisibleManVPN/InvisibleMan-XRayClient)
 - Android
   - [v2rayNG](https://github.com/2dust/v2rayNG)
-  - [HiddifyNG](https://github.com/hiddify/HiddifyNG)
   - [X-flutter](https://github.com/XTLS/X-flutter)
 - iOS & macOS arm64
   - [Mango](https://github.com/arror/Mango)
-  - [FoXray](https://apps.apple.com/app/foxray/id6448898396)
+  - [Wings X](https://apps.apple.com/app/wings-x/id6446119727)
-  - [Streisand](https://apps.apple.com/app/streisand/id6450534064)
 - macOS arm64 & x64
-  - [V2rayU](https://github.com/yanue/V2rayU)
   - [V2RayXS](https://github.com/tzmax/V2RayXS)
-  - [Furious](https://github.com/LorenEteval/Furious)
+  - [Wings X](https://apps.apple.com/app/wings-x/id6446119727)
-  - [FoXray](https://apps.apple.com/app/foxray/id6448898396)
-- Linux
-  - [v2rayA](https://github.com/v2rayA/v2rayA)
-  - [NekoRay](https://github.com/Matsuridayo/nekoray)
-  - [Furious](https://github.com/LorenEteval/Furious)
 
 ## Others that support VLESS, XTLS, REALITY, XUDP, PLUX...
 
 - iOS & macOS arm64
   - [Shadowrocket](https://apps.apple.com/app/shadowrocket/id932747118)
-- Xray Tools
+  - [Stash](https://apps.apple.com/app/stash/id1596063349)
-  - [xray-knife](https://github.com/lilendian0x00/xray-knife)
 - Xray Wrapper
-  - [XTLS/libXray](https://github.com/XTLS/libXray)
   - [xtlsapi](https://github.com/hiddify/xtlsapi)
   - [AndroidLibXrayLite](https://github.com/2dust/AndroidLibXrayLite)
   - [XrayKit](https://github.com/arror/XrayKit)
-  - [Xray-core-python](https://github.com/LorenEteval/Xray-core-python)
+  - [libxray](https://github.com/KouYiGuo/libxray)
 - [XrayR](https://github.com/XrayR-project/XrayR)
   - [XrayR-release](https://github.com/XrayR-project/XrayR-release)
   - [XrayR-V2Board](https://github.com/missuo/XrayR-V2Board)
@@ -118,8 +103,23 @@
 
 ## Credits
 
-- [Xray-core v1.0.0](https://github.com/XTLS/Xray-core/releases/tag/v1.0.0) was forked from [v2fly-core 9a03cc5](https://github.com/v2fly/v2ray-core/commit/9a03cc5c98d04cc28320fcee26dbc236b3291256), and we have made & accumulated a huge number of enhancements over time, check [the release notes for each version](https://github.com/XTLS/Xray-core/releases).
+This repo relies on the following third-party projects:
-- For third-party projects used in [Xray-core](https://github.com/XTLS/Xray-core), check your local or [the latest go.mod](https://github.com/XTLS/Xray-core/blob/main/go.mod).
+
+- Special thanks:
+  - [v2fly/v2ray-core](https://github.com/v2fly/v2ray-core)
+- In production:
+  - [ghodss/yaml](https://github.com/ghodss/yaml)
+  - [gorilla/websocket](https://github.com/gorilla/websocket)
+  - [quic-go/quic-go](https://github.com/quic-go/quic-go)
+  - [pelletier/go-toml](https://github.com/pelletier/go-toml)
+  - [pires/go-proxyproto](https://github.com/pires/go-proxyproto)
+  - [refraction-networking/utls](https://github.com/refraction-networking/utls)
+  - [seiflotfy/cuckoofilter](https://github.com/seiflotfy/cuckoofilter)
+  - [google/starlark-go](https://github.com/google/starlark-go)
+- For testing only:
+  - [miekg/dns](https://github.com/miekg/dns)
+  - [stretchr/testify](https://github.com/stretchr/testify)
+  - [h12w/socks](https://github.com/h12w/socks)
 
 ## Compilation
 

app/commander/config.pb.go

@@ -1,7 +1,7 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.31.0
+// 	protoc-gen-go v1.28.1
-// 	protoc        v4.23.1
+// 	protoc        v3.21.12
 // source: app/commander/config.proto
 
 package commander

app/dispatcher/config.pb.go

@@ -1,7 +1,7 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.31.0
+// 	protoc-gen-go v1.28.1
-// 	protoc        v4.23.1
+// 	protoc        v3.21.12
 // source: app/dispatcher/config.proto
 
 package dispatcher

app/dispatcher/default.go

@@ -4,6 +4,7 @@ package dispatcher
 
 import (
 	"context"
+	"fmt"
 	"strings"
 	"sync"
 	"time"
@@ -29,10 +30,15 @@ var errSniffingTimeout = newError("timeout on sniffing")
 
 type cachedReader struct {
 	sync.Mutex
-	reader *pipe.Reader
+	reader timeoutReader
 	cache  buf.MultiBuffer
 }
 
+type timeoutReader interface {
+	buf.Reader
+	buf.TimeoutReader
+}
+
 func (r *cachedReader) Cache(b *buf.Buffer) {
 	mb, _ := r.reader.ReadMultiBufferTimeout(time.Millisecond * 100)
 	r.Lock()
@@ -83,7 +89,7 @@ func (r *cachedReader) Interrupt() {
 		r.cache = buf.ReleaseMulti(r.cache)
 	}
 	r.Unlock()
-	r.reader.Interrupt()
+	common.Interrupt(r.reader)
 }
 
 // DefaultDispatcher is a default implementation of Dispatcher.
@@ -134,10 +140,77 @@ func (*DefaultDispatcher) Start() error {
 // Close implements common.Closable.
 func (*DefaultDispatcher) Close() error { return nil }
 
-func (d *DefaultDispatcher) getLink(ctx context.Context) (*transport.Link, *transport.Link) {
+func (d *DefaultDispatcher) getLink(ctx context.Context, network net.Network, sniffing session.SniffingRequest) (*transport.Link, *transport.Link) {
-	opt := pipe.OptionsFromContext(ctx)
+	downOpt := pipe.OptionsFromContext(ctx)
-	uplinkReader, uplinkWriter := pipe.New(opt...)
+	upOpt := downOpt
-	downlinkReader, downlinkWriter := pipe.New(opt...)
+
+	if network == net.Network_UDP {
+		var ip2domain *sync.Map // net.IP.String() => domain, this map is used by server side when client turn on fakedns
+		// Client will send domain address in the buffer.UDP.Address, server record all possible target IP addrs.
+		// When target replies, server will restore the domain and send back to client.
+		// Note: this map is not global but per connection context
+		upOpt = append(upOpt, pipe.OnTransmission(func(mb buf.MultiBuffer) buf.MultiBuffer {
+			for i, buffer := range mb {
+				if buffer.UDP == nil {
+					continue
+				}
+				addr := buffer.UDP.Address
+				if addr.Family().IsIP() {
+					if fkr0, ok := d.fdns.(dns.FakeDNSEngineRev0); ok && fkr0.IsIPInIPPool(addr) && sniffing.Enabled {
+						domain := fkr0.GetDomainFromFakeDNS(addr)
+						if len(domain) > 0 {
+							buffer.UDP.Address = net.DomainAddress(domain)
+							newError("[fakedns client] override with domain: ", domain, " for xUDP buffer at ", i).WriteToLog(session.ExportIDToError(ctx))
+						} else {
+							newError("[fakedns client] failed to find domain! :", addr.String(), " for xUDP buffer at ", i).AtWarning().WriteToLog(session.ExportIDToError(ctx))
+						}
+					}
+				} else {
+					if ip2domain == nil {
+						ip2domain = new(sync.Map)
+						newError("[fakedns client] create a new map").WriteToLog(session.ExportIDToError(ctx))
+					}
+					domain := addr.Domain()
+					ips, err := d.dns.LookupIP(domain, dns.IPOption{true, true, false})
+					if err == nil {
+						for _, ip := range ips {
+							ip2domain.Store(ip.String(), domain)
+						}
+						newError("[fakedns client] candidate ip: "+fmt.Sprintf("%v", ips), " for xUDP buffer at ", i).WriteToLog(session.ExportIDToError(ctx))
+					} else {
+						newError("[fakedns client] failed to look up IP for ", domain, " for xUDP buffer at ", i).Base(err).WriteToLog(session.ExportIDToError(ctx))
+					}
+				}
+			}
+			return mb
+		}))
+		downOpt = append(downOpt, pipe.OnTransmission(func(mb buf.MultiBuffer) buf.MultiBuffer {
+			for i, buffer := range mb {
+				if buffer.UDP == nil {
+					continue
+				}
+				addr := buffer.UDP.Address
+				if addr.Family().IsIP() {
+					if ip2domain == nil {
+						continue
+					}
+					if domain, found := ip2domain.Load(addr.IP().String()); found {
+						buffer.UDP.Address = net.DomainAddress(domain.(string))
+						newError("[fakedns client] restore domain: ", domain.(string), " for xUDP buffer at ", i).WriteToLog(session.ExportIDToError(ctx))
+					}
+				} else {
+					if fkr0, ok := d.fdns.(dns.FakeDNSEngineRev0); ok {
+						fakeIp := fkr0.GetFakeIPForDomain(addr.Domain())
+						buffer.UDP.Address = fakeIp[0]
+						newError("[fakedns client] restore FakeIP: ", buffer.UDP, fmt.Sprintf("%v", fakeIp), " for xUDP buffer at ", i).WriteToLog(session.ExportIDToError(ctx))
+					}
+				}
+			}
+			return mb
+		}))
+	}
+	uplinkReader, uplinkWriter := pipe.New(upOpt...)
+	downlinkReader, downlinkWriter := pipe.New(downOpt...)
 
 	inboundLink := &transport.Link{
 		Reader: downlinkReader,
@@ -195,7 +268,7 @@ func (d *DefaultDispatcher) shouldOverride(ctx context.Context, result SniffResu
 		protocolString = resComp.ProtocolForDomainResult()
 	}
 	for _, p := range request.OverrideDestinationForProtocol {
-		if strings.HasPrefix(protocolString, p) || strings.HasPrefix(p, protocolString) {
+		if strings.HasPrefix(protocolString, p) {
 			return true
 		}
 		if fkr0, ok := d.fdns.(dns.FakeDNSEngineRev0); ok && protocolString != "bittorrent" && p == "fakedns" &&
@@ -218,20 +291,18 @@ func (d *DefaultDispatcher) Dispatch(ctx context.Context, destination net.Destin
 	if !destination.IsValid() {
 		panic("Dispatcher: Invalid destination.")
 	}
-	ob := session.OutboundFromContext(ctx)
+	ob := &session.Outbound{
-	if ob == nil {
+		Target: destination,
-		ob = &session.Outbound{}
-		ctx = session.ContextWithOutbound(ctx, ob)
 	}
-	ob.OriginalTarget = destination
+	ctx = session.ContextWithOutbound(ctx, ob)
-	ob.Target = destination
 	content := session.ContentFromContext(ctx)
 	if content == nil {
 		content = new(session.Content)
 		ctx = session.ContextWithContent(ctx, content)
 	}
+
 	sniffingRequest := content.SniffingRequest
-	inbound, outbound := d.getLink(ctx)
+	inbound, outbound := d.getLink(ctx, destination.Network, sniffingRequest)
 	if !sniffingRequest.Enabled {
 		go d.routedDispatch(ctx, outbound, destination)
 	} else {
@@ -248,15 +319,7 @@ func (d *DefaultDispatcher) Dispatch(ctx context.Context, destination net.Destin
 				domain := result.Domain()
 				newError("sniffed domain: ", domain).WriteToLog(session.ExportIDToError(ctx))
 				destination.Address = net.ParseAddress(domain)
-				protocol := result.Protocol()
+				if sniffingRequest.RouteOnly && result.Protocol() != "fakedns" {
-				if resComp, ok := result.(SnifferResultComposite); ok {
-					protocol = resComp.ProtocolForDomainResult()
-				}
-				isFakeIP := false
-				if fkr0, ok := d.fdns.(dns.FakeDNSEngineRev0); ok && ob.Target.Address.Family().IsIP() && fkr0.IsIPInIPPool(ob.Target.Address) {
-					isFakeIP = true
-				}
-				if sniffingRequest.RouteOnly && protocol != "fakedns" && protocol != "fakedns+others" && !isFakeIP {
 					ob.RouteTarget = destination
 				} else {
 					ob.Target = destination
@@ -273,13 +336,10 @@ func (d *DefaultDispatcher) DispatchLink(ctx context.Context, destination net.De
 	if !destination.IsValid() {
 		return newError("Dispatcher: Invalid destination.")
 	}
-	ob := session.OutboundFromContext(ctx)
+	ob := &session.Outbound{
-	if ob == nil {
+		Target: destination,
-		ob = &session.Outbound{}
-		ctx = session.ContextWithOutbound(ctx, ob)
 	}
-	ob.OriginalTarget = destination
+	ctx = session.ContextWithOutbound(ctx, ob)
-	ob.Target = destination
 	content := session.ContentFromContext(ctx)
 	if content == nil {
 		content = new(session.Content)
@@ -290,7 +350,7 @@ func (d *DefaultDispatcher) DispatchLink(ctx context.Context, destination net.De
 		d.routedDispatch(ctx, outbound, destination)
 	} else {
 		cReader := &cachedReader{
-			reader: outbound.Reader.(*pipe.Reader),
+			reader: outbound.Reader.(timeoutReader),
 		}
 		outbound.Reader = cReader
 		result, err := sniffer(ctx, cReader, sniffingRequest.MetadataOnly, destination.Network)
@@ -301,15 +361,7 @@ func (d *DefaultDispatcher) DispatchLink(ctx context.Context, destination net.De
 			domain := result.Domain()
 			newError("sniffed domain: ", domain).WriteToLog(session.ExportIDToError(ctx))
 			destination.Address = net.ParseAddress(domain)
-			protocol := result.Protocol()
+			if sniffingRequest.RouteOnly && result.Protocol() != "fakedns" {
-			if resComp, ok := result.(SnifferResultComposite); ok {
-				protocol = resComp.ProtocolForDomainResult()
-			}
-			isFakeIP := false
-			if fkr0, ok := d.fdns.(dns.FakeDNSEngineRev0); ok && ob.Target.Address.Family().IsIP() && fkr0.IsIPInIPPool(ob.Target.Address) {
-				isFakeIP = true
-			}
-			if sniffingRequest.RouteOnly && protocol != "fakedns" && protocol != "fakedns+others" && !isFakeIP {
 				ob.RouteTarget = destination
 			} else {
 				ob.Target = destination

app/dns/config.pb.go

@@ -1,7 +1,7 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.31.0
+// 	protoc-gen-go v1.28.1
-// 	protoc        v4.23.1
+// 	protoc        v3.21.12
 // source: app/dns/config.proto
 
 package dns
@@ -134,7 +134,6 @@ type NameServer struct {
 	PrioritizedDomain []*NameServer_PriorityDomain `protobuf:"bytes,2,rep,name=prioritized_domain,json=prioritizedDomain,proto3" json:"prioritized_domain,omitempty"`
 	Geoip             []*router.GeoIP              `protobuf:"bytes,3,rep,name=geoip,proto3" json:"geoip,omitempty"`
 	OriginalRules     []*NameServer_OriginalRule   `protobuf:"bytes,4,rep,name=original_rules,json=originalRules,proto3" json:"original_rules,omitempty"`
-	QueryStrategy     QueryStrategy                `protobuf:"varint,7,opt,name=query_strategy,json=queryStrategy,proto3,enum=xray.app.dns.QueryStrategy" json:"query_strategy,omitempty"`
 }
 
 func (x *NameServer) Reset() {
@@ -211,13 +210,6 @@ func (x *NameServer) GetOriginalRules() []*NameServer_OriginalRule {
 	return nil
 }
 
-func (x *NameServer) GetQueryStrategy() QueryStrategy {
-	if x != nil {
-		return x.QueryStrategy
-	}
-	return QueryStrategy_USE_IP
-}
-
 type Config struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -227,14 +219,14 @@ type Config struct {
 	// the moment. A special value 'localhost' as a domain address can be set to
 	// use DNS on local system.
 	//
-	// Deprecated: Marked as deprecated in app/dns/config.proto.
+	// Deprecated: Do not use.
 	NameServers []*net.Endpoint `protobuf:"bytes,1,rep,name=NameServers,proto3" json:"NameServers,omitempty"`
 	// NameServer list used by this DNS client.
 	NameServer []*NameServer `protobuf:"bytes,5,rep,name=name_server,json=nameServer,proto3" json:"name_server,omitempty"`
 	// Static hosts. Domain to IP.
 	// Deprecated. Use static_hosts.
 	//
-	// Deprecated: Marked as deprecated in app/dns/config.proto.
+	// Deprecated: Do not use.
 	Hosts map[string]*net.IPOrDomain `protobuf:"bytes,2,rep,name=Hosts,proto3" json:"Hosts,omitempty" protobuf_key:"bytes,1,opt,name=key,proto3" protobuf_val:"bytes,2,opt,name=value,proto3"`
 	// Client IP for EDNS client subnet. Must be 4 bytes (IPv4) or 16 bytes
 	// (IPv6).
@@ -281,7 +273,7 @@ func (*Config) Descriptor() ([]byte, []int) {
 	return file_app_dns_config_proto_rawDescGZIP(), []int{1}
 }
 
-// Deprecated: Marked as deprecated in app/dns/config.proto.
+// Deprecated: Do not use.
 func (x *Config) GetNameServers() []*net.Endpoint {
 	if x != nil {
 		return x.NameServers
@@ -296,7 +288,7 @@ func (x *Config) GetNameServer() []*NameServer {
 	return nil
 }
 
-// Deprecated: Marked as deprecated in app/dns/config.proto.
+// Deprecated: Do not use.
 func (x *Config) GetHosts() map[string]*net.IPOrDomain {
 	if x != nil {
 		return x.Hosts
@@ -546,7 +538,7 @@ var file_app_dns_config_proto_rawDesc = []byte{
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@@ -567,81 +559,77 @@ var file_app_dns_config_proto_rawDesc = []byte{
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+	0x02, 0x0c, 0x58, 0x72, 0x61, 0x79, 0x2e, 0x41, 0x70, 0x70, 0x2e, 0x44, 0x6e, 0x73, 0x62, 0x06,
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+	0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
-	0x5a, 0x21, 0x67, 0x69, 0x74, 0x68, 0x75, 0x62, 0x2e, 0x63, 0x6f, 0x6d, 0x2f, 0x78, 0x74, 0x6c,
-	0x73, 0x2f, 0x78, 0x72, 0x61, 0x79, 0x2d, 0x63, 0x6f, 0x72, 0x65, 0x2f, 0x61, 0x70, 0x70, 0x2f,
-	0x64, 0x6e, 0x73, 0xaa, 0x02, 0x0c, 0x58, 0x72, 0x61, 0x79, 0x2e, 0x41, 0x70, 0x70, 0x2e, 0x44,
-	0x6e, 0x73, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
 }
 
 var (
@@ -676,20 +664,19 @@ var file_app_dns_config_proto_depIdxs = []int32{
 	4,  // 1: xray.app.dns.NameServer.prioritized_domain:type_name -> xray.app.dns.NameServer.PriorityDomain
 	9,  // 2: xray.app.dns.NameServer.geoip:type_name -> xray.app.router.GeoIP
 	5,  // 3: xray.app.dns.NameServer.original_rules:type_name -> xray.app.dns.NameServer.OriginalRule
-	1,  // 4: xray.app.dns.NameServer.query_strategy:type_name -> xray.app.dns.QueryStrategy
+	8,  // 4: xray.app.dns.Config.NameServers:type_name -> xray.common.net.Endpoint
-	8,  // 5: xray.app.dns.Config.NameServers:type_name -> xray.common.net.Endpoint
+	2,  // 5: xray.app.dns.Config.name_server:type_name -> xray.app.dns.NameServer
-	2,  // 6: xray.app.dns.Config.name_server:type_name -> xray.app.dns.NameServer
+	6,  // 6: xray.app.dns.Config.Hosts:type_name -> xray.app.dns.Config.HostsEntry
-	6,  // 7: xray.app.dns.Config.Hosts:type_name -> xray.app.dns.Config.HostsEntry
+	7,  // 7: xray.app.dns.Config.static_hosts:type_name -> xray.app.dns.Config.HostMapping
-	7,  // 8: xray.app.dns.Config.static_hosts:type_name -> xray.app.dns.Config.HostMapping
+	1,  // 8: xray.app.dns.Config.query_strategy:type_name -> xray.app.dns.QueryStrategy
-	1,  // 9: xray.app.dns.Config.query_strategy:type_name -> xray.app.dns.QueryStrategy
+	0,  // 9: xray.app.dns.NameServer.PriorityDomain.type:type_name -> xray.app.dns.DomainMatchingType
-	0,  // 10: xray.app.dns.NameServer.PriorityDomain.type:type_name -> xray.app.dns.DomainMatchingType
+	10, // 10: xray.app.dns.Config.HostsEntry.value:type_name -> xray.common.net.IPOrDomain
-	10, // 11: xray.app.dns.Config.HostsEntry.value:type_name -> xray.common.net.IPOrDomain
+	0,  // 11: xray.app.dns.Config.HostMapping.type:type_name -> xray.app.dns.DomainMatchingType
-	0,  // 12: xray.app.dns.Config.HostMapping.type:type_name -> xray.app.dns.DomainMatchingType
+	12, // [12:12] is the sub-list for method output_type
-	13, // [13:13] is the sub-list for method output_type
+	12, // [12:12] is the sub-list for method input_type
-	13, // [13:13] is the sub-list for method input_type
+	12, // [12:12] is the sub-list for extension type_name
-	13, // [13:13] is the sub-list for extension type_name
+	12, // [12:12] is the sub-list for extension extendee
-	13, // [13:13] is the sub-list for extension extendee
+	0,  // [0:12] is the sub-list for field type_name
-	0,  // [0:13] is the sub-list for field type_name
 }
 
 func init() { file_app_dns_config_proto_init() }

app/dns/config.proto

@@ -28,7 +28,6 @@ message NameServer {
   repeated PriorityDomain prioritized_domain = 2;
   repeated xray.app.router.GeoIP geoip = 3;
   repeated OriginalRule original_rules = 4;
-  QueryStrategy query_strategy = 7;
 }
 
 enum DomainMatchingType {

app/dns/dns.go

@@ -215,7 +215,7 @@ func (s *DNS) LookupIP(domain string, option dns.IPOption) ([]net.IP, error) {
 			newError("failed to lookup ip for domain ", domain, " at server ", client.Name()).Base(err).WriteToLog()
 			errs = append(errs, err)
 		}
-		if err != context.Canceled && err != context.DeadlineExceeded && err != errExpectedIPNonMatch && err != dns.ErrEmptyResponse {
+		if err != context.Canceled && err != context.DeadlineExceeded && err != errExpectedIPNonMatch {
 			return nil, err
 		}
 	}

app/dns/dns_test.go

@@ -13,7 +13,6 @@ import (
 	_ "github.com/xtls/xray-core/app/proxyman/outbound"
 	"github.com/xtls/xray-core/app/router"
 	"github.com/xtls/xray-core/common"
-	"github.com/xtls/xray-core/common/errors"
 	"github.com/xtls/xray-core/common/net"
 	"github.com/xtls/xray-core/common/serial"
 	"github.com/xtls/xray-core/core"
@@ -261,7 +260,7 @@ func TestUDPServer(t *testing.T) {
 			IPv6Enable: true,
 			FakeEnable: false,
 		})
-		if !errors.AllEqual(feature_dns.ErrEmptyResponse, errors.Cause(err)) {
+		if err != feature_dns.ErrEmptyResponse {
 			t.Fatal("error: ", err)
 		}
 		if len(ips) != 0 {

app/dns/fakedns/fakedns.pb.go

@@ -1,7 +1,7 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.31.0
+// 	protoc-gen-go v1.28.1
-// 	protoc        v4.23.1
+// 	protoc        v3.21.12
 // source: app/dns/fakedns/fakedns.proto
 
 package fakedns

app/dns/nameserver.go

@@ -35,7 +35,7 @@ type Client struct {
 var errExpectedIPNonMatch = errors.New("expectIPs not match")
 
