Merge pull request #1 from yggdrasil-network/develop

Branch Develop: Base to Fork

.circleci/config.yml

@@ -7,8 +7,6 @@ jobs:
     docker:
       - image: circleci/golang:1.11
 
-    working_directory: /go/src/github.com/{{ORG_NAME}}/{{REPO_NAME}}
-
     steps:
       - checkout
 
@@ -17,7 +15,9 @@ jobs:
           command: |
               mkdir /tmp/upload
               echo 'export CINAME=$(sh contrib/semver/name.sh)' >> $BASH_ENV
-              echo 'export CIVERSION=$(sh contrib/semver/version.sh | cut -c 2-)' >> $BASH_ENV
+              echo 'export CIVERSION=$(sh contrib/semver/version.sh --bare)' >> $BASH_ENV
+              git config --global user.email "$(git log --format='%ae' HEAD -1)";
+              git config --global user.name "$(git log --format='%an' HEAD -1)";
 
       - run:
           name: Install alien
@@ -98,3 +98,13 @@ jobs:
       - store_artifacts:
           path: /tmp/upload
           destination: /
+
+      - run:
+          name: Create tags (master branch only)
+          command: >
+              if [ "${CIRCLE_BRANCH}" == "master" ]; then
+                git tag -f -a $(sh contrib/semver/version.sh) -m "Created by CircleCI" && git push -f --tags;
+              else
+                echo "Only runs for master branch (this is ${CIRCLE_BRANCH})";
+              fi;
+          when: on_success

CHANGELOG.md

@@ -25,6 +25,33 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 - in case of vulnerabilities.
 -->
 
+## [0.3.0] - 2018-12-12
+### Added
+- Crypto-key routing support for tunnelling both IPv4 and IPv6 over Yggdrasil
+- Add advanced `SwitchOptions` in configuration file for tuning the switch
+- Add `dhtPing` to the admin socket to aid in crawling the network
+- New macOS .pkgs built automatically by CircleCI
+- Add Dockerfile to repository for Docker support
+- Add `-json` command line flag for generating and normalising configuration in plain JSON instead of HJSON
+- Build name and version numbers are now imprinted onto the build, accessible through `yggdrasil -version` and `yggdrasilctl getSelf`
+- Add ability to disable admin socket by setting `AdminListen` to `"none"`
+- `yggdrasilctl` now tries to look for the default configuration file to find `AdminListen` if `-endpoint` is not specified
+- `yggdrasilctl` now returns more useful logging in the event of a fatal error
+
+### Changed
+- Switched to Chord DHT (instead of Kademlia, although still compatible at the protocol level)
+- The `AdminListen` option and `yggdrasilctl` now default to `unix:///var/run/yggdrasil.sock` on BSDs, macOS and Linux
+- Cleaned up some of the parameter naming in the admin socket
+- Latency-based parent selection for the switch instead of uptime-based (should help to avoid high latency links somewhat)
+- Real peering endpoints now shown in the admin socket `getPeers` call to help identify peerings
+- Reuse the multicast port on supported platforms so that multiple Yggdrasil processes can run
+- `yggdrasilctl` now has more useful help text (with `-help` or when no arguments passed)
+
+### Fixed
+- Memory leaks in the DHT fixed
+- Crash fixed where the ICMPv6 NDP goroutine would incorrectly start in TUN mode
+- Removing peers from the switch table if they stop sending switch messages but keep the TCP connection alive
+
 ## [0.2.7] - 2018-10-13
 ### Added
 - Session firewall, which makes it possible to control who can open sessions with your node

README.md

@@ -15,7 +15,7 @@ You're encouraged to play with it, but it is strongly advised not to use it for
 
 ## Building
 
-1. Install Go (tested on 1.9+, [godeb](https://github.com/niemeyer/godeb) is recommended for debian-based linux distributions).
+1. Install Go (requires 1.11 or later, [godeb](https://github.com/niemeyer/godeb) is recommended for Debian-based Linux distributions).
 2. Clone this repository.
 2. `./build`
 

VERSION

@@ -1 +0,0 @@
-0.2

build

@@ -1,25 +1,36 @@
 #!/bin/sh
-while getopts ud option
+
+PKGSRC=${PKGSRC:-github.com/yggdrasil-network/yggdrasil-go/src/yggdrasil}
+PKGNAME=${PKGNAME:-$(sh contrib/semver/name.sh)}
+PKGVER=${PKGVER:-$(sh contrib/semver/version.sh --bare)}
+
+LDFLAGS="-X $PKGSRC.buildName=$PKGNAME -X $PKGSRC.buildVersion=$PKGVER"
+
+while getopts "udtc:l:" option
 do
   case "${option}"
   in
   u) UPX=true;;
   d) DEBUG=true;;
+  t) TABLES=true;;
+  c) GCFLAGS="$GCFLAGS $OPTARG";;
+  l) LDFLAGS="$LDFLAGS $OPTARG";;
   esac
 done
-export GOPATH=$PWD
-echo "Downloading..."
-go get -d -v
-go get -d -v yggdrasil
-for file in *.go ; do
-  echo "Building: $file"
-  #go build $@ $file
+
+if [ -z $TABLES ]; then
+  STRIP="-s -w"
+fi
+
+for CMD in `ls cmd/` ; do
+  echo "Building: $CMD"
+
   if [ $DEBUG ]; then
-    go build -tags debug -v $file
+    go build -ldflags="$LDFLAGS" -gcflags="$GCFLAGS" -tags debug -v ./cmd/$CMD
   else
-    go build -ldflags="-s -w" -v $file
+    go build -ldflags="$LDFLAGS $STRIP" -gcflags="$GCFLAGS" -v ./cmd/$CMD
   fi
   if [ $UPX ]; then
-    upx --brute ${file%.go}
+    upx --brute $CMD
   fi
 done

cmd/yggdrasil/main.go

@@ -21,9 +21,9 @@ import (
 	"github.com/mitchellh/mapstructure"
 	"github.com/neilalexander/hjson-go"
 
