Yggdrasil 0.5.8

Causes issues such as #1156.

.github/workflows/ci.yml

@@ -15,10 +15,10 @@ jobs:
     name: Lint
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/setup-go@v3
+      - uses: actions/setup-go@v5
         with:
           go-version: 1.21
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: golangci-lint
         uses: golangci/golangci-lint-action@v3
         with:
@@ -34,7 +34,7 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Initialize CodeQL
         uses: github/codeql-action/init@v2
@@ -51,17 +51,17 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        goversion: ["1.20", "1.21"]
+        goversion: ["1.21", "1.22"]
 
     name: Build & Test (Linux, Go ${{ matrix.goversion }})
     needs: [lint]
 
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       - name: Set up Go
-        uses: actions/setup-go@v3
+        uses: actions/setup-go@v5
         with:
           go-version: ${{ matrix.goversion }}
 
@@ -75,17 +75,17 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        goversion: ["1.20", "1.21"]
+        goversion: ["1.21", "1.22"]
 
     name: Build & Test (Windows, Go ${{ matrix.goversion }})
     needs: [lint]
 
     runs-on: windows-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       - name: Set up Go
-        uses: actions/setup-go@v3
+        uses: actions/setup-go@v5
         with:
           go-version: ${{ matrix.goversion }}
 
@@ -99,17 +99,17 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        goversion: ["1.20", "1.21"]
+        goversion: ["1.21", "1.22"]
 
     name: Build & Test (macOS, Go ${{ matrix.goversion }})
     needs: [lint]
 
     runs-on: macos-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       - name: Set up Go
-        uses: actions/setup-go@v3
+        uses: actions/setup-go@v5
         with:
           go-version: ${{ matrix.goversion }}
 
@@ -123,7 +123,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        goversion: ["1.20", "1.21"]
+        goversion: ["1.21", "1.22"]
         goos:
           - freebsd
           - openbsd
@@ -133,10 +133,10 @@ jobs:
 
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       - name: Set up Go
-        uses: actions/setup-go@v3
+        uses: actions/setup-go@v5
         with:
           go-version: ${{ matrix.goversion }}
 

.github/workflows/pkg.yml

@@ -18,14 +18,14 @@ jobs:
 
     runs-on: ubuntu-20.04
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
         with:
           fetch-depth: 0
 
       - name: Set up Go
-        uses: actions/setup-go@v3
+        uses: actions/setup-go@v5
         with:
-          go-version: "1.20"
+          go-version: "stable"
 
       - name: Build package
         env:
@@ -33,7 +33,7 @@ jobs:
         run: sh contrib/deb/generate.sh
 
       - name: Upload artifacts
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: Debian package (${{ matrix.pkgarch }})
           path: "*.deb"
@@ -49,14 +49,14 @@ jobs:
 
     runs-on: macos-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
         with:
           fetch-depth: 0
 
       - name: Set up Go
-        uses: actions/setup-go@v3
+        uses: actions/setup-go@v5
         with:
-          go-version: "1.20"
+          go-version: "stable"
 
       - name: Build package
         env:
@@ -64,7 +64,7 @@ jobs:
         run: sh contrib/macos/create-pkg.sh
 
       - name: Upload artifacts
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: macOS package (${{ matrix.pkgarch }})
           path: "*.pkg"
@@ -80,20 +80,23 @@ jobs:
 
     runs-on: windows-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
         with:
           fetch-depth: 0
 
       - name: Set up Go
-        uses: actions/setup-go@v3
+        uses: actions/setup-go@v5
         with:
-          go-version: "1.20"
+          go-version: "stable"
+
+      - name: Setup .NET Core SDK
+        uses: actions/setup-dotnet@v4
 
       - name: Build package
         run: sh contrib/msi/build-msi.sh ${{ matrix.pkgarch }}
 
       - name: Upload artifacts
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: Windows package (${{ matrix.pkgarch }})
           path: "*.msi"
@@ -109,20 +112,20 @@ jobs:
 
     runs-on: ubuntu-20.04
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
         with:
           fetch-depth: 0
           path: yggdrasil
 
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
         with:
           repository: neilalexander/vyatta-yggdrasil
           path: vyatta-yggdrasil
 
       - name: Set up Go
-        uses: actions/setup-go@v3
+        uses: actions/setup-go@v5
         with:
-          go-version: "1.20"
+          go-version: "stable"
 
       - name: Build package
         env:
@@ -130,7 +133,7 @@ jobs:
         run: cd /home/runner/work/yggdrasil-go/yggdrasil-go/vyatta-yggdrasil && ./build-${{ matrix.pkgarch }}
 
       - name: Upload artifacts
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: Router package (${{ matrix.pkgarch }})
           path: "/home/runner/work/yggdrasil-go/yggdrasil-go/vyatta-yggdrasil/*.deb"

CHANGELOG.md

@@ -26,6 +26,73 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 - in case of vulnerabilities.
 -->
 
+## [0.5.8] - 2024-08-12
+
+### Fixed
+
+* A bug which caused startup problems on Windows and FreeBSD should be fixed
+* Resolved some minor link state and listener management bugs during shutdown
+
+## [0.5.7] - 2024-08-05
+
+### Added
+
+* WebSocket support for peerings, by using the new `ws://` scheme in `Listen` and `Peers`
+  * Additionally, the `wss://` scheme can be used to connect to a WebSocket peer behind a HTTPS reverse proxy
+
+### Changed
+
+* On Linux, the TUN adapter now uses vectorised reads/writes where possible, which should reduce the amount of CPU time spent on syscalls and potentially improve throughput
+* Link error handling has been improved and various link error messages have been rewritten to be clearer
+* Upgrade dependencies
+
+### Fixed
+
+* Multiple multicast connections to the same remote machine should now work correctly
+  * You may get two connections in some cases, one inbound and one outbound, this is known and will not cause problems
+* Running as a Windows service should be more reliable with service startup and shutdown bugs fixed
+
+## [0.5.6] - 2024-05-30
+
+* Go 1.21 is now required to build Yggdrasil
+
+### Added
+
+* The `getPeers` endpoint now reports the RTT/latency of directly connected peers
+
+### Changed
+
+* The tree parent selection algorithm now prefers the lowest latency peers instead of the most stable
+* Session key exchange logic has been changed to improve throughput and reduce occasional jitter
+
+### Fixed
+
+* Bloom filter hashing now works correctly on big-endian architectures
+* Incorrect buffer pool usage has been fixed, reducing memory allocations
+* The multicast beacon interval now backs off correctly, reducing the number of beacons sent
+* A denial-of-service vulnerability in the QUIC library has been fixed with a dependency update
+
+## [0.5.5] - 2024-01-27
+
+### Added
+
+* A new peer option `?maxbackoff=X` has been added to control the maximum backoff time for a given peer, supports duration values like `5m`, `1h` etc
+
+### Changed
+
+* The maximum backoff period for failing peer connections has been reduced to just over 1 hour, compared to 4.5 hours before
+* The `getPeers` endpoint now sorts peers in a more stable fashion
+* Upgrade dependencies
+
+### Fixed
+
+* A bug where QUIC listeners could stop listening for incoming connections unexpectedly has been fixed
+* The priority tiebreak between multiple peerings to the same node has been fixed
+* Peer connection ordering is no longer sensitive to poor system time resolution
+* The admin socket now verifies the length of input public keys
+* The `PPROFLISTEN` environment variable has been fixed and now starts the pprof listener correctly
+* A panic in `getPeers` has been fixed when using abstract UNIX sockets on Linux
+
 ## [0.5.4] - 2023-11-27
 
 ### Fixed
@@ -168,7 +235,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 
 ### Changed
 
-* Go 1.17 is now required to build Yggdrasil
+* Go 1.20 is now required to build Yggdrasil
 
 ## [0.4.3] - 2022-02-06
 

README.md

@@ -24,7 +24,7 @@ or tools in the `contrib` folder.
 If you want to build from source, as opposed to installing one of the pre-built
 packages:
 
-1. Install [Go](https://golang.org) (requires Go 1.17 or later)
+1. Install [Go](https://golang.org) (requires Go 1.21 or later)
 2. Clone this repository
 2. Run `./build`
 

cmd/yggdrasil/main.go

@@ -53,13 +53,13 @@ func main() {
 	getpkey := flag.Bool("publickey", false, "use in combination with either -useconf or -useconffile, outputs your public key")
 	loglevel := flag.String("loglevel", "info", "loglevel to enable")
 	flag.Parse()
-
+	
+	done := make(chan struct{})
+	defer close(done)
+	
 	// Catch interrupts from the operating system to exit gracefully.
 	ctx, cancel := signal.NotifyContext(context.Background(), os.Interrupt, syscall.SIGTERM)
 
-	// Capture the service being stopped on Windows.
-	minwinsvc.SetOnExit(cancel)
-
 	// Create a new logger that logs output to stdout.
 	var logger *log.Logger
 	switch *logto {
@@ -188,7 +188,7 @@ func main() {
 
 	n := &node{}
 
-	// Setup the Yggdrasil node itself.
+	// Set up the Yggdrasil node itself.
 	{
 		options := []core.SetupOption{
 			core.NodeInfo(cfg.NodeInfo),
@@ -221,7 +221,7 @@ func main() {
 		logger.Printf("Your IPv6 subnet is %s", subnet.String())
 	}
 
-	// Setup the admin socket.
+	// Set up the admin socket.
 	{
 		options := []admin.SetupOption{
 			admin.ListenAddress(cfg.AdminListen),
@@ -237,7 +237,7 @@ func main() {
 		}
 	}
 
-	// Setup the multicast module.
+	// Set up the multicast module.
 	{
 		options := []multicast.SetupOption{}
 		for _, intf := range cfg.MulticastInterfaces {
@@ -258,7 +258,7 @@ func main() {
 		}
 	}
 