 // NewServer creates a name server object according to the network destination url.
-func NewServer(dest net.Destination, dispatcher routing.Dispatcher, queryStrategy QueryStrategy) (Server, error) {
+func NewServer(dest net.Destination, dispatcher routing.Dispatcher) (Server, error) {
 	if address := dest.Address; address.Family().IsDomain() {
 		u, err := url.Parse(address.Domain())
 		if err != nil {
@@ -45,15 +45,15 @@ func NewServer(dest net.Destination, dispatcher routing.Dispatcher, queryStrateg
 		case strings.EqualFold(u.String(), "localhost"):
 			return NewLocalNameServer(), nil
 		case strings.EqualFold(u.Scheme, "https"): // DOH Remote mode
-			return NewDoHNameServer(u, dispatcher, queryStrategy)
+			return NewDoHNameServer(u, dispatcher)
 		case strings.EqualFold(u.Scheme, "https+local"): // DOH Local mode
-			return NewDoHLocalNameServer(u, queryStrategy), nil
+			return NewDoHLocalNameServer(u), nil
 		case strings.EqualFold(u.Scheme, "quic+local"): // DNS-over-QUIC Local mode
-			return NewQUICNameServer(u, queryStrategy)
+			return NewQUICNameServer(u)
 		case strings.EqualFold(u.Scheme, "tcp"): // DNS-over-TCP Remote mode
-			return NewTCPNameServer(u, dispatcher, queryStrategy)
+			return NewTCPNameServer(u, dispatcher)
 		case strings.EqualFold(u.Scheme, "tcp+local"): // DNS-over-TCP Local mode
-			return NewTCPLocalNameServer(u, queryStrategy)
+			return NewTCPLocalNameServer(u)
 		case strings.EqualFold(u.String(), "fakedns"):
 			return NewFakeDNSServer(), nil
 		}
@@ -68,19 +68,12 @@ func NewServer(dest net.Destination, dispatcher routing.Dispatcher, queryStrateg
 }
 
 // NewClient creates a DNS client managing a name server with client IP, domain rules and expected IPs.
-func NewClient(
+func NewClient(ctx context.Context, ns *NameServer, clientIP net.IP, container router.GeoIPMatcherContainer, matcherInfos *[]*DomainMatcherInfo, updateDomainRule func(strmatcher.Matcher, int, []*DomainMatcherInfo) error) (*Client, error) {
-	ctx context.Context,
-	ns *NameServer,
-	clientIP net.IP,
-	container router.GeoIPMatcherContainer,
-	matcherInfos *[]*DomainMatcherInfo,
-	updateDomainRule func(strmatcher.Matcher, int, []*DomainMatcherInfo) error,
-) (*Client, error) {
 	client := &Client{}
 
 	err := core.RequireFeatures(ctx, func(dispatcher routing.Dispatcher) error {
 		// Create a new server for each client for now
-		server, err := NewServer(ns.Address.AsDestination(), dispatcher, ns.GetQueryStrategy())
+		server, err := NewServer(ns.Address.AsDestination(), dispatcher)
 		if err != nil {
 			return newError("failed to create nameserver").Base(err).AtWarning()
 		}
@@ -167,7 +160,7 @@ func NewClient(
 func NewSimpleClient(ctx context.Context, endpoint *net.Endpoint, clientIP net.IP) (*Client, error) {
 	client := &Client{}
 	err := core.RequireFeatures(ctx, func(dispatcher routing.Dispatcher) error {
-		server, err := NewServer(endpoint.AsDestination(), dispatcher, QueryStrategy_USE_IP)
+		server, err := NewServer(endpoint.AsDestination(), dispatcher)
 		if err != nil {
 			return newError("failed to create nameserver").Base(err).AtWarning()
 		}
@@ -225,24 +218,3 @@ func (c *Client) MatchExpectedIPs(domain string, ips []net.IP) ([]net.IP, error)
 	newError("domain ", domain, " expectIPs ", newIps, " matched at server ", c.Name()).AtDebug().WriteToLog()
 	return newIps, nil
 }
-
-func ResolveIpOptionOverride(queryStrategy QueryStrategy, ipOption dns.IPOption) dns.IPOption {
-	switch queryStrategy {
-	case QueryStrategy_USE_IP:
-		return ipOption
-	case QueryStrategy_USE_IP4:
-		return dns.IPOption{
-			IPv4Enable: ipOption.IPv4Enable,
-			IPv6Enable: false,
-			FakeEnable: false,
-		}
-	case QueryStrategy_USE_IP6:
-		return dns.IPOption{
-			IPv4Enable: false,
-			IPv6Enable: ipOption.IPv6Enable,
-			FakeEnable: false,
-		}
-	default:
-		return ipOption
-	}
-}

app/dns/nameserver_doh.go

@@ -31,20 +31,19 @@ import (
 type DoHNameServer struct {
 	dispatcher routing.Dispatcher
 	sync.RWMutex
-	ips           map[string]*record
+	ips        map[string]*record
-	pub           *pubsub.Service
+	pub        *pubsub.Service
-	cleanup       *task.Periodic
+	cleanup    *task.Periodic
-	reqID         uint32
+	reqID      uint32
-	httpClient    *http.Client
+	httpClient *http.Client
-	dohURL        string
+	dohURL     string
-	name          string
+	name       string
-	queryStrategy QueryStrategy
 }
 
 // NewDoHNameServer creates DOH server object for remote resolving.
-func NewDoHNameServer(url *url.URL, dispatcher routing.Dispatcher, queryStrategy QueryStrategy) (*DoHNameServer, error) {
+func NewDoHNameServer(url *url.URL, dispatcher routing.Dispatcher) (*DoHNameServer, error) {
 	newError("DNS: created Remote DOH client for ", url.String()).AtInfo().WriteToLog()
-	s := baseDOHNameServer(url, "DOH", queryStrategy)
+	s := baseDOHNameServer(url, "DOH")
 
 	s.dispatcher = dispatcher
 	tr := &http.Transport{
@@ -91,9 +90,9 @@ func NewDoHNameServer(url *url.URL, dispatcher routing.Dispatcher, queryStrategy
 }
 
 // NewDoHLocalNameServer creates DOH client object for local resolving
-func NewDoHLocalNameServer(url *url.URL, queryStrategy QueryStrategy) *DoHNameServer {
+func NewDoHLocalNameServer(url *url.URL) *DoHNameServer {
 	url.Scheme = "https"
-	s := baseDOHNameServer(url, "DOHL", queryStrategy)
+	s := baseDOHNameServer(url, "DOHL")
 	tr := &http.Transport{
 		IdleConnTimeout:   90 * time.Second,
 		ForceAttemptHTTP2: true,
@@ -123,13 +122,12 @@ func NewDoHLocalNameServer(url *url.URL, queryStrategy QueryStrategy) *DoHNameSe
 	return s
 }
 
-func baseDOHNameServer(url *url.URL, prefix string, queryStrategy QueryStrategy) *DoHNameServer {
+func baseDOHNameServer(url *url.URL, prefix string) *DoHNameServer {
 	s := &DoHNameServer{
-		ips:           make(map[string]*record),
+		ips:    make(map[string]*record),
-		pub:           pubsub.NewService(),
+		pub:    pubsub.NewService(),
-		name:          prefix + "//" + url.Host,
+		name:   prefix + "//" + url.Host,
-		dohURL:        url.String(),
+		dohURL: url.String(),
-		queryStrategy: queryStrategy,
 	}
 	s.cleanup = &task.Periodic{
 		Interval: time.Minute,
@@ -355,10 +353,6 @@ func (s *DoHNameServer) findIPsForDomain(domain string, option dns_feature.IPOpt
 // QueryIP implements Server.
 func (s *DoHNameServer) QueryIP(ctx context.Context, domain string, clientIP net.IP, option dns_feature.IPOption, disableCache bool) ([]net.IP, error) { // nolint: dupl
 	fqdn := Fqdn(domain)
-	option = ResolveIpOptionOverride(s.queryStrategy, option)
-	if !option.IPv4Enable && !option.IPv6Enable {
-		return nil, dns_feature.ErrEmptyResponse
-	}
 
 	if disableCache {
 		newError("DNS cache is disabled. Querying IP for ", domain, " at ", s.name).AtDebug().WriteToLog()

app/dns/nameserver_doh_test.go

@@ -17,7 +17,7 @@ func TestDOHNameServer(t *testing.T) {
 	url, err := url.Parse("https+local://1.1.1.1/dns-query")
 	common.Must(err)
 
-	s := NewDoHLocalNameServer(url, QueryStrategy_USE_IP)
+	s := NewDoHLocalNameServer(url)
 	ctx, cancel := context.WithTimeout(context.Background(), time.Second*5)
 	ips, err := s.QueryIP(ctx, "google.com", net.IP(nil), dns_feature.IPOption{
 		IPv4Enable: true,
@@ -34,7 +34,7 @@ func TestDOHNameServerWithCache(t *testing.T) {
 	url, err := url.Parse("https+local://1.1.1.1/dns-query")
 	common.Must(err)
 
-	s := NewDoHLocalNameServer(url, QueryStrategy_USE_IP)
+	s := NewDoHLocalNameServer(url)
 	ctx, cancel := context.WithTimeout(context.Background(), time.Second*5)
 	ips, err := s.QueryIP(ctx, "google.com", net.IP(nil), dns_feature.IPOption{
 		IPv4Enable: true,
@@ -57,49 +57,3 @@ func TestDOHNameServerWithCache(t *testing.T) {
 		t.Fatal(r)
 	}
 }
-
-func TestDOHNameServerWithIPv4Override(t *testing.T) {
-	url, err := url.Parse("https+local://1.1.1.1/dns-query")
-	common.Must(err)
-
-	s := NewDoHLocalNameServer(url, QueryStrategy_USE_IP4)
-	ctx, cancel := context.WithTimeout(context.Background(), time.Second*5)
-	ips, err := s.QueryIP(ctx, "google.com", net.IP(nil), dns_feature.IPOption{
-		IPv4Enable: true,
-		IPv6Enable: true,
-	}, false)
-	cancel()
-	common.Must(err)
-	if len(ips) == 0 {
-		t.Error("expect some ips, but got 0")
-	}
-
-	for _, ip := range ips {
-		if len(ip) != net.IPv4len {
-			t.Error("expect only IPv4 response from DNS query")
-		}
-	}
-}
-
-func TestDOHNameServerWithIPv6Override(t *testing.T) {
-	url, err := url.Parse("https+local://1.1.1.1/dns-query")
-	common.Must(err)
-
-	s := NewDoHLocalNameServer(url, QueryStrategy_USE_IP6)
-	ctx, cancel := context.WithTimeout(context.Background(), time.Second*5)
-	ips, err := s.QueryIP(ctx, "google.com", net.IP(nil), dns_feature.IPOption{
-		IPv4Enable: true,
-		IPv6Enable: true,
-	}, false)
-	cancel()
-	common.Must(err)
-	if len(ips) == 0 {
-		t.Error("expect some ips, but got 0")
-	}
-
-	for _, ip := range ips {
-		if len(ip) != net.IPv6len {
-			t.Error("expect only IPv6 response from DNS query")
-		}
-	}
-}

app/dns/nameserver_quic.go

@@ -31,18 +31,17 @@ const handshakeTimeout = time.Second * 8
 // QUICNameServer implemented DNS over QUIC
 type QUICNameServer struct {
 	sync.RWMutex
-	ips           map[string]*record
+	ips         map[string]*record
-	pub           *pubsub.Service
+	pub         *pubsub.Service
-	cleanup       *task.Periodic
+	cleanup     *task.Periodic
-	reqID         uint32
+	reqID       uint32
-	name          string
+	name        string
-	destination   *net.Destination
+	destination *net.Destination
-	connection    quic.Connection
+	connection  quic.Connection
-	queryStrategy QueryStrategy
 }
 
 // NewQUICNameServer creates DNS-over-QUIC client object for local resolving
-func NewQUICNameServer(url *url.URL, queryStrategy QueryStrategy) (*QUICNameServer, error) {
+func NewQUICNameServer(url *url.URL) (*QUICNameServer, error) {
 	newError("DNS: created Local DNS-over-QUIC client for ", url.String()).AtInfo().WriteToLog()
 
 	var err error
@@ -56,11 +55,10 @@ func NewQUICNameServer(url *url.URL, queryStrategy QueryStrategy) (*QUICNameServ
 	dest := net.UDPDestination(net.ParseAddress(url.Hostname()), port)
 
 	s := &QUICNameServer{
-		ips:           make(map[string]*record),
+		ips:         make(map[string]*record),
-		pub:           pubsub.NewService(),
+		pub:         pubsub.NewService(),
-		name:          url.String(),
+		name:        url.String(),
-		destination:   &dest,
+		destination: &dest,
-		queryStrategy: queryStrategy,
 	}
 	s.cleanup = &task.Periodic{
 		Interval: time.Minute,
@@ -271,10 +269,6 @@ func (s *QUICNameServer) findIPsForDomain(domain string, option dns_feature.IPOp
 // QueryIP is called from dns.Server->queryIPTimeout
 func (s *QUICNameServer) QueryIP(ctx context.Context, domain string, clientIP net.IP, option dns_feature.IPOption, disableCache bool) ([]net.IP, error) {
 	fqdn := Fqdn(domain)
-	option = ResolveIpOptionOverride(s.queryStrategy, option)
-	if !option.IPv4Enable && !option.IPv6Enable {
-		return nil, dns_feature.ErrEmptyResponse
-	}
 
 	if disableCache {
 		newError("DNS cache is disabled. Querying IP for ", domain, " at ", s.name).AtDebug().WriteToLog()
@@ -379,8 +373,8 @@ func (s *QUICNameServer) openConnection() (quic.Connection, error) {
 	quicConfig := &quic.Config{
 		HandshakeIdleTimeout: handshakeTimeout,
 	}
-	tlsConfig.ServerName = s.destination.Address.String()
+
-	conn, err := quic.DialAddr(context.Background(), s.destination.NetAddr(), tlsConfig.GetTLSConfig(tls.WithNextProto("http/1.1", http2.NextProtoTLS, NextProtoDQ)), quicConfig)
+	conn, err := quic.DialAddrContext(context.Background(), s.destination.NetAddr(), tlsConfig.GetTLSConfig(tls.WithNextProto("http/1.1", http2.NextProtoTLS, NextProtoDQ)), quicConfig)
 	log.Record(&log.AccessMessage{
 		From:   "DNS",
 		To:     s.destination,

app/dns/nameserver_quic_test.go

@@ -16,7 +16,7 @@ import (
 func TestQUICNameServer(t *testing.T) {
 	url, err := url.Parse("quic://dns.adguard.com")
 	common.Must(err)
-	s, err := NewQUICNameServer(url, QueryStrategy_USE_IP)
+	s, err := NewQUICNameServer(url)
 	common.Must(err)
 	ctx, cancel := context.WithTimeout(context.Background(), time.Second*2)
 	ips, err := s.QueryIP(ctx, "google.com", net.IP(nil), dns.IPOption{
@@ -40,49 +40,3 @@ func TestQUICNameServer(t *testing.T) {
 		t.Fatal(r)
 	}
 }
-
-func TestQUICNameServerWithIPv4Override(t *testing.T) {
-	url, err := url.Parse("quic://dns.adguard.com")
-	common.Must(err)
-	s, err := NewQUICNameServer(url, QueryStrategy_USE_IP4)
-	common.Must(err)
-	ctx, cancel := context.WithTimeout(context.Background(), time.Second*2)
-	ips, err := s.QueryIP(ctx, "google.com", net.IP(nil), dns.IPOption{
-		IPv4Enable: true,
-		IPv6Enable: true,
-	}, false)
-	cancel()
-	common.Must(err)
-	if len(ips) == 0 {
-		t.Error("expect some ips, but got 0")
-	}
-
-	for _, ip := range ips {
-		if len(ip) != net.IPv4len {
-			t.Error("expect only IPv4 response from DNS query")
-		}
-	}
-}
-
-func TestQUICNameServerWithIPv6Override(t *testing.T) {
-	url, err := url.Parse("quic://dns.adguard.com")
-	common.Must(err)
-	s, err := NewQUICNameServer(url, QueryStrategy_USE_IP6)
-	common.Must(err)
-	ctx, cancel := context.WithTimeout(context.Background(), time.Second*2)
-	ips, err := s.QueryIP(ctx, "google.com", net.IP(nil), dns.IPOption{
-		IPv4Enable: true,
-		IPv6Enable: true,
-	}, false)
-	cancel()
-	common.Must(err)
-	if len(ips) == 0 {
-		t.Error("expect some ips, but got 0")
-	}
-
-	for _, ip := range ips {
-		if len(ip) != net.IPv6len {
-			t.Error("expect only IPv6 response from DNS query")
-		}
-	}
-}

app/dns/nameserver_tcp.go

@@ -27,23 +27,18 @@ import (
 // TCPNameServer implemented DNS over TCP (RFC7766).
 type TCPNameServer struct {
 	sync.RWMutex
-	name          string
+	name        string
-	destination   *net.Destination
+	destination *net.Destination
-	ips           map[string]*record
+	ips         map[string]*record
-	pub           *pubsub.Service
+	pub         *pubsub.Service
-	cleanup       *task.Periodic
+	cleanup     *task.Periodic
-	reqID         uint32
+	reqID       uint32
-	dial          func(context.Context) (net.Conn, error)
+	dial        func(context.Context) (net.Conn, error)
-	queryStrategy QueryStrategy
 }
 
 // NewTCPNameServer creates DNS over TCP server object for remote resolving.
-func NewTCPNameServer(
+func NewTCPNameServer(url *url.URL, dispatcher routing.Dispatcher) (*TCPNameServer, error) {
-	url *url.URL,
+	s, err := baseTCPNameServer(url, "TCP")
-	dispatcher routing.Dispatcher,
-	queryStrategy QueryStrategy,
-) (*TCPNameServer, error) {
-	s, err := baseTCPNameServer(url, "TCP", queryStrategy)
 	if err != nil {
 		return nil, err
 	}
@@ -64,8 +59,8 @@ func NewTCPNameServer(
 }
 
 // NewTCPLocalNameServer creates DNS over TCP client object for local resolving
-func NewTCPLocalNameServer(url *url.URL, queryStrategy QueryStrategy) (*TCPNameServer, error) {
+func NewTCPLocalNameServer(url *url.URL) (*TCPNameServer, error) {
-	s, err := baseTCPNameServer(url, "TCPL", queryStrategy)
+	s, err := baseTCPNameServer(url, "TCPL")
 	if err != nil {
 		return nil, err
 	}
@@ -77,22 +72,22 @@ func NewTCPLocalNameServer(url *url.URL, queryStrategy QueryStrategy) (*TCPNameS
 	return s, nil
 }
 
-func baseTCPNameServer(url *url.URL, prefix string, queryStrategy QueryStrategy) (*TCPNameServer, error) {
+func baseTCPNameServer(url *url.URL, prefix string) (*TCPNameServer, error) {
+	var err error
 	port := net.Port(53)
 	if url.Port() != "" {
-		var err error
+		port, err = net.PortFromString(url.Port())
-		if port, err = net.PortFromString(url.Port()); err != nil {
+		if err != nil {
 			return nil, err
 		}
 	}
 	dest := net.TCPDestination(net.ParseAddress(url.Hostname()), port)
 
 	s := &TCPNameServer{
-		destination:   &dest,
+		destination: &dest,
-		ips:           make(map[string]*record),
+		ips:         make(map[string]*record),
-		pub:           pubsub.NewService(),
+		pub:         pubsub.NewService(),
-		name:          prefix + "//" + dest.NetAddr(),
+		name:        prefix + "//" + dest.NetAddr(),
-		queryStrategy: queryStrategy,
 	}
 	s.cleanup = &task.Periodic{
 		Interval: time.Minute,
@@ -313,10 +308,6 @@ func (s *TCPNameServer) findIPsForDomain(domain string, option dns_feature.IPOpt
 // QueryIP implements Server.
 func (s *TCPNameServer) QueryIP(ctx context.Context, domain string, clientIP net.IP, option dns_feature.IPOption, disableCache bool) ([]net.IP, error) {
 	fqdn := Fqdn(domain)
-	option = ResolveIpOptionOverride(s.queryStrategy, option)
-	if !option.IPv4Enable && !option.IPv6Enable {
-		return nil, dns_feature.ErrEmptyResponse
-	}
 
 	if disableCache {
 		newError("DNS cache is disabled. Querying IP for ", domain, " at ", s.name).AtDebug().WriteToLog()

app/dns/nameserver_tcp_test.go

@@ -16,7 +16,7 @@ import (
 func TestTCPLocalNameServer(t *testing.T) {
 	url, err := url.Parse("tcp+local://8.8.8.8")
 	common.Must(err)
-	s, err := NewTCPLocalNameServer(url, QueryStrategy_USE_IP)
+	s, err := NewTCPLocalNameServer(url)
 	common.Must(err)
 	ctx, cancel := context.WithTimeout(context.Background(), time.Second*5)
 	ips, err := s.QueryIP(ctx, "google.com", net.IP(nil), dns_feature.IPOption{
@@ -33,7 +33,7 @@ func TestTCPLocalNameServer(t *testing.T) {
 func TestTCPLocalNameServerWithCache(t *testing.T) {
 	url, err := url.Parse("tcp+local://8.8.8.8")
 	common.Must(err)
-	s, err := NewTCPLocalNameServer(url, QueryStrategy_USE_IP)
+	s, err := NewTCPLocalNameServer(url)
 	common.Must(err)
 	ctx, cancel := context.WithTimeout(context.Background(), time.Second*5)
 	ips, err := s.QueryIP(ctx, "google.com", net.IP(nil), dns_feature.IPOption{
@@ -57,51 +57,3 @@ func TestTCPLocalNameServerWithCache(t *testing.T) {
 		t.Fatal(r)
 	}
 }
-
-func TestTCPLocalNameServerWithIPv4Override(t *testing.T) {
-	url, err := url.Parse("tcp+local://8.8.8.8")
-	common.Must(err)
-	s, err := NewTCPLocalNameServer(url, QueryStrategy_USE_IP4)
-	common.Must(err)
-	ctx, cancel := context.WithTimeout(context.Background(), time.Second*5)
-	ips, err := s.QueryIP(ctx, "google.com", net.IP(nil), dns_feature.IPOption{
-		IPv4Enable: true,
-		IPv6Enable: true,
-	}, false)
-	cancel()
-	common.Must(err)
-
-	if len(ips) == 0 {
-		t.Error("expect some ips, but got 0")
-	}
-
-	for _, ip := range ips {
-		if len(ip) != net.IPv4len {
-			t.Error("expect only IPv4 response from DNS query")
-		}
-	}
-}
-
-func TestTCPLocalNameServerWithIPv6Override(t *testing.T) {
-	url, err := url.Parse("tcp+local://8.8.8.8")
-	common.Must(err)
-	s, err := NewTCPLocalNameServer(url, QueryStrategy_USE_IP6)
-	common.Must(err)
-	ctx, cancel := context.WithTimeout(context.Background(), time.Second*5)
-	ips, err := s.QueryIP(ctx, "google.com", net.IP(nil), dns_feature.IPOption{
-		IPv4Enable: true,
-		IPv6Enable: true,
-	}, false)
-	cancel()
-	common.Must(err)
-
-	if len(ips) == 0 {
-		t.Error("expect some ips, but got 0")
-	}
-
-	for _, ip := range ips {
-		if len(ip) != net.IPv6len {
-			t.Error("expect only IPv6 response from DNS query")
-		}
-	}
-}

app/log/command/config.pb.go

@@ -1,7 +1,7 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.31.0
+// 	protoc-gen-go v1.28.1
-// 	protoc        v4.23.1
+// 	protoc        v3.21.12
 // source: app/log/command/config.proto
 
 package command

app/log/command/config_grpc.pb.go

@@ -1,7 +1,7 @@
 // Code generated by protoc-gen-go-grpc. DO NOT EDIT.
 // versions:
-// - protoc-gen-go-grpc v1.3.0
+// - protoc-gen-go-grpc v1.2.0
-// - protoc             v4.23.1
+// - protoc             v3.21.12
 // source: app/log/command/config.proto
 
 package command
@@ -18,10 +18,6 @@ import (
 // Requires gRPC-Go v1.32.0 or later.
 const _ = grpc.SupportPackageIsVersion7
 