-	"yggdrasil"
-	"yggdrasil/config"
-	"yggdrasil/defaults"
+	"github.com/yggdrasil-network/yggdrasil-go/src/config"
+	"github.com/yggdrasil-network/yggdrasil-go/src/defaults"
+	"github.com/yggdrasil-network/yggdrasil-go/src/yggdrasil"
 )
 
 type nodeConfig = config.NodeConfig
@@ -100,10 +100,15 @@ func main() {
 	normaliseconf := flag.Bool("normaliseconf", false, "use in combination with either -useconf or -useconffile, outputs your configuration normalised")
 	confjson := flag.Bool("json", false, "print configuration from -genconf or -normaliseconf as JSON instead of HJSON")
 	autoconf := flag.Bool("autoconf", false, "automatic mode (dynamic IP, peer with IPv6 neighbors)")
+	version := flag.Bool("version", false, "prints the version of this build")
 	flag.Parse()
 
 	var cfg *nodeConfig
 	switch {
+	case *version:
+		fmt.Println("Build name:", yggdrasil.GetBuildName())
+		fmt.Println("Build version:", yggdrasil.GetBuildVersion())
+		os.Exit(0)
 	case *autoconf:
 		// Use an autoconf-generated config, this will give us random keys and
 		// port numbers, and will use an automatically selected TUN/TAP interface.

cmd/yggdrasilctl/main.go

@@ -1,53 +1,117 @@
 package main
 
-import "errors"
-import "flag"
-import "fmt"
-import "strings"
-import "net"
-import "net/url"
-import "sort"
-import "encoding/json"
-import "strconv"
-import "os"
+import (
+	"bytes"
+	"encoding/json"
+	"errors"
+	"flag"
+	"fmt"
+	"io/ioutil"
+	"log"
+	"net"
+	"net/url"
+	"os"
+	"sort"
+	"strconv"
+	"strings"
 
-import "yggdrasil/defaults"
+	"golang.org/x/text/encoding/unicode"
+
+	"github.com/neilalexander/hjson-go"
+	"github.com/yggdrasil-network/yggdrasil-go/src/defaults"
+)
 
 type admin_info map[string]interface{}
 
 func main() {
-	server := flag.String("endpoint", defaults.GetDefaults().DefaultAdminListen, "Admin socket endpoint")
-	injson := flag.Bool("json", false, "Output in JSON format")
+	logbuffer := &bytes.Buffer{}
+	logger := log.New(logbuffer, "", log.Flags())
+	defer func() {
+		if r := recover(); r != nil {
+			logger.Println("Fatal error:", r)
+			fmt.Print(logbuffer)
+			os.Exit(1)
+		}
+	}()
+
+	endpoint := defaults.GetDefaults().DefaultAdminListen
+
+	flag.Usage = func() {
+		fmt.Fprintf(flag.CommandLine.Output(), "Usage: %s [options] command [key=value] [key=value] ...\n", os.Args[0])
+		fmt.Println("Options:")
+		flag.PrintDefaults()
+		fmt.Println("Commands:\n  - Use \"list\" for a list of available commands")
+		fmt.Println("Examples:")
+		fmt.Println("  - ", os.Args[0], "list")
+		fmt.Println("  - ", os.Args[0], "getPeers")
+		fmt.Println("  - ", os.Args[0], "setTunTap name=auto mtu=1500 tap_mode=false")
+		fmt.Println("  - ", os.Args[0], "-endpoint=tcp://localhost:9001 getDHT")
+		fmt.Println("  - ", os.Args[0], "-endpoint=unix:///var/run/ygg.sock getDHT")
+	}
+	server := flag.String("endpoint", endpoint, "Admin socket endpoint")
+	injson := flag.Bool("json", false, "Output in JSON format (as opposed to pretty-print)")
 	verbose := flag.Bool("v", false, "Verbose output (includes public keys)")
 	flag.Parse()
 	args := flag.Args()
 
 	if len(args) == 0 {
-		fmt.Println("usage:", os.Args[0], "[-endpoint=proto://server] [-v] [-json] command [key=value] [...]")
-		fmt.Println("example:", os.Args[0], "getPeers")
-		fmt.Println("example:", os.Args[0], "setTunTap name=auto mtu=1500 tap_mode=false")
-		fmt.Println("example:", os.Args[0], "-endpoint=tcp://localhost:9001 getDHT")
-		fmt.Println("example:", os.Args[0], "-endpoint=unix:///var/run/ygg.sock getDHT")
+		flag.Usage()
 		return
 	}
 
+	if *server == endpoint {
+		if config, err := ioutil.ReadFile(defaults.GetDefaults().DefaultConfigFile); err == nil {
+			if bytes.Compare(config[0:2], []byte{0xFF, 0xFE}) == 0 ||
+				bytes.Compare(config[0:2], []byte{0xFE, 0xFF}) == 0 {
+				utf := unicode.UTF16(unicode.BigEndian, unicode.UseBOM)
+				decoder := utf.NewDecoder()
+				config, err = decoder.Bytes(config)
+				if err != nil {
+					panic(err)
+				}
+			}
+			var dat map[string]interface{}
+			if err := hjson.Unmarshal(config, &dat); err != nil {
+				panic(err)
+			}
+			if ep, ok := dat["AdminListen"].(string); ok && (ep != "none" && ep != "") {
+				endpoint = ep
+				logger.Println("Found platform default config file", defaults.GetDefaults().DefaultConfigFile)
+				logger.Println("Using endpoint", endpoint, "from AdminListen")
+			} else {
+				logger.Println("Configuration file doesn't contain appropriate AdminListen option")
+				logger.Println("Falling back to platform default", defaults.GetDefaults().DefaultAdminListen)
+			}
+		} else {
+			logger.Println("Can't open config file from default location", defaults.GetDefaults().DefaultConfigFile)
+			logger.Println("Falling back to platform default", defaults.GetDefaults().DefaultAdminListen)
+		}
+	} else {
+		logger.Println("Using endpoint", endpoint, "from command line")
+	}
+
 	var conn net.Conn
-	u, err := url.Parse(*server)
+	u, err := url.Parse(endpoint)
 	if err == nil {
 		switch strings.ToLower(u.Scheme) {
 		case "unix":
-			conn, err = net.Dial("unix", (*server)[7:])
+			logger.Println("Connecting to UNIX socket", endpoint[7:])
+			conn, err = net.Dial("unix", endpoint[7:])
 		case "tcp":
+			logger.Println("Connecting to TCP socket", u.Host)
 			conn, err = net.Dial("tcp", u.Host)
 		default:
+			logger.Println("Unknown protocol or malformed address - check your endpoint")
 			err = errors.New("protocol not supported")
 		}
 	} else {
-		conn, err = net.Dial("tcp", *server)
+		logger.Println("Connecting to TCP socket", u.Host)
+		conn, err = net.Dial("tcp", endpoint)
 	}
 	if err != nil {
 		panic(err)
 	}
+	logger.Println("Connected")
 	defer conn.Close()
 