-	// Setup the TUN module.
+	// Set up the TUN module.
 	{
 		options := []tun.SetupOption{
 			tun.InterfaceName(cfg.IfName),
@@ -271,6 +271,14 @@ func main() {
 			n.tun.SetupAdminHandlers(n.admin)
 		}
 	}
+	
+	//Windows service shutdown
+	minwinsvc.SetOnExit(func() {
+		logger.Infof("Shutting down service ...")
+		cancel()
+		// Wait for all parts to shutdown properly
+		<-done
+	})
 
 	// Block until we are told to shut down.
 	<-ctx.Done()

cmd/yggdrasilctl/main.go

@@ -174,26 +174,29 @@ func run() int {
 		if err := json.Unmarshal(recv.Response, &resp); err != nil {
 			panic(err)
 		}
-		table.SetHeader([]string{"URI", "State", "Dir", "IP Address", "Uptime", "RX", "TX", "Pr", "Last Error"})
+		table.SetHeader([]string{"URI", "State", "Dir", "IP Address", "Uptime", "RTT", "RX", "TX", "Pr", "Last Error"})
 		for _, peer := range resp.Peers {
-			state, lasterr, dir := "Up", "-", "Out"
+			state, lasterr, dir, rtt := "Up", "-", "Out", "-"
 			if !peer.Up {
 				state, lasterr = "Down", fmt.Sprintf("%s ago: %s", peer.LastErrorTime.Round(time.Second), peer.LastError)
+			} else if rttms := float64(peer.Latency.Microseconds()) / 1000; rttms > 0 {
+				rtt = fmt.Sprintf("%.02fms", rttms)
 			}
 			if peer.Inbound {
 				dir = "In"
 			}
-			uri, err := url.Parse(peer.URI)
-			if err != nil {
-				panic(err)
+			uristring := peer.URI
+			if uri, err := url.Parse(peer.URI); err == nil {
+				uri.RawQuery = ""
+				uristring = uri.String()
 			}
-			uri.RawQuery = ""
 			table.Append([]string{
-				uri.String(),
+				uristring,
 				state,
 				dir,
 				peer.IPAddress,
 				(time.Duration(peer.Uptime) * time.Second).String(),
+				rtt,
 				peer.RXBytes.String(),
 				peer.TXBytes.String(),
 				fmt.Sprintf("%d", peer.Priority),

contrib/mobile/mobile.go

@@ -53,7 +53,7 @@ func (m *Yggdrasil) StartJSON(configjson []byte) error {
 	if err := m.config.UnmarshalHJSON(configjson); err != nil {
 		return err
 	}
-	// Setup the Yggdrasil node itself.
+	// Set up the Yggdrasil node itself.
 	{
 		options := []core.SetupOption{}
 		for _, peer := range m.config.Peers {
@@ -85,7 +85,7 @@ func (m *Yggdrasil) StartJSON(configjson []byte) error {
 		logger.Infof("Your IPv6 subnet is %s", subnet.String())
 	}
 
-	// Setup the multicast module.
+	// Set up the multicast module.
 	if len(m.config.MulticastInterfaces) > 0 {
 		var err error
 		logger.Infof("Initializing multicast %s", "")

contrib/mobile/mobile_apple.go

@@ -1,5 +1,5 @@
-//go:build ios
-// +build ios
+//go:build ios || darwin
+// +build ios darwin
 
 package mobile
 

contrib/mobile/mobile_other.go

@@ -1,5 +1,5 @@
-//go:build !android && !ios
-// +build !android,!ios
+//go:build !android && !ios && !darwin
+// +build !android,!ios,!darwin
 
 package mobile
 

contrib/msi/build-msi.sh

@@ -1,7 +1,7 @@
 #!/bin/sh
 
 # This script generates an MSI file for Yggdrasil for a given architecture. It
-# needs to run on Windows within MSYS2 and Go 1.17 or later must be installed on
+# needs to run on Windows within MSYS2 and Go 1.21 or later must be installed on
 # the system and within the PATH. This is ran currently by GitHub Actions (see
 # the workflows in the repository).
 #
@@ -16,20 +16,7 @@ then
 fi
 
 # Download the wix tools!
-if [ ! -d wixbin ];
-then
-  curl -LO https://wixtoolset.org/downloads/v3.14.0.3910/wix314-binaries.zip
-  if [ `md5sum wix314-binaries.zip | cut -f 1 -d " "` != "34f655cf108086838dd5a76d4318063b" ];
-  then
-    echo "wix package didn't match expected checksum"
-    exit 1
-  fi
-  mkdir -p wixbin
-  unzip -o wix314-binaries.zip -d wixbin || (
-    echo "failed to unzip WiX"
-    exit 1
-  )
-fi
+dotnet tool install --global wix --version 5.0.0
 
 # Build Yggdrasil!
 [ "${PKGARCH}" == "x64" ] && GOOS=windows GOARCH=amd64 CGO_ENABLED=0 ./build
@@ -61,6 +48,11 @@ PKGVERSIONMS=$(echo $PKGVERSION | tr - .)
 if [ ! -d wintun ];
 then
   curl -o wintun.zip https://www.wintun.net/builds/wintun-0.14.1.zip
+  if [ `sha256sum wintun.zip | cut -f 1 -d " "` != "07c256185d6ee3652e09fa55c0b673e2624b565e02c4b9091c79ca7d2f24ef51" ];
+  then
+    echo "wintun package didn't match expected checksum"
+    exit 1
+  fi
   unzip wintun.zip
 fi
 if [ $PKGARCH = "x64" ]; then
@@ -101,7 +93,7 @@ cat > wix.xml << EOF
       Description="Yggdrasil Network Installer"
       Comments="Yggdrasil Network standalone router for Windows."
       Manufacturer="github.com/yggdrasil-network"
-      InstallerVersion="200"
+      InstallerVersion="500"
       InstallScope="perMachine"
       Languages="1033"
       Compressed="yes"
@@ -205,5 +197,5 @@ EOF
 # Generate the MSI
 CANDLEFLAGS="-nologo"
 LIGHTFLAGS="-nologo -spdb -sice:ICE71 -sice:ICE61"
-wixbin/candle $CANDLEFLAGS -out ${PKGNAME}-${PKGVERSION}-${PKGARCH}.wixobj -arch ${PKGARCH} wix.xml && \
-wixbin/light $LIGHTFLAGS -ext WixUtilExtension.dll -out ${PKGNAME}-${PKGVERSION}-${PKGARCH}.msi ${PKGNAME}-${PKGVERSION}-${PKGARCH}.wixobj
+candle $CANDLEFLAGS -out ${PKGNAME}-${PKGVERSION}-${PKGARCH}.wixobj -arch ${PKGARCH} wix.xml && \
+light $LIGHTFLAGS -ext WixUtilExtension.dll -out ${PKGNAME}-${PKGVERSION}-${PKGARCH}.msi ${PKGNAME}-${PKGVERSION}-${PKGARCH}.wixobj

go.mod

@@ -1,39 +1,40 @@
 module github.com/yggdrasil-network/yggdrasil-go
 
-go 1.20
+go 1.21
 
 require (
-	github.com/Arceliar/ironwood v0.0.0-20231127131626-465b82dfb5bd
+	github.com/Arceliar/ironwood v0.0.0-20240529054413-b8e59574e2b2
 	github.com/Arceliar/phony v0.0.0-20220903101357-530938a4b13d
-	github.com/cheggaaa/pb/v3 v3.1.4
+	github.com/cheggaaa/pb/v3 v3.1.5
 	github.com/gologme/log v1.3.0
 	github.com/hashicorp/go-syslog v1.0.0
-	github.com/hjson/hjson-go/v4 v4.3.0
+	github.com/hjson/hjson-go/v4 v4.4.0
 	github.com/kardianos/minwinsvc v1.0.2
-	github.com/quic-go/quic-go v0.39.3
+	github.com/quic-go/quic-go v0.45.1
 	github.com/vishvananda/netlink v1.1.0
-	golang.org/x/crypto v0.14.0
-	golang.org/x/mobile v0.0.0-20231006135142-2b44d11868fe
-	golang.org/x/net v0.17.0
-	golang.org/x/sys v0.13.0
-	golang.org/x/text v0.13.0
-	golang.zx2c4.com/wireguard v0.0.0-20230223181233-21636207a675
+	golang.org/x/crypto v0.25.0
+	golang.org/x/mobile v0.0.0-20240716161057-1ad2df20a8b6
+	golang.org/x/net v0.27.0
+	golang.org/x/sys v0.22.0
+	golang.org/x/text v0.16.0
+	golang.zx2c4.com/wireguard v0.0.0-20231211153847-12269c276173
 	golang.zx2c4.com/wireguard/windows v0.5.3
+	nhooyr.io/websocket v1.8.11
 )
 
 require (
-	github.com/bits-and-blooms/bitset v1.5.0 // indirect
-	github.com/bits-and-blooms/bloom/v3 v3.3.1 // indirect
+	github.com/bits-and-blooms/bitset v1.13.0 // indirect
+	github.com/bits-and-blooms/bloom/v3 v3.7.0 // indirect
 	github.com/go-task/slim-sprig v0.0.0-20230315185526-52ccab3ef572 // indirect
 	github.com/google/pprof v0.0.0-20210407192527-94a9f03dee38 // indirect
 	github.com/mattn/go-colorable v0.1.13 // indirect
 	github.com/onsi/ginkgo/v2 v2.9.5 // indirect
-	github.com/quic-go/qtls-go1-20 v0.3.4 // indirect
 	github.com/rivo/uniseg v0.2.0 // indirect
-	go.uber.org/mock v0.3.0 // indirect
-	golang.org/x/exp v0.0.0-20221205204356-47842c84f3db // indirect
-	golang.org/x/mod v0.13.0 // indirect
-	golang.org/x/tools v0.14.0 // indirect
+	go.uber.org/mock v0.4.0 // indirect
+	golang.org/x/exp v0.0.0-20240719175910-8a7402abbf56 // indirect
+	golang.org/x/mod v0.19.0 // indirect
+	golang.org/x/sync v0.7.0 // indirect
+	golang.org/x/tools v0.23.0 // indirect
 	golang.zx2c4.com/wintun v0.0.0-20230126152724-0fa3db229ce2 // indirect
 )
 