-const (
-	LoggerService_RestartLogger_FullMethodName = "/xray.app.log.command.LoggerService/RestartLogger"
-)
-
 // LoggerServiceClient is the client API for LoggerService service.
 //
 // For semantics around ctx use and closing/ending streaming RPCs, please refer to https://pkg.go.dev/google.golang.org/grpc/?tab=doc#ClientConn.NewStream.
@@ -39,7 +35,7 @@ func NewLoggerServiceClient(cc grpc.ClientConnInterface) LoggerServiceClient {
 
 func (c *loggerServiceClient) RestartLogger(ctx context.Context, in *RestartLoggerRequest, opts ...grpc.CallOption) (*RestartLoggerResponse, error) {
 	out := new(RestartLoggerResponse)
-	err := c.cc.Invoke(ctx, LoggerService_RestartLogger_FullMethodName, in, out, opts...)
+	err := c.cc.Invoke(ctx, "/xray.app.log.command.LoggerService/RestartLogger", in, out, opts...)
 	if err != nil {
 		return nil, err
 	}
@@ -84,7 +80,7 @@ func _LoggerService_RestartLogger_Handler(srv interface{}, ctx context.Context,
 	}
 	info := &grpc.UnaryServerInfo{
 		Server:     srv,
-		FullMethod: LoggerService_RestartLogger_FullMethodName,
+		FullMethod: "/xray.app.log.command.LoggerService/RestartLogger",
 	}
 	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
 		return srv.(LoggerServiceServer).RestartLogger(ctx, req.(*RestartLoggerRequest))

app/log/config.pb.go

@@ -1,7 +1,7 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.31.0
+// 	protoc-gen-go v1.28.1
-// 	protoc        v4.23.1
+// 	protoc        v3.21.12
 // source: app/log/config.proto
 
 package log

app/metrics/config.pb.go

@@ -1,7 +1,7 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.31.0
+// 	protoc-gen-go v1.28.1
-// 	protoc        v4.23.1
+// 	protoc        v3.21.12
 // source: app/metrics/config.proto
 
 package metrics

app/observatory/command/command.pb.go

@@ -1,7 +1,7 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.31.0
+// 	protoc-gen-go v1.28.1
-// 	protoc        v4.23.1
+// 	protoc        v3.21.12
 // source: app/observatory/command/command.proto
 
 package command

app/observatory/command/command_grpc.pb.go

@@ -1,7 +1,7 @@
 // Code generated by protoc-gen-go-grpc. DO NOT EDIT.
 // versions:
-// - protoc-gen-go-grpc v1.3.0
+// - protoc-gen-go-grpc v1.2.0
-// - protoc             v4.23.1
+// - protoc             v3.21.12
 // source: app/observatory/command/command.proto
 
 package command
@@ -18,10 +18,6 @@ import (
 // Requires gRPC-Go v1.32.0 or later.
 const _ = grpc.SupportPackageIsVersion7
 
-const (
-	ObservatoryService_GetOutboundStatus_FullMethodName = "/xray.core.app.observatory.command.ObservatoryService/GetOutboundStatus"
-)
-
 // ObservatoryServiceClient is the client API for ObservatoryService service.
 //
 // For semantics around ctx use and closing/ending streaming RPCs, please refer to https://pkg.go.dev/google.golang.org/grpc/?tab=doc#ClientConn.NewStream.
@@ -39,7 +35,7 @@ func NewObservatoryServiceClient(cc grpc.ClientConnInterface) ObservatoryService
 
 func (c *observatoryServiceClient) GetOutboundStatus(ctx context.Context, in *GetOutboundStatusRequest, opts ...grpc.CallOption) (*GetOutboundStatusResponse, error) {
 	out := new(GetOutboundStatusResponse)
-	err := c.cc.Invoke(ctx, ObservatoryService_GetOutboundStatus_FullMethodName, in, out, opts...)
+	err := c.cc.Invoke(ctx, "/xray.core.app.observatory.command.ObservatoryService/GetOutboundStatus", in, out, opts...)
 	if err != nil {
 		return nil, err
 	}
@@ -84,7 +80,7 @@ func _ObservatoryService_GetOutboundStatus_Handler(srv interface{}, ctx context.
 	}
 	info := &grpc.UnaryServerInfo{
 		Server:     srv,
-		FullMethod: ObservatoryService_GetOutboundStatus_FullMethodName,
+		FullMethod: "/xray.core.app.observatory.command.ObservatoryService/GetOutboundStatus",
 	}
 	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
 		return srv.(ObservatoryServiceServer).GetOutboundStatus(ctx, req.(*GetOutboundStatusRequest))

app/observatory/config.pb.go

@@ -1,7 +1,7 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.31.0
+// 	protoc-gen-go v1.28.1
-// 	protoc        v4.23.1
+// 	protoc        v3.21.12
 // source: app/observatory/config.proto
 
 package observatory

app/observatory/observer.go

@@ -9,6 +9,7 @@ import (
 	"sync"
 	"time"
 
+	"github.com/golang/protobuf/proto"
 	"github.com/xtls/xray-core/common"
 	v2net "github.com/xtls/xray-core/common/net"
 	"github.com/xtls/xray-core/common/session"
@@ -18,7 +19,6 @@ import (
 	"github.com/xtls/xray-core/features/extension"
 	"github.com/xtls/xray-core/features/outbound"
 	"github.com/xtls/xray-core/transport/internet/tagged"
-	"google.golang.org/protobuf/proto"
 )
 
 type Observer struct {

app/policy/config.pb.go

@@ -1,7 +1,7 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.31.0
+// 	protoc-gen-go v1.28.1
-// 	protoc        v4.23.1
+// 	protoc        v3.21.12
 // source: app/policy/config.proto
 
 package policy

app/proxyman/command/command.pb.go

@@ -1,7 +1,7 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.31.0
+// 	protoc-gen-go v1.28.1
-// 	protoc        v4.23.1
+// 	protoc        v3.21.12
 // source: app/proxyman/command/command.proto
 
 package command

app/proxyman/command/command_grpc.pb.go

@@ -1,7 +1,7 @@
 // Code generated by protoc-gen-go-grpc. DO NOT EDIT.
 // versions:
-// - protoc-gen-go-grpc v1.3.0
+// - protoc-gen-go-grpc v1.2.0
-// - protoc             v4.23.1
+// - protoc             v3.21.12
 // source: app/proxyman/command/command.proto
 
 package command
@@ -18,15 +18,6 @@ import (
 // Requires gRPC-Go v1.32.0 or later.
 const _ = grpc.SupportPackageIsVersion7
 
-const (
-	HandlerService_AddInbound_FullMethodName     = "/xray.app.proxyman.command.HandlerService/AddInbound"
-	HandlerService_RemoveInbound_FullMethodName  = "/xray.app.proxyman.command.HandlerService/RemoveInbound"
-	HandlerService_AlterInbound_FullMethodName   = "/xray.app.proxyman.command.HandlerService/AlterInbound"
-	HandlerService_AddOutbound_FullMethodName    = "/xray.app.proxyman.command.HandlerService/AddOutbound"
-	HandlerService_RemoveOutbound_FullMethodName = "/xray.app.proxyman.command.HandlerService/RemoveOutbound"
-	HandlerService_AlterOutbound_FullMethodName  = "/xray.app.proxyman.command.HandlerService/AlterOutbound"
-)
-
 // HandlerServiceClient is the client API for HandlerService service.
 //
 // For semantics around ctx use and closing/ending streaming RPCs, please refer to https://pkg.go.dev/google.golang.org/grpc/?tab=doc#ClientConn.NewStream.
@@ -49,7 +40,7 @@ func NewHandlerServiceClient(cc grpc.ClientConnInterface) HandlerServiceClient {
 
 func (c *handlerServiceClient) AddInbound(ctx context.Context, in *AddInboundRequest, opts ...grpc.CallOption) (*AddInboundResponse, error) {
 	out := new(AddInboundResponse)
-	err := c.cc.Invoke(ctx, HandlerService_AddInbound_FullMethodName, in, out, opts...)
+	err := c.cc.Invoke(ctx, "/xray.app.proxyman.command.HandlerService/AddInbound", in, out, opts...)
 	if err != nil {
 		return nil, err
 	}
@@ -58,7 +49,7 @@ func (c *handlerServiceClient) AddInbound(ctx context.Context, in *AddInboundReq
 
 func (c *handlerServiceClient) RemoveInbound(ctx context.Context, in *RemoveInboundRequest, opts ...grpc.CallOption) (*RemoveInboundResponse, error) {
 	out := new(RemoveInboundResponse)
-	err := c.cc.Invoke(ctx, HandlerService_RemoveInbound_FullMethodName, in, out, opts...)
+	err := c.cc.Invoke(ctx, "/xray.app.proxyman.command.HandlerService/RemoveInbound", in, out, opts...)
 	if err != nil {
 		return nil, err
 	}
@@ -67,7 +58,7 @@ func (c *handlerServiceClient) RemoveInbound(ctx context.Context, in *RemoveInbo
 
 func (c *handlerServiceClient) AlterInbound(ctx context.Context, in *AlterInboundRequest, opts ...grpc.CallOption) (*AlterInboundResponse, error) {
 	out := new(AlterInboundResponse)
-	err := c.cc.Invoke(ctx, HandlerService_AlterInbound_FullMethodName, in, out, opts...)
+	err := c.cc.Invoke(ctx, "/xray.app.proxyman.command.HandlerService/AlterInbound", in, out, opts...)
 	if err != nil {
 		return nil, err
 	}
@@ -76,7 +67,7 @@ func (c *handlerServiceClient) AlterInbound(ctx context.Context, in *AlterInboun
 
 func (c *handlerServiceClient) AddOutbound(ctx context.Context, in *AddOutboundRequest, opts ...grpc.CallOption) (*AddOutboundResponse, error) {
 	out := new(AddOutboundResponse)
-	err := c.cc.Invoke(ctx, HandlerService_AddOutbound_FullMethodName, in, out, opts...)
+	err := c.cc.Invoke(ctx, "/xray.app.proxyman.command.HandlerService/AddOutbound", in, out, opts...)
 	if err != nil {
 		return nil, err
 	}
@@ -85,7 +76,7 @@ func (c *handlerServiceClient) AddOutbound(ctx context.Context, in *AddOutboundR
 
 func (c *handlerServiceClient) RemoveOutbound(ctx context.Context, in *RemoveOutboundRequest, opts ...grpc.CallOption) (*RemoveOutboundResponse, error) {
 	out := new(RemoveOutboundResponse)
-	err := c.cc.Invoke(ctx, HandlerService_RemoveOutbound_FullMethodName, in, out, opts...)
+	err := c.cc.Invoke(ctx, "/xray.app.proxyman.command.HandlerService/RemoveOutbound", in, out, opts...)
 	if err != nil {
 		return nil, err
 	}
@@ -94,7 +85,7 @@ func (c *handlerServiceClient) RemoveOutbound(ctx context.Context, in *RemoveOut
 
 func (c *handlerServiceClient) AlterOutbound(ctx context.Context, in *AlterOutboundRequest, opts ...grpc.CallOption) (*AlterOutboundResponse, error) {
 	out := new(AlterOutboundResponse)
-	err := c.cc.Invoke(ctx, HandlerService_AlterOutbound_FullMethodName, in, out, opts...)
+	err := c.cc.Invoke(ctx, "/xray.app.proxyman.command.HandlerService/AlterOutbound", in, out, opts...)
 	if err != nil {
 		return nil, err
 	}
@@ -159,7 +150,7 @@ func _HandlerService_AddInbound_Handler(srv interface{}, ctx context.Context, de
 	}
 	info := &grpc.UnaryServerInfo{
 		Server:     srv,
-		FullMethod: HandlerService_AddInbound_FullMethodName,
+		FullMethod: "/xray.app.proxyman.command.HandlerService/AddInbound",
 	}
 	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
 		return srv.(HandlerServiceServer).AddInbound(ctx, req.(*AddInboundRequest))
@@ -177,7 +168,7 @@ func _HandlerService_RemoveInbound_Handler(srv interface{}, ctx context.Context,
 	}
 	info := &grpc.UnaryServerInfo{
 		Server:     srv,
-		FullMethod: HandlerService_RemoveInbound_FullMethodName,
+		FullMethod: "/xray.app.proxyman.command.HandlerService/RemoveInbound",
 	}
 	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
 		return srv.(HandlerServiceServer).RemoveInbound(ctx, req.(*RemoveInboundRequest))
@@ -195,7 +186,7 @@ func _HandlerService_AlterInbound_Handler(srv interface{}, ctx context.Context,
 	}
 	info := &grpc.UnaryServerInfo{
 		Server:     srv,
-		FullMethod: HandlerService_AlterInbound_FullMethodName,
+		FullMethod: "/xray.app.proxyman.command.HandlerService/AlterInbound",
 	}
 	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
 		return srv.(HandlerServiceServer).AlterInbound(ctx, req.(*AlterInboundRequest))
@@ -213,7 +204,7 @@ func _HandlerService_AddOutbound_Handler(srv interface{}, ctx context.Context, d
 	}
 	info := &grpc.UnaryServerInfo{
 		Server:     srv,
-		FullMethod: HandlerService_AddOutbound_FullMethodName,
+		FullMethod: "/xray.app.proxyman.command.HandlerService/AddOutbound",
 	}
 	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
 		return srv.(HandlerServiceServer).AddOutbound(ctx, req.(*AddOutboundRequest))
@@ -231,7 +222,7 @@ func _HandlerService_RemoveOutbound_Handler(srv interface{}, ctx context.Context
 	}
 	info := &grpc.UnaryServerInfo{
 		Server:     srv,
-		FullMethod: HandlerService_RemoveOutbound_FullMethodName,
+		FullMethod: "/xray.app.proxyman.command.HandlerService/RemoveOutbound",
 	}
 	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
 		return srv.(HandlerServiceServer).RemoveOutbound(ctx, req.(*RemoveOutboundRequest))
@@ -249,7 +240,7 @@ func _HandlerService_AlterOutbound_Handler(srv interface{}, ctx context.Context,
 	}
 	info := &grpc.UnaryServerInfo{
 		Server:     srv,
-		FullMethod: HandlerService_AlterOutbound_FullMethodName,
+		FullMethod: "/xray.app.proxyman.command.HandlerService/AlterOutbound",
 	}
 	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
 		return srv.(HandlerServiceServer).AlterOutbound(ctx, req.(*AlterOutboundRequest))

app/proxyman/config.pb.go

@@ -1,7 +1,7 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.31.0
+// 	protoc-gen-go v1.28.1
-// 	protoc        v4.23.1
+// 	protoc        v3.21.12
 // source: app/proxyman/config.proto
 
 package proxyman
@@ -326,7 +326,7 @@ type ReceiverConfig struct {
 	// Override domains for the given protocol.
 	// Deprecated. Use sniffing_settings.
 	//
-	// Deprecated: Marked as deprecated in app/proxyman/config.proto.
+	// Deprecated: Do not use.
 	DomainOverride   []KnownProtocols `protobuf:"varint,7,rep,packed,name=domain_override,json=domainOverride,proto3,enum=xray.app.proxyman.KnownProtocols" json:"domain_override,omitempty"`
 	SniffingSettings *SniffingConfig  `protobuf:"bytes,8,opt,name=sniffing_settings,json=sniffingSettings,proto3" json:"sniffing_settings,omitempty"`
 }
@@ -398,7 +398,7 @@ func (x *ReceiverConfig) GetReceiveOriginalDestination() bool {
 	return false
 }
 
-// Deprecated: Marked as deprecated in app/proxyman/config.proto.
+// Deprecated: Do not use.
 func (x *ReceiverConfig) GetDomainOverride() []KnownProtocols {
 	if x != nil {
 		return x.DomainOverride
@@ -524,6 +524,7 @@ type SenderConfig struct {
 	StreamSettings    *internet.StreamConfig `protobuf:"bytes,2,opt,name=stream_settings,json=streamSettings,proto3" json:"stream_settings,omitempty"`
 	ProxySettings     *internet.ProxyConfig  `protobuf:"bytes,3,opt,name=proxy_settings,json=proxySettings,proto3" json:"proxy_settings,omitempty"`
 	MultiplexSettings *MultiplexingConfig    `protobuf:"bytes,4,opt,name=multiplex_settings,json=multiplexSettings,proto3" json:"multiplex_settings,omitempty"`
+	SmuxSettings      *SingMultiplexConfig   `protobuf:"bytes,5,opt,name=smux_settings,json=smuxSettings,proto3" json:"smux_settings,omitempty"`
 }
 
 func (x *SenderConfig) Reset() {
@@ -586,6 +587,13 @@ func (x *SenderConfig) GetMultiplexSettings() *MultiplexingConfig {
 	return nil
 }
 
+func (x *SenderConfig) GetSmuxSettings() *SingMultiplexConfig {
+	if x != nil {
+		return x.SmuxSettings
+	}
+	return nil
+}
+
 type MultiplexingConfig struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -661,6 +669,93 @@ func (x *MultiplexingConfig) GetXudpProxyUDP443() string {
 	return ""
 }
 
+type SingMultiplexConfig struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Enabled        bool   `protobuf:"varint,1,opt,name=enabled,proto3" json:"enabled,omitempty"`
+	Protocol       string `protobuf:"bytes,2,opt,name=protocol,proto3" json:"protocol,omitempty"`
+	MaxConnections int32  `protobuf:"varint,3,opt,name=max_connections,json=maxConnections,proto3" json:"max_connections,omitempty"`
+	MinStreams     int32  `protobuf:"varint,4,opt,name=min_streams,json=minStreams,proto3" json:"min_streams,omitempty"`
+	MaxStreams     int32  `protobuf:"varint,5,opt,name=max_streams,json=maxStreams,proto3" json:"max_streams,omitempty"`
+	Padding        bool   `protobuf:"varint,6,opt,name=padding,proto3" json:"padding,omitempty"`
+}
+
+func (x *SingMultiplexConfig) Reset() {
+	*x = SingMultiplexConfig{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_app_proxyman_config_proto_msgTypes[8]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *SingMultiplexConfig) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*SingMultiplexConfig) ProtoMessage() {}
+
+func (x *SingMultiplexConfig) ProtoReflect() protoreflect.Message {
+	mi := &file_app_proxyman_config_proto_msgTypes[8]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use SingMultiplexConfig.ProtoReflect.Descriptor instead.
+func (*SingMultiplexConfig) Descriptor() ([]byte, []int) {
+	return file_app_proxyman_config_proto_rawDescGZIP(), []int{8}
+}
+
+func (x *SingMultiplexConfig) GetEnabled() bool {
+	if x != nil {
+		return x.Enabled
+	}
+	return false
+}
+
+func (x *SingMultiplexConfig) GetProtocol() string {
+	if x != nil {
+		return x.Protocol
+	}
+	return ""
+}
+
+func (x *SingMultiplexConfig) GetMaxConnections() int32 {
+	if x != nil {
+		return x.MaxConnections
+	}
+	return 0
+}
+
+func (x *SingMultiplexConfig) GetMinStreams() int32 {
+	if x != nil {
+		return x.MinStreams
+	}
+	return 0
+}
+
+func (x *SingMultiplexConfig) GetMaxStreams() int32 {
+	if x != nil {
+		return x.MaxStreams
+	}
+	return 0
+}
+
+func (x *SingMultiplexConfig) GetPadding() bool {
+	if x != nil {
+		return x.Padding
+	}
+	return false
+}
+
 type AllocationStrategy_AllocationStrategyConcurrency struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -672,7 +767,7 @@ type AllocationStrategy_AllocationStrategyConcurrency struct {
 func (x *AllocationStrategy_AllocationStrategyConcurrency) Reset() {
 	*x = AllocationStrategy_AllocationStrategyConcurrency{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_app_proxyman_config_proto_msgTypes[8]
+		mi := &file_app_proxyman_config_proto_msgTypes[9]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -685,7 +780,7 @@ func (x *AllocationStrategy_AllocationStrategyConcurrency) String() string {
 func (*AllocationStrategy_AllocationStrategyConcurrency) ProtoMessage() {}
 
 func (x *AllocationStrategy_AllocationStrategyConcurrency) ProtoReflect() protoreflect.Message {
-	mi := &file_app_proxyman_config_proto_msgTypes[8]
+	mi := &file_app_proxyman_config_proto_msgTypes[9]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -719,7 +814,7 @@ type AllocationStrategy_AllocationStrategyRefresh struct {
 func (x *AllocationStrategy_AllocationStrategyRefresh) Reset() {
 	*x = AllocationStrategy_AllocationStrategyRefresh{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_app_proxyman_config_proto_msgTypes[9]
+		mi := &file_app_proxyman_config_proto_msgTypes[10]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -732,7 +827,7 @@ func (x *AllocationStrategy_AllocationStrategyRefresh) String() string {
 func (*AllocationStrategy_AllocationStrategyRefresh) ProtoMessage() {}
 
 func (x *AllocationStrategy_AllocationStrategyRefresh) ProtoReflect() protoreflect.Message {
-	mi := &file_app_proxyman_config_proto_msgTypes[9]
+	mi := &file_app_proxyman_config_proto_msgTypes[10]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -855,7 +950,7 @@ var file_app_proxyman_config_proto_rawDesc = []byte{
 	0x6d, 0x6d, 0x6f, 0x6e, 0x2e, 0x73, 0x65, 0x72, 0x69, 0x61, 0x6c, 0x2e, 0x54, 0x79, 0x70, 0x65,
 	0x64, 0x4d, 0x65, 0x73, 0x73, 0x61, 0x67, 0x65, 0x52, 0x0d, 0x70, 0x72, 0x6f, 0x78, 0x79, 0x53,
 	0x65, 0x74, 0x74, 0x69, 0x6e, 0x67, 0x73, 0x22, 0x10, 0x0a, 0x0e, 0x4f, 0x75, 0x74, 0x62, 0x6f,
-	0x75, 0x6e, 0x64, 0x43, 0x6f, 0x6e, 0x66, 0x69, 0x67, 0x22, 0xb0, 0x02, 0x0a, 0x0c, 0x53, 0x65,
+	0x75, 0x6e, 0x64, 0x43, 0x6f, 0x6e, 0x66, 0x69, 0x67, 0x22, 0xfd, 0x02, 0x0a, 0x0c, 0x53, 0x65,
 	0x6e, 0x64, 0x65, 0x72, 0x43, 0x6f, 0x6e, 0x66, 0x69, 0x67, 0x12, 0x2d, 0x0a, 0x03, 0x76, 0x69,
 	0x61, 0x18, 0x01, 0x20, 0x01, 0x28, 0x0b, 0x32, 0x1b, 0x2e, 0x78, 0x72, 0x61, 0x79, 0x2e, 0x63,
 	0x6f, 0x6d, 0x6d, 0x6f, 0x6e, 0x2e, 0x6e, 0x65, 0x74, 0x2e, 0x49, 0x50, 0x4f, 0x72, 0x44, 0x6f,
@@ -874,18 +969,36 @@ var file_app_proxyman_config_proto_rawDesc = []byte{
 	0x28, 0x0b, 0x32, 0x25, 0x2e, 0x78, 0x72, 0x61, 0x79, 0x2e, 0x61, 0x70, 0x70, 0x2e, 0x70, 0x72,
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+	0x73, 0x18, 0x03, 0x20, 0x01, 0x28, 0x05, 0x52, 0x0e, 0x6d, 0x61, 0x78, 0x43, 0x6f, 0x6e, 0x6e,
+	0x65, 0x63, 0x74, 0x69, 0x6f, 0x6e, 0x73, 0x12, 0x1f, 0x0a, 0x0b, 0x6d, 0x69, 0x6e, 0x5f, 0x73,
+	0x74, 0x72, 0x65, 0x61, 0x6d, 0x73, 0x18, 0x04, 0x20, 0x01, 0x28, 0x05, 0x52, 0x0a, 0x6d, 0x69,
+	0x6e, 0x53, 0x74, 0x72, 0x65, 0x61, 0x6d, 0x73, 0x12, 0x1f, 0x0a, 0x0b, 0x6d, 0x61, 0x78, 0x5f,
+	0x73, 0x74, 0x72, 0x65, 0x61, 0x6d, 0x73, 0x18, 0x05, 0x20, 0x01, 0x28, 0x05, 0x52, 0x0a, 0x6d,
+	0x61, 0x78, 0x53, 0x74, 0x72, 0x65, 0x61, 0x6d, 0x73, 0x12, 0x18, 0x0a, 0x07, 0x70, 0x61, 0x64,
+	0x64, 0x69, 0x6e, 0x67, 0x18, 0x06, 0x20, 0x01, 0x28, 0x08, 0x52, 0x07, 0x70, 0x61, 0x64, 0x64,
+	0x69, 0x6e, 0x67, 0x2a, 0x23, 0x0a, 0x0e, 0x4b, 0x6e, 0x6f, 0x77, 0x6e, 0x50, 0x72, 0x6f, 0x74,
 	0x6f, 0x63, 0x6f, 0x6c, 0x73, 0x12, 0x08, 0x0a, 0x04, 0x48, 0x54, 0x54, 0x50, 0x10, 0x00, 0x12,
 	0x07, 0x0a, 0x03, 0x54, 0x4c, 0x53, 0x10, 0x01, 0x42, 0x55, 0x0a, 0x15, 0x63, 0x6f, 0x6d, 0x2e,
 	0x78, 0x72, 0x61, 0x79, 0x2e, 0x61, 0x70, 0x70, 0x2e, 0x70, 0x72, 0x6f, 0x78, 0x79, 0x6d, 0x61,
@@ -909,7 +1022,7 @@ func file_app_proxyman_config_proto_rawDescGZIP() []byte {
 }
 