 	decoder := json.NewDecoder(conn)
@@ -57,11 +121,13 @@ func main() {
 
 	for c, a := range args {
 		if c == 0 {
+			logger.Printf("Sending request: %v\n", a)
 			send["request"] = a
 			continue
 		}
 		tokens := strings.Split(a, "=")
 		if i, err := strconv.Atoi(tokens[1]); err == nil {
+			logger.Printf("Sending parameter %s: %d\n", tokens[0], i)
 			send[tokens[0]] = i
 		} else {
 			switch strings.ToLower(tokens[1]) {
@@ -72,28 +138,31 @@ func main() {
 			default:
 				send[tokens[0]] = tokens[1]
 			}
+			logger.Printf("Sending parameter %s: %v\n", tokens[0], send[tokens[0]])
 		}
 	}
 
 	if err := encoder.Encode(&send); err != nil {
 		panic(err)
 	}
+	logger.Printf("Request sent")
 	if err := decoder.Decode(&recv); err == nil {
+		logger.Printf("Response received")
 		if recv["status"] == "error" {
 			if err, ok := recv["error"]; ok {
-				fmt.Println("Error:", err)
+				fmt.Println("Admin socket returned an error:", err)
 			} else {
-				fmt.Println("Unspecified error occured")
+				fmt.Println("Admin socket returned an error but didn't specify any error text")
 			}
 			os.Exit(1)
 		}
 		if _, ok := recv["request"]; !ok {
 			fmt.Println("Missing request in response (malformed response?)")
-			return
+			os.Exit(1)
 		}
 		if _, ok := recv["response"]; !ok {
 			fmt.Println("Missing response body (malformed response?)")
-			return
+			os.Exit(1)
 		}
 		req := recv["request"].(map[string]interface{})
 		res := recv["response"].(map[string]interface{})
@@ -181,6 +250,12 @@ func main() {
 			}
 		case "getself":
 			for k, v := range res["self"].(map[string]interface{}) {
+				if buildname, ok := v.(map[string]interface{})["build_name"].(string); ok && buildname != "unknown" {
+					fmt.Println("Build name:", buildname)
+				}
+				if buildversion, ok := v.(map[string]interface{})["build_version"].(string); ok && buildversion != "unknown" {
+					fmt.Println("Build version:", buildversion)
+				}
 				fmt.Println("IPv6 address:", k)
 				if subnet, ok := v.(map[string]interface{})["subnet"].(string); ok {
 					fmt.Println("IPv6 subnet:", subnet)
@@ -227,7 +302,7 @@ func main() {
 						queuesize := v.(map[string]interface{})["queue_size"].(float64)
 						queuepackets := v.(map[string]interface{})["queue_packets"].(float64)
 						queueid := v.(map[string]interface{})["queue_id"].(string)
-						portqueues[queueport] += 1
+						portqueues[queueport]++
 						portqueuesize[queueport] += queuesize
 						portqueuepackets[queueport] += queuepackets
 						queuesizepercent := (100 / maximumqueuesize) * queuesize
@@ -315,9 +390,11 @@ func main() {
 				fmt.Println(string(json))
 			}
 		}
+	} else {
+		logger.Println("Error receiving response:", err)
 	}
 
-	if v, ok := recv["status"]; ok && v == "error" {
+	if v, ok := recv["status"]; ok && v != "success" {
 		os.Exit(1)
 	}
 	os.Exit(0)

contrib/config/yggdrasilconf.go

@@ -17,7 +17,7 @@ import (
 	"github.com/neilalexander/hjson-go"
 	"golang.org/x/text/encoding/unicode"
 
-	"yggdrasil/config"
+	"github.com/yggdrasil-network/yggdrasil-go/src/config"
 )
 
 type nodeConfig = config.NodeConfig

contrib/deb/generate.sh

@@ -7,12 +7,12 @@
 if [ `pwd` != `git rev-parse --show-toplevel` ]
 then
   echo "You should run this script from the top-level directory of the git repo"
-  exit -1
+  exit 1
 fi
 
 PKGBRANCH=$(basename `git name-rev --name-only HEAD`)
 PKGNAME=$(sh contrib/semver/name.sh)
-PKGVERSION=$(sh contrib/semver/version.sh | cut -c 2-)
+PKGVERSION=$(sh contrib/semver/version.sh --bare)
 PKGARCH=${PKGARCH-amd64}
 PKGFILE=$PKGNAME-$PKGVERSION-$PKGARCH.deb
 PKGREPLACES=yggdrasil
@@ -29,7 +29,7 @@ elif [ $PKGARCH = "armhf" ]; then GOARCH=arm GOOS=linux GOARM=7 ./build
 elif [ $PKGARCH = "arm64" ]; then GOARCH=arm64 GOOS=linux ./build
 else
   echo "Specify PKGARCH=amd64,i386,mips,mipsel,armhf,arm64"
-  exit -1
+  exit 1
 fi
 
 echo "Building $PKGFILE"

contrib/docker/Dockerfile

@@ -1,18 +1,22 @@
-FROM golang:stretch
-MAINTAINER Christer Waren/CWINFO "christer.waren@cwinfo.org"
-
-RUN apt-get update \
-    && apt-get upgrade -y
-
-ADD . /src
+FROM docker.io/golang:alpine as builder
 