@@ -41,7 +42,7 @@ require (
 	github.com/VividCortex/ewma v1.2.0 // indirect
 	github.com/fatih/color v1.15.0 // indirect
 	github.com/mattn/go-isatty v0.0.19 // indirect
-	github.com/mattn/go-runewidth v0.0.14 // indirect
+	github.com/mattn/go-runewidth v0.0.15 // indirect
 	github.com/olekukonko/tablewriter v0.0.5
 	github.com/vishvananda/netns v0.0.0-20210104183010-2eb08e3e575f // indirect
 )

go.sum

@@ -1,16 +1,16 @@
-github.com/Arceliar/ironwood v0.0.0-20231127131626-465b82dfb5bd h1:458tnmZ4zM2gbLtefdYbaxyAJevDNEWu6tLKEqbK4wg=
-github.com/Arceliar/ironwood v0.0.0-20231127131626-465b82dfb5bd/go.mod h1:5x7fWW0mshe9WQ1lvSMmmHBYC3BeHH9gpwW5tz7cbfw=
+github.com/Arceliar/ironwood v0.0.0-20240529054413-b8e59574e2b2 h1:SBdYBKeXYUUFef5wi2CMhYmXFVGiYaRpTvbki0Bu+JQ=
+github.com/Arceliar/ironwood v0.0.0-20240529054413-b8e59574e2b2/go.mod h1:6WP4799FX0OuWdENGQAh+0RXp9FLh0y7NZ7tM9cJyXk=
 github.com/Arceliar/phony v0.0.0-20220903101357-530938a4b13d h1:UK9fsWbWqwIQkMCz1CP+v5pGbsGoWAw6g4AyvMpm1EM=
 github.com/Arceliar/phony v0.0.0-20220903101357-530938a4b13d/go.mod h1:BCnxhRf47C/dy/e/D2pmB8NkB3dQVIrkD98b220rx5Q=
 github.com/VividCortex/ewma v1.2.0 h1:f58SaIzcDXrSy3kWaHNvuJgJ3Nmz59Zji6XoJR/q1ow=
 github.com/VividCortex/ewma v1.2.0/go.mod h1:nz4BbCtbLyFDeC9SUHbtcT5644juEuWfUAUnGx7j5l4=
-github.com/bits-and-blooms/bitset v1.3.1/go.mod h1:gIdJ4wp64HaoK2YrL1Q5/N7Y16edYb8uY+O0FJTyyDA=
-github.com/bits-and-blooms/bitset v1.5.0 h1:NpE8frKRLGHIcEzkR+gZhiioW1+WbYV6fKwD6ZIpQT8=
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@@ -20,18 +20,23 @@ github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSs
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@@ -41,19 +46,18 @@ github.com/mattn/go-isatty v0.0.16/go.mod h1:kYGgaQfpe5nmfYZH+SKPsOc2e4SrIfOl2e/
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@@ -67,32 +71,35 @@ github.com/vishvananda/netns v0.0.0-20191106174202-0a2b9b5464df/go.mod h1:JP3t17
 github.com/vishvananda/netns v0.0.0-20210104183010-2eb08e3e575f h1:p4VB7kIXpOQvVn1ZaTIVp+3vuYAXFe3OJEvjbUYJLaA=
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@@ -104,34 +111,48 @@ golang.org/x/sys v0.0.0-20220722155257-8c9f86f7a55f/go.mod h1:oPkhp1MJrh7nUepCBc
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 golang.org/x/term v0.0.0-20210927222741-03fcf44c2211/go.mod h1:jbD1KX2456YbFQfuXm/mYQcufACuNUgVhRMnK/tPxf8=
 golang.org/x/term v0.5.0/go.mod h1:jMB1sMXY+tzblOD4FWmEbocvup2/aLOaQEp7JmGp78k=
-golang.org/x/term v0.7.0/go.mod h1:P32HKFT3hSsZrRxla30E9HqToFYAQPCMs/zFMBUFqPY=
+golang.org/x/term v0.8.0/go.mod h1:xPskH00ivmX89bAKVGSKKtLOWNx2+17Eiy94tnKShWo=
+golang.org/x/term v0.17.0/go.mod h1:lLRBjIVuehSbZlaOtGMbcMncT+aqLLLmKrsjNrUguwk=
+golang.org/x/term v0.20.0/go.mod h1:8UkIAJTvZgivsXaD6/pH6U9ecQzZ45awqEOzuCvwpFY=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
 golang.org/x/text v0.3.7/go.mod h1:u+2+/6zg+i71rQMx5EYifcz6MCKuco9NR6JIITiCfzQ=
 golang.org/x/text v0.7.0/go.mod h1:mrYo+phRRbMaCq/xk9113O4dZlRixOauAjOtrjsXDZ8=
 golang.org/x/text v0.9.0/go.mod h1:e1OnstbJyHTd6l/uOt8jFFHp6TRDWZR/bV3emEE/zU8=
-golang.org/x/text v0.13.0 h1:ablQoSUd0tRdKxZewP80B+BaqeKJuVhuRxj/dkrun3k=
-golang.org/x/text v0.13.0/go.mod h1:TvPlkZtksWOMsz7fbANvkp4WM8x/WCo/om8BMLbz+aE=
+golang.org/x/text v0.14.0/go.mod h1:18ZOQIKpY8NJVqYksKHtTdi31H5itFRjB5/qKTNYzSU=
+golang.org/x/text v0.15.0/go.mod h1:18ZOQIKpY8NJVqYksKHtTdi31H5itFRjB5/qKTNYzSU=
+golang.org/x/text v0.16.0 h1:a94ExnEXNtEwYLGJSIUxnWoxoRz/ZcCsV63ROupILh4=
+golang.org/x/text v0.16.0/go.mod h1:GhwF1Be+LQoKShO3cGOHzqOgRrGaYc9AvblQOmPVHnI=
+golang.org/x/time v0.5.0 h1:o7cqy6amK/52YcAKIPlM3a+Fpj35zvRj2TP+e1xFSfk=
+golang.org/x/time v0.5.0/go.mod h1:3BpzKBy/shNhVucY/MWOyx10tF3SFh9QdLuxbVysPQM=
 golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
 golang.org/x/tools v0.0.0-20191119224855-298f0cb1881e/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
 golang.org/x/tools v0.1.12/go.mod h1:hNGJHUnrk76NpqgfD5Aqm5Crs+Hm0VOH/i9J2+nxYbc=
 golang.org/x/tools v0.6.0/go.mod h1:Xwgl3UAJ/d3gWutnCtw505GrjyAbvKui8lOU390QaIU=
-golang.org/x/tools v0.14.0 h1:jvNa2pY0M4r62jkRQ6RwEZZyPcymeL9XZMLBbV7U2nc=
-golang.org/x/tools v0.14.0/go.mod h1:uYBEerGOWcJyEORxN+Ek8+TT266gXkNlHdJBwexUsBg=
+golang.org/x/tools v0.23.0 h1:SGsXPZ+2l4JsgaCKkx+FQ9YZ5XEtA1GZYuoDjenLjvg=
+golang.org/x/tools v0.23.0/go.mod h1:pnu6ufv6vQkll6szChhK3C3L/ruaIv5eBeztNG8wtsI=
 golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/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 v0.0.0-20230223181233-21636207a675 h1:/J/RVnr7ng4fWPRH3xa4WtBJ1Jp+Auu4YNLmGiPv5QU=
-golang.zx2c4.com/wireguard v0.0.0-20230223181233-21636207a675/go.mod h1:whfbyDBt09xhCYQWtO2+3UVjlaq6/9hDZrjg2ZE6SyA=
+golang.zx2c4.com/wireguard v0.0.0-20231211153847-12269c276173 h1:/jFs0duh4rdb8uIfPMv78iAJGcPKDeqAFnaLBropIC4=
+golang.zx2c4.com/wireguard v0.0.0-20231211153847-12269c276173/go.mod h1:tkCQ4FQXmpAgYVh++1cq16/dH4QJtmvpRv19DWGAHSA=
 golang.zx2c4.com/wireguard/windows v0.5.3 h1:On6j2Rpn3OEMXqBq00QEDC7bWSZrPIHKIus8eIuExIE=
 golang.zx2c4.com/wireguard/windows v0.5.3/go.mod h1:9TEe8TJmtwyQebdFwAkEWOPr3prrtqm+REGFifP60hI=
-google.golang.org/protobuf v1.28.0 h1:w43yiav+6bVFTBQFZX0r7ipe9JQ1QsbMgHwbBziscLw=
+google.golang.org/protobuf v1.33.0 h1:uNO2rsAINq/JlFpSdYEKIZ0uKD/R9cpdv0T+yoGwGmI=
+google.golang.org/protobuf v1.33.0/go.mod h1:c6P6GXX6sHbq/GpV6MGZEdwhWPcYBgnhAHhKbcUYpos=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
+gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
+gvisor.dev/gvisor v0.0.0-20230927004350-cbd86285d259 h1:TbRPT0HtzFP3Cno1zZo7yPzEEnfu8EjLfl6IU9VfqkQ=
+gvisor.dev/gvisor v0.0.0-20230927004350-cbd86285d259/go.mod h1:AVgIgHMwK63XvmAzWG9vLQ41YnVHN0du0tEC46fI7yY=
+nhooyr.io/websocket v1.8.11 h1:f/qXNc2/3DpoSZkHt1DQu6rj4zGC8JmkkLkWss0MgN0=
+nhooyr.io/websocket v1.8.11/go.mod h1:rN9OFWIUwuxg4fR5tELlYC04bXYowCP9GX47ivo2l+c=