 var file_app_proxyman_config_proto_enumTypes = make([]protoimpl.EnumInfo, 2)
-var file_app_proxyman_config_proto_msgTypes = make([]protoimpl.MessageInfo, 10)
+var file_app_proxyman_config_proto_msgTypes = make([]protoimpl.MessageInfo, 11)
 var file_app_proxyman_config_proto_goTypes = []interface{}{
 	(KnownProtocols)(0),                                      // 0: xray.app.proxyman.KnownProtocols
 	(AllocationStrategy_Type)(0),                             // 1: xray.app.proxyman.AllocationStrategy.Type
@@ -921,35 +1034,37 @@ var file_app_proxyman_config_proto_goTypes = []interface{}{
 	(*OutboundConfig)(nil),                                   // 7: xray.app.proxyman.OutboundConfig
 	(*SenderConfig)(nil),                                     // 8: xray.app.proxyman.SenderConfig
 	(*MultiplexingConfig)(nil),                               // 9: xray.app.proxyman.MultiplexingConfig
-	(*AllocationStrategy_AllocationStrategyConcurrency)(nil), // 10: xray.app.proxyman.AllocationStrategy.AllocationStrategyConcurrency
+	(*SingMultiplexConfig)(nil),                              // 10: xray.app.proxyman.SingMultiplexConfig
-	(*AllocationStrategy_AllocationStrategyRefresh)(nil),     // 11: xray.app.proxyman.AllocationStrategy.AllocationStrategyRefresh
+	(*AllocationStrategy_AllocationStrategyConcurrency)(nil), // 11: xray.app.proxyman.AllocationStrategy.AllocationStrategyConcurrency
-	(*net.PortList)(nil),                                     // 12: xray.common.net.PortList
+	(*AllocationStrategy_AllocationStrategyRefresh)(nil),     // 12: xray.app.proxyman.AllocationStrategy.AllocationStrategyRefresh
-	(*net.IPOrDomain)(nil),                                   // 13: xray.common.net.IPOrDomain
+	(*net.PortList)(nil),                                     // 13: xray.common.net.PortList
-	(*internet.StreamConfig)(nil),                            // 14: xray.transport.internet.StreamConfig
+	(*net.IPOrDomain)(nil),                                   // 14: xray.common.net.IPOrDomain
-	(*serial.TypedMessage)(nil),                              // 15: xray.common.serial.TypedMessage
+	(*internet.StreamConfig)(nil),                            // 15: xray.transport.internet.StreamConfig
-	(*internet.ProxyConfig)(nil),                             // 16: xray.transport.internet.ProxyConfig
+	(*serial.TypedMessage)(nil),                              // 16: xray.common.serial.TypedMessage
+	(*internet.ProxyConfig)(nil),                             // 17: xray.transport.internet.ProxyConfig
 }
 var file_app_proxyman_config_proto_depIdxs = []int32{
 	1,  // 0: xray.app.proxyman.AllocationStrategy.type:type_name -> xray.app.proxyman.AllocationStrategy.Type
-	10, // 1: xray.app.proxyman.AllocationStrategy.concurrency:type_name -> xray.app.proxyman.AllocationStrategy.AllocationStrategyConcurrency
+	11, // 1: xray.app.proxyman.AllocationStrategy.concurrency:type_name -> xray.app.proxyman.AllocationStrategy.AllocationStrategyConcurrency
-	11, // 2: xray.app.proxyman.AllocationStrategy.refresh:type_name -> xray.app.proxyman.AllocationStrategy.AllocationStrategyRefresh
+	12, // 2: xray.app.proxyman.AllocationStrategy.refresh:type_name -> xray.app.proxyman.AllocationStrategy.AllocationStrategyRefresh
-	12, // 3: xray.app.proxyman.ReceiverConfig.port_list:type_name -> xray.common.net.PortList
+	13, // 3: xray.app.proxyman.ReceiverConfig.port_list:type_name -> xray.common.net.PortList
-	13, // 4: xray.app.proxyman.ReceiverConfig.listen:type_name -> xray.common.net.IPOrDomain
+	14, // 4: xray.app.proxyman.ReceiverConfig.listen:type_name -> xray.common.net.IPOrDomain
 	3,  // 5: xray.app.proxyman.ReceiverConfig.allocation_strategy:type_name -> xray.app.proxyman.AllocationStrategy
-	14, // 6: xray.app.proxyman.ReceiverConfig.stream_settings:type_name -> xray.transport.internet.StreamConfig
+	15, // 6: xray.app.proxyman.ReceiverConfig.stream_settings:type_name -> xray.transport.internet.StreamConfig
 	0,  // 7: xray.app.proxyman.ReceiverConfig.domain_override:type_name -> xray.app.proxyman.KnownProtocols
 	4,  // 8: xray.app.proxyman.ReceiverConfig.sniffing_settings:type_name -> xray.app.proxyman.SniffingConfig
-	15, // 9: xray.app.proxyman.InboundHandlerConfig.receiver_settings:type_name -> xray.common.serial.TypedMessage
+	16, // 9: xray.app.proxyman.InboundHandlerConfig.receiver_settings:type_name -> xray.common.serial.TypedMessage
-	15, // 10: xray.app.proxyman.InboundHandlerConfig.proxy_settings:type_name -> xray.common.serial.TypedMessage
+	16, // 10: xray.app.proxyman.InboundHandlerConfig.proxy_settings:type_name -> xray.common.serial.TypedMessage
-	13, // 11: xray.app.proxyman.SenderConfig.via:type_name -> xray.common.net.IPOrDomain
+	14, // 11: xray.app.proxyman.SenderConfig.via:type_name -> xray.common.net.IPOrDomain
-	14, // 12: xray.app.proxyman.SenderConfig.stream_settings:type_name -> xray.transport.internet.StreamConfig
+	15, // 12: xray.app.proxyman.SenderConfig.stream_settings:type_name -> xray.transport.internet.StreamConfig
-	16, // 13: xray.app.proxyman.SenderConfig.proxy_settings:type_name -> xray.transport.internet.ProxyConfig
+	17, // 13: xray.app.proxyman.SenderConfig.proxy_settings:type_name -> xray.transport.internet.ProxyConfig
 	9,  // 14: xray.app.proxyman.SenderConfig.multiplex_settings:type_name -> xray.app.proxyman.MultiplexingConfig
-	15, // [15:15] is the sub-list for method output_type
+	10, // 15: xray.app.proxyman.SenderConfig.smux_settings:type_name -> xray.app.proxyman.SingMultiplexConfig
-	15, // [15:15] is the sub-list for method input_type
+	16, // [16:16] is the sub-list for method output_type
-	15, // [15:15] is the sub-list for extension type_name
+	16, // [16:16] is the sub-list for method input_type
-	15, // [15:15] is the sub-list for extension extendee
+	16, // [16:16] is the sub-list for extension type_name
-	0,  // [0:15] is the sub-list for field type_name
+	16, // [16:16] is the sub-list for extension extendee
+	0,  // [0:16] is the sub-list for field type_name
 }
 
 func init() { file_app_proxyman_config_proto_init() }
@@ -1055,7 +1170,7 @@ func file_app_proxyman_config_proto_init() {
 			}
 		}
 		file_app_proxyman_config_proto_msgTypes[8].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*AllocationStrategy_AllocationStrategyConcurrency); i {
+			switch v := v.(*SingMultiplexConfig); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -1067,6 +1182,18 @@ func file_app_proxyman_config_proto_init() {
 			}
 		}
 		file_app_proxyman_config_proto_msgTypes[9].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*AllocationStrategy_AllocationStrategyConcurrency); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_app_proxyman_config_proto_msgTypes[10].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*AllocationStrategy_AllocationStrategyRefresh); i {
 			case 0:
 				return &v.state
@@ -1085,7 +1212,7 @@ func file_app_proxyman_config_proto_init() {
 			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
 			RawDescriptor: file_app_proxyman_config_proto_rawDesc,
 			NumEnums:      2,
-			NumMessages:   10,
+			NumMessages:   11,
 			NumExtensions: 0,
 			NumServices:   0,
 		},

app/proxyman/config.proto

@@ -27,13 +27,13 @@ message AllocationStrategy {
 
   Type type = 1;
 
-  message AllocationStrategyConcurrency { uint32 value = 1; }
+  message AllocationStrategyConcurrency {uint32 value = 1;}
 
   // Number of handlers (ports) running in parallel.
   // Default value is 3 if unset.
   AllocationStrategyConcurrency concurrency = 2;
 
-  message AllocationStrategyRefresh { uint32 value = 1; }
+  message AllocationStrategyRefresh {uint32 value = 1;}
 
   // Number of minutes before a handler is regenerated.
   // Default value is 5 if unset.
@@ -73,7 +73,7 @@ message ReceiverConfig {
   reserved 6;
   // Override domains for the given protocol.
   // Deprecated. Use sniffing_settings.
-  repeated KnownProtocols domain_override = 7 [ deprecated = true ];
+  repeated KnownProtocols domain_override = 7 [deprecated = true];
   SniffingConfig sniffing_settings = 8;
 }
 
@@ -91,6 +91,7 @@ message SenderConfig {
   xray.transport.internet.StreamConfig stream_settings = 2;
   xray.transport.internet.ProxyConfig proxy_settings = 3;
   MultiplexingConfig multiplex_settings = 4;
+  SingMultiplexConfig smux_settings = 5;
 }
 
 message MultiplexingConfig {
@@ -103,3 +104,12 @@ message MultiplexingConfig {
   // "reject" (default), "allow" or "skip".
   string xudpProxyUDP443 = 4;
 }
+
+message SingMultiplexConfig {
+  bool enabled = 1;
+  string protocol = 2;
+  int32 max_connections = 3;
+  int32 min_streams = 4;
+  int32 max_streams = 5;
+  bool padding = 6;
+}

app/proxyman/inbound/worker.go

@@ -60,7 +60,6 @@ func (w *tcpWorker) callback(conn stat.Connection) {
 	sid := session.NewID()
 	ctx = session.ContextWithID(ctx, sid)
 
-	var outbound = &session.Outbound{}
 	if w.recvOrigDest {
 		var dest net.Destination
 		switch getTProxyType(w.stream) {
@@ -75,10 +74,11 @@ func (w *tcpWorker) callback(conn stat.Connection) {
 			dest = net.DestinationFromAddr(conn.LocalAddr())
 		}
 		if dest.IsValid() {
-			outbound.Target = dest
+			ctx = session.ContextWithOutbound(ctx, &session.Outbound{
+				Target: dest,
+			})
 		}
 	}
-	ctx = session.ContextWithOutbound(ctx, outbound)
 
 	if w.uplinkCounter != nil || w.downlinkCounter != nil {
 		conn = &stat.CounterConnection{
@@ -362,7 +362,7 @@ func (w *udpWorker) clean() error {
 	}
 
 	for addr, conn := range w.activeConn {
-		if nowSec-atomic.LoadInt64(&conn.lastActivityTime) > 2*60 {
+		if nowSec-atomic.LoadInt64(&conn.lastActivityTime) > 5*60 { // TODO Timeout too small
 			if !conn.inactive {
 				conn.setInactive()
 				delete(w.activeConn, addr)

app/proxyman/outbound/handler.go

@@ -6,13 +6,15 @@ import (
 	"io"
 	"os"
 
+	sing_mux "github.com/sagernet/sing-mux"
+	sing_net "github.com/sagernet/sing/common/network"
 	"github.com/xtls/xray-core/app/proxyman"
 	"github.com/xtls/xray-core/common"
-	"github.com/xtls/xray-core/common/buf"
 	"github.com/xtls/xray-core/common/mux"
 	"github.com/xtls/xray-core/common/net"
 	"github.com/xtls/xray-core/common/net/cnc"
 	"github.com/xtls/xray-core/common/session"
+	"github.com/xtls/xray-core/common/singbridge"
 	"github.com/xtls/xray-core/core"
 	"github.com/xtls/xray-core/features/outbound"
 	"github.com/xtls/xray-core/features/policy"
@@ -59,6 +61,8 @@ type Handler struct {
 	outboundManager outbound.Manager
 	mux             *mux.ClientManager
 	xudp            *mux.ClientManager
+	smux            *sing_mux.Client
+
 	udp443          string
 	uplinkCounter   stats.Counter
 	downlinkCounter stats.Counter
@@ -155,6 +159,21 @@ func NewHandler(ctx context.Context, config *core.OutboundHandlerConfig) (outbou
 			h.udp443 = config.XudpProxyUDP443
 		}
 	}
+	if h.senderSettings != nil && h.senderSettings.SmuxSettings != nil {
+		if config := h.senderSettings.SmuxSettings; config.Enabled {
+			h.smux, err = sing_mux.NewClient(sing_mux.Options{
+				Dialer:         singbridge.NewOutboundDialer(proxyHandler, h),
+				Protocol:       config.Protocol,
+				MaxConnections: int(config.MaxConnections),
+				MinStreams:     int(config.MinStreams),
+				MaxStreams:     int(config.MaxStreams),
+				Padding:        config.Padding,
+			})
+			if err != nil {
+				return nil, newError("failed to create sing mux client").Base(err)
+			}
+		}
+	}
 
 	h.proxy = proxyHandler
 	return h, nil
@@ -167,11 +186,6 @@ func (h *Handler) Tag() string {
 
 // Dispatch implements proxy.Outbound.Dispatch.
 func (h *Handler) Dispatch(ctx context.Context, link *transport.Link) {
-	outbound := session.OutboundFromContext(ctx)
-	if outbound.Target.Network == net.Network_UDP && outbound.OriginalTarget.Address != nil && outbound.OriginalTarget.Address != outbound.Target.Address {
-		link.Reader = &buf.EndpointOverrideReader{Reader: link.Reader, Dest: outbound.Target.Address, OriginalDest: outbound.OriginalTarget.Address}
-		link.Writer = &buf.EndpointOverrideWriter{Writer: link.Writer, Dest: outbound.Target.Address, OriginalDest: outbound.OriginalTarget.Address}
-	}
 	if h.mux != nil {
 		test := func(err error) {
 			if err != nil {
@@ -181,6 +195,7 @@ func (h *Handler) Dispatch(ctx context.Context, link *transport.Link) {
 				common.Interrupt(link.Writer)
 			}
 		}
+		outbound := session.OutboundFromContext(ctx)
 		if outbound.Target.Network == net.Network_UDP && outbound.Target.Port == 443 {
 			switch h.udp443 {
 			case "reject":
@@ -202,6 +217,34 @@ func (h *Handler) Dispatch(ctx context.Context, link *transport.Link) {
 			return
 		}
 	}
+	if h.smux != nil {
+		test := func(err error) {
+			if err != nil {
+				err := newError("failed to process mux outbound traffic").Base(err)
+				session.SubmitOutboundErrorToOriginator(ctx, err)
+				err.WriteToLog(session.ExportIDToError(ctx))
+				common.Interrupt(link.Writer)
+			}
+		}
+		inbound := session.InboundFromContext(ctx)
+		outbound := session.OutboundFromContext(ctx)
+		if outbound.Target.Network == net.Network_TCP {
+			conn, err := h.smux.DialContext(ctx, sing_net.NetworkTCP, singbridge.ToSocksaddr(outbound.Target))
+			if err != nil {
+				test(err)
+				return
+			}
+			test(singbridge.CopyConn(ctx, inbound.Conn, link, conn))
+		} else {
+			packetConn, err := h.smux.ListenPacket(ctx, singbridge.ToSocksaddr(outbound.Target))
+			if err != nil {
+				test(err)
+				return
+			}
+			test(singbridge.CopyPacketConn(ctx, inbound.Conn, link, outbound.Target, packetConn))
+		}
+		return
+	}
 out:
 	err := h.proxy.Process(ctx, link, h)
 	if err != nil {
@@ -274,12 +317,7 @@ func (h *Handler) Dial(ctx context.Context, dest net.Destination) (stat.Connecti
 	}
 
 	conn, err := internet.Dial(ctx, dest, h.streamSettings)
-	conn = h.getStatCouterConnection(conn)
+	return h.getStatCouterConnection(conn), err
-	outbound := session.OutboundFromContext(ctx)
-	if outbound != nil {
-		outbound.Conn = conn
-	}
-	return conn, err
 }
 
 func (h *Handler) getStatCouterConnection(conn stat.Connection) stat.Connection {

app/proxyman/outbound/uot.go

@@ -11,9 +11,6 @@ import (
 )
 
 func (h *Handler) getUoTConnection(ctx context.Context, dest net.Destination) (stat.Connection, error) {
-	if dest.Address == nil {
-		return nil, newError("nil destination address")
-	}
 	if !dest.Address.Family().IsDomain() {
 		return nil, os.ErrInvalid
 	}

app/reverse/bridge.go

@@ -4,6 +4,7 @@ import (
 	"context"
 	"time"
 
+	"github.com/golang/protobuf/proto"
 	"github.com/xtls/xray-core/common/mux"
 	"github.com/xtls/xray-core/common/net"
 	"github.com/xtls/xray-core/common/session"
@@ -11,7 +12,6 @@ import (
 	"github.com/xtls/xray-core/features/routing"
 	"github.com/xtls/xray-core/transport"
 	"github.com/xtls/xray-core/transport/pipe"
-	"google.golang.org/protobuf/proto"
 )
 
 // Bridge is a component in reverse proxy, that relays connections from Portal to local address.

app/reverse/config.pb.go

@@ -1,7 +1,7 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.31.0
+// 	protoc-gen-go v1.28.1
-// 	protoc        v4.23.1
+// 	protoc        v3.21.12
 // source: app/reverse/config.proto
 
 package reverse

app/reverse/portal.go

@@ -5,6 +5,7 @@ import (
 	"sync"
 	"time"
 
+	"github.com/golang/protobuf/proto"
 	"github.com/xtls/xray-core/common"
 	"github.com/xtls/xray-core/common/buf"
 	"github.com/xtls/xray-core/common/mux"
@@ -14,7 +15,6 @@ import (
 	"github.com/xtls/xray-core/features/outbound"
 	"github.com/xtls/xray-core/transport"
 	"github.com/xtls/xray-core/transport/pipe"
-	"google.golang.org/protobuf/proto"
 )
 
 type Portal struct {

app/router/command/command.pb.go

@@ -1,7 +1,7 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.31.0
+// 	protoc-gen-go v1.28.1
-// 	protoc        v4.23.1
+// 	protoc        v3.21.12
 // source: app/router/command/command.proto
 
 package command

app/router/command/command_grpc.pb.go

@@ -1,7 +1,7 @@
 // Code generated by protoc-gen-go-grpc. DO NOT EDIT.
 // versions:
-// - protoc-gen-go-grpc v1.3.0
+// - protoc-gen-go-grpc v1.2.0
-// - protoc             v4.23.1
+// - protoc             v3.21.12
 // source: app/router/command/command.proto
 
 package command
@@ -18,11 +18,6 @@ import (
 // Requires gRPC-Go v1.32.0 or later.
 const _ = grpc.SupportPackageIsVersion7
 
-const (
-	RoutingService_SubscribeRoutingStats_FullMethodName = "/xray.app.router.command.RoutingService/SubscribeRoutingStats"
-	RoutingService_TestRoute_FullMethodName             = "/xray.app.router.command.RoutingService/TestRoute"
-)
-
 // RoutingServiceClient is the client API for RoutingService service.
 //
 // For semantics around ctx use and closing/ending streaming RPCs, please refer to https://pkg.go.dev/google.golang.org/grpc/?tab=doc#ClientConn.NewStream.
@@ -40,7 +35,7 @@ func NewRoutingServiceClient(cc grpc.ClientConnInterface) RoutingServiceClient {
 }
 
 func (c *routingServiceClient) SubscribeRoutingStats(ctx context.Context, in *SubscribeRoutingStatsRequest, opts ...grpc.CallOption) (RoutingService_SubscribeRoutingStatsClient, error) {
-	stream, err := c.cc.NewStream(ctx, &RoutingService_ServiceDesc.Streams[0], RoutingService_SubscribeRoutingStats_FullMethodName, opts...)
+	stream, err := c.cc.NewStream(ctx, &RoutingService_ServiceDesc.Streams[0], "/xray.app.router.command.RoutingService/SubscribeRoutingStats", opts...)
 	if err != nil {
 		return nil, err
 	}
@@ -73,7 +68,7 @@ func (x *routingServiceSubscribeRoutingStatsClient) Recv() (*RoutingContext, err
 
 func (c *routingServiceClient) TestRoute(ctx context.Context, in *TestRouteRequest, opts ...grpc.CallOption) (*RoutingContext, error) {
 	out := new(RoutingContext)
-	err := c.cc.Invoke(ctx, RoutingService_TestRoute_FullMethodName, in, out, opts...)
+	err := c.cc.Invoke(ctx, "/xray.app.router.command.RoutingService/TestRoute", in, out, opts...)
 	if err != nil {
 		return nil, err
 	}
@@ -143,7 +138,7 @@ func _RoutingService_TestRoute_Handler(srv interface{}, ctx context.Context, dec
 	}
 	info := &grpc.UnaryServerInfo{
 		Server:     srv,
-		FullMethod: RoutingService_TestRoute_FullMethodName,
+		FullMethod: "/xray.app.router.command.RoutingService/TestRoute",
 	}
 	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
 		return srv.(RoutingServiceServer).TestRoute(ctx, req.(*TestRouteRequest))

app/router/condition.go

@@ -1,12 +1,13 @@
 package router
 
 import (
-	"regexp"
 	"strings"
 
 	"github.com/xtls/xray-core/common/net"
 	"github.com/xtls/xray-core/common/strmatcher"
 	"github.com/xtls/xray-core/features/routing"
+	"go.starlark.net/starlark"
+	"go.starlark.net/syntax"
 )
 
 type Condition interface {
@@ -283,22 +284,44 @@ func (m *ProtocolMatcher) Apply(ctx routing.Context) bool {
 }
 
 type AttributeMatcher struct {
-	configuredKeys map[string]*regexp.Regexp
+	program *starlark.Program
+}
+
+func NewAttributeMatcher(code string) (*AttributeMatcher, error) {
+	starFile, err := syntax.Parse("attr.star", "satisfied=("+code+")", 0)
+	if err != nil {
+		return nil, newError("attr rule").Base(err)
+	}
+	p, err := starlark.FileProgram(starFile, func(name string) bool {
+		return name == "attrs"
+	})
+	if err != nil {
+		return nil, err
+	}
+	return &AttributeMatcher{
+		program: p,
+	}, nil
 }
 