+COPY . /src
 WORKDIR /src
+RUN apk add git && ./build 
 
-RUN adduser --system --home /etc/yggdrasil-network --uid 1000 yggdrasil-network \
-    && rm -rf build_* && ./build \
-    && cp yggdrasil /usr/bin \
-    && cp contrib/docker/entrypoint.sh /
+FROM docker.io/alpine
+LABEL maintainer="Christer Waren/CWINFO <christer.waren@cwinfo.org>"
+
+COPY --from=builder /src/yggdrasil /usr/bin/yggdrasil
+COPY --from=builder /src/yggdrasilctl /usr/bin/yggdrasilctl
+COPY contrib/docker/entrypoint.sh /usr/bin/entrypoint.sh
+
+# RUN addgroup -g 1000 -S yggdrasil-network \
+#  && adduser -u 1000 -S -g 1000 --home /etc/yggdrasil-network yggdrasil-network
+#
+# USER yggdrasil-network
+# TODO: Make running unprivileged work
 
 VOLUME [ "/etc/yggdrasil-network" ]
 
-ENTRYPOINT [ "/entrypoint.sh" ]
+ENTRYPOINT [ "/usr/bin/entrypoint.sh" ]

contrib/docker/entrypoint.sh

@@ -1,4 +1,4 @@
-#!/usr/bin/env bash
+#!/usr/bin/env sh
 
 set -e
 

contrib/macos/create-pkg.sh

@@ -72,7 +72,7 @@ chmod +x pkgbuild/root/usr/local/bin/yggdrasilctl
 
 # Work out metadata for the package info
 PKGNAME=$(sh contrib/semver/name.sh)
-PKGVERSION=$(sh contrib/semver/version.sh | cut -c 2-)
+PKGVERSION=$(sh contrib/semver/version.sh --bare)
 PKGARCH=${PKGARCH-amd64}
 PAYLOADSIZE=$(( $(wc -c pkgbuild/flat/base.pkg/Payload | awk '{ print $1 }') / 1024 ))
 

contrib/rpm/yggdrasil.spec

@@ -0,0 +1,47 @@
+Name:           yggdrasil
+Version:        0.3.0
+Release:        1%{?dist}
+Summary:        End-to-end encrypted IPv6 networking
+
+License:        GPLv3
+URL:            https://yggdrasil-network.github.io
+Source0:        https://codeload.github.com/yggdrasil-network/yggdrasil-go/tar.gz/v0.3.0
+
+%{?systemd_requires}
+BuildRequires:  systemd golang >= 1.11
+
+%description
+Yggdrasil is a proof-of-concept to explore a wholly different approach to
+network routing. Whereas current computer networks depend heavily on very
+centralised design and configuration, Yggdrasil breaks this mould by making
+use of a global spanning tree to form a scalable IPv6 encrypted mesh network.
+
+%prep
+%setup -qn yggdrasil-go-%{version}
+
+%build
+./build -t -l "-linkmode=external"
+
+%install
+rm -rf %{buildroot}
+mkdir -p %{buildroot}/%{_bindir}
+mkdir -p %{buildroot}/%{_sysconfdir}/systemd/system
+install -m 0755 yggdrasil %{buildroot}/%{_bindir}/yggdrasil
+install -m 0755 yggdrasilctl %{buildroot}/%{_bindir}/yggdrasilctl
+install -m 0755 contrib/systemd/yggdrasil.service %{buildroot}/%{_sysconfdir}/systemd/system/yggdrasil.service
+install -m 0755 contrib/systemd/yggdrasil-resume.service %{buildroot}/%{_sysconfdir}/systemd/system/yggdrasil-resume.service
+
+%files
+%{_bindir}/yggdrasil
+%{_bindir}/yggdrasilctl
+%{_sysconfdir}/systemd/system/yggdrasil.service
+%{_sysconfdir}/systemd/system/yggdrasil-resume.service
+
+%post
+%systemd_post yggdrasil.service
+
+%preun
+%systemd_preun yggdrasil.service
+
+%postun
+%systemd_postun_with_restart yggdrasil.service

contrib/semver/name.sh

@@ -1,7 +1,16 @@
 #!/bin/sh
 
-# Get the branch name, removing any "/" characters from pull requests
-BRANCH=$(git symbolic-ref --short HEAD | tr -d "/" 2>/dev/null)
+# Get the current branch name
+BRANCH=$(git symbolic-ref --short HEAD 2>/dev/null)
+
+# Complain if the git history is not available
+if [ $? != 0 ]; then
+  printf "unknown"
+  exit 1
+fi
+
+# Remove "/" characters from the branch name if present
+BRANCH=$(echo $BRANCH | tr -d "/")
 
 # Check if the branch name is not master
 if [ "$BRANCH" = "master" ]; then

contrib/semver/version.sh

@@ -4,7 +4,7 @@
 DEVELOPBRANCH="yggdrasil-network/develop"
 
 # Get the last tag
-TAG=$(git describe --abbrev=0 --tags --match="v[0-9]*\.[0-9]*" 2>/dev/null)
+TAG=$(git describe --abbrev=0 --tags --match="v[0-9]*\.[0-9]*\.0" 2>/dev/null)
 
 # Get last merge to master
 MERGE=$(git rev-list $TAG..master --grep "from $DEVELOPBRANCH" 2>/dev/null | head -n 1)
@@ -12,12 +12,25 @@ MERGE=$(git rev-list $TAG..master --grep "from $DEVELOPBRANCH" 2>/dev/null | hea
 # Get the number of merges since the last merge to master
 PATCH=$(git rev-list $TAG..master --count --merges --grep="from $DEVELOPBRANCH" 2>/dev/null)
 
+# Decide whether we should prepend the version with "v" - the default is that
+# we do because we use it in git tags, but we might not always need it
+PREPEND="v"
+if [ "$1" = "--bare" ]; then
+  PREPEND=""
+fi
+
 # If it fails then there's no last tag - go from the first commit
 if [ $? != 0 ]; then
   PATCH=$(git rev-list HEAD --count 2>/dev/null)
 
-  printf 'v0.0.%d' "$PATCH"
-  exit -1
+  # Complain if the git history is not available
+  if [ $? != 0 ]; then
+    printf 'unknown'
+    exit 1
+  fi
+
+  printf '%s0.0.%d' "$PREPEND" "$PATCH"
+  exit 1
 fi
 
 # Get the number of merges on the current branch since the last tag
@@ -32,9 +45,13 @@ BRANCH=$(git rev-parse --abbrev-ref HEAD)
 