src/admin/addpeer.go

@@ -12,7 +12,7 @@ type AddPeerRequest struct {
 
 type AddPeerResponse struct{}
 
-func (a *AdminSocket) addPeerHandler(req *AddPeerRequest, res *AddPeerResponse) error {
+func (a *AdminSocket) addPeerHandler(req *AddPeerRequest, _ *AddPeerResponse) error {
 	u, err := url.Parse(req.Uri)
 	if err != nil {
 		return fmt.Errorf("unable to parse peering URI: %w", err)

src/admin/admin.go

@@ -201,10 +201,6 @@ func (a *AdminSocket) SetupAdminHandlers() {
 			return res, nil
 		},
 	)
-	//_ = a.AddHandler("getNodeInfo", []string{"key"}, t.proto.nodeinfo.nodeInfoAdminHandler)
-	//_ = a.AddHandler("debug_remoteGetSelf", []string{"key"}, t.proto.getSelfHandler)
-	//_ = a.AddHandler("debug_remoteGetPeers", []string{"key"}, t.proto.getPeersHandler)
-	//_ = a.AddHandler("debug_remoteGetDHT", []string{"key"}, t.proto.getDHTHandler)
 }
 
 // IsStarted returns true if the module has been started.
@@ -269,7 +265,6 @@ func (a *AdminSocket) listen() {
 		case "tcp":
 			a.listener, err = net.Listen("tcp", u.Host)
 		default:
-			// err = errors.New(fmt.Sprint("protocol not supported: ", u.Scheme))
 			a.listener, err = net.Listen("tcp", listenaddr)
 		}
 	} else {
@@ -309,23 +304,6 @@ func (a *AdminSocket) handleRequest(conn net.Conn) {
 
 	defer conn.Close()
 
-	/*
-		defer func() {
-			r := recover()
-			if r != nil {
-				fmt.Println("ERROR:", r)
-				a.log.Debugln("Admin socket error:", r)
-				if err := encoder.Encode(&ErrorResponse{
-					Error: "Check your syntax and input types",
-				}); err != nil {
-					fmt.Println("ERROR 2:", err)
-					a.log.Debugln("Admin socket JSON encode error:", err)
-				}
-				conn.Close()
-			}
-		}()
-	*/
-
 	for {
 		var err error
 		var buf json.RawMessage

src/admin/getpaths.go

@@ -23,7 +23,7 @@ type PathEntry struct {
 	Sequence  uint64   `json:"sequence"`
 }
 
-func (a *AdminSocket) getPathsHandler(req *GetPathsRequest, res *GetPathsResponse) error {
+func (a *AdminSocket) getPathsHandler(_ *GetPathsRequest, res *GetPathsResponse) error {
 	paths := a.core.GetPaths()
 	res.Paths = make([]PathEntry, 0, len(paths))
 	for _, p := range paths {

src/admin/getpeers.go

@@ -27,11 +27,12 @@ type PeerEntry struct {
 	RXBytes       DataUnit      `json:"bytes_recvd,omitempty"`
 	TXBytes       DataUnit      `json:"bytes_sent,omitempty"`
 	Uptime        float64       `json:"uptime,omitempty"`
-	LastError     string        `json:"last_error,omitempty"`
+	Latency       time.Duration `json:"latency_ms,omitempty"`
 	LastErrorTime time.Duration `json:"last_error_time,omitempty"`
+	LastError     string        `json:"last_error,omitempty"`
 }
 
-func (a *AdminSocket) getPeersHandler(req *GetPeersRequest, res *GetPeersResponse) error {
+func (a *AdminSocket) getPeersHandler(_ *GetPeersRequest, res *GetPeersResponse) error {
 	peers := a.core.GetPeers()
 	res.Peers = make([]PeerEntry, 0, len(peers))
 	for _, p := range peers {
@@ -45,6 +46,9 @@ func (a *AdminSocket) getPeersHandler(req *GetPeersRequest, res *GetPeersRespons
 			TXBytes:  DataUnit(p.TXBytes),
 			Uptime:   p.Uptime.Seconds(),
 		}
+		if p.Latency > 0 {
+			peer.Latency = p.Latency
+		}
 		if addr := address.AddrForKey(p.Key); addr != nil {
 			peer.PublicKey = hex.EncodeToString(p.Key)
 			peer.IPAddress = net.IP(addr[:]).String()
@@ -56,10 +60,16 @@ func (a *AdminSocket) getPeersHandler(req *GetPeersRequest, res *GetPeersRespons
 		res.Peers = append(res.Peers, peer)
 	}
 	sort.Slice(res.Peers, func(i, j int) bool {
-		if res.Peers[i].Port == res.Peers[j].Port {
-			return res.Peers[i].Priority < res.Peers[j].Priority
+		if res.Peers[i].Inbound == res.Peers[j].Inbound {
+			if res.Peers[i].PublicKey == res.Peers[j].PublicKey {
+				if res.Peers[i].Priority == res.Peers[j].Priority {
+					return res.Peers[i].Uptime > res.Peers[j].Uptime
+				}
+				return res.Peers[i].Priority < res.Peers[j].Priority
+			}
+			return res.Peers[i].PublicKey < res.Peers[j].PublicKey
 		}
-		return res.Peers[i].Port < res.Peers[j].Port
+		return !res.Peers[i].Inbound && res.Peers[j].Inbound
 	})
 	return nil
 }

src/admin/getself.go

@@ -17,7 +17,7 @@ type GetSelfResponse struct {
 	Subnet         string `json:"subnet"`
 }
 
-func (a *AdminSocket) getSelfHandler(req *GetSelfRequest, res *GetSelfResponse) error {
+func (a *AdminSocket) getSelfHandler(_ *GetSelfRequest, res *GetSelfResponse) error {
 	self := a.core.GetSelf()
 	snet := a.core.Subnet()
 	res.BuildName = version.BuildName()

src/admin/getsessions.go

@@ -23,7 +23,7 @@ type SessionEntry struct {
 	Uptime    float64  `json:"uptime"`
 }
 
-func (a *AdminSocket) getSessionsHandler(req *GetSessionsRequest, res *GetSessionsResponse) error {
+func (a *AdminSocket) getSessionsHandler(_ *GetSessionsRequest, res *GetSessionsResponse) error {
 	sessions := a.core.GetSessions()
 	res.Sessions = make([]SessionEntry, 0, len(sessions))
 	for _, s := range sessions {

src/admin/gettree.go

@@ -20,11 +20,9 @@ type TreeEntry struct {
 	PublicKey string `json:"key"`
 	Parent    string `json:"parent"`
 	Sequence  uint64 `json:"sequence"`
-	//Port      uint64 `json:"port"`
-	//Rest      uint64 `json:"rest"`
 }
 
-func (a *AdminSocket) getTreeHandler(req *GetTreeRequest, res *GetTreeResponse) error {
+func (a *AdminSocket) getTreeHandler(_ *GetTreeRequest, res *GetTreeResponse) error {
 	tree := a.core.GetTree()
 	res.Tree = make([]TreeEntry, 0, len(tree))
 	for _, d := range tree {
@@ -34,8 +32,6 @@ func (a *AdminSocket) getTreeHandler(req *GetTreeRequest, res *GetTreeResponse)
 			PublicKey: hex.EncodeToString(d.Key[:]),
 			Parent:    hex.EncodeToString(d.Parent[:]),
 			Sequence:  d.Sequence,
-			//Port:      d.Port,
-			//Rest:      d.Rest,
 		})
 	}
 	sort.SliceStable(res.Tree, func(i, j int) bool {

src/admin/removepeer.go

@@ -12,7 +12,7 @@ type RemovePeerRequest struct {
 
 type RemovePeerResponse struct{}
 
-func (a *AdminSocket) removePeerHandler(req *RemovePeerRequest, res *RemovePeerResponse) error {
+func (a *AdminSocket) removePeerHandler(req *RemovePeerRequest, _ *RemovePeerResponse) error {
 	u, err := url.Parse(req.Uri)
 	if err != nil {
 		return fmt.Errorf("unable to parse peering URI: %w", err)

src/config/config.go

@@ -51,9 +51,9 @@ type NodeConfig struct {
 	AllowedPublicKeys   []string                   `comment:"List of peer public keys to allow incoming peering connections\nfrom. If left empty/undefined then all connections will be allowed\nby default. This does not affect outgoing peerings, nor does it\naffect link-local peers discovered via multicast."`
 	IfName              string                     `comment:"Local network interface name for TUN adapter, or \"auto\" to select\nan interface automatically, or \"none\" to run without TUN."`
 	IfMTU               uint64                     `comment:"Maximum Transmission Unit (MTU) size for your local TUN interface.\nDefault is the largest supported size for your platform. The lowest\npossible value is 1280."`
+	LogLookups          bool                       `json:",omitempty"`
 	NodeInfoPrivacy     bool                       `comment:"By default, nodeinfo contains some defaults including the platform,\narchitecture and Yggdrasil version. These can help when surveying\nthe network and diagnosing network routing problems. Enabling\nnodeinfo privacy prevents this, so that only items specified in\n\"NodeInfo\" are sent back if specified."`
 	NodeInfo            map[string]interface{}     `comment:"Optional node info. This must be a { \"key\": \"value\", ... } map\nor set as null. This is entirely optional but, if set, is visible\nto the whole network on request."`
-	LogLookups          bool                       `json:",omitempty"`
 }
 