 // Match implements attributes matching.
 func (m *AttributeMatcher) Match(attrs map[string]string) bool {
-	// header keys are case insensitive most likely. So we do a convert
+	attrsDict := new(starlark.Dict)
-	httpHeaders := make(map[string]string)
 	for key, value := range attrs {
-		httpHeaders[strings.ToLower(key)] = value
+		attrsDict.SetKey(starlark.String(key), starlark.String(value))
 	}
-	for key, regex := range m.configuredKeys {
+
-		if a, ok := httpHeaders[key]; !ok || !regex.MatchString(a) {
+	predefined := make(starlark.StringDict)
-			return false
+	predefined["attrs"] = attrsDict
-		}
+
+	thread := &starlark.Thread{
+		Name: "matcher",
 	}
-	return true
+	results, err := m.program.Init(thread, predefined)
+	if err != nil {
+		newError("attr matcher").Base(err).WriteToLog()
+	}
+	satisfied := results["satisfied"]
+	return satisfied != nil && bool(satisfied.Truth())
 }
 
 // Apply implements Condition.

app/router/condition_geoip.go

@@ -1,49 +1,81 @@
 package router
 
 import (
-	"net/netip"
+	"encoding/binary"
-	"strconv"
+	"sort"
 
 	"github.com/xtls/xray-core/common/net"
-	"go4.org/netipx"
 )
 
+type ipv6 struct {
+	a uint64
+	b uint64
+}
+
 type GeoIPMatcher struct {
 	countryCode  string
 	reverseMatch bool
-	ip4          *netipx.IPSet
+	ip4          []uint32
-	ip6          *netipx.IPSet
+	prefix4      []uint8
+	ip6          []ipv6
+	prefix6      []uint8
+}
+
+func normalize4(ip uint32, prefix uint8) uint32 {
+	return (ip >> (32 - prefix)) << (32 - prefix)
+}
+
+func normalize6(ip ipv6, prefix uint8) ipv6 {
+	if prefix <= 64 {
+		ip.a = (ip.a >> (64 - prefix)) << (64 - prefix)
+		ip.b = 0
+	} else {
+		ip.b = (ip.b >> (128 - prefix)) << (128 - prefix)
+	}
+	return ip
 }
 
 func (m *GeoIPMatcher) Init(cidrs []*CIDR) error {
-	var builder4, builder6 netipx.IPSetBuilder
+	ip4Count := 0
+	ip6Count := 0
 
 	for _, cidr := range cidrs {
-		ip := net.IP(cidr.GetIp())
+		ip := cidr.Ip
-		ipPrefixString := ip.String() + "/" + strconv.Itoa(int(cidr.GetPrefix()))
-		ipPrefix, err := netip.ParsePrefix(ipPrefixString)
-		if err != nil {
-			return err
-		}
-
 		switch len(ip) {
-		case net.IPv4len:
+		case 4:
-			builder4.AddPrefix(ipPrefix)
+			ip4Count++
-		case net.IPv6len:
+		case 16:
-			builder6.AddPrefix(ipPrefix)
+			ip6Count++
+		default:
+			return newError("unexpect ip length: ", len(ip))
 		}
 	}
 
-	if ip4, err := builder4.IPSet(); err != nil {
+	cidrList := CIDRList(cidrs)
-		return err
+	sort.Sort(&cidrList)
-	} else {
-		m.ip4 = ip4
-	}
 
-	if ip6, err := builder6.IPSet(); err != nil {
+	m.ip4 = make([]uint32, 0, ip4Count)
-		return err
+	m.prefix4 = make([]uint8, 0, ip4Count)
-	} else {
+	m.ip6 = make([]ipv6, 0, ip6Count)
-		m.ip6 = ip6
+	m.prefix6 = make([]uint8, 0, ip6Count)
+
+	for _, cidr := range cidrList {
+		ip := cidr.Ip
+		prefix := uint8(cidr.Prefix)
+		switch len(ip) {
+		case 4:
+			m.ip4 = append(m.ip4, normalize4(binary.BigEndian.Uint32(ip), prefix))
+			m.prefix4 = append(m.prefix4, prefix)
+		case 16:
+			ip6 := ipv6{
+				a: binary.BigEndian.Uint64(ip[0:8]),
+				b: binary.BigEndian.Uint64(ip[8:16]),
+			}
+			ip6 = normalize6(ip6, prefix)
+
+			m.ip6 = append(m.ip6, ip6)
+			m.prefix6 = append(m.prefix6, prefix)
+		}
 	}
 
 	return nil
@@ -53,37 +85,91 @@ func (m *GeoIPMatcher) SetReverseMatch(isReverseMatch bool) {
 	m.reverseMatch = isReverseMatch
 }
 
-func (m *GeoIPMatcher) match4(ip net.IP) bool {
+func (m *GeoIPMatcher) match4(ip uint32) bool {
-	nip, ok := netipx.FromStdIP(ip)
+	if len(m.ip4) == 0 {
-	if !ok {
 		return false
 	}
 
-	return m.ip4.Contains(nip)
+	if ip < m.ip4[0] {
+		return false
+	}
+
+	size := uint32(len(m.ip4))
+	l := uint32(0)
+	r := size
+	for l < r {
+		x := ((l + r) >> 1)
+		if ip < m.ip4[x] {
+			r = x
+			continue
+		}
+
+		nip := normalize4(ip, m.prefix4[x])
+		if nip == m.ip4[x] {
+			return true
+		}
+
+		l = x + 1
+	}
+
+	return l > 0 && normalize4(ip, m.prefix4[l-1]) == m.ip4[l-1]
 }
 
-func (m *GeoIPMatcher) match6(ip net.IP) bool {
+func less6(a ipv6, b ipv6) bool {
-	nip, ok := netipx.FromStdIP(ip)
+	return a.a < b.a || (a.a == b.a && a.b < b.b)
-	if !ok {
+}
+
+func (m *GeoIPMatcher) match6(ip ipv6) bool {
+	if len(m.ip6) == 0 {
 		return false
 	}
 
-	return m.ip6.Contains(nip)
+	if less6(ip, m.ip6[0]) {
+		return false
+	}
+
+	size := uint32(len(m.ip6))
+	l := uint32(0)
+	r := size
+	for l < r {
+		x := (l + r) / 2
+		if less6(ip, m.ip6[x]) {
+			r = x
+			continue
+		}
+
+		if normalize6(ip, m.prefix6[x]) == m.ip6[x] {
+			return true
+		}
+
+		l = x + 1
+	}
+
+	return l > 0 && normalize6(ip, m.prefix6[l-1]) == m.ip6[l-1]
 }
 
 // Match returns true if the given ip is included by the GeoIP.
 func (m *GeoIPMatcher) Match(ip net.IP) bool {
-	isMatched := false
 	switch len(ip) {
-	case net.IPv4len:
+	case 4:
-		isMatched = m.match4(ip)
+		if m.reverseMatch {
-	case net.IPv6len:
+			return !m.match4(binary.BigEndian.Uint32(ip))
-		isMatched = m.match6(ip)
+		}
+		return m.match4(binary.BigEndian.Uint32(ip))
+	case 16:
+		if m.reverseMatch {
+			return !m.match6(ipv6{
+				a: binary.BigEndian.Uint64(ip[0:8]),
+				b: binary.BigEndian.Uint64(ip[8:16]),
+			})
+		}
+		return m.match6(ipv6{
+			a: binary.BigEndian.Uint64(ip[0:8]),
+			b: binary.BigEndian.Uint64(ip[8:16]),
+		})
+	default:
+		return false
 	}
-	if m.reverseMatch {
-		return !isMatched
-	}
-	return isMatched
 }
 
 // GeoIPMatcherContainer is a container for GeoIPMatchers. It keeps unique copies of GeoIPMatcher by country code.

app/router/condition_geoip_test.go

@@ -5,12 +5,12 @@ import (
 	"path/filepath"
 	"testing"
 
+	"github.com/golang/protobuf/proto"
 	"github.com/xtls/xray-core/app/router"
 	"github.com/xtls/xray-core/common"
 	"github.com/xtls/xray-core/common/net"
 	"github.com/xtls/xray-core/common/platform"
 	"github.com/xtls/xray-core/common/platform/filesystem"
-	"google.golang.org/protobuf/proto"
 )
 
 func init() {
@@ -53,7 +53,7 @@ func TestGeoIPMatcherContainer(t *testing.T) {
 }
 
 func TestGeoIPMatcher(t *testing.T) {
-	cidrList := []*router.CIDR{
+	cidrList := router.CIDRList{
 		{Ip: []byte{0, 0, 0, 0}, Prefix: 8},
 		{Ip: []byte{10, 0, 0, 0}, Prefix: 8},
 		{Ip: []byte{100, 64, 0, 0}, Prefix: 10},
@@ -124,40 +124,8 @@ func TestGeoIPMatcher(t *testing.T) {
 	}
 }
 
-func TestGeoIPMatcherRegression(t *testing.T) {
-	cidrList := []*router.CIDR{
-		{Ip: []byte{98, 108, 20, 0}, Prefix: 22},
-		{Ip: []byte{98, 108, 20, 0}, Prefix: 23},
-	}
-
-	matcher := &router.GeoIPMatcher{}
-	common.Must(matcher.Init(cidrList))
-
-	testCases := []struct {
-		Input  string
-		Output bool
-	}{
-		{
-			Input:  "98.108.22.11",
-			Output: true,
-		},
-		{
-			Input:  "98.108.25.0",
-			Output: false,
-		},
-	}
-
-	for _, testCase := range testCases {
-		ip := net.ParseAddress(testCase.Input).IP()
-		actual := matcher.Match(ip)
-		if actual != testCase.Output {
-			t.Error("expect input", testCase.Input, "to be", testCase.Output, ", but actually", actual)
-		}
-	}
-}
-
 func TestGeoIPReverseMatcher(t *testing.T) {
-	cidrList := []*router.CIDR{
+	cidrList := router.CIDRList{
 		{Ip: []byte{8, 8, 8, 8}, Prefix: 32},
 		{Ip: []byte{91, 108, 4, 0}, Prefix: 16},
 	}

app/router/condition_test.go

@@ -6,6 +6,7 @@ import (
 	"strconv"
 	"testing"
 
+	"github.com/golang/protobuf/proto"
 	. "github.com/xtls/xray-core/app/router"
 	"github.com/xtls/xray-core/common"
 	"github.com/xtls/xray-core/common/errors"
@@ -17,7 +18,6 @@ import (
 	"github.com/xtls/xray-core/common/session"
 	"github.com/xtls/xray-core/features/routing"
 	routing_session "github.com/xtls/xray-core/features/routing/session"
-	"google.golang.org/protobuf/proto"
 )
 
 func init() {
@@ -307,10 +307,8 @@ func TestRoutingRule(t *testing.T) {
 		},
 		{
 			rule: &RoutingRule{
-				Protocol: []string{"http"},
+				Protocol:   []string{"http"},
-				Attributes: map[string]string{
+				Attributes: "attrs[':path'].startswith('/test')",
-					":path": "/test",
-				},
 			},
 			test: []ruleTest{
 				{
@@ -319,19 +317,6 @@ func TestRoutingRule(t *testing.T) {
 				},
 			},
 		},
-		{
-			rule: &RoutingRule{
-				Attributes: map[string]string{
-					"Custom": "p([a-z]+)ch",
-				},
-			},
-			test: []ruleTest{
-				{
-					input:  withContent(&session.Content{Attributes: map[string]string{"custom": "peach"}}),
-					output: true,
-				},
-			},
-		},
 	}
 
 	for _, test := range cases {

app/router/config.go

@@ -1,14 +1,50 @@
 package router
 
 import (
-	"regexp"
-	"strings"
-
 	"github.com/xtls/xray-core/common/net"
 	"github.com/xtls/xray-core/features/outbound"
 	"github.com/xtls/xray-core/features/routing"
 )
 
+// CIDRList is an alias of []*CIDR to provide sort.Interface.
+type CIDRList []*CIDR
+
+// Len implements sort.Interface.
+func (l *CIDRList) Len() int {
+	return len(*l)
+}
+
+// Less implements sort.Interface.
+func (l *CIDRList) Less(i int, j int) bool {
+	ci := (*l)[i]
+	cj := (*l)[j]
+
+	if len(ci.Ip) < len(cj.Ip) {
+		return true
+	}
+
+	if len(ci.Ip) > len(cj.Ip) {
+		return false
+	}
+
+	for k := 0; k < len(ci.Ip); k++ {
+		if ci.Ip[k] < cj.Ip[k] {
+			return true
+		}
+
+		if ci.Ip[k] > cj.Ip[k] {
+			return false
+		}
+	}
+
+	return ci.Prefix < cj.Prefix
+}
+
+// Swap implements sort.Interface.
+func (l *CIDRList) Swap(i int, j int) {
+	(*l)[i], (*l)[j] = (*l)[j], (*l)[i]
+}
+
 type Rule struct {
 	Tag       string
 	Balancer  *Balancer
@@ -107,11 +143,11 @@ func (rr *RoutingRule) BuildCondition() (Condition, error) {
 	}
 
 	if len(rr.Attributes) > 0 {
-		configuredKeys := make(map[string]*regexp.Regexp)
+		cond, err := NewAttributeMatcher(rr.Attributes)
-		for key, value := range rr.Attributes {
+		if err != nil {
-			configuredKeys[strings.ToLower(key)] = regexp.MustCompile(value)
+			return nil, err
 		}
-		conds.Add(&AttributeMatcher{configuredKeys})
+		conds.Add(cond)
 	}
 
 	if conds.Len() == 0 {

app/router/config.pb.go

@@ -1,7 +1,7 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.31.0
+// 	protoc-gen-go v1.28.1
-// 	protoc        v4.23.1
+// 	protoc        v3.21.12
 // source: app/router/config.proto
 
 package router
@@ -486,7 +486,7 @@ type RoutingRule struct {
 	// List of CIDRs for target IP address matching.
 	// Deprecated. Use geoip below.
 	//
-	// Deprecated: Marked as deprecated in app/router/config.proto.
+	// Deprecated: Do not use.
 	Cidr []*CIDR `protobuf:"bytes,3,rep,name=cidr,proto3" json:"cidr,omitempty"`
 	// List of GeoIPs for target IP address matching. If this entry exists, the
 	// cidr above will have no effect. GeoIP fields with the same country code are
@@ -496,30 +496,30 @@ type RoutingRule struct {
 	// A range of port [from, to]. If the destination port is in this range, this
 	// rule takes effect. Deprecated. Use port_list.
 	//
-	// Deprecated: Marked as deprecated in app/router/config.proto.
+	// Deprecated: Do not use.
 	PortRange *net.PortRange `protobuf:"bytes,4,opt,name=port_range,json=portRange,proto3" json:"port_range,omitempty"`
 	// List of ports.
 	PortList *net.PortList `protobuf:"bytes,14,opt,name=port_list,json=portList,proto3" json:"port_list,omitempty"`
 	// List of networks. Deprecated. Use networks.
 	//
-	// Deprecated: Marked as deprecated in app/router/config.proto.
+	// Deprecated: Do not use.
 	NetworkList *net.NetworkList `protobuf:"bytes,5,opt,name=network_list,json=networkList,proto3" json:"network_list,omitempty"`
 	// List of networks for matching.
 	Networks []net.Network `protobuf:"varint,13,rep,packed,name=networks,proto3,enum=xray.common.net.Network" json:"networks,omitempty"`
 	// List of CIDRs for source IP address matching.
 	//
-	// Deprecated: Marked as deprecated in app/router/config.proto.
+	// Deprecated: Do not use.
 	SourceCidr []*CIDR `protobuf:"bytes,6,rep,name=source_cidr,json=sourceCidr,proto3" json:"source_cidr,omitempty"`
 	// List of GeoIPs for source IP address matching. If this entry exists, the
 	// source_cidr above will have no effect.
 	SourceGeoip []*GeoIP `protobuf:"bytes,11,rep,name=source_geoip,json=sourceGeoip,proto3" json:"source_geoip,omitempty"`
 	// List of ports for source port matching.
-	SourcePortList *net.PortList     `protobuf:"bytes,16,opt,name=source_port_list,json=sourcePortList,proto3" json:"source_port_list,omitempty"`
+	SourcePortList *net.PortList `protobuf:"bytes,16,opt,name=source_port_list,json=sourcePortList,proto3" json:"source_port_list,omitempty"`
-	UserEmail      []string          `protobuf:"bytes,7,rep,name=user_email,json=userEmail,proto3" json:"user_email,omitempty"`
+	UserEmail      []string      `protobuf:"bytes,7,rep,name=user_email,json=userEmail,proto3" json:"user_email,omitempty"`
-	InboundTag     []string          `protobuf:"bytes,8,rep,name=inbound_tag,json=inboundTag,proto3" json:"inbound_tag,omitempty"`
+	InboundTag     []string      `protobuf:"bytes,8,rep,name=inbound_tag,json=inboundTag,proto3" json:"inbound_tag,omitempty"`
-	Protocol       []string          `protobuf:"bytes,9,rep,name=protocol,proto3" json:"protocol,omitempty"`
+	Protocol       []string      `protobuf:"bytes,9,rep,name=protocol,proto3" json:"protocol,omitempty"`
-	Attributes     map[string]string `protobuf:"bytes,15,rep,name=attributes,proto3" json:"attributes,omitempty" protobuf_key:"bytes,1,opt,name=key,proto3" protobuf_val:"bytes,2,opt,name=value,proto3"`
+	Attributes     string        `protobuf:"bytes,15,opt,name=attributes,proto3" json:"attributes,omitempty"`
-	DomainMatcher  string            `protobuf:"bytes,17,opt,name=domain_matcher,json=domainMatcher,proto3" json:"domain_matcher,omitempty"`
+	DomainMatcher  string        `protobuf:"bytes,17,opt,name=domain_matcher,json=domainMatcher,proto3" json:"domain_matcher,omitempty"`
 }
 
 func (x *RoutingRule) Reset() {
@@ -582,7 +582,7 @@ func (x *RoutingRule) GetDomain() []*Domain {
 	return nil
 }
 
-// Deprecated: Marked as deprecated in app/router/config.proto.
+// Deprecated: Do not use.
 func (x *RoutingRule) GetCidr() []*CIDR {
 	if x != nil {
 		return x.Cidr
@@ -597,7 +597,7 @@ func (x *RoutingRule) GetGeoip() []*GeoIP {
 	return nil
 }
 
-// Deprecated: Marked as deprecated in app/router/config.proto.
+// Deprecated: Do not use.
 func (x *RoutingRule) GetPortRange() *net.PortRange {
 	if x != nil {
 		return x.PortRange
@@ -612,7 +612,7 @@ func (x *RoutingRule) GetPortList() *net.PortList {
 	return nil
 }
 
-// Deprecated: Marked as deprecated in app/router/config.proto.
+// Deprecated: Do not use.
 func (x *RoutingRule) GetNetworkList() *net.NetworkList {
 	if x != nil {
 		return x.NetworkList
@@ -627,7 +627,7 @@ func (x *RoutingRule) GetNetworks() []net.Network {
 	return nil
 }
 
-// Deprecated: Marked as deprecated in app/router/config.proto.
+// Deprecated: Do not use.
 func (x *RoutingRule) GetSourceCidr() []*CIDR {
 	if x != nil {
 		return x.SourceCidr
@@ -670,11 +670,11 @@ func (x *RoutingRule) GetProtocol() []string {
 	return nil
 }
 
-func (x *RoutingRule) GetAttributes() map[string]string {
+func (x *RoutingRule) GetAttributes() string {
 	if x != nil {
 		return x.Attributes
 	}
-	return nil
+	return ""
 }
 
 func (x *RoutingRule) GetDomainMatcher() string {
@@ -969,7 +969,7 @@ var file_app_router_config_proto_rawDesc = []byte{
 	0x74, 0x65, 0x4c, 0x69, 0x73, 0x74, 0x12, 0x2e, 0x0a, 0x05, 0x65, 0x6e, 0x74, 0x72, 0x79, 0x18,
 	0x01, 0x20, 0x03, 0x28, 0x0b, 0x32, 0x18, 0x2e, 0x78, 0x72, 0x61, 0x79, 0x2e, 0x61, 0x70, 0x70,
 	0x2e, 0x72, 0x6f, 0x75, 0x74, 0x65, 0x72, 0x2e, 0x47, 0x65, 0x6f, 0x53, 0x69, 0x74, 0x65, 0x52,
-	0x05, 0x65, 0x6e, 0x74, 0x72, 0x79, 0x22, 0xa2, 0x07, 0x0a, 0x0b, 0x52, 0x6f, 0x75, 0x74, 0x69,
+	0x05, 0x65, 0x6e, 0x74, 0x72, 0x79, 0x22, 0xb5, 0x06, 0x0a, 0x0b, 0x52, 0x6f, 0x75, 0x74, 0x69,
 	0x6e, 0x67, 0x52, 0x75, 0x6c, 0x65, 0x12, 0x12, 0x0a, 0x03, 0x74, 0x61, 0x67, 0x18, 0x01, 0x20,
 	0x01, 0x28, 0x09, 0x48, 0x00, 0x52, 0x03, 0x74, 0x61, 0x67, 0x12, 0x25, 0x0a, 0x0d, 0x62, 0x61,
 	0x6c, 0x61, 0x6e, 0x63, 0x69, 0x6e, 0x67, 0x5f, 0x74, 0x61, 0x67, 0x18, 0x0c, 0x20, 0x01, 0x28,
@@ -1015,49 +1015,43 @@ var file_app_router_config_proto_rawDesc = []byte{
 	0x69, 0x6e, 0x62, 0x6f, 0x75, 0x6e, 0x64, 0x5f, 0x74, 0x61, 0x67, 0x18, 0x08, 0x20, 0x03, 0x28,
 	0x09, 0x52, 0x0a, 0x69, 0x6e, 0x62, 0x6f, 0x75, 0x6e, 0x64, 0x54, 0x61, 0x67, 0x12, 0x1a, 0x0a,
 	0x08, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x63, 0x6f, 0x6c, 0x18, 0x09, 0x20, 0x03, 0x28, 0x09, 0x52,
-	0x08, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x63, 0x6f, 0x6c, 0x12, 0x4c, 0x0a, 0x0a, 0x61, 0x74, 0x74,
+	0x08, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x63, 0x6f, 0x6c, 0x12, 0x1e, 0x0a, 0x0a, 0x61, 0x74, 0x74,
-	0x72, 0x69, 0x62, 0x75, 0x74, 0x65, 0x73, 0x18, 0x0f, 0x20, 0x03, 0x28, 0x0b, 0x32, 0x2c, 0x2e,
+	0x72, 0x69, 0x62, 0x75, 0x74, 0x65, 0x73, 0x18, 0x0f, 0x20, 0x01, 0x28, 0x09, 0x52, 0x0a, 0x61,
-	0x78, 0x72, 0x61, 0x79, 0x2e, 0x61, 0x70, 0x70, 0x2e, 0x72, 0x6f, 0x75, 0x74, 0x65, 0x72, 0x2e,
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 }
 
 var (
@@ -1073,7 +1067,7 @@ func file_app_router_config_proto_rawDescGZIP() []byte {
 }
 