 # Output in the desired format
 if [ $PATCH = 0 ]; then
-  printf 'v%d.%d' "$MAJOR" "$MINOR"
+  if [ ! -z $FULL ]; then
+    printf '%s%d.%d.0' "$PREPEND" "$MAJOR" "$MINOR"
   else
-  printf 'v%d.%d.%d' "$MAJOR" "$MINOR" "$PATCH"
+    printf '%s%d.%d' "$PREPEND" "$MAJOR" "$MINOR"
+  fi
+else
+  printf '%s%d.%d.%d' "$PREPEND" "$MAJOR" "$MINOR" "$PATCH"
 fi
 
 # Add the build tag on non-master branches
@@ -43,4 +60,3 @@ if [ $BRANCH != "master" ]; then
     printf -- "-%04d" "$BUILD"
   fi
 fi
-

go.mod

@@ -0,0 +1,14 @@
+module github.com/yggdrasil-network/yggdrasil-go
+
+require (
+	github.com/docker/libcontainer v2.2.1+incompatible
+	github.com/kardianos/minwinsvc v0.0.0-20151122163309-cad6b2b879b0
+	github.com/mitchellh/mapstructure v1.1.2
+	github.com/neilalexander/hjson-go v0.0.0-20180509131856-23267a251165
+	github.com/songgao/packets v0.0.0-20160404182456-549a10cd4091
+	github.com/yggdrasil-network/water v0.0.0-20180615095340-f732c88f34ae
+	golang.org/x/crypto v0.0.0-20181203042331-505ab145d0a9
+	golang.org/x/net v0.0.0-20181207154023-610586996380
+	golang.org/x/sys v0.0.0-20181206074257-70b957f3b65e
+	golang.org/x/text v0.3.0
+)

go.sum

@@ -0,0 +1,20 @@
+github.com/docker/libcontainer v2.2.1+incompatible h1:++SbbkCw+X8vAd4j2gOCzZ2Nn7s2xFALTf7LZKmM1/0=
+github.com/docker/libcontainer v2.2.1+incompatible/go.mod h1:osvj61pYsqhNCMLGX31xr7klUBhHb/ZBuXS0o1Fvwbw=
+github.com/kardianos/minwinsvc v0.0.0-20151122163309-cad6b2b879b0 h1:YnZmFjg0Nvk8851WTVWlqMC1ecJH07Ctz+Ezxx4u54g=
+github.com/kardianos/minwinsvc v0.0.0-20151122163309-cad6b2b879b0/go.mod h1:rUi0/YffDo1oXBOGn1KRq7Fr07LX48XEBecQnmwjsAo=
+github.com/mitchellh/mapstructure v1.1.2 h1:fmNYVwqnSfB9mZU6OS2O6GsXM+wcskZDuKQzvN1EDeE=
+github.com/mitchellh/mapstructure v1.1.2/go.mod h1:FVVH3fgwuzCH5S8UJGiWEs2h04kUh9fWfEaFds41c1Y=
+github.com/neilalexander/hjson-go v0.0.0-20180509131856-23267a251165 h1:Oo7Yfu5lEQLGvvh2p9Z8FRHJIsl7fdOCK9xXFNBkqmQ=
+github.com/neilalexander/hjson-go v0.0.0-20180509131856-23267a251165/go.mod h1:l+Zao6IpQ+6d/y7LnYnOfbfOeU/9xRiTi4HLVpnkcTg=
+github.com/songgao/packets v0.0.0-20160404182456-549a10cd4091 h1:1zN6ImoqhSJhN8hGXFaJlSC8msLmIbX8bFqOfWLKw0w=
+github.com/songgao/packets v0.0.0-20160404182456-549a10cd4091/go.mod h1:N20Z5Y8oye9a7HmytmZ+tr8Q2vlP0tAHP13kTHzwvQY=
+github.com/yggdrasil-network/water v0.0.0-20180615095340-f732c88f34ae h1:MYCANF1kehCG6x6G+/9txLfq6n3lS5Vp0Mxn1hdiBAc=
+github.com/yggdrasil-network/water v0.0.0-20180615095340-f732c88f34ae/go.mod h1:R0SBCsugm+Sf1katgTb2t7GXMm+nRIv43tM4VDZbaOs=
+golang.org/x/crypto v0.0.0-20181203042331-505ab145d0a9 h1:mKdxBk7AujPs8kU4m80U72y/zjbZ3UcXC7dClwKbUI0=
+golang.org/x/crypto v0.0.0-20181203042331-505ab145d0a9/go.mod h1:6SG95UA2DQfeDnfUPMdvaQW0Q7yPrPDi9nlGo2tz2b4=
+golang.org/x/net v0.0.0-20181207154023-610586996380 h1:zPQexyRtNYBc7bcHmehl1dH6TB3qn8zytv8cBGLDNY0=
+golang.org/x/net v0.0.0-20181207154023-610586996380/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
+golang.org/x/sys v0.0.0-20181206074257-70b957f3b65e h1:njOxP/wVblhCLIUhjHXf6X+dzTt5OQ3vMQo9mkOIKIo=
+golang.org/x/sys v0.0.0-20181206074257-70b957f3b65e/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
+golang.org/x/text v0.3.0 h1:g61tztE5qeGQ89tm6NTjjM9VPIm088od1l6aSorWRWg=
+golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=

misc/genkeys.go

@@ -16,7 +16,7 @@ import "encoding/hex"
 import "flag"
 import "fmt"
 import "runtime"
-import . "yggdrasil"
+import . "github.com/yggdrasil-network/yggdrasil-go/src/yggdrasil"
 
 var doSig = flag.Bool("sig", false, "generate new signing keys instead")
 

misc/sim/run-sim

@@ -1,4 +1,2 @@
 #!/bin/bash
-export GOPATH=$PWD
-go get -d yggdrasil
 go run -tags debug misc/sim/treesim.go "$@"

misc/sim/treesim.go

@@ -12,7 +12,7 @@ import "runtime"
 import "runtime/pprof"
 import "flag"
 
-import . "yggdrasil"
+import . "github.com/yggdrasil-network/yggdrasil-go/src/yggdrasil"
 