 type MulticastInterfaceConfig struct {

src/core/api.go

@@ -33,6 +33,7 @@ type PeerInfo struct {
 	RXBytes       uint64
 	TXBytes       uint64
 	Uptime        time.Duration
+	Latency       time.Duration
 }
 
 type TreeEntryInfo struct {
@@ -92,6 +93,7 @@ func (c *Core) GetPeers() []PeerInfo {
 				peerinfo.Root = p.Root
 				peerinfo.Port = p.Port
 				peerinfo.Priority = p.Priority
+				peerinfo.Latency = p.Latency
 			}
 			peers = append(peers, peerinfo)
 		}

src/core/core.go

@@ -212,7 +212,7 @@ func (c *Core) ReadFrom(p []byte) (n int, from net.Addr, err error) {
 
 func (c *Core) WriteTo(p []byte, addr net.Addr) (n int, err error) {
 	buf := allocBytes(0)
-	defer freeBytes(buf)
+	defer func() { freeBytes(buf) }()
 	buf = append(buf, typeSessionTraffic)
 	buf = append(buf, p...)
 	n, err = c.PacketConn.WriteTo(buf, addr)

src/core/debug.go

@@ -12,6 +12,8 @@ func init() {
 	envVarName := "PPROFLISTEN"
 	if hostPort := os.Getenv(envVarName); hostPort != "" {
 		fmt.Fprintf(os.Stderr, "DEBUG: Starting pprof on %s\n", hostPort)
-		go fmt.Println(http.ListenAndServe(hostPort, nil))
+		go func() {
+			fmt.Fprintf(os.Stderr, "DEBUG: %s", http.ListenAndServe(hostPort, nil))
+		}()
 	}
 }

src/core/link.go

@@ -4,11 +4,10 @@ import (
 	"bytes"
 	"context"
 	"encoding/hex"
+	"errors"
 	"fmt"
 	"io"
-	"math"
 	"net"
-	"net/netip"
 	"net/url"
 	"strconv"
 	"strings"
@@ -28,6 +27,9 @@ const (
 	linkTypeIncoming                   // Incoming connection
 )
 
+const defaultBackoffLimit = time.Second << 12 // 1h8m16s
+const minimumBackoffLimit = time.Second * 30
+
 type links struct {
 	phony.Inbox
 	core  *Core
@@ -36,8 +38,11 @@ type links struct {
 	unix  *linkUNIX  // UNIX interface support
 	socks *linkSOCKS // SOCKS interface support
 	quic  *linkQUIC  // QUIC interface support
+	ws    *linkWS    // WS interface support
+	wss   *linkWSS   // WSS interface support
 	// _links can only be modified safely from within the links actor
-	_links map[linkInfo]*link // *link is nil if connection in progress
+	_links     map[linkInfo]*link // *link is nil if connection in progress
+	_listeners map[*Listener]context.CancelFunc
 }
 
 type linkProtocol interface {
@@ -61,7 +66,7 @@ type link struct {
 	// The remaining fields can only be modified safely from within the links actor
 	_conn    *linkConn // Connected link, if any, nil if not connected
 	_err     error     // Last error on the connection, if any
-	_errtime time.Time // Last time an error occured
+	_errtime time.Time // Last time an error occurred
 }
 
 type linkOptions struct {
@@ -69,6 +74,7 @@ type linkOptions struct {
 	priority          uint8
 	tlsSNI            string
 	password          []byte
+	maxBackoff        time.Duration
 }
 
 type Listener struct {
@@ -81,13 +87,6 @@ func (l *Listener) Addr() net.Addr {
 	return l.listener.Addr()
 }
 
-func (l *Listener) Close() error {
-	l.Cancel()
-	err := l.listener.Close()
-	<-l.ctx.Done()
-	return err
-}
-
 func (l *links) init(c *Core) error {
 	l.core = c
 	l.tcp = l.newLinkTCP()
@@ -95,33 +94,21 @@ func (l *links) init(c *Core) error {
 	l.unix = l.newLinkUNIX()
 	l.socks = l.newLinkSOCKS()
 	l.quic = l.newLinkQUIC()
+	l.ws = l.newLinkWS()
+	l.wss = l.newLinkWSS()
 	l._links = make(map[linkInfo]*link)
-
-	var listeners []ListenAddress
-	phony.Block(c, func() {
-		listeners = make([]ListenAddress, 0, len(c.config._listeners))
-		for listener := range c.config._listeners {
-			listeners = append(listeners, listener)
-		}
-	})
+	l._listeners = make(map[*Listener]context.CancelFunc)
 
 	return nil
 }
 
 func (l *links) shutdown() {
-	phony.Block(l.tcp, func() {
-		for l := range l.tcp._listeners {
-			_ = l.Close()
+	phony.Block(l, func() {
+		for listener := range l._listeners {
+			_ = listener.listener.Close()
 		}
-	})
-	phony.Block(l.tls, func() {
-		for l := range l.tls._listeners {
-			_ = l.Close()
-		}
-	})
-	phony.Block(l.unix, func() {
-		for l := range l.unix._listeners {
-			_ = l.Close()
+		for _, link := range l._links {
+			_ = link._conn.Close()
 		}
 	})
 }
@@ -134,8 +121,9 @@ const ErrLinkAlreadyConfigured = linkError("peer is already configured")
 const ErrLinkNotConfigured = linkError("peer is not configured")
 const ErrLinkPriorityInvalid = linkError("priority value is invalid")
 const ErrLinkPinnedKeyInvalid = linkError("pinned public key is invalid")
-const ErrLinkPasswordInvalid = linkError("password is invalid")
+const ErrLinkPasswordInvalid = linkError("invalid password supplied")
 const ErrLinkUnrecognisedSchema = linkError("link schema unknown")
+const ErrLinkMaxBackoffInvalid = linkError("max backoff duration invalid")
 
 func (l *links) add(u *url.URL, sintf string, linkType linkType) error {
 	var retErr error
@@ -150,7 +138,9 @@ func (l *links) add(u *url.URL, sintf string, linkType linkType) error {
 
 		// Collect together the link options, these are global options
 		// that are not specific to any given protocol.
-		var options linkOptions
+		options := linkOptions{
+			maxBackoff: defaultBackoffLimit,
+		}
 		for _, pubkey := range u.Query()["key"] {
 			sigPub, err := hex.DecodeString(pubkey)
 			if err != nil {
@@ -179,6 +169,14 @@ func (l *links) add(u *url.URL, sintf string, linkType linkType) error {
 			}
 			options.password = []byte(p)
 		}
+		if p := u.Query().Get("maxbackoff"); p != "" {
+			d, err := time.ParseDuration(p)
+			if err != nil || d < minimumBackoffLimit {
+				retErr = ErrLinkMaxBackoffInvalid
+				return
+			}
+			options.maxBackoff = d
+		}
 		// SNI headers must contain hostnames and not IP addresses, so we must make sure
 		// that we do not populate the SNI with an IP literal. We do this by splitting
 		// the host-port combo from the query option and then seeing if it parses to an
@@ -235,10 +233,13 @@ func (l *links) add(u *url.URL, sintf string, linkType linkType) error {
 		// The caller should check the return value to decide whether
 		// or not to give up trying.
 		backoffNow := func() bool {
-			if backoff < 14 { // Cap at roughly 4.5 hours maximum.
+			if backoff < 32 {
 				backoff++
 			}
-			duration := time.Second * time.Duration(math.Exp2(float64(backoff)))
+			duration := time.Second << backoff
+			if duration > options.maxBackoff {
+				duration = options.maxBackoff
+			}
 			select {
 			case <-state.kick:
 				return true
@@ -343,9 +344,11 @@ func (l *links) add(u *url.URL, sintf string, linkType linkType) error {
 				_ = lc.Close()
 				phony.Block(l, func() {
 					state._conn = nil
-					if state._err = err; state._err != nil {
-						state._errtime = time.Now()
+					if err == nil {
+						err = fmt.Errorf("remote side closed the connection")
 					}
+					state._err = err
+					state._errtime = time.Now()
 				})
 
 				// If the link is persistently configured, back off if needed
@@ -362,7 +365,7 @@ func (l *links) add(u *url.URL, sintf string, linkType linkType) error {
 	return retErr
 }
 
-func (l *links) remove(u *url.URL, sintf string, linkType linkType) error {
+func (l *links) remove(u *url.URL, sintf string, _ linkType) error {
 	var retErr error
 	phony.Block(l, func() {
 		// Generate the link info and see whether we think we already
@@ -401,6 +404,10 @@ func (l *links) listen(u *url.URL, sintf string) (*Listener, error) {
 		protocol = l.unix
 	case "quic":
 		protocol = l.quic
+	case "ws":
+		protocol = l.ws
+	case "wss":
+		protocol = l.wss
 	default:
 		cancel()
 		return nil, ErrLinkUnrecognisedSchema
@@ -431,11 +438,18 @@ func (l *links) listen(u *url.URL, sintf string) (*Listener, error) {
 		options.password = []byte(p)
 	}
 
+	phony.Block(l, func() {
+		l._listeners[li] = cancel
+	})
+
 	go func() {
-		l.core.log.Infof("%s listener started on %s", strings.ToUpper(u.Scheme), listener.Addr())
-		defer l.core.log.Infof("%s listener stopped on %s", strings.ToUpper(u.Scheme), listener.Addr())
+		l.core.log.Infof("%s listener started on %s", strings.ToUpper(u.Scheme), li.listener.Addr())
+		defer l.core.log.Infof("%s listener stopped on %s", strings.ToUpper(u.Scheme), li.listener.Addr())
+		defer phony.Block(l, func() {
+			delete(l._listeners, li)
+		})
 		for {
-			conn, err := listener.Accept()
+			conn, err := li.listener.Accept()
 			if err != nil {
 				return
 			}
@@ -491,13 +505,22 @@ func (l *links) listen(u *url.URL, sintf string) (*Listener, error) {
 					// Store the state of the link so that it can be queried later.
 					l._links[info] = state
 				})
+				defer phony.Block(l, func() {
+					if l._links[info] == state {
+						delete(l._links, info)
+					}
+				})
 				if lc == nil {
 					return
 				}
 