 var file_app_router_config_proto_enumTypes = make([]protoimpl.EnumInfo, 2)
-var file_app_router_config_proto_msgTypes = make([]protoimpl.MessageInfo, 11)
+var file_app_router_config_proto_msgTypes = make([]protoimpl.MessageInfo, 10)
 var file_app_router_config_proto_goTypes = []interface{}{
 	(Domain_Type)(0),           // 0: xray.app.router.Domain.Type
 	(Config_DomainStrategy)(0), // 1: xray.app.router.Config.DomainStrategy
@@ -1087,11 +1081,10 @@ var file_app_router_config_proto_goTypes = []interface{}{
 	(*BalancingRule)(nil),      // 9: xray.app.router.BalancingRule
 	(*Config)(nil),             // 10: xray.app.router.Config
 	(*Domain_Attribute)(nil),   // 11: xray.app.router.Domain.Attribute
-	nil,                        // 12: xray.app.router.RoutingRule.AttributesEntry
+	(*net.PortRange)(nil),      // 12: xray.common.net.PortRange
-	(*net.PortRange)(nil),      // 13: xray.common.net.PortRange
+	(*net.PortList)(nil),       // 13: xray.common.net.PortList
-	(*net.PortList)(nil),       // 14: xray.common.net.PortList
+	(*net.NetworkList)(nil),    // 14: xray.common.net.NetworkList
-	(*net.NetworkList)(nil),    // 15: xray.common.net.NetworkList
+	(net.Network)(0),           // 15: xray.common.net.Network
-	(net.Network)(0),           // 16: xray.common.net.Network
 }
 var file_app_router_config_proto_depIdxs = []int32{
 	0,  // 0: xray.app.router.Domain.type:type_name -> xray.app.router.Domain.Type
@@ -1103,22 +1096,21 @@ var file_app_router_config_proto_depIdxs = []int32{
 	2,  // 6: xray.app.router.RoutingRule.domain:type_name -> xray.app.router.Domain
 	3,  // 7: xray.app.router.RoutingRule.cidr:type_name -> xray.app.router.CIDR
 	4,  // 8: xray.app.router.RoutingRule.geoip:type_name -> xray.app.router.GeoIP
-	13, // 9: xray.app.router.RoutingRule.port_range:type_name -> xray.common.net.PortRange
+	12, // 9: xray.app.router.RoutingRule.port_range:type_name -> xray.common.net.PortRange
-	14, // 10: xray.app.router.RoutingRule.port_list:type_name -> xray.common.net.PortList
+	13, // 10: xray.app.router.RoutingRule.port_list:type_name -> xray.common.net.PortList
-	15, // 11: xray.app.router.RoutingRule.network_list:type_name -> xray.common.net.NetworkList
+	14, // 11: xray.app.router.RoutingRule.network_list:type_name -> xray.common.net.NetworkList
-	16, // 12: xray.app.router.RoutingRule.networks:type_name -> xray.common.net.Network
+	15, // 12: xray.app.router.RoutingRule.networks:type_name -> xray.common.net.Network
 	3,  // 13: xray.app.router.RoutingRule.source_cidr:type_name -> xray.app.router.CIDR
 	4,  // 14: xray.app.router.RoutingRule.source_geoip:type_name -> xray.app.router.GeoIP
-	14, // 15: xray.app.router.RoutingRule.source_port_list:type_name -> xray.common.net.PortList
+	13, // 15: xray.app.router.RoutingRule.source_port_list:type_name -> xray.common.net.PortList
-	12, // 16: xray.app.router.RoutingRule.attributes:type_name -> xray.app.router.RoutingRule.AttributesEntry
+	1,  // 16: xray.app.router.Config.domain_strategy:type_name -> xray.app.router.Config.DomainStrategy
-	1,  // 17: xray.app.router.Config.domain_strategy:type_name -> xray.app.router.Config.DomainStrategy
+	8,  // 17: xray.app.router.Config.rule:type_name -> xray.app.router.RoutingRule
-	8,  // 18: xray.app.router.Config.rule:type_name -> xray.app.router.RoutingRule
+	9,  // 18: xray.app.router.Config.balancing_rule:type_name -> xray.app.router.BalancingRule
-	9,  // 19: xray.app.router.Config.balancing_rule:type_name -> xray.app.router.BalancingRule
+	19, // [19:19] is the sub-list for method output_type
-	20, // [20:20] is the sub-list for method output_type
+	19, // [19:19] is the sub-list for method input_type
-	20, // [20:20] is the sub-list for method input_type
+	19, // [19:19] is the sub-list for extension type_name
-	20, // [20:20] is the sub-list for extension type_name
+	19, // [19:19] is the sub-list for extension extendee
-	20, // [20:20] is the sub-list for extension extendee
+	0,  // [0:19] is the sub-list for field type_name
-	0,  // [0:20] is the sub-list for field type_name
 }
 
 func init() { file_app_router_config_proto_init() }
@@ -1262,7 +1254,7 @@ func file_app_router_config_proto_init() {
 			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
 			RawDescriptor: file_app_router_config_proto_rawDesc,
 			NumEnums:      2,
-			NumMessages:   11,
+			NumMessages:   10,
 			NumExtensions: 0,
 			NumServices:   0,
 		},

app/router/config.proto

@@ -119,7 +119,7 @@ message RoutingRule {
   repeated string inbound_tag = 8;
   repeated string protocol = 9;
 
-  map<string, string> attributes = 15;
+  string attributes = 15;
 
   string domain_matcher = 17;
 }

app/stats/command/command.pb.go

@@ -1,7 +1,7 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.31.0
+// 	protoc-gen-go v1.28.1
-// 	protoc        v4.23.1
+// 	protoc        v3.21.12
 // source: app/stats/command/command.proto
 
 package command

app/stats/command/command_grpc.pb.go

@@ -1,7 +1,7 @@
 // Code generated by protoc-gen-go-grpc. DO NOT EDIT.
 // versions:
-// - protoc-gen-go-grpc v1.3.0
+// - protoc-gen-go-grpc v1.2.0
-// - protoc             v4.23.1
+// - protoc             v3.21.12
 // source: app/stats/command/command.proto
 
 package command
@@ -18,12 +18,6 @@ import (
 // Requires gRPC-Go v1.32.0 or later.
 const _ = grpc.SupportPackageIsVersion7
 
-const (
-	StatsService_GetStats_FullMethodName    = "/xray.app.stats.command.StatsService/GetStats"
-	StatsService_QueryStats_FullMethodName  = "/xray.app.stats.command.StatsService/QueryStats"
-	StatsService_GetSysStats_FullMethodName = "/xray.app.stats.command.StatsService/GetSysStats"
-)
-
 // StatsServiceClient is the client API for StatsService service.
 //
 // For semantics around ctx use and closing/ending streaming RPCs, please refer to https://pkg.go.dev/google.golang.org/grpc/?tab=doc#ClientConn.NewStream.
@@ -43,7 +37,7 @@ func NewStatsServiceClient(cc grpc.ClientConnInterface) StatsServiceClient {
 
 func (c *statsServiceClient) GetStats(ctx context.Context, in *GetStatsRequest, opts ...grpc.CallOption) (*GetStatsResponse, error) {
 	out := new(GetStatsResponse)
-	err := c.cc.Invoke(ctx, StatsService_GetStats_FullMethodName, in, out, opts...)
+	err := c.cc.Invoke(ctx, "/xray.app.stats.command.StatsService/GetStats", in, out, opts...)
 	if err != nil {
 		return nil, err
 	}
@@ -52,7 +46,7 @@ func (c *statsServiceClient) GetStats(ctx context.Context, in *GetStatsRequest,
 
 func (c *statsServiceClient) QueryStats(ctx context.Context, in *QueryStatsRequest, opts ...grpc.CallOption) (*QueryStatsResponse, error) {
 	out := new(QueryStatsResponse)
-	err := c.cc.Invoke(ctx, StatsService_QueryStats_FullMethodName, in, out, opts...)
+	err := c.cc.Invoke(ctx, "/xray.app.stats.command.StatsService/QueryStats", in, out, opts...)
 	if err != nil {
 		return nil, err
 	}
@@ -61,7 +55,7 @@ func (c *statsServiceClient) QueryStats(ctx context.Context, in *QueryStatsReque
 
 func (c *statsServiceClient) GetSysStats(ctx context.Context, in *SysStatsRequest, opts ...grpc.CallOption) (*SysStatsResponse, error) {
 	out := new(SysStatsResponse)
-	err := c.cc.Invoke(ctx, StatsService_GetSysStats_FullMethodName, in, out, opts...)
+	err := c.cc.Invoke(ctx, "/xray.app.stats.command.StatsService/GetSysStats", in, out, opts...)
 	if err != nil {
 		return nil, err
 	}
@@ -114,7 +108,7 @@ func _StatsService_GetStats_Handler(srv interface{}, ctx context.Context, dec fu
 	}
 	info := &grpc.UnaryServerInfo{
 		Server:     srv,
-		FullMethod: StatsService_GetStats_FullMethodName,
+		FullMethod: "/xray.app.stats.command.StatsService/GetStats",
 	}
 	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
 		return srv.(StatsServiceServer).GetStats(ctx, req.(*GetStatsRequest))
@@ -132,7 +126,7 @@ func _StatsService_QueryStats_Handler(srv interface{}, ctx context.Context, dec
 	}
 	info := &grpc.UnaryServerInfo{
 		Server:     srv,
-		FullMethod: StatsService_QueryStats_FullMethodName,
+		FullMethod: "/xray.app.stats.command.StatsService/QueryStats",
 	}
 	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
 		return srv.(StatsServiceServer).QueryStats(ctx, req.(*QueryStatsRequest))
@@ -150,7 +144,7 @@ func _StatsService_GetSysStats_Handler(srv interface{}, ctx context.Context, dec
 	}
 	info := &grpc.UnaryServerInfo{
 		Server:     srv,
-		FullMethod: StatsService_GetSysStats_FullMethodName,
+		FullMethod: "/xray.app.stats.command.StatsService/GetSysStats",
 	}
 	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
 		return srv.(StatsServiceServer).GetSysStats(ctx, req.(*SysStatsRequest))

app/stats/config.pb.go

@@ -1,7 +1,7 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.31.0
+// 	protoc-gen-go v1.28.1
-// 	protoc        v4.23.1
+// 	protoc        v3.21.12
 // source: app/stats/config.proto
 
 package stats

common/buf/copy.go

@@ -6,7 +6,6 @@ import (
 
 	"github.com/xtls/xray-core/common/errors"
 	"github.com/xtls/xray-core/common/signal"
-	"github.com/xtls/xray-core/features/stats"
 )
 
 type dataHandler func(MultiBuffer)
@@ -41,17 +40,6 @@ func CountSize(sc *SizeCounter) CopyOption {
 	}
 }
 
-// AddToStatCounter a CopyOption add to stat counter
-func AddToStatCounter(sc stats.Counter) CopyOption {
-	return func(handler *copyHandler) {
-		handler.onData = append(handler.onData, func(b MultiBuffer) {
-			if sc != nil {
-				sc.Add(int64(b.Len()))
-			}
-		})
-	}
-}
-
 type readError struct {
 	error
 }

common/buf/override.go

@@ -1,38 +0,0 @@
-package buf
-
-import (
-	"github.com/xtls/xray-core/common/net"
-)
-
-type EndpointOverrideReader struct {
-	Reader
-	Dest         net.Address
-	OriginalDest net.Address
-}
-
-func (r *EndpointOverrideReader) ReadMultiBuffer() (MultiBuffer, error) {
-	mb, err := r.Reader.ReadMultiBuffer()
-	if err == nil {
-		for _, b := range mb {
-			if b.UDP != nil && b.UDP.Address == r.OriginalDest {
-				b.UDP.Address = r.Dest
-			}
-		}
-	}
-	return mb, err
-}
-
-type EndpointOverrideWriter struct {
-	Writer
-	Dest         net.Address
-	OriginalDest net.Address
-}
-
-func (w *EndpointOverrideWriter) WriteMultiBuffer(mb MultiBuffer) error {
-	for _, b := range mb {
-		if b.UDP != nil && b.UDP.Address == w.Dest {
-			b.UDP.Address = w.OriginalDest
-		}
-	}
-	return w.Writer.WriteMultiBuffer(mb)
-}

common/buf/reader.go

@@ -7,7 +7,7 @@ import (
 	"github.com/xtls/xray-core/common/errors"
 )
 
-func readOneUDP(r io.Reader) (*Buffer, error) {
+func ReadOneUDP(r io.Reader) (*Buffer, error) {
 	b := New()
 	for i := 0; i < 64; i++ {
 		_, err := b.ReadFrom(r)
@@ -166,7 +166,7 @@ type PacketReader struct {
 
 // ReadMultiBuffer implements Reader.
 func (r *PacketReader) ReadMultiBuffer() (MultiBuffer, error) {
-	b, err := readOneUDP(r.Reader)
+	b, err := ReadOneUDP(r.Reader)
 	if err != nil {
 		return nil, err
 	}

common/buf/readv_reader.go

@@ -147,7 +147,7 @@ var useReadv bool
 
 func init() {
 	const defaultFlagValue = "NOT_DEFINED_AT_ALL"
-	value := platform.NewEnvFlag(platform.UseReadV).GetValue(func() string { return defaultFlagValue })
+	value := platform.NewEnvFlag("xray.buf.readv").GetValue(func() string { return defaultFlagValue })
 	switch value {
 	case defaultFlagValue, "auto", "enable":
 		useReadv = true

common/errors/multi_error.go

@@ -28,20 +28,3 @@ func Combine(maybeError ...error) error {
 	}
 	return errs
 }
-
-func AllEqual(expected error, actual error) bool {
-	switch errs := actual.(type) {
-	case multiError:
-		if len(errs) == 0 {
-			return false
-		}
-		for _, err := range errs {
-			if err != expected {
-				return false
-			}
-		}
-		return true
-	default:
-		return errs == expected
-	}
-}

common/log/log.pb.go

@@ -1,7 +1,7 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.31.0
+// 	protoc-gen-go v1.28.1
-// 	protoc        v4.23.1
+// 	protoc        v3.21.12
 // source: common/log/log.proto
 
 package log

common/mux/server.go

@@ -4,13 +4,17 @@ import (
 	"context"
 	"io"
 
+	sing_mux "github.com/sagernet/sing-mux"
+	"github.com/sagernet/sing/common/metadata"
 	"github.com/xtls/xray-core/common"
 	"github.com/xtls/xray-core/common/buf"
 	"github.com/xtls/xray-core/common/errors"
 	"github.com/xtls/xray-core/common/log"
 	"github.com/xtls/xray-core/common/net"
+	"github.com/xtls/xray-core/common/net/cnc"
 	"github.com/xtls/xray-core/common/protocol"
 	"github.com/xtls/xray-core/common/session"
+	"github.com/xtls/xray-core/common/singbridge"
 	"github.com/xtls/xray-core/core"
 	"github.com/xtls/xray-core/features/routing"
 	"github.com/xtls/xray-core/transport"
@@ -38,6 +42,14 @@ func (s *Server) Type() interface{} {
 // Dispatch implements routing.Dispatcher
 func (s *Server) Dispatch(ctx context.Context, dest net.Destination) (*transport.Link, error) {
 	if dest.Address != muxCoolAddress {
+		if dest.Address.Family() == net.AddressFamilyDomain && dest.Address.Domain() == sing_mux.Destination.Fqdn {
+			opts := pipe.OptionsFromContext(ctx)
+			uplinkReader, uplinkWriter := pipe.New(opts...)
+			downlinkReader, downlinkWriter := pipe.New(opts...)
+			conn := cnc.NewConnection(cnc.ConnectionInputMulti(downlinkWriter), cnc.ConnectionOutputMulti(uplinkReader))
+			go sing_mux.HandleConnection(ctx, singbridge.NewDispatcher(s.dispatcher, newError), singbridge.NewLogger(newError), conn, metadata.Metadata{Destination: singbridge.ToSocksaddr(dest)})
+			return &transport.Link{Reader: downlinkReader, Writer: uplinkWriter}, nil
+		}
 		return s.dispatcher.Dispatch(ctx, dest)
 	}
 
@@ -59,6 +71,10 @@ func (s *Server) Dispatch(ctx context.Context, dest net.Destination) (*transport
 // DispatchLink implements routing.Dispatcher
 func (s *Server) DispatchLink(ctx context.Context, dest net.Destination, link *transport.Link) error {
 	if dest.Address != muxCoolAddress {
+		if dest.Address.Family() == net.AddressFamilyDomain && dest.Address.Domain() == sing_mux.Destination.Fqdn {
+			conn := cnc.NewConnection(cnc.ConnectionInputMulti(link.Writer), cnc.ConnectionOutputMulti(link.Reader))
+			return sing_mux.HandleConnection(ctx, singbridge.NewDispatcher(s.dispatcher, newError), singbridge.NewLogger(newError), conn, metadata.Metadata{Destination: singbridge.ToSocksaddr(dest)})
+		}
 		return s.dispatcher.DispatchLink(ctx, dest, link)
 	}
 	_, err := NewServerWorker(ctx, s.dispatcher, link)

common/net/address.pb.go

@@ -1,7 +1,7 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.31.0
+// 	protoc-gen-go v1.28.1
-// 	protoc        v4.23.1
+// 	protoc        v3.21.12
 // source: common/net/address.proto
 
 package net

common/net/destination.pb.go

@@ -1,7 +1,7 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.31.0
+// 	protoc-gen-go v1.28.1
-// 	protoc        v4.23.1
+// 	protoc        v3.21.12
 // source: common/net/destination.proto
 
 package net

common/net/network.pb.go

@@ -1,7 +1,7 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.31.0
+// 	protoc-gen-go v1.28.1
-// 	protoc        v4.23.1
+// 	protoc        v3.21.12
 // source: common/net/network.proto
 
 package net
@@ -24,7 +24,7 @@ type Network int32
 
 const (
 	Network_Unknown Network = 0
-	// Deprecated: Marked as deprecated in common/net/network.proto.
+	// Deprecated: Do not use.
 	Network_RawTCP Network = 1
 	Network_TCP    Network = 2
 	Network_UDP    Network = 3

common/net/port.pb.go

@@ -1,7 +1,7 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.31.0
+// 	protoc-gen-go v1.28.1
-// 	protoc        v4.23.1
+// 	protoc        v3.21.12
 // source: common/net/port.proto
 
 package net

common/platform/others.go

@@ -17,13 +17,15 @@ func LineSeparator() string {
 }
 
 func GetToolLocation(file string) string {
-	toolPath := NewEnvFlag(ToolLocation).GetValue(getExecutableDir)
+	const name = "xray.location.tool"
+	toolPath := EnvFlag{Name: name, AltName: NormalizeEnvName(name)}.GetValue(getExecutableDir)
 	return filepath.Join(toolPath, file)
 }
 
 // GetAssetLocation searches for `file` in certain locations
 func GetAssetLocation(file string) string {
-	assetPath := NewEnvFlag(AssetLocation).GetValue(getExecutableDir)
+	const name = "xray.location.asset"
+	assetPath := NewEnvFlag(name).GetValue(getExecutableDir)
 	defPath := filepath.Join(assetPath, file)
 	for _, p := range []string{
 		defPath,

common/platform/platform.go

@@ -7,24 +7,6 @@ import (
 	"strings"
 )
 
-const (
-	PluginLocation  = "xray.location.plugin"
-	ConfigLocation  = "xray.location.config"
-	ConfdirLocation = "xray.location.confdir"
-	ToolLocation    = "xray.location.tool"
-	AssetLocation   = "xray.location.asset"
-
-	UseReadV         = "xray.buf.readv"
-	UseFreedomSplice = "xray.buf.splice"
-	UseVmessPadding  = "xray.vmess.padding"
-	UseCone          = "xray.cone.disabled"
-
-	BufferSize           = "xray.ray.buffer.size"
-	BrowserDialerAddress = "xray.browser.dialer"
-	XUDPLog              = "xray.xudp.show"
-	XUDPBaseKey          = "xray.xudp.basekey"
-)
-
 type EnvFlag struct {
 	Name    string
 	AltName string
@@ -85,17 +67,20 @@ func getExecutableSubDir(dir string) func() string {
 }
 
 func GetPluginDirectory() string {
-	pluginDir := NewEnvFlag(PluginLocation).GetValue(getExecutableSubDir("plugins"))
+	const name = "xray.location.plugin"
+	pluginDir := NewEnvFlag(name).GetValue(getExecutableSubDir("plugins"))
 	return pluginDir
 }
 
 func GetConfigurationPath() string {
-	configPath := NewEnvFlag(ConfigLocation).GetValue(getExecutableDir)
+	const name = "xray.location.config"
+	configPath := NewEnvFlag(name).GetValue(getExecutableDir)
 	return filepath.Join(configPath, "config.json")
 }
 
 // GetConfDirPath reads "xray.location.confdir"
 func GetConfDirPath() string {
-	configPath := NewEnvFlag(ConfdirLocation).GetValue(func() string { return "" })
+	const name = "xray.location.confdir"
+	configPath := NewEnvFlag(name).GetValue(func() string { return "" })
 	return configPath
 }

common/platform/windows.go

@@ -15,12 +15,14 @@ func LineSeparator() string {
 }
 
 func GetToolLocation(file string) string {
-	toolPath := NewEnvFlag(ToolLocation).GetValue(getExecutableDir)
+	const name = "xray.location.tool"
+	toolPath := EnvFlag{Name: name, AltName: NormalizeEnvName(name)}.GetValue(getExecutableDir)
 	return filepath.Join(toolPath, file+".exe")
 }
 
 // GetAssetLocation searches for `file` in the excutable dir
 func GetAssetLocation(file string) string {
-	assetPath := NewEnvFlag(AssetLocation).GetValue(getExecutableDir)
+	const name = "xray.location.asset"
+	assetPath := NewEnvFlag(name).GetValue(getExecutableDir)
 	return filepath.Join(assetPath, file)
 }

common/protocol/headers.go

@@ -30,10 +30,11 @@ func (c RequestCommand) TransferType() TransferType {
 }
 
 const (
-	// [DEPRECATED 2023-06] RequestOptionChunkStream indicates request payload is chunked. Each chunk consists of length, authentication and payload.
+	// RequestOptionChunkStream indicates request payload is chunked. Each chunk consists of length, authentication and payload.
 	RequestOptionChunkStream bitmask.Byte = 0x01
 
-	// 0x02 legacy setting
+	// RequestOptionConnectionReuse indicates client side expects to reuse the connection.
+	RequestOptionConnectionReuse bitmask.Byte = 0x02
 
 	RequestOptionChunkMasking bitmask.Byte = 0x04
 
@@ -75,6 +76,7 @@ type CommandSwitchAccount struct {
 	Port     net.Port
 	ID       uuid.UUID
 	Level    uint32
+	AlterIds uint16
 	ValidMin byte
 }
 

common/protocol/headers.pb.go

@@ -1,7 +1,7 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.31.0
+// 	protoc-gen-go v1.28.1
-// 	protoc        v4.23.1
+// 	protoc        v3.21.12
 // source: common/protocol/headers.proto
 
 package protocol
@@ -24,10 +24,11 @@ type SecurityType int32
 
 const (
 	SecurityType_UNKNOWN           SecurityType = 0
+	SecurityType_LEGACY            SecurityType = 1
 	SecurityType_AUTO              SecurityType = 2
 	SecurityType_AES128_GCM        SecurityType = 3
 	SecurityType_CHACHA20_POLY1305 SecurityType = 4
-	SecurityType_NONE              SecurityType = 5 // [DEPRECATED 2023-06]
+	SecurityType_NONE              SecurityType = 5
 	SecurityType_ZERO              SecurityType = 6
 )
 