 ////////////////////////////////////////////////////////////////////////////////
 

src/config/config.go

@@ -3,7 +3,7 @@ package config
 // NodeConfig defines all configuration values needed to run a signle yggdrasil node
 type NodeConfig struct {
 	Listen                      string              `comment:"Listen address for peer connections. Default is to listen for all\nTCP connections over IPv4 and IPv6 with a random port."`
-	AdminListen                 string              `comment:"Listen address for admin connections Default is to listen for local\nconnections either on TCP/9001 or a UNIX socket depending on your\nplatform. Use this value for yggdrasilctl -endpoint=X."`
+	AdminListen                 string              `comment:"Listen address for admin connections. Default is to listen for local\nconnections either on TCP/9001 or a UNIX socket depending on your\nplatform. Use this value for yggdrasilctl -endpoint=X. To disable\nthe admin socket, use the value \"none\" instead."`
 	Peers                       []string            `comment:"List of connection strings for static peers in URI format, e.g.\ntcp://a.b.c.d:e or socks://a.b.c.d:e/f.g.h.i:j."`
 	InterfacePeers              map[string][]string `comment:"List of connection strings for static peers in URI format, arranged\nby source interface, e.g. { \"eth0\": [ tcp://a.b.c.d:e ] }. Note that\nSOCKS peerings will NOT be affected by this option and should go in\nthe \"Peers\" section instead."`
 	ReadTimeout                 int32               `comment:"Read timeout for connections, specified in milliseconds. If less\nthan 6000 and not negative, 6000 (the default) is used. If negative,\nreads won't time out."`

src/defaults/defaults.go

@@ -7,6 +7,9 @@ type platformDefaultParameters struct {
 	// Admin socket
 	DefaultAdminListen string
 
+	// Configuration (used for yggdrasilctl)
+	DefaultConfigFile string
+
 	// TUN/TAP
 	MaximumIfMTU     int
 	DefaultIfMTU     int

src/defaults/defaults_darwin.go

@@ -7,7 +7,10 @@ package defaults
 func GetDefaults() platformDefaultParameters {
 	return platformDefaultParameters{
 		// Admin
-		DefaultAdminListen: "tcp://localhost:9001",
+		DefaultAdminListen: "unix:///var/run/yggdrasil.sock",
+
+		// Configuration (used for yggdrasilctl)
+		DefaultConfigFile: "/etc/yggdrasil.conf",
 
 		// TUN/TAP
 		MaximumIfMTU:     65535,

src/defaults/defaults_freebsd.go

@@ -7,7 +7,10 @@ package defaults
 func GetDefaults() platformDefaultParameters {
 	return platformDefaultParameters{
 		// Admin
-		DefaultAdminListen: "tcp://localhost:9001",
+		DefaultAdminListen: "unix:///var/run/yggdrasil.sock",
+
+		// Configuration (used for yggdrasilctl)
+		DefaultConfigFile: "/etc/yggdrasil.conf",
 
 		// TUN/TAP
 		MaximumIfMTU:     32767,

src/defaults/defaults_linux.go

@@ -7,7 +7,10 @@ package defaults
 func GetDefaults() platformDefaultParameters {
 	return platformDefaultParameters{
 		// Admin
-		DefaultAdminListen: "tcp://localhost:9001",
+		DefaultAdminListen: "unix:///var/run/yggdrasil.sock",
+
+		// Configuration (used for yggdrasilctl)
+		DefaultConfigFile: "/etc/yggdrasil.conf",
 
 		// TUN/TAP
 		MaximumIfMTU:     65535,

src/defaults/defaults_netbsd.go

@@ -7,7 +7,10 @@ package defaults
 func GetDefaults() platformDefaultParameters {
 	return platformDefaultParameters{
 		// Admin
-		DefaultAdminListen: "tcp://localhost:9001",
+		DefaultAdminListen: "unix:///var/run/yggdrasil.sock",
+
+		// Configuration (used for yggdrasilctl)
+		DefaultConfigFile: "/etc/yggdrasil.conf",
 
 		// TUN/TAP
 		MaximumIfMTU:     9000,

src/defaults/defaults_openbsd.go

@@ -7,7 +7,10 @@ package defaults
 func GetDefaults() platformDefaultParameters {
 	return platformDefaultParameters{
 		// Admin
-		DefaultAdminListen: "tcp://localhost:9001",
+		DefaultAdminListen: "unix:///var/run/yggdrasil.sock",
+
+		// Configuration (used for yggdrasilctl)
+		DefaultConfigFile: "/etc/yggdrasil.conf",
 
 		// TUN/TAP
 		MaximumIfMTU:     16384,

src/defaults/defaults_other.go

@@ -9,6 +9,9 @@ func GetDefaults() platformDefaultParameters {
 		// Admin
 		DefaultAdminListen: "tcp://localhost:9001",
 
+		// Configuration (used for yggdrasilctl)
+		DefaultConfigFile: "/etc/yggdrasil.conf",
+
 		// TUN/TAP
 		MaximumIfMTU:     65535,
 		DefaultIfMTU:     65535,

src/defaults/defaults_windows.go

@@ -9,6 +9,9 @@ func GetDefaults() platformDefaultParameters {
 		// Admin
 		DefaultAdminListen: "tcp://localhost:9001",
 
+		// Configuration (used for yggdrasilctl)
+		DefaultConfigFile: "C:\\Program Files\\Yggdrasil\\yggdrasil.conf",
+
 		// TUN/TAP
 		MaximumIfMTU:     65535,
 		DefaultIfMTU:     65535,

src/yggdrasil/admin.go

@@ -14,7 +14,7 @@ import (
 	"sync/atomic"
 	"time"
 
-	"yggdrasil/defaults"
+	"github.com/yggdrasil-network/yggdrasil-go/src/defaults"
 )
 
 // TODO: Add authentication
@@ -268,11 +268,11 @@ func (a *admin) init(c *Core, listenaddr string) {
 		return admin_info{"source_subnets": subnets}, nil
 	})
 	a.addHandler("getRoutes", []string{}, func(in admin_info) (admin_info, error) {
-		var routes []string
+		routes := make(admin_info)
 		a.core.router.doAdmin(func() {
 			getRoutes := func(ckrs []cryptokey_route) {
 				for _, ckr := range ckrs {
-					routes = append(routes, fmt.Sprintf("%s via %s", ckr.subnet.String(), hex.EncodeToString(ckr.destination[:])))
+					routes[ckr.subnet.String()] = hex.EncodeToString(ckr.destination[:])
 				}
 			}
 			getRoutes(a.core.router.cryptokey.ipv4routes)
@@ -326,7 +326,9 @@ func (a *admin) init(c *Core, listenaddr string) {
 