 				// Give the connection to the handler. The handler will block
 				// for the lifetime of the connection.
-				if err = l.handler(linkTypeIncoming, options, lc, nil); err != nil && err != io.EOF {
+				switch err = l.handler(linkTypeIncoming, options, lc, nil); {
+				case err == nil:
+				case errors.Is(err, io.EOF):
+				case errors.Is(err, net.ErrClosed):
+				default:
 					l.core.log.Debugf("Link %s error: %s\n", u.Host, err)
 				}
 
@@ -505,11 +528,6 @@ func (l *links) listen(u *url.URL, sintf string) (*Listener, error) {
 				// try to close the underlying socket just in case and then
 				// drop the link state.
 				_ = lc.Close()
-				phony.Block(l, func() {
-					if l._links[info] == state {
-						delete(l._links, info)
-					}
-				})
 			}(conn)
 		}
 	}()
@@ -529,6 +547,10 @@ func (l *links) connect(ctx context.Context, u *url.URL, info linkInfo, options
 		dialer = l.unix
 	case "quic":
 		dialer = l.quic
+	case "ws":
+		dialer = l.ws
+	case "wss":
+		dialer = l.wss
 	default:
 		return nil, ErrLinkUnrecognisedSchema
 	}
@@ -550,7 +572,7 @@ func (l *links) handler(linkType linkType, options linkOptions, conn net.Conn, s
 	switch {
 	case err != nil:
 		return fmt.Errorf("write handshake: %w", err)
-	case err == nil && n != len(metaBytes):
+	case n != len(metaBytes):
 		return fmt.Errorf("incomplete handshake send")
 	}
 	meta = version_metadata{}
@@ -619,21 +641,11 @@ func (l *links) handler(linkType linkType, options linkOptions, conn net.Conn, s
 		l.core.log.Infof("Disconnected %s: %s, source %s; error: %s",
 			dir, remoteStr, localStr, err)
 	}
-	return nil
+	return err
 }
 
 func urlForLinkInfo(u url.URL) url.URL {
 	u.RawQuery = ""
-	if host, _, err := net.SplitHostPort(u.Host); err == nil {
-		if addr, err := netip.ParseAddr(host); err == nil {
-			// For peers that look like multicast peers (i.e.
-			// link-local addresses), we will ignore the port number,
-			// otherwise we might open multiple connections to them.
-			if addr.IsLinkLocalUnicast() {
-				u.Host = fmt.Sprintf("[%s]", addr.String())
-			}
-		}
-	}
 	return u
 }
 

src/core/link_quic.go

@@ -3,6 +3,7 @@ package core
 import (
 	"context"
 	"crypto/tls"
+	"fmt"
 	"net"
 	"net/url"
 	"time"
@@ -77,18 +78,22 @@ func (l *linkQUIC) listen(ctx context.Context, url *url.URL, _ string) (net.List
 	go func() {
 		for {
 			qc, err := ql.Accept(ctx)
-			if err != nil {
+			switch err {
+			case context.Canceled, context.DeadlineExceeded:
 				ql.Close()
+				fallthrough
+			case quic.ErrServerClosed:
 				return
-			}
-			qs, err := qc.AcceptStream(ctx)
-			if err != nil {
-				ql.Close()
-				return
-			}
-			ch <- &linkQUICStream{
-				Connection: qc,
-				Stream:     qs,
+			case nil:
+				qs, err := qc.AcceptStream(ctx)
+				if err != nil {
+					_ = qc.CloseWithError(1, fmt.Sprintf("stream error: %s", err))
+					continue
+				}
+				ch <- &linkQUICStream{
+					Connection: qc,
+					Stream:     qs,
+				}
 			}
 		}
 	}()

src/core/link_tcp.go

@@ -15,7 +15,6 @@ type linkTCP struct {
 	phony.Inbox
 	*links
 	listenconfig *net.ListenConfig
-	_listeners   map[*Listener]context.CancelFunc
 }
 
 func (l *links) newLinkTCP() *linkTCP {
@@ -24,7 +23,6 @@ func (l *links) newLinkTCP() *linkTCP {
 		listenconfig: &net.ListenConfig{
 			KeepAlive: -1,
 		},
-		_listeners: map[*Listener]context.CancelFunc{},
 	}
 	lt.listenconfig.Control = lt.tcpContext
 	return lt

src/core/link_tcp_darwin.go

@@ -28,6 +28,6 @@ func (t *linkTCP) tcpContext(network, address string, c syscall.RawConn) error {
 	}
 }
 
-func (t *linkTCP) getControl(sintf string) func(string, string, syscall.RawConn) error {
+func (t *linkTCP) getControl(_ string) func(string, string, syscall.RawConn) error {
 	return t.tcpContext
 }

src/core/link_tls.go

@@ -13,10 +13,9 @@ import (
 type linkTLS struct {
 	phony.Inbox
 	*links
-	tcp        *linkTCP
-	listener   *net.ListenConfig
-	config     *tls.Config
-	_listeners map[*Listener]context.CancelFunc
+	tcp      *linkTCP
+	listener *net.ListenConfig
+	config   *tls.Config
 }
 
 func (l *links) newLinkTLS(tcp *linkTCP) *linkTLS {
@@ -27,8 +26,7 @@ func (l *links) newLinkTLS(tcp *linkTCP) *linkTLS {
 			Control:   tcp.tcpContext,
 			KeepAlive: -1,
 		},
-		config:     l.core.config.tls.Clone(),
-		_listeners: map[*Listener]context.CancelFunc{},
+		config: l.core.config.tls.Clone(),
 	}
 	return lt
 }

src/core/link_unix.go

@@ -12,9 +12,8 @@ import (
 type linkUNIX struct {
 	phony.Inbox
 	*links
-	dialer     *net.Dialer
-	listener   *net.ListenConfig
-	_listeners map[*Listener]context.CancelFunc
+	dialer   *net.Dialer
+	listener *net.ListenConfig
 }
 
 func (l *links) newLinkUNIX() *linkUNIX {
@@ -27,7 +26,6 @@ func (l *links) newLinkUNIX() *linkUNIX {
 		listener: &net.ListenConfig{
 			KeepAlive: -1,
 		},
-		_listeners: map[*Listener]context.CancelFunc{},
 	}
 	return lt
 }

src/core/link_ws.go

@@ -0,0 +1,127 @@
+package core
+
+import (
+	"context"
+	"net"
+	"net/http"
+	"net/url"
+	"time"
+
+	"github.com/Arceliar/phony"
+	"nhooyr.io/websocket"
+)
+
+type linkWS struct {
+	phony.Inbox
+	*links
+	listenconfig *net.ListenConfig
+}
+
+type linkWSConn struct {
+	net.Conn
+}
+
+type linkWSListener struct {
+	ch         chan *linkWSConn
+	ctx        context.Context
+	httpServer *http.Server
+	listener   net.Listener
+}
+
+type wsServer struct {
+	ch  chan *linkWSConn
+	ctx context.Context
+}
+
+func (l *linkWSListener) Accept() (net.Conn, error) {
+	qs := <-l.ch
+	if qs == nil {
+		return nil, context.Canceled
+	}
+	return qs, nil
+}
+
+func (l *linkWSListener) Addr() net.Addr {
+	return l.listener.Addr()
+}
+
+func (l *linkWSListener) Close() error {
+	if err := l.httpServer.Shutdown(l.ctx); err != nil {
+		return err
+	}
+	return l.listener.Close()
+}
+
+func (s *wsServer) ServeHTTP(w http.ResponseWriter, r *http.Request) {
+	if r.URL.Path == "/health" || r.URL.Path == "/healthz" {
+		w.WriteHeader(http.StatusOK)
+		_, _ = w.Write([]byte("OK"))
+		return
+	}
+
+	c, err := websocket.Accept(w, r, &websocket.AcceptOptions{
+		Subprotocols: []string{"ygg-ws"},
+	})
+	if err != nil {
+		return
+	}
+
+	if c.Subprotocol() != "ygg-ws" {
+		c.Close(websocket.StatusPolicyViolation, "client must speak the ygg-ws subprotocol")
+		return
+	}
+
+	s.ch <- &linkWSConn{
+		Conn: websocket.NetConn(s.ctx, c, websocket.MessageBinary),
+	}
+}
+
+func (l *links) newLinkWS() *linkWS {
+	lt := &linkWS{
+		links: l,
+		listenconfig: &net.ListenConfig{
+			KeepAlive: -1,
+		},
+	}
+	return lt
+}
+
+func (l *linkWS) dial(ctx context.Context, url *url.URL, info linkInfo, options linkOptions) (net.Conn, error) {
+	wsconn, _, err := websocket.Dial(ctx, url.String(), &websocket.DialOptions{
+		Subprotocols: []string{"ygg-ws"},
+	})
+	if err != nil {
+		return nil, err
+	}
+	return &linkWSConn{
+		Conn: websocket.NetConn(ctx, wsconn, websocket.MessageBinary),
+	}, nil
+}
+
+func (l *linkWS) listen(ctx context.Context, url *url.URL, _ string) (net.Listener, error) {
+	nl, err := l.listenconfig.Listen(ctx, "tcp", url.Host)
+	if err != nil {
+		return nil, err
+	}
+
+	ch := make(chan *linkWSConn)
+
+	httpServer := &http.Server{
+		Handler: &wsServer{
+			ch:  ch,
+			ctx: ctx,
+		},
+		BaseContext:  func(_ net.Listener) context.Context { return ctx },
+		ReadTimeout:  time.Second * 10,
+		WriteTimeout: time.Second * 10,
+	}
+
+	lwl := &linkWSListener{
+		ch:         ch,
+		ctx:        ctx,
+		httpServer: httpServer,
+		listener:   nl,
+	}
+	go lwl.httpServer.Serve(nl) // nolint:errcheck
+	return lwl, nil
+}