@@ -35,6 +36,7 @@ const (
 var (
 	SecurityType_name = map[int32]string{
 		0: "UNKNOWN",
+		1: "LEGACY",
 		2: "AUTO",
 		3: "AES128_GCM",
 		4: "CHACHA20_POLY1305",
@@ -43,6 +45,7 @@ var (
 	}
 	SecurityType_value = map[string]int32{
 		"UNKNOWN":           0,
+		"LEGACY":            1,
 		"AUTO":              2,
 		"AES128_GCM":        3,
 		"CHACHA20_POLY1305": 4,
@@ -136,19 +139,20 @@ var file_common_protocol_headers_proto_rawDesc = []byte{
 	0x01, 0x20, 0x01, 0x28, 0x0e, 0x32, 0x22, 0x2e, 0x78, 0x72, 0x61, 0x79, 0x2e, 0x63, 0x6f, 0x6d,
 	0x6d, 0x6f, 0x6e, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x63, 0x6f, 0x6c, 0x2e, 0x53, 0x65, 0x63,
 	0x75, 0x72, 0x69, 0x74, 0x79, 0x54, 0x79, 0x70, 0x65, 0x52, 0x04, 0x74, 0x79, 0x70, 0x65, 0x2a,
-	0x60, 0x0a, 0x0c, 0x53, 0x65, 0x63, 0x75, 0x72, 0x69, 0x74, 0x79, 0x54, 0x79, 0x70, 0x65, 0x12,
+	0x6c, 0x0a, 0x0c, 0x53, 0x65, 0x63, 0x75, 0x72, 0x69, 0x74, 0x79, 0x54, 0x79, 0x70, 0x65, 0x12,
-	0x0b, 0x0a, 0x07, 0x55, 0x4e, 0x4b, 0x4e, 0x4f, 0x57, 0x4e, 0x10, 0x00, 0x12, 0x08, 0x0a, 0x04,
+	0x0b, 0x0a, 0x07, 0x55, 0x4e, 0x4b, 0x4e, 0x4f, 0x57, 0x4e, 0x10, 0x00, 0x12, 0x0a, 0x0a, 0x06,
-	0x41, 0x55, 0x54, 0x4f, 0x10, 0x02, 0x12, 0x0e, 0x0a, 0x0a, 0x41, 0x45, 0x53, 0x31, 0x32, 0x38,
+	0x4c, 0x45, 0x47, 0x41, 0x43, 0x59, 0x10, 0x01, 0x12, 0x08, 0x0a, 0x04, 0x41, 0x55, 0x54, 0x4f,
-	0x5f, 0x47, 0x43, 0x4d, 0x10, 0x03, 0x12, 0x15, 0x0a, 0x11, 0x43, 0x48, 0x41, 0x43, 0x48, 0x41,
+	0x10, 0x02, 0x12, 0x0e, 0x0a, 0x0a, 0x41, 0x45, 0x53, 0x31, 0x32, 0x38, 0x5f, 0x47, 0x43, 0x4d,
-	0x32, 0x30, 0x5f, 0x50, 0x4f, 0x4c, 0x59, 0x31, 0x33, 0x30, 0x35, 0x10, 0x04, 0x12, 0x08, 0x0a,
+	0x10, 0x03, 0x12, 0x15, 0x0a, 0x11, 0x43, 0x48, 0x41, 0x43, 0x48, 0x41, 0x32, 0x30, 0x5f, 0x50,
-	0x04, 0x4e, 0x4f, 0x4e, 0x45, 0x10, 0x05, 0x12, 0x08, 0x0a, 0x04, 0x5a, 0x45, 0x52, 0x4f, 0x10,
+	0x4f, 0x4c, 0x59, 0x31, 0x33, 0x30, 0x35, 0x10, 0x04, 0x12, 0x08, 0x0a, 0x04, 0x4e, 0x4f, 0x4e,
-	0x06, 0x42, 0x5e, 0x0a, 0x18, 0x63, 0x6f, 0x6d, 0x2e, 0x78, 0x72, 0x61, 0x79, 0x2e, 0x63, 0x6f,
+	0x45, 0x10, 0x05, 0x12, 0x08, 0x0a, 0x04, 0x5a, 0x45, 0x52, 0x4f, 0x10, 0x06, 0x42, 0x5e, 0x0a,
-	0x6d, 0x6d, 0x6f, 0x6e, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x63, 0x6f, 0x6c, 0x50, 0x01, 0x5a,
+	0x18, 0x63, 0x6f, 0x6d, 0x2e, 0x78, 0x72, 0x61, 0x79, 0x2e, 0x63, 0x6f, 0x6d, 0x6d, 0x6f, 0x6e,
-	0x29, 0x67, 0x69, 0x74, 0x68, 0x75, 0x62, 0x2e, 0x63, 0x6f, 0x6d, 0x2f, 0x78, 0x74, 0x6c, 0x73,
+	0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x63, 0x6f, 0x6c, 0x50, 0x01, 0x5a, 0x29, 0x67, 0x69, 0x74,
-	0x2f, 0x78, 0x72, 0x61, 0x79, 0x2d, 0x63, 0x6f, 0x72, 0x65, 0x2f, 0x63, 0x6f, 0x6d, 0x6d, 0x6f,
+	0x68, 0x75, 0x62, 0x2e, 0x63, 0x6f, 0x6d, 0x2f, 0x78, 0x74, 0x6c, 0x73, 0x2f, 0x78, 0x72, 0x61,
-	0x6e, 0x2f, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x63, 0x6f, 0x6c, 0xaa, 0x02, 0x14, 0x58, 0x72, 0x61,
+	0x79, 0x2d, 0x63, 0x6f, 0x72, 0x65, 0x2f, 0x63, 0x6f, 0x6d, 0x6d, 0x6f, 0x6e, 0x2f, 0x70, 0x72,
-	0x79, 0x2e, 0x43, 0x6f, 0x6d, 0x6d, 0x6f, 0x6e, 0x2e, 0x50, 0x72, 0x6f, 0x74, 0x6f, 0x63, 0x6f,
+	0x6f, 0x74, 0x6f, 0x63, 0x6f, 0x6c, 0xaa, 0x02, 0x14, 0x58, 0x72, 0x61, 0x79, 0x2e, 0x43, 0x6f,
-	0x6c, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
+	0x6d, 0x6d, 0x6f, 0x6e, 0x2e, 0x50, 0x72, 0x6f, 0x74, 0x6f, 0x63, 0x6f, 0x6c, 0x62, 0x06, 0x70,
+	0x72, 0x6f, 0x74, 0x6f, 0x33,
 }
 
 var (

common/protocol/headers.proto

@@ -8,10 +8,11 @@ option java_multiple_files = true;
 
 enum SecurityType {
   UNKNOWN = 0;
+  LEGACY = 1;
   AUTO = 2;
   AES128_GCM = 3;
   CHACHA20_POLY1305 = 4;
-  NONE = 5; // [DEPRECATED 2023-06] 
+  NONE = 5;
   ZERO = 6;
 }
 

common/protocol/id.go

@@ -1,7 +1,9 @@
 package protocol
 
 import (
+	"crypto/hmac"
 	"crypto/md5"
+	"hash"
 
 	"github.com/xtls/xray-core/common"
 	"github.com/xtls/xray-core/common/uuid"
@@ -11,6 +13,12 @@ const (
 	IDBytesLen = 16
 )
 
+type IDHash func(key []byte) hash.Hash
+
+func DefaultIDHash(key []byte) hash.Hash {
+	return hmac.New(md5.New, key)
+}
+
 // The ID of en entity, in the form of a UUID.
 type ID struct {
 	uuid   uuid.UUID
@@ -47,3 +55,28 @@ func NewID(uuid uuid.UUID) *ID {
 	md5hash.Sum(id.cmdKey[:0])
 	return id
 }
+
+func nextID(u *uuid.UUID) uuid.UUID {
+	md5hash := md5.New()
+	common.Must2(md5hash.Write(u.Bytes()))
+	common.Must2(md5hash.Write([]byte("16167dc8-16b6-4e6d-b8bb-65dd68113a81")))
+	var newid uuid.UUID
+	for {
+		md5hash.Sum(newid[:0])
+		if !newid.Equals(u) {
+			return newid
+		}
+		common.Must2(md5hash.Write([]byte("533eff8a-4113-4b10-b5ce-0f5d76b98cd2")))
+	}
+}
+
+func NewAlterIDs(primary *ID, alterIDCount uint16) []*ID {
+	alterIDs := make([]*ID, alterIDCount)
+	prevID := primary.UUID()
+	for idx := range alterIDs {
+		newid := nextID(&prevID)
+		alterIDs[idx] = NewID(newid)
+		prevID = newid
+	}
+	return alterIDs
+}

common/protocol/server_spec.pb.go

@@ -1,7 +1,7 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.31.0
+// 	protoc-gen-go v1.28.1
-// 	protoc        v4.23.1
+// 	protoc        v3.21.12
 // source: common/protocol/server_spec.proto
 
 package protocol

common/protocol/user.pb.go

@@ -1,7 +1,7 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.31.0
+// 	protoc-gen-go v1.28.1
-// 	protoc        v4.23.1
+// 	protoc        v3.21.12
 // source: common/protocol/user.proto
 
 package protocol

common/serial/typed_message.go

@@ -1,9 +1,10 @@
 package serial
 
 import (
-	"google.golang.org/protobuf/proto"
+	"errors"
-	"google.golang.org/protobuf/reflect/protoreflect"
+	"reflect"
-	"google.golang.org/protobuf/reflect/protoregistry"
+
+	"github.com/golang/protobuf/proto"
 )
 
 // ToTypedMessage converts a proto Message into TypedMessage.
@@ -20,17 +21,16 @@ func ToTypedMessage(message proto.Message) *TypedMessage {
 
 // GetMessageType returns the name of this proto Message.
 func GetMessageType(message proto.Message) string {
-	return string(message.ProtoReflect().Descriptor().FullName())
+	return proto.MessageName(message)
 }
 
 // GetInstance creates a new instance of the message with messageType.
 func GetInstance(messageType string) (interface{}, error) {
-	messageTypeDescriptor := protoreflect.FullName(messageType)
+	mType := proto.MessageType(messageType)
-	mType, err := protoregistry.GlobalTypes.FindMessageByName(messageTypeDescriptor)
+	if mType == nil || mType.Elem() == nil {
-	if err != nil {
+		return nil, errors.New("Serial: Unknown type: " + messageType)
-		return nil, err
 	}
-	return mType.New().Interface(), nil
+	return reflect.New(mType.Elem()).Interface(), nil
 }
 
 // GetInstance converts current TypedMessage into a proto Message.

common/serial/typed_message.pb.go

@@ -1,7 +1,7 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.31.0
+// 	protoc-gen-go v1.28.1
-// 	protoc        v4.23.1
+// 	protoc        v3.21.12
 // source: common/serial/typed_message.proto
 
 package serial

common/session/session.go

@@ -50,30 +50,15 @@ type Inbound struct {
 	Conn net.Conn
 	// Timer of the inbound buf copier. May be nil.
 	Timer *signal.ActivityTimer
-	// CanSpliceCopy is a property for this connection, set by both inbound and outbound
-	// 1 = can, 2 = after processing protocol info should be able to, 3 = cannot
-	CanSpliceCopy int
-}
-
-func(i *Inbound) SetCanSpliceCopy(canSpliceCopy int) int {
-	if canSpliceCopy > i.CanSpliceCopy {
-		i.CanSpliceCopy = canSpliceCopy
-	}
-	return i.CanSpliceCopy
 }
 
 // Outbound is the metadata of an outbound connection.
 type Outbound struct {
 	// Target address of the outbound connection.
-	OriginalTarget net.Destination
+	Target      net.Destination
-	Target         net.Destination
+	RouteTarget net.Destination
-	RouteTarget    net.Destination
 	// Gateway address
 	Gateway net.Address
-	// Name of the outbound proxy that handles the connection.
-	Name string
-	// Conn is actually internet.Connection. May be nil. It is currently nil for outbound with proxySettings 
-	Conn net.Conn
 }
 
 // SniffingRequest controls the behavior of content sniffing.

common/singbridge/destination.go

@@ -18,25 +18,19 @@ func ToNetwork(network string) net.Network {
 }
 
 func ToDestination(socksaddr M.Socksaddr, network net.Network) net.Destination {
-	// IsFqdn() implicitly checks if the domain name is valid
 	if socksaddr.IsFqdn() {
 		return net.Destination{
 			Network: network,
 			Address: net.DomainAddress(socksaddr.Fqdn),
 			Port:    net.Port(socksaddr.Port),
 		}
-	}
+	} else {
-
-	// IsIP() implicitly checks if the IP address is valid
-	if socksaddr.IsIP() {
 		return net.Destination{
 			Network: network,
 			Address: net.IPAddress(socksaddr.Addr.AsSlice()),
 			Port:    net.Port(socksaddr.Port),
 		}
 	}
-
-	return net.Destination{}
 }
 
 func ToSocksaddr(destination net.Destination) M.Socksaddr {

common/singbridge/handler.go

@@ -2,11 +2,10 @@ package singbridge
 
 import (
 	"context"
-	"io"
 
+	"github.com/sagernet/sing/common/bufio"
 	M "github.com/sagernet/sing/common/metadata"
 	N "github.com/sagernet/sing/common/network"
-	"github.com/xtls/xray-core/common/buf"
 	"github.com/xtls/xray-core/common/errors"
 	"github.com/xtls/xray-core/common/net"
 	"github.com/xtls/xray-core/common/session"
@@ -40,9 +39,10 @@ func (d *Dispatcher) NewConnection(ctx context.Context, conn net.Conn, metadata
 }
 
 func (d *Dispatcher) NewPacketConnection(ctx context.Context, conn N.PacketConn, metadata M.Metadata) error {
+	packetConn := &PacketConn{bufio.NewBindPacketConn(conn.(net.PacketConn), metadata.Destination), ToDestination(metadata.Destination, net.Network_UDP)}
 	return d.upstream.DispatchLink(ctx, ToDestination(metadata.Destination, net.Network_UDP), &transport.Link{
-		Reader: buf.NewPacketReader(conn.(io.Reader)),
+		Reader: packetConn,
-		Writer: buf.NewWriter(conn.(io.Writer)),
+		Writer: packetConn,
 	})
 }
 

common/singbridge/reader.go

@@ -14,6 +14,9 @@ var (
 	_ buf.Reader        = (*Conn)(nil)
 	_ buf.TimeoutReader = (*Conn)(nil)
 	_ buf.Writer        = (*Conn)(nil)
+	_ buf.Reader        = (*PacketConn)(nil)
+	_ buf.TimeoutReader = (*PacketConn)(nil)
+	_ buf.Writer        = (*PacketConn)(nil)
 )
 
 type Conn struct {
@@ -64,3 +67,32 @@ func (c *Conn) WriteMultiBuffer(bufferList buf.MultiBuffer) error {
 	}
 	return nil
 }
+
+type PacketConn struct {
+	net.Conn
+	destination net.Destination
+}
+
+func (c *PacketConn) ReadMultiBuffer() (buf.MultiBuffer, error) {
+	buffer, err := buf.ReadBuffer(c.Conn)
+	if err != nil {
+		return nil, err
+	}
+	buffer.UDP = &c.destination
+	return buf.MultiBuffer{buffer}, nil
+}
+
+func (c *PacketConn) ReadMultiBufferTimeout(duration time.Duration) (buf.MultiBuffer, error) {
+	err := c.SetReadDeadline(time.Now().Add(duration))
+	if err != nil {
+		return nil, err
+	}
+	defer c.SetReadDeadline(time.Time{})
+	return c.ReadMultiBuffer()
+}
+
+func (c *PacketConn) WriteMultiBuffer(mb buf.MultiBuffer) error {
+	mb, err := buf.WriteMultiBuffer(c.Conn, mb)
+	buf.ReleaseMulti(mb)
+	return err
+}

common/strmatcher/ac_automaton_matcher.go

@@ -225,11 +225,7 @@ func (ac *ACAutomaton) Match(s string) bool {
 	// 2. the match string is through a fail edge. NOT FULL MATCH
 	// 2.1 Through a fail edge, but there exists a valid node. SUBSTR
 	for i := len(s) - 1; i >= 0; i-- {
-		chr := int(s[i])
+		idx := char2Index[s[i]]
-		if chr >= len(char2Index) {
-			return false
-		}
-		idx := char2Index[chr]
 		fullMatch = fullMatch && ac.trie[node][idx].edgeType
 		node = ac.trie[node][idx].nextNode
 		switch ac.exists[node].matchType {

common/strmatcher/strmatcher_test.go

@@ -217,10 +217,6 @@ func TestACAutomaton(t *testing.T) {
 				pattern: "vvgoogle.com",
 				res:     true,
 			},
-			{
-				pattern: "½",
-				res:     false,
-			},
 		}
 		for _, test := range cases2Output {
 			if m := ac.Match(test.pattern); m != test.res {
@@ -228,6 +224,7 @@ func TestACAutomaton(t *testing.T) {
 			}
 		}
 	}
+
 	{
 		cases3Input := []struct {
 			pattern string

common/xudp/xudp.go

@@ -6,11 +6,11 @@ import (
 	"encoding/base64"
 	"fmt"
 	"io"
+	"os"
 	"strings"
 
 	"github.com/xtls/xray-core/common/buf"
 	"github.com/xtls/xray-core/common/net"
-	"github.com/xtls/xray-core/common/platform"
 	"github.com/xtls/xray-core/common/protocol"
 	"github.com/xtls/xray-core/common/session"
 	"lukechampine.com/blake3"
@@ -28,15 +28,20 @@ var (
 	BaseKey []byte
 )
 
+const (
+	EnvShow    = "XRAY_XUDP_SHOW"
+	EnvBaseKey = "XRAY_XUDP_BASEKEY"
+)
+
 func init() {
-	if strings.ToLower(platform.NewEnvFlag(platform.XUDPLog).GetValue(func() string { return "" })) == "true" {
+	if strings.ToLower(os.Getenv(EnvShow)) == "true" {
 		Show = true
 	}
-	if raw := platform.NewEnvFlag(platform.XUDPBaseKey).GetValue(func() string { return "" }); raw != "" {
+	if raw, found := os.LookupEnv(EnvBaseKey); found {
 		if BaseKey, _ = base64.RawURLEncoding.DecodeString(raw); len(BaseKey) == 32 {
 			return
 		}
-		panic(platform.XUDPBaseKey + ": invalid value: " + raw)
+		panic(EnvBaseKey + ": invalid value: " + raw)
 	}
 	rand.Read(BaseKey)
 }
@@ -51,7 +56,7 @@ func GetGlobalID(ctx context.Context) (globalID [8]byte) {
 		h.Write([]byte(inbound.Source.String()))
 		copy(globalID[:], h.Sum(nil))
 		if Show {
-			newError(fmt.Sprintf("XUDP inbound.Source.String(): %v\tglobalID: %v\n", inbound.Source.String(), globalID)).WriteToLog(session.ExportIDToError(ctx))
+			fmt.Printf("XUDP inbound.Source.String(): %v\tglobalID: %v\n", inbound.Source.String(), globalID)
 		}
 	}
 	return

core/config.go

@@ -4,11 +4,11 @@ import (
 	"io"
 	"strings"
 
+	"github.com/golang/protobuf/proto"
 	"github.com/xtls/xray-core/common"
 	"github.com/xtls/xray-core/common/buf"
 	"github.com/xtls/xray-core/common/cmdarg"
 	"github.com/xtls/xray-core/main/confloader"
-	"google.golang.org/protobuf/proto"
 )
 
 // ConfigFormat is a configurable format of Xray config file.
@@ -57,7 +57,7 @@ func GetFormatByExtension(ext string) string {
 		return "yaml"
 	case "toml":
 		return "toml"
-	case "json", "jsonc":
+	case "json":
 		return "json"
 	default:
 		return ""

core/config.pb.go

@@ -1,7 +1,7 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.31.0
+// 	protoc-gen-go v1.28.1
-// 	protoc        v4.23.1
+// 	protoc        v3.21.12
 // source: core/config.proto
 
 package core
@@ -42,7 +42,7 @@ type Config struct {
 	// Deprecated. Each inbound and outbound should choose their own transport
 	// config. Date to remove: 2020-01-13
 	//
-	// Deprecated: Marked as deprecated in core/config.proto.
+	// Deprecated: Do not use.
 	Transport *global.Config `protobuf:"bytes,5,opt,name=transport,proto3" json:"transport,omitempty"`
 	// Configuration for extensions. The config may not work if corresponding
 	// extension is not loaded into Xray. Xray will ignore such config during
@@ -103,7 +103,7 @@ func (x *Config) GetApp() []*serial.TypedMessage {
 	return nil
 }
 
-// Deprecated: Marked as deprecated in core/config.proto.
+// Deprecated: Do not use.
 func (x *Config) GetTransport() *global.Config {
 	if x != nil {
 		return x.Transport

core/core.go

@@ -21,7 +21,7 @@ import (
 var (
 	Version_x byte = 1
 	Version_y byte = 8
-	Version_z byte = 6
+	Version_z byte = 1
 )
 
 var (

core/functions_test.go

@@ -7,6 +7,7 @@ import (
 	"testing"
 	"time"
 
+	"github.com/golang/protobuf/proto"
 	"github.com/google/go-cmp/cmp"
 	"github.com/xtls/xray-core/app/dispatcher"
 	"github.com/xtls/xray-core/app/proxyman"
@@ -17,7 +18,6 @@ import (
 	"github.com/xtls/xray-core/proxy/freedom"
 	"github.com/xtls/xray-core/testing/servers/tcp"
 	"github.com/xtls/xray-core/testing/servers/udp"
-	"google.golang.org/protobuf/proto"
 )
 
 func xor(b []byte) []byte {

core/xray.go

@@ -2,11 +2,11 @@ package core
 
 import (
 	"context"
+	"os"
 	"reflect"
 	"sync"
 
 	"github.com/xtls/xray-core/common"
-	"github.com/xtls/xray-core/common/platform"
 	"github.com/xtls/xray-core/common/serial"
 	"github.com/xtls/xray-core/features"
 	"github.com/xtls/xray-core/features/dns"
@@ -181,8 +181,7 @@ func NewWithContext(ctx context.Context, config *Config) (*Instance, error) {
 }
 
 func initInstanceWithConfig(config *Config, server *Instance) (bool, error) {
-	server.ctx = context.WithValue(server.ctx, "cone", 
+	server.ctx = context.WithValue(server.ctx, "cone", os.Getenv("XRAY_CONE_DISABLED") != "true")
-		platform.NewEnvFlag(platform.UseCone).GetValue(func() string { return "" }) != "true")
 
 	if config.Transport != nil {
 		features.PrintDeprecatedFeatureWarning("global transport settings")

core/xray_test.go

@@ -3,6 +3,7 @@ package core_test
 import (
 	"testing"
 
+	"github.com/golang/protobuf/proto"
 	"github.com/xtls/xray-core/app/dispatcher"
 	"github.com/xtls/xray-core/app/proxyman"
 	"github.com/xtls/xray-core/common"
@@ -18,7 +19,6 @@ import (
 	"github.com/xtls/xray-core/proxy/vmess"
 	"github.com/xtls/xray-core/proxy/vmess/outbound"
 	"github.com/xtls/xray-core/testing/servers/tcp"
-	"google.golang.org/protobuf/proto"
 )
 
 func TestXrayDependency(t *testing.T) {

features/extension/observatory.go

@@ -3,8 +3,8 @@ package extension
 import (
 	"context"
 