 // start runs the admin API socket to listen for / respond to admin API calls.
 func (a *admin) start() error {
+	if a.listenaddr != "none" && a.listenaddr != "" {
 		go a.listen()
+	}
 	return nil
 }
 
@@ -341,7 +343,19 @@ func (a *admin) listen() {
 	if err == nil {
 		switch strings.ToLower(u.Scheme) {
 		case "unix":
+			if _, err := os.Stat(a.listenaddr[7:]); err == nil {
+				a.core.log.Println("WARNING:", a.listenaddr[7:], "already exists and may be in use by another process")
+			}
 			a.listener, err = net.Listen("unix", a.listenaddr[7:])
+			if err == nil {
+				switch a.listenaddr[7:8] {
+				case "@": // maybe abstract namespace
+				default:
+					if err := os.Chmod(a.listenaddr[7:], 0660); err != nil {
+						a.core.log.Println("WARNING:", a.listenaddr[:7], "may have unsafe permissions!")
+					}
+				}
+			}
 		case "tcp":
 			a.listener, err = net.Listen("tcp", u.Host)
 		default:
@@ -561,6 +575,13 @@ func (a *admin) getData_getSelf() *admin_nodeInfo {
 		{"subnet", a.core.GetSubnet().String()},
 		{"coords", fmt.Sprint(coords)},
 	}
+	if name := GetBuildName(); name != "unknown" {
+		self = append(self, admin_pair{"build_name", name})
+	}
+	if version := GetBuildVersion(); version != "unknown" {
+		self = append(self, admin_pair{"build_version", version})
+	}
+
 	return &self
 }
 
@@ -737,6 +758,10 @@ func (a *admin) admin_dhtPing(keyString, coordString, targetString string) (dhtR
 	}
 	var coords []byte
 	for _, cstr := range strings.Split(strings.Trim(coordString, "[]"), " ") {
+		if cstr == "" {
+			// Special case, happens if trimmed is the empty string, e.g. this is the root
+			continue
+		}
 		if u64, err := strconv.ParseUint(cstr, 10, 8); err != nil {
 			return dhtRes{}, err
 		} else {

src/yggdrasil/ckr.go

@@ -241,6 +241,16 @@ func (c *cryptokey) getPublicKeyForAddress(addr address, addrlen int) (boxPubKey
 	for _, route := range *routingtable {
 		// Does this subnet match the given IP?
 		if route.subnet.Contains(ip) {
+			// Check if the routing cache is above a certain size, if it is evict
+			// a random entry so we can make room for this one. We take advantage
+			// of the fact that the iteration order is random here
+			for k := range *routingcache {
+				if len(*routingcache) < 1024 {
+					break
+				}
+				delete(*routingcache, k)
+			}
+
 			// Cache the entry for future packets to get a faster lookup
 			(*routingcache)[addr] = route
 

src/yggdrasil/core.go

@@ -8,10 +8,13 @@ import (
 	"net"
 	"regexp"
 
-	"yggdrasil/config"
-	"yggdrasil/defaults"
+	"github.com/yggdrasil-network/yggdrasil-go/src/config"
+	"github.com/yggdrasil-network/yggdrasil-go/src/defaults"
 )
 
+var buildName string
+var buildVersion string
+
 // The Core object represents the Yggdrasil node. You should create a Core
 // object for each Yggdrasil node you plan to run.
 type Core struct {
@@ -59,12 +62,38 @@ func (c *Core) init(bpub *boxPubKey,
 	c.tun.init(c)
 }
 
+// Get the current build name. This is usually injected if built from git,
+// or returns "unknown" otherwise.
+func GetBuildName() string {
+	if buildName == "" {
+		return "unknown"
+	}
+	return buildName
+}
+
+// Get the current build version. This is usually injected if built from git,
+// or returns "unknown" otherwise.
+func GetBuildVersion() string {
+	if buildVersion == "" {
+		return "unknown"
+	}
+	return buildVersion
+}
+
 // Starts up Yggdrasil using the provided NodeConfig, and outputs debug logging
 // through the provided log.Logger. The started stack will include TCP and UDP
 // sockets, a multicast discovery socket, an admin socket, router, switch and
 // DHT node.
 func (c *Core) Start(nc *config.NodeConfig, log *log.Logger) error {
 	c.log = log
+
+	if name := GetBuildName(); name != "unknown" {
+		c.log.Println("Build name:", name)
+	}
+	if version := GetBuildVersion(); version != "unknown" {
+		c.log.Println("Build version:", version)
+	}
+
 	c.log.Println("Starting up...")
 
 	var boxPub boxPubKey

src/yggdrasil/debug.go

@@ -22,7 +22,7 @@ import "net/http"
 import "runtime"
 import "os"
 
-import "yggdrasil/defaults"
+import "github.com/yggdrasil-network/yggdrasil-go/src/defaults"
 
 // Start the profiler in debug builds, if the required environment variable is set.
 func init() {
@@ -504,27 +504,43 @@ func (c *Core) DEBUG_addAllowedEncryptionPublicKey(boxStr string) {
 