src/core/link_wss.go

@@ -0,0 +1,43 @@
+package core
+
+import (
+	"context"
+	"fmt"
+	"net"
+	"net/url"
+
+	"github.com/Arceliar/phony"
+	"nhooyr.io/websocket"
+)
+
+type linkWSS struct {
+	phony.Inbox
+	*links
+}
+
+type linkWSSConn struct {
+	net.Conn
+}
+
+func (l *links) newLinkWSS() *linkWSS {
+	lwss := &linkWSS{
+		links: l,
+	}
+	return lwss
+}
+
+func (l *linkWSS) dial(ctx context.Context, url *url.URL, info linkInfo, options linkOptions) (net.Conn, error) {
+	wsconn, _, err := websocket.Dial(ctx, url.String(), &websocket.DialOptions{
+		Subprotocols: []string{"ygg-ws"},
+	})
+	if err != nil {
+		return nil, err
+	}
+	return &linkWSSConn{
+		Conn: websocket.NetConn(ctx, wsconn, websocket.MessageBinary),
+	}, nil
+}
+
+func (l *linkWSS) listen(ctx context.Context, url *url.URL, _ string) (net.Listener, error) {
+	return nil, fmt.Errorf("WSS listener not supported, use WS listener behind reverse proxy instead")
+}

src/core/proto.go

@@ -251,15 +251,16 @@ func (p *protoHandler) getSelfHandler(in json.RawMessage) (interface{}, error) {
 	if kbs, err = hex.DecodeString(req.Key); err != nil {
 		return nil, err
 	}
+	if len(kbs) != ed25519.PublicKeySize {
+		return nil, fmt.Errorf("invalid public key length")
+	}
 	copy(key[:], kbs)
 	ch := make(chan []byte, 1)
 	p.sendGetSelfRequest(key, func(info []byte) {
 		ch <- info
 	})
-	timer := time.NewTimer(6 * time.Second)
-	defer timer.Stop()
 	select {
-	case <-timer.C:
+	case <-time.After(6 * time.Second):
 		return nil, errors.New("timeout")
 	case info := <-ch:
 		var msg json.RawMessage
@@ -291,15 +292,16 @@ func (p *protoHandler) getPeersHandler(in json.RawMessage) (interface{}, error)
 	if kbs, err = hex.DecodeString(req.Key); err != nil {
 		return nil, err
 	}
+	if len(kbs) != ed25519.PublicKeySize {
+		return nil, fmt.Errorf("invalid public key length")
+	}
 	copy(key[:], kbs)
 	ch := make(chan []byte, 1)
 	p.sendGetPeersRequest(key, func(info []byte) {
 		ch <- info
 	})
-	timer := time.NewTimer(6 * time.Second)
-	defer timer.Stop()
 	select {
-	case <-timer.C:
+	case <-time.After(6 * time.Second):
 		return nil, errors.New("timeout")
 	case info := <-ch:
 		ks := make(map[string][]string)
@@ -341,15 +343,16 @@ func (p *protoHandler) getTreeHandler(in json.RawMessage) (interface{}, error) {
 	if kbs, err = hex.DecodeString(req.Key); err != nil {
 		return nil, err
 	}
+	if len(kbs) != ed25519.PublicKeySize {
+		return nil, fmt.Errorf("invalid public key length")
+	}
 	copy(key[:], kbs)
 	ch := make(chan []byte, 1)
 	p.sendGetTreeRequest(key, func(info []byte) {
 		ch <- info
 	})
-	timer := time.NewTimer(6 * time.Second)
-	defer timer.Stop()
 	select {
-	case <-timer.C:
+	case <-time.After(6 * time.Second):
 		return nil, errors.New("timeout")
 	case info := <-ch:
 		ks := make(map[string][]string)

src/core/version.go

@@ -8,7 +8,6 @@ import (
 	"bytes"
 	"crypto/ed25519"
 	"encoding/binary"
-	"fmt"
 	"io"
 
 	"golang.org/x/crypto/blake2b"
@@ -38,6 +37,16 @@ const (
 	metaPriority                   // uint8
 )
 
+type handshakeError string
+
+func (e handshakeError) Error() string { return string(e) }
+
+const ErrHandshakeInvalidPreamble = handshakeError("invalid handshake, remote side is not Yggdrasil")
+const ErrHandshakeInvalidLength = handshakeError("invalid handshake length, possible version mismatch")
+const ErrHandshakeInvalidPassword = handshakeError("invalid password supplied, check your config")
+const ErrHandshakeHashFailure = handshakeError("invalid hash length")
+const ErrHandshakeIncorrectPassword = handshakeError("password does not match remote side")
+
 // Gets a base metadata with no keys set, but with the correct version numbers.
 func version_getBaseMetadata() version_metadata {
 	return version_metadata{
@@ -77,7 +86,7 @@ func (m *version_metadata) encode(privateKey ed25519.PrivateKey, password []byte
 		return nil, err
 	}
 	if n != ed25519.PublicKeySize {
-		return nil, fmt.Errorf("hash writer only wrote %d bytes", n)
+		return nil, ErrHandshakeHashFailure
 	}
 	hash := hasher.Sum(nil)
 	bs = append(bs, ed25519.Sign(privateKey, hash)...)
@@ -94,11 +103,11 @@ func (m *version_metadata) decode(r io.Reader, password []byte) error {
 	}
 	meta := [4]byte{'m', 'e', 't', 'a'}
 	if !bytes.Equal(bh[:4], meta[:]) {
-		return fmt.Errorf("invalid handshake preamble")
+		return ErrHandshakeInvalidPreamble
 	}
 	hl := binary.BigEndian.Uint16(bh[4:6])
 	if hl < ed25519.SignatureSize {
-		return fmt.Errorf("invalid handshake length")
+		return ErrHandshakeInvalidLength
 	}
 	bs := make([]byte, hl)
 	if _, err := io.ReadFull(r, bs); err != nil {
@@ -132,15 +141,15 @@ func (m *version_metadata) decode(r io.Reader, password []byte) error {
 
 	hasher, err := blake2b.New512(password)
 	if err != nil {
-		return fmt.Errorf("invalid password supplied")
+		return ErrHandshakeInvalidPassword
 	}
 	n, err := hasher.Write(m.publicKey)
 	if err != nil || n != ed25519.PublicKeySize {
-		return fmt.Errorf("failed to generate hash")
+		return ErrHandshakeHashFailure
 	}
 	hash := hasher.Sum(nil)
 	if !ed25519.Verify(m.publicKey, hash, sig) {
-		return fmt.Errorf("password is incorrect")
+		return ErrHandshakeIncorrectPassword
 	}
 	return nil
 }

src/multicast/admin.go

@@ -11,7 +11,7 @@ type GetMulticastInterfacesResponse struct {
 	Interfaces []string `json:"multicast_interfaces"`
 }
 
-func (m *Multicast) getMulticastInterfacesHandler(req *GetMulticastInterfacesRequest, res *GetMulticastInterfacesResponse) error {
+func (m *Multicast) getMulticastInterfacesHandler(_ *GetMulticastInterfacesRequest, res *GetMulticastInterfacesResponse) error {
 	res.Interfaces = []string{}
 	for _, v := range m.Interfaces() {
 		res.Interfaces = append(res.Interfaces, v.Name)

src/multicast/multicast.go

@@ -9,6 +9,7 @@ import (
 	"math/rand"
 	"net"
 	"net/url"
+	"sync/atomic"
 	"time"
 
 	"github.com/Arceliar/phony"
@@ -28,7 +29,7 @@ type Multicast struct {
 	core        *core.Core
 	log         *log.Logger
 	sock        *ipv6.PacketConn
-	_isOpen     bool
+	running     atomic.Bool
 	_listeners  map[string]*listenerInfo
 	_interfaces map[string]*interfaceInfo
 	_timer      *time.Timer
@@ -79,7 +80,7 @@ func New(core *core.Core, log *log.Logger, opts ...SetupOption) (*Multicast, err
 }
 
 func (m *Multicast) _start() error {
-	if m._isOpen {
+	if !m.running.CompareAndSwap(false, true) {
 		return fmt.Errorf("multicast module is already started")
 	}
 	var anyEnabled bool
@@ -87,12 +88,14 @@ func (m *Multicast) _start() error {
 		anyEnabled = anyEnabled || intf.Beacon || intf.Listen
 	}
 	if !anyEnabled {
+		m.running.Store(false)
 		return nil
 	}
 	m.log.Debugln("Starting multicast module")
 	defer m.log.Debugln("Started multicast module")
 	addr, err := net.ResolveUDPAddr("udp", string(m.config._groupAddr))
 	if err != nil {
+		m.running.Store(false)
 		return err
 	}
 	listenString := fmt.Sprintf("[::]:%v", addr.Port)
@@ -101,6 +104,7 @@ func (m *Multicast) _start() error {
 	}
 	conn, err := lc.ListenPacket(context.Background(), "udp6", listenString)
 	if err != nil {
+		m.running.Store(false)
 		return err
 	}
 	m.sock = ipv6.NewPacketConn(conn)
@@ -108,7 +112,6 @@ func (m *Multicast) _start() error {
 		// Windows can't set this flag, so we need to handle it in other ways
 	}
 