+	"github.com/golang/protobuf/proto"
 	"github.com/xtls/xray-core/features"
-	"google.golang.org/protobuf/proto"
 )
 
 type Observatory interface {

features/policy/policy.go

@@ -83,8 +83,12 @@ func ManagerType() interface{} {
 var defaultBufferSize int32
 
 func init() {
+	const key = "xray.ray.buffer.size"
 	const defaultValue = -17
-	size := platform.NewEnvFlag(platform.BufferSize).GetValueAsInt(defaultValue)
+	size := platform.EnvFlag{
+		Name:    key,
+		AltName: platform.NormalizeEnvName(key),
+	}.GetValueAsInt(defaultValue)
 
 	switch size {
 	case 0:

go.mod

@@ -1,63 +1,63 @@
 module github.com/xtls/xray-core
 
-go 1.21.4
+go 1.20
 
 require (
 	github.com/ghodss/yaml v1.0.1-0.20220118164431-d8423dcdf344
 	github.com/golang/mock v1.6.0
-	github.com/google/go-cmp v0.6.0
+	github.com/golang/protobuf v1.5.3
-	github.com/gorilla/websocket v1.5.1
+	github.com/google/go-cmp v0.5.9
-	github.com/miekg/dns v1.1.57
+	github.com/gorilla/websocket v1.5.0
+	github.com/miekg/dns v1.1.53
 	github.com/pelletier/go-toml v1.9.5
 	github.com/pires/go-proxyproto v0.7.0
-	github.com/quic-go/quic-go v0.40.0
+	github.com/quic-go/quic-go v0.34.0
-	github.com/refraction-networking/utls v1.5.4
+	github.com/refraction-networking/utls v1.3.2
-	github.com/sagernet/sing v0.2.17
+	github.com/sagernet/sing v0.2.5-0.20230423085534-0902e6216207
-	github.com/sagernet/sing-shadowsocks v0.2.5
+	github.com/sagernet/sing-mux v0.0.0-20230425101127-4e8851eb1a2c
+	github.com/sagernet/sing-shadowsocks v0.2.1
+	github.com/sagernet/wireguard-go v0.0.0-20221116151939-c99467f53f2c
 	github.com/seiflotfy/cuckoofilter v0.0.0-20220411075957-e3b120b3f5fb
-	github.com/stretchr/testify v1.8.4
+	github.com/stretchr/testify v1.8.2
 	github.com/v2fly/ss-bloomring v0.0.0-20210312155135-28617310f63e
-	github.com/vishvananda/netlink v1.2.1-beta.2.0.20230316163032-ced5aaba43e3
+	github.com/xtls/reality v0.0.0-20230331223127-176a94313eda
-	github.com/xtls/reality v0.0.0-20231112171332-de1173cf2b19
+	go.starlark.net v0.0.0-20230302034142-4b1e35fe2254
-	go4.org/netipx v0.0.0-20230824141953-6213f710f925
+	golang.org/x/crypto v0.8.0
-	golang.org/x/crypto v0.15.0
+	golang.org/x/net v0.9.0
-	golang.org/x/net v0.18.0
+	golang.org/x/sync v0.1.0
-	golang.org/x/sync v0.5.0
+	golang.org/x/sys v0.7.0
-	golang.org/x/sys v0.14.0
+	google.golang.org/grpc v1.54.0
-	golang.zx2c4.com/wireguard v0.0.0-20231022001213-2e0774f246fb
+	google.golang.org/protobuf v1.30.0
-	google.golang.org/grpc v1.59.0
+	gvisor.dev/gvisor v0.0.0-20220901235040-6ca97ef2ce1c
-	google.golang.org/protobuf v1.31.0
-	gvisor.dev/gvisor v0.0.0-20231104011432-48a6d7d5bd0b
 	h12.io/socks v1.0.3
-	lukechampine.com/blake3 v1.2.1
+	lukechampine.com/blake3 v1.1.7
 )
 
 require (
-	github.com/andybalholm/brotli v1.0.6 // indirect
+	github.com/andybalholm/brotli v1.0.5 // indirect
-	github.com/cloudflare/circl v1.3.6 // indirect
 	github.com/davecgh/go-spew v1.1.1 // indirect
 	github.com/dgryski/go-metro v0.0.0-20211217172704-adc40b04c140 // indirect
 	github.com/francoispqt/gojay v1.2.13 // indirect
-	github.com/gaukas/godicttls v0.0.4 // indirect
+	github.com/gaukas/godicttls v0.0.3 // indirect
 	github.com/go-task/slim-sprig v0.0.0-20230315185526-52ccab3ef572 // indirect
-	github.com/golang/protobuf v1.5.3 // indirect
 	github.com/google/btree v1.1.2 // indirect
-	github.com/google/pprof v0.0.0-20231101202521-4ca4178f5c7a // indirect
+	github.com/google/pprof v0.0.0-20230406165453-00490a63f317 // indirect
-	github.com/klauspost/compress v1.17.2 // indirect
+	github.com/hashicorp/yamux v0.1.1 // indirect
-	github.com/klauspost/cpuid/v2 v2.2.6 // indirect
+	github.com/klauspost/compress v1.16.5 // indirect
-	github.com/onsi/ginkgo/v2 v2.13.1 // indirect
+	github.com/klauspost/cpuid/v2 v2.2.4 // indirect
+	github.com/onsi/ginkgo/v2 v2.9.2 // indirect
 	github.com/pmezard/go-difflib v1.0.0 // indirect
-	github.com/quic-go/qtls-go1-20 v0.4.1 // indirect
+	github.com/quic-go/qtls-go1-19 v0.3.2 // indirect
+	github.com/quic-go/qtls-go1-20 v0.2.2 // indirect
 	github.com/riobard/go-bloom v0.0.0-20200614022211-cdc8013cb5b3 // indirect
-	github.com/vishvananda/netns v0.0.0-20200728191858-db3c7e526aae // indirect
+	github.com/sagernet/smux v0.0.0-20230312102458-337ec2a5af37 // indirect
-	go.uber.org/mock v0.3.0 // indirect
+	go.uber.org/atomic v1.10.0 // indirect
-	golang.org/x/exp v0.0.0-20231110203233-9a3e6036ecaa // indirect
+	golang.org/x/exp v0.0.0-20230321023759-10a507213a29 // indirect
-	golang.org/x/mod v0.14.0 // indirect
+	golang.org/x/mod v0.10.0 // indirect
-	golang.org/x/text v0.14.0 // indirect
+	golang.org/x/text v0.9.0 // indirect
-	golang.org/x/time v0.4.0 // indirect
+	golang.org/x/time v0.3.0 // indirect
-	golang.org/x/tools v0.15.0 // indirect
+	golang.org/x/tools v0.8.0 // indirect
-	golang.zx2c4.com/wintun v0.0.0-20230126152724-0fa3db229ce2 // indirect
+	google.golang.org/genproto v0.0.0-20230410155749-daa745c078e1 // indirect
-	google.golang.org/genproto/googleapis/rpc v0.0.0-20231106174013-bbf56f31fb17 // indirect
 	gopkg.in/yaml.v2 v2.4.0 // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect
 )

go.sum

@@ -8,15 +8,17 @@ dmitri.shuralyov.com/service/change v0.0.0-20181023043359-a85b471d5412/go.mod h1
 dmitri.shuralyov.com/state v0.0.0-20180228185332-28bcc343414c/go.mod h1:0PRwlb0D6DFvNNtx+9ybjezNCa8XF0xaYcETyp6rHWU=
 git.apache.org/thrift.git v0.0.0-20180902110319-2566ecd5d999/go.mod h1:fPE2ZNJGynbRyZ4dJvy6G277gSllfV2HJqblrnkyeyg=
 github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
-github.com/andybalholm/brotli v1.0.6 h1:Yf9fFpf49Zrxb9NlQaluyE92/+X7UVHlhMNJN2sxfOI=
+github.com/andybalholm/brotli v1.0.5 h1:8uQZIdzKmjc/iuPu7O2ioW48L81FgatrcpfFmiq/cCs=
-github.com/andybalholm/brotli v1.0.6/go.mod h1:fO7iG3H7G2nSZ7m0zPUDn85XEX2GTukHGRSepvi9Eig=
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@@ -114,21 +131,31 @@ github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZb
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@@ -219,49 +248,49 @@ golang.org/x/sync v0.0.0-20181221193216-37e7f081c4d4/go.mod h1:RxMgew5VJxzue5/jJ
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 golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20210330210617-4fbd30eecc44/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20210510120138-977fb7262007/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
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-golang.org/x/sys v0.14.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
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 golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
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 golang.org/x/text v0.3.1-0.20180807135948-17ff2d5776d2/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
-golang.org/x/text v0.14.0 h1:ScX5w1eTa3QqT8oi6+ziP7dTV1S2+ALU0bI+0zXKWiQ=
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-golang.org/x/text v0.14.0/go.mod h1:18ZOQIKpY8NJVqYksKHtTdi31H5itFRjB5/qKTNYzSU=
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 golang.org/x/time v0.0.0-20180412165947-fbb02b2291d2/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
 golang.org/x/time v0.0.0-20181108054448-85acf8d2951c/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
-golang.org/x/time v0.4.0 h1:Z81tqI5ddIoXDPvVQ7/7CC9TnLM7ubaFG2qXYd5BbYY=
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 golang.org/x/tools v0.0.0-20180828015842-6cd1fcedba52/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
 golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
 golang.org/x/tools v0.0.0-20181030000716-a0a13e073c7b/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
 golang.org/x/tools v0.0.0-20190114222345-bf090417da8b/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
 golang.org/x/tools v0.0.0-20190226205152-f727befe758c/go.mod h1:9Yl7xja0Znq3iFh3HoIrodX9oNMXvdceNzlUR8zjMvY=
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 golang.org/x/tools v0.0.0-20191119224855-298f0cb1881e/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
 golang.org/x/tools v0.1.1/go.mod h1:o0xws9oXOQQZyjljx8fwUC0k7L1pTE6eaCbjGeHmOkk=
-golang.org/x/tools v0.15.0 h1:zdAyfUGbYmuVokhzVmghFl2ZJh5QhcfebBgmVPFYA+8=
+golang.org/x/tools v0.8.0 h1:vSDcovVPld282ceKgDimkRSC8kpaH1dgyc9UMzlt84Y=
-golang.org/x/tools v0.15.0/go.mod h1:hpksKq4dtpQWS1uQ61JkdqWM3LscIS6Slf+VVkm+wQk=
+golang.org/x/tools v0.8.0/go.mod h1:JxBZ99ISMI5ViVkT1tr6tdNmXeTrcpVSD3vZ1RsRdN4=
 golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 golang.org/x/xerrors v0.0.0-20191011141410-1b5146add898/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
-golang.zx2c4.com/wintun v0.0.0-20230126152724-0fa3db229ce2 h1:B82qJJgjvYKsXS9jeunTOisW56dUokqW/FOteYJJ/yg=
-golang.zx2c4.com/wintun v0.0.0-20230126152724-0fa3db229ce2/go.mod h1:deeaetjYA+DHMHg+sMSMI58GrEteJUUzzw7en6TJQcI=
-golang.zx2c4.com/wireguard v0.0.0-20231022001213-2e0774f246fb h1:c5tyN8sSp8jSDxdCCDXVOpJwYXXhmTkNMt+g0zTSOic=
-golang.zx2c4.com/wireguard v0.0.0-20231022001213-2e0774f246fb/go.mod h1:tkCQ4FQXmpAgYVh++1cq16/dH4QJtmvpRv19DWGAHSA=
 google.golang.org/api v0.0.0-20180910000450-7ca32eb868bf/go.mod h1:4mhQ8q/RsB7i+udVvVy5NUi08OU8ZlA0gRVgrF7VFY0=
 google.golang.org/api v0.0.0-20181030000543-1d582fd0359e/go.mod h1:4mhQ8q/RsB7i+udVvVy5NUi08OU8ZlA0gRVgrF7VFY0=
 google.golang.org/api v0.1.0/go.mod h1:UGEZY7KEX120AnNLIHFMKIo4obdJhkp2tPbaPlQx13Y=
@@ -274,21 +303,32 @@ google.golang.org/genproto v0.0.0-20180831171423-11092d34479b/go.mod h1:JiN7NxoA
 google.golang.org/genproto v0.0.0-20181029155118-b69ba1387ce2/go.mod h1:JiN7NxoALGmiZfu7CAH4rXhgtRTLTxftemlI0sWmxmc=
 google.golang.org/genproto v0.0.0-20181202183823-bd91e49a0898/go.mod h1:7Ep/1NZk928CDR8SjdVbjWNpdIf6nzjE3BTgJDr2Atg=
 google.golang.org/genproto v0.0.0-20190306203927-b5d61aea6440/go.mod h1:VzzqZJRnGkLBvHegQrXjBqPurQTc5/KpmUdxsrq26oE=
-google.golang.org/genproto/googleapis/rpc v0.0.0-20231106174013-bbf56f31fb17 h1:Jyp0Hsi0bmHXG6k9eATXoYtjd6e2UzZ1SCn/wIupY14=
+google.golang.org/genproto v0.0.0-20190819201941-24fa4b261c55/go.mod h1:DMBHOl98Agz4BDEuKkezgsaosCRResVns1a3J2ZsMNc=
-google.golang.org/genproto/googleapis/rpc v0.0.0-20231106174013-bbf56f31fb17/go.mod h1:oQ5rr10WTTMvP4A36n8JpR1OrO1BEiV4f78CneXZxkA=
+google.golang.org/genproto v0.0.0-20200526211855-cb27e3aa2013/go.mod h1:NbSheEEYHJ7i3ixzK3sjbqSGDJWnxyFXZblF3eUsNvo=
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 google.golang.org/grpc v1.14.0/go.mod h1:yo6s7OP7yaDglbqo1J04qKzAhqBH6lvTonzMVmEdcZw=
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 google.golang.org/grpc v1.17.0/go.mod h1:6QZJwpn2B+Zp71q/5VxRsJ6NXXVCE5NRUHRo+f3cWCs=
 google.golang.org/grpc v1.19.0/go.mod h1:mqu4LbDTu4XGKhr4mRzUsmM4RtVoemTSY81AxZiDr8c=
-google.golang.org/grpc v1.59.0 h1:Z5Iec2pjwb+LEOqzpB2MR12/eKFhDPhuqW91O+4bwUk=
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+google.golang.org/protobuf v1.25.0/go.mod h1:9JNX74DMeImyA3h4bdi1ymwjUzf21/xIlbajtzgsN7c=
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 google.golang.org/protobuf v1.26.0/go.mod h1:9q0QmTI4eRPtz6boOQmLYwt+qCgq0jsYwAQnmE0givc=
-google.golang.org/protobuf v1.31.0 h1:g0LDEJHgrBl9N9r17Ru3sqWhkIx2NB67okBHPwC7hs8=
+google.golang.org/protobuf v1.30.0 h1:kPPoIgf3TsEvrm0PFe15JQ+570QVxYzEvvHqChK+cng=
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+google.golang.org/protobuf v1.30.0/go.mod h1:HV8QOd/L58Z+nl8r43ehVNZIU/HEI6OcFqwMG9pJV4I=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127 h1:qIbj1fsPNlZgppZ+VLlY7N33q108Sa+fhmuc+sWQYwY=
-gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/inf.v0 v0.9.1/go.mod h1:cWUDdTG/fYaXco+Dcufb5Vnc6Gp2YChqWtbxRZE0mXw=
 gopkg.in/yaml.v2 v2.2.1/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
@@ -299,14 +339,15 @@ gopkg.in/yaml.v3 v3.0.0-20200605160147-a5ece683394c/go.mod h1:K4uyk7z7BCEPqu6E+C
 gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
 gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 grpc.go4.org v0.0.0-20170609214715-11d0a25b4919/go.mod h1:77eQGdRu53HpSqPFJFmuJdjuHRquDANNeA4x7B8WQ9o=
-gvisor.dev/gvisor v0.0.0-20231104011432-48a6d7d5bd0b h1:yqkg3pTifuKukuWanp8spDsL4irJkHF5WI0J47hU87o=
+gvisor.dev/gvisor v0.0.0-20220901235040-6ca97ef2ce1c h1:m5lcgWnL3OElQNVyp3qcncItJ2c0sQlSGjYK2+nJTA4=
-gvisor.dev/gvisor v0.0.0-20231104011432-48a6d7d5bd0b/go.mod h1:10sU+Uh5KKNv1+2x2A0Gvzt8FjD3ASIhorV3YsauXhk=
+gvisor.dev/gvisor v0.0.0-20220901235040-6ca97ef2ce1c/go.mod h1:TIvkJD0sxe8pIob3p6T8IzxXunlp6yfgktvTNp+DGNM=
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 h12.io/socks v1.0.3/go.mod h1:AIhxy1jOId/XCz9BO+EIgNL2rQiPTBNnOfnVnQ+3Eck=
 honnef.co/go/tools v0.0.0-20180728063816-88497007e858/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
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-lukechampine.com/blake3 v1.2.1 h1:YuqqRuaqsGV71BV/nm9xlI0MKUv4QC54jQnBChWbGnI=
+honnef.co/go/tools v0.0.0-20190523083050-ea95bdfd59fc/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
-lukechampine.com/blake3 v1.2.1/go.mod h1:0OFRp7fBtAylGVCO40o87sbupkyIGgbpv1+M1k1LM6k=
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+lukechampine.com/blake3 v1.1.7/go.mod h1:tkKEOtDkNtklkXtLNEOGNq5tcV90tJiA1vAA12R78LA=
 sourcegraph.com/sourcegraph/go-diff v0.5.0/go.mod h1:kuch7UrkMzY0X+p9CRK03kfuPQ2zzQcaEFbx8wA8rck=
 sourcegraph.com/sqs/pbtypes v0.0.0-20180604144634-d3ebe8f20ae4/go.mod h1:ketZ/q3QxT9HOBeFhu6RdvsftgpsbFHBF5Cas6cDKZ0=

infra/conf/blackhole.go

@@ -3,9 +3,9 @@ package conf
 import (
 	"encoding/json"
 
+	"github.com/golang/protobuf/proto"
 	"github.com/xtls/xray-core/common/serial"
 	"github.com/xtls/xray-core/proxy/blackhole"
-	"google.golang.org/protobuf/proto"
 )
 
 type NoneResponse struct{}

infra/conf/buildable.go

@@ -1,6 +1,6 @@
 package conf
 
-import "google.golang.org/protobuf/proto"
+import "github.com/golang/protobuf/proto"
 
 type Buildable interface {
 	Build() (proto.Message, error)

infra/conf/common.go

@@ -2,10 +2,10 @@ package conf
 
 import (
 	"encoding/json"
+	"os"
 	"strings"
 
 	"github.com/xtls/xray-core/common/net"
-	"github.com/xtls/xray-core/common/platform"
 	"github.com/xtls/xray-core/common/protocol"
 )
 
@@ -46,7 +46,7 @@ func (v *Address) UnmarshalJSON(data []byte) error {
 		return newError("invalid address: ", string(data)).Base(err)
 	}
 	if strings.HasPrefix(rawStr, "env:") {
-		rawStr = platform.NewEnvFlag(rawStr[4:]).GetValue(func() string { return "" })
+		rawStr = os.Getenv(rawStr[4:])
 	}
 	v.Address = net.ParseAddress(rawStr)
 
@@ -118,7 +118,7 @@ func parseIntPort(data []byte) (net.Port, error) {
 
 func parseStringPort(s string) (net.Port, net.Port, error) {
 	if strings.HasPrefix(s, "env:") {
-		s = platform.NewEnvFlag(s[4:]).GetValue(func() string { return "" })
+		s = os.Getenv(s[4:])
 	}
 
 	pair := strings.SplitN(s, "-", 2)

infra/conf/dns.go

@@ -11,13 +11,12 @@ import (
 )
 
 type NameServerConfig struct {
-	Address       *Address
+	Address      *Address
-	ClientIP      *Address
+	ClientIP     *Address
-	Port          uint16
+	Port         uint16
-	SkipFallback  bool
+	SkipFallback bool
-	Domains       []string
+	Domains      []string
-	ExpectIPs     StringList
+	ExpectIPs    StringList
-	QueryStrategy string
 }
 
 func (c *NameServerConfig) UnmarshalJSON(data []byte) error {
@@ -28,13 +27,12 @@ func (c *NameServerConfig) UnmarshalJSON(data []byte) error {
 	}
 
 	var advanced struct {
-		Address       *Address   `json:"address"`
+		Address      *Address   `json:"address"`
-		ClientIP      *Address   `json:"clientIp"`
+		ClientIP     *Address   `json:"clientIp"`
-		Port          uint16     `json:"port"`
+		Port         uint16     `json:"port"`
-		SkipFallback  bool       `json:"skipFallback"`
+		SkipFallback bool       `json:"skipFallback"`
-		Domains       []string   `json:"domains"`
+		Domains      []string   `json:"domains"`
-		ExpectIPs     StringList `json:"expectIps"`
+		ExpectIPs    StringList `json:"expectIps"`
-		QueryStrategy string     `json:"queryStrategy"`
 	}
 	if err := json.Unmarshal(data, &advanced); err == nil {
 		c.Address = advanced.Address
@@ -43,7 +41,6 @@ func (c *NameServerConfig) UnmarshalJSON(data []byte) error {
 		c.SkipFallback = advanced.SkipFallback
 		c.Domains = advanced.Domains
 		c.ExpectIPs = advanced.ExpectIPs
-		c.QueryStrategy = advanced.QueryStrategy
 		return nil
 	}
 
@@ -115,7 +112,6 @@ func (c *NameServerConfig) Build() (*dns.NameServer, error) {
 		PrioritizedDomain: domains,
 		Geoip:             geoipList,
 		OriginalRules:     originalRules,
-		QueryStrategy:     resolveQueryStrategy(c.QueryStrategy),
 	}, nil
 }
 
@@ -315,7 +311,6 @@ func (c *DNSConfig) Build() (*dns.Config, error) {
 		DisableCache:           c.DisableCache,
 		DisableFallback:        c.DisableFallback,
 		DisableFallbackIfMatch: c.DisableFallbackIfMatch,
-		QueryStrategy:          resolveQueryStrategy(c.QueryStrategy),
 	}
 
 	if c.ClientIP != nil {
@@ -325,6 +320,16 @@ func (c *DNSConfig) Build() (*dns.Config, error) {
 		config.ClientIp = []byte(c.ClientIP.IP())
 	}
 
+	config.QueryStrategy = dns.QueryStrategy_USE_IP
+	switch strings.ToLower(c.QueryStrategy) {
+	case "useip", "use_ip", "use-ip":
+		config.QueryStrategy = dns.QueryStrategy_USE_IP
+	case "useip4", "useipv4", "use_ip4", "use_ipv4", "use_ip_v4", "use-ip4", "use-ipv4", "use-ip-v4":
+		config.QueryStrategy = dns.QueryStrategy_USE_IP4
+	case "useip6", "useipv6", "use_ip6", "use_ipv6", "use_ip_v6", "use-ip6", "use-ipv6", "use-ip-v6":
+		config.QueryStrategy = dns.QueryStrategy_USE_IP6
+	}
+
 	for _, server := range c.Servers {
 		ns, err := server.Build()
 		if err != nil {
@@ -343,16 +348,3 @@ func (c *DNSConfig) Build() (*dns.Config, error) {
 
 	return config, nil
 }
-
-func resolveQueryStrategy(queryStrategy string) dns.QueryStrategy {
-	switch strings.ToLower(queryStrategy) {
-	case "useip", "use_ip", "use-ip":
-		return dns.QueryStrategy_USE_IP
-	case "useip4", "useipv4", "use_ip4", "use_ipv4", "use_ip_v4", "use-ip4", "use-ipv4", "use-ip-v4":
-		return dns.QueryStrategy_USE_IP4
-	case "useip6", "useipv6", "use_ip6", "use_ipv6", "use_ip_v6", "use-ip6", "use-ipv6", "use-ip-v6":
-		return dns.QueryStrategy_USE_IP6
-	default:
-		return dns.QueryStrategy_USE_IP
-	}
-}

infra/conf/dns_proxy.go

@@ -1,17 +1,16 @@
 package conf
 
 import (
+	"github.com/golang/protobuf/proto"
 	"github.com/xtls/xray-core/common/net"
 	"github.com/xtls/xray-core/proxy/dns"
-	"google.golang.org/protobuf/proto"
 )
 
 type DNSOutboundConfig struct {
-	Network    Network  `json:"network"`
+	Network   Network  `json:"network"`
-	Address    *Address `json:"address"`
+	Address   *Address `json:"address"`
-	Port       uint16   `json:"port"`
+	Port      uint16   `json:"port"`
-	UserLevel  uint32   `json:"userLevel"`
+	UserLevel uint32   `json:"userLevel"`
-	NonIPQuery string   `json:"nonIPQuery"`
 }
 
 func (c *DNSOutboundConfig) Build() (proto.Message, error) {
@@ -25,13 +24,5 @@ func (c *DNSOutboundConfig) Build() (proto.Message, error) {
 	if c.Address != nil {
 		config.Server.Address = c.Address.Build()
 	}
-	switch c.NonIPQuery {
-	case "":
-		c.NonIPQuery = "drop"
-	case "drop", "skip":
-	default:
-		return nil, newError(`unknown "nonIPQuery": `, c.NonIPQuery)
-	}
-	config.Non_IPQuery = c.NonIPQuery
 	return config, nil
 }

infra/conf/dns_proxy_test.go

@@ -27,7 +27,6 @@ func TestDnsProxyConfig(t *testing.T) {
 					Address: net.NewIPOrDomain(net.IPAddress([]byte{8, 8, 8, 8})),
 					Port:    53,
 				},
-				Non_IPQuery: "drop",
 			},
 		},
 	})

infra/conf/dns_test.go

@@ -6,6 +6,7 @@ import (
 	"path/filepath"
 	"testing"
 
+	"github.com/golang/protobuf/proto"
 	"github.com/xtls/xray-core/app/dns"
 	"github.com/xtls/xray-core/app/router"
 	"github.com/xtls/xray-core/common"
@@ -13,7 +14,6 @@ import (
 	"github.com/xtls/xray-core/common/platform"
 	"github.com/xtls/xray-core/common/platform/filesystem"
 	. "github.com/xtls/xray-core/infra/conf"
-	"google.golang.org/protobuf/proto"
 )
 
 func init() {

infra/conf/dokodemo.go

@@ -1,8 +1,8 @@
 package conf
 
 import (
+	"github.com/golang/protobuf/proto"
 	"github.com/xtls/xray-core/proxy/dokodemo"
-	"google.golang.org/protobuf/proto"
 )
 
 type DokodemoConfig struct {