-	m._isOpen = true
 	go m.listen()
 	m.Act(nil, m._multicastStarted)
 	m.Act(nil, m._announce)
@@ -118,11 +121,7 @@ func (m *Multicast) _start() error {
 
 // IsStarted returns true if the module has been started.
 func (m *Multicast) IsStarted() bool {
-	var isOpen bool
-	phony.Block(m, func() {
-		isOpen = m._isOpen
-	})
-	return isOpen
+	return m.running.Load()
 }
 
 // Stop stops the multicast module.
@@ -136,8 +135,10 @@ func (m *Multicast) Stop() error {
 }
 
 func (m *Multicast) _stop() error {
+	if !m.running.CompareAndSwap(true, false) {
+		return nil
+	}
 	m.log.Infoln("Stopping multicast module")
-	m._isOpen = false
 	if m.sock != nil {
 		m.sock.Close()
 	}
@@ -233,7 +234,7 @@ func (m *Multicast) AnnounceNow() {
 }
 
 func (m *Multicast) _announce() {
-	if !m._isOpen {
+	if !m.running.Load() {
 		return
 	}
 	m._updateInterfaces()
@@ -250,7 +251,7 @@ func (m *Multicast) _announce() {
 	for name, info := range m._listeners {
 		// Prepare our stop function!
 		stop := func() {
-			info.listener.Close()
+			info.listener.Cancel()
 			delete(m._listeners, name)
 			m.log.Debugln("No longer multicasting on", name)
 		}
@@ -358,6 +359,7 @@ func (m *Multicast) _announce() {
 			if linfo.interval.Seconds() < 15 {
 				linfo.interval += time.Second
 			}
+			linfo.time = time.Now()
 			break
 		}
 	}
@@ -375,6 +377,9 @@ func (m *Multicast) listen() {
 	bs := make([]byte, 2048)
 	hb := make([]byte, 0, blake2b.Size) // Reused to reduce hash allocations
 	for {
+		if !m.running.Load() {
+			return
+		}
 		n, rcm, fromAddr, err := m.sock.ReadFrom(bs)
 		if err != nil {
 			if !m.IsStarted() {

src/multicast/multicast_darwin_cgo.go

@@ -31,7 +31,7 @@ import (
 )
 
 func (m *Multicast) _multicastStarted() {
-	if !m._isOpen {
+	if !m.running.Load() {
 		return
 	}
 	C.StopAWDLBrowsing()

src/tun/iface.go

@@ -1,42 +1,60 @@
 package tun
 
-const TUN_OFFSET_BYTES = 4
+const TUN_OFFSET_BYTES = 80 // sizeof(virtio_net_hdr)
 
 func (tun *TunAdapter) read() {
-	var buf [TUN_OFFSET_BYTES + 65535]byte
+	vs := tun.iface.BatchSize()
+	bufs := make([][]byte, vs)
+	sizes := make([]int, vs)
+	for i := range bufs {
+		bufs[i] = make([]byte, TUN_OFFSET_BYTES+65535)
+	}
 	for {
-		n, err := tun.iface.Read(buf[:], TUN_OFFSET_BYTES)
-		if n <= TUN_OFFSET_BYTES || err != nil {
+		n, err := tun.iface.Read(bufs, sizes, TUN_OFFSET_BYTES)
+		if err != nil {
 			tun.log.Errorln("Error reading TUN:", err)
-			ferr := tun.iface.Flush()
-			if ferr != nil {
-				tun.log.Errorln("Unable to flush packets:", ferr)
-			}
 			return
 		}
-		begin := TUN_OFFSET_BYTES
-		end := begin + n
-		bs := buf[begin:end]
-		if _, err := tun.rwc.Write(bs); err != nil {
-			tun.log.Debugln("Unable to send packet:", err)
+		for i, b := range bufs[:n] {
+			if _, err := tun.rwc.Write(b[TUN_OFFSET_BYTES : TUN_OFFSET_BYTES+sizes[i]]); err != nil {
+				tun.log.Debugln("Unable to send packet:", err)
+			}
 		}
 	}
 }
 
-func (tun *TunAdapter) write() {
-	var buf [TUN_OFFSET_BYTES + 65535]byte
+func (tun *TunAdapter) queue() {
 	for {
-		bs := buf[TUN_OFFSET_BYTES:]
-		n, err := tun.rwc.Read(bs)
+		p := bufPool.Get().([]byte)[:bufPoolSize]
+		n, err := tun.rwc.Read(p)
 		if err != nil {
 			tun.log.Errorln("Exiting TUN writer due to core read error:", err)
 			return
 		}
+		tun.ch <- p[:n]
+	}
+}
+
+func (tun *TunAdapter) write() {
+	vs := cap(tun.ch)
+	bufs := make([][]byte, vs)
+	for i := range bufs {
+		bufs[i] = make([]byte, TUN_OFFSET_BYTES+65535)
+	}
+	for {
+		n := len(tun.ch)
+		if n == 0 {
+			n = 1 // Nothing queued up yet, wait for it instead
+		}
+		for i := 0; i < n; i++ {
+			msg := <-tun.ch
+			bufs[i] = append(bufs[i][:TUN_OFFSET_BYTES], msg...)
+			bufPool.Put(msg) // nolint:staticcheck
+		}
 		if !tun.isEnabled {
 			continue // Nothing to do, the tun isn't enabled
 		}
-		bs = buf[:TUN_OFFSET_BYTES+n]
-		if _, err = tun.iface.Write(bs, TUN_OFFSET_BYTES); err != nil {
+		if _, err := tun.iface.Write(bufs[:n], TUN_OFFSET_BYTES); err != nil {
 			tun.Act(nil, func() {
 				if !tun.isOpen {
 					tun.log.Errorln("TUN iface write error:", err)

src/tun/tun.go

@@ -10,9 +10,10 @@ import (
 	"fmt"
 	"io"
 	"net"
+	"sync"
 
 	"github.com/Arceliar/phony"
-	"golang.zx2c4.com/wireguard/tun"
+	wgtun "golang.zx2c4.com/wireguard/tun"
 
 	"github.com/yggdrasil-network/yggdrasil-go/src/address"
 	"github.com/yggdrasil-network/yggdrasil-go/src/config"
@@ -39,7 +40,7 @@ type TunAdapter struct {
 	addr        address.Address
 	subnet      address.Subnet
 	mtu         uint64
-	iface       tun.Device
+	iface       wgtun.Device
 	phony.Inbox // Currently only used for _handlePacket from the reader, TODO: all the stuff that currently needs a mutex below
 	isOpen      bool
 	isEnabled   bool // Used by the writer to drop sessionTraffic if not enabled
@@ -48,6 +49,7 @@ type TunAdapter struct {
 		name InterfaceName
 		mtu  InterfaceMTU
 	}
+	ch chan []byte
 }
 
 // Gets the maximum supported MTU for the platform based on the defaults in
@@ -145,6 +147,8 @@ func (tun *TunAdapter) _start() error {
 	tun.rwc.SetMTU(tun.MTU())
 	tun.isOpen = true
 	tun.isEnabled = true
+	tun.ch = make(chan []byte, tun.iface.BatchSize())
+	go tun.queue()
 	go tun.read()
 	go tun.write()
 	return nil
@@ -178,3 +182,12 @@ func (tun *TunAdapter) _stop() error {
 	}
 	return nil
 }
+
+const bufPoolSize = TUN_OFFSET_BYTES + 65535
+
+var bufPool = sync.Pool{
+	New: func() any {
+		b := [bufPoolSize]byte{}
+		return b[:]
+	},
+}

src/tun/tun_windows.go

@@ -8,10 +8,12 @@ import (
 	"fmt"
 	"log"
 	"net/netip"
+	"time"
 
 	"github.com/yggdrasil-network/yggdrasil-go/src/config"
 	"golang.org/x/sys/windows"
 
+	"golang.zx2c4.com/wintun"
 	wgtun "golang.zx2c4.com/wireguard/tun"
 	"golang.zx2c4.com/wireguard/windows/elevate"
 	"golang.zx2c4.com/wireguard/windows/tunnel/winipcfg"
@@ -31,11 +33,23 @@ func (tun *TunAdapter) setup(ifname string, addr string, mtu uint64) error {
 		if guid, err = windows.GUIDFromString("{8f59971a-7872-4aa6-b2eb-061fc4e9d0a7}"); err != nil {
 			return err
 		}
-		if iface, err = wgtun.CreateTUNWithRequestedGUID(ifname, &guid, int(mtu)); err != nil {
-			return err
+		iface, err = wgtun.CreateTUNWithRequestedGUID(ifname, &guid, int(mtu))
+		if err != nil {
+			// Very rare condition, it will purge the old device and create new
+			tun.log.Printf("Error creating TUN: '%s'", err)
+			wintun.Uninstall()
+			time.Sleep(3 * time.Second)
+			tun.log.Printf("Trying again")
+			iface, err = wgtun.CreateTUNWithRequestedGUID(ifname, &guid, int(mtu))
+			if err != nil {
+				return err
+			}
 		}
+		tun.log.Printf("Waiting for TUN to come up")
+		time.Sleep(1 * time.Second)
 		tun.iface = iface
 		if addr != "" {
+			tun.log.Printf("Setting up address")
 			if err = tun.setupAddress(addr); err != nil {
 				tun.log.Errorln("Failed to set up TUN address:", err)
 				return err
@@ -48,6 +62,7 @@ func (tun *TunAdapter) setup(ifname string, addr string, mtu uint64) error {
 		if mtu, err := iface.MTU(); err == nil {
 			tun.mtu = uint64(mtu)
 		}
+		tun.log.Printf("TUN is set up successfully")
 		return nil
 	})
 }