 func DEBUG_simLinkPeers(p, q *peer) {
 	// Sets q.out() to point to p and starts p.linkLoop()
-	p.linkOut, q.linkOut = make(chan []byte, 1), make(chan []byte, 1)
+	goWorkers := func(source, dest *peer) {
+		source.linkOut = make(chan []byte, 1)
+		send := make(chan []byte, 1)
+		source.out = func(bs []byte) {
+			send <- bs
+		}
+		go source.linkLoop()
 		go func() {
-		for bs := range p.linkOut {
-			q.handlePacket(bs)
+			var packets [][]byte
+			for {
+				select {
+				case packet := <-source.linkOut:
+					packets = append(packets, packet)
+					continue
+				case packet := <-send:
+					packets = append(packets, packet)
+					source.core.switchTable.idleIn <- source.port
+					continue
+				default:
+				}
+				if len(packets) > 0 {
+					dest.handlePacket(packets[0])
+					packets = packets[1:]
+					continue
+				}
+				select {
+				case packet := <-source.linkOut:
+					packets = append(packets, packet)
+				case packet := <-send:
+					packets = append(packets, packet)
+					source.core.switchTable.idleIn <- source.port
+				}
 			}
 		}()
-	go func() {
-		for bs := range q.linkOut {
-			p.handlePacket(bs)
 	}
-	}()
-	p.out = func(bs []byte) {
-		p.core.switchTable.idleIn <- p.port
-		go q.handlePacket(bs)
-	}
-	q.out = func(bs []byte) {
-		q.core.switchTable.idleIn <- q.port
-		go p.handlePacket(bs)
-	}
-	go p.linkLoop()
-	go q.linkLoop()
+	goWorkers(p, q)
+	goWorkers(q, p)
 	p.core.switchTable.idleIn <- p.port
 	q.core.switchTable.idleIn <- q.port
 }

src/yggdrasil/multicast.go

@@ -1,6 +1,7 @@
 package yggdrasil
 
 import (
+	"context"
 	"fmt"
 	"net"
 	"time"
@@ -35,7 +36,10 @@ func (m *multicast) start() error {
 			return err
 		}
 		listenString := fmt.Sprintf("[::]:%v", addr.Port)
-		conn, err := net.ListenPacket("udp6", listenString)
+		lc := net.ListenConfig{
+			Control: multicastReuse,
+		}
+		conn, err := lc.ListenPacket(context.Background(), "udp6", listenString)
 		if err != nil {
 			return err
 		}

src/yggdrasil/multicast_other.go

@@ -0,0 +1,9 @@
+// +build !linux,!darwin,!netbsd,!freebsd,!openbsd,!dragonflybsd,!windows
+
+package yggdrasil
+
+import "syscall"
+
+func multicastReuse(network string, address string, c syscall.RawConn) error {
+	return nil
+}

src/yggdrasil/multicast_unix.go

@@ -0,0 +1,22 @@
+// +build linux darwin netbsd freebsd openbsd dragonflybsd
+
+package yggdrasil
+
+import "syscall"
+import "golang.org/x/sys/unix"
+
+func multicastReuse(network string, address string, c syscall.RawConn) error {
+	var control error
+	var reuseport error
+
+	control = c.Control(func(fd uintptr) {
+		reuseport = unix.SetsockoptInt(int(fd), unix.SOL_SOCKET, unix.SO_REUSEPORT, 1)
+	})
+
+	switch {
+	case reuseport != nil:
+		return reuseport
+	default:
+		return control
+	}
+}

src/yggdrasil/multicast_windows.go

@@ -0,0 +1,22 @@
+// +build windows
+
+package yggdrasil
+
+import "syscall"
+import "golang.org/x/sys/windows"
+
+func multicastReuse(network string, address string, c syscall.RawConn) error {
+	var control error
+	var reuseaddr error
+
+	control = c.Control(func(fd uintptr) {
+		reuseaddr = windows.SetsockoptInt(windows.Handle(fd), windows.SOL_SOCKET, windows.SO_REUSEADDR, 1)
+	})
+
+	switch {
+	case reuseaddr != nil:
+		return reuseaddr
+	default:
+		return control
+	}
+}

src/yggdrasil/switch.go

@@ -208,6 +208,7 @@ func (t *switchTable) doMaintenance() {
 	defer t.mutex.Unlock() // Release lock when we're done
 	t.cleanRoot()
 	t.cleanDropped()
+	t.cleanPeers()
 }
 
 // Updates the root periodically if it is ourself, or promotes ourself to root if we're better than the current root or if the current root has timed out.
@@ -258,11 +259,33 @@ func (t *switchTable) forgetPeer(port switchPort) {
 	if port != t.parent {
 		return
 	}
+	t.parent = 0
 	for _, info := range t.data.peers {
 		t.unlockedHandleMsg(&info.msg, info.port, true)
 	}
 }
 
+// Clean all unresponsive peers from the table, needed in case a peer stops updating.
+// Needed in case a non-parent peer keeps the connection open but stops sending updates.
+// Also reclaims space from deleted peers by copying the map.
+func (t *switchTable) cleanPeers() {
+	now := time.Now()
+	for port, peer := range t.data.peers {
+		if now.Sub(peer.time) > switch_timeout+switch_throttle {
+			// Longer than switch_timeout to make sure we don't remove a working peer because the root stopped responding.
+			delete(t.data.peers, port)
+		}
+	}
+	if _, isIn := t.data.peers[t.parent]; !isIn {
+		// The root timestamp would probably time out before this happens, but better safe than sorry.
+		// We removed the current parent, so find a new one.
+		t.parent = 0
+		for _, peer := range t.data.peers {
+			t.unlockedHandleMsg(&peer.msg, peer.port, true)
+		}
+	}
+}
+
 // Dropped is a list of roots that are better than the current root, but stopped sending new timestamps.
 // If we switch to a new root, and that root is better than an old root that previously timed out, then we can clean up the old dropped root infos.
 // This function is called periodically to do that cleanup.
@@ -377,6 +400,8 @@ func (t *switchTable) unlockedHandleMsg(msg *switchMsg, fromPort switchPort, rep
 	doUpdate := false
 	oldSender := t.data.peers[fromPort]
 	if !equiv(&sender.locator, &oldSender.locator) {
+		// Reset faster info, we'll start refilling it right after this
+		sender.faster = nil
 		doUpdate = true
 	}
 	// Update the matrix of peer "faster" thresholds
@@ -387,25 +412,20 @@ func (t *switchTable) unlockedHandleMsg(msg *switchMsg, fromPort switchPort, rep
 		for port, peer := range t.data.peers {
 			if port == fromPort {
 				continue
-			}
-			switch {
-			case msg.Root != peer.locator.root:
-				// Different roots, blindly guess that the relationships will stay the same?
-				sender.faster[port] = oldSender.faster[peer.port]
-			case sender.locator.tstamp <= peer.locator.tstamp:
-				// Slower than this node, penalize (more than the reward amount)
-				if oldSender.faster[port] > 1 {
-					sender.faster[port] = oldSender.faster[peer.port] - 2
-				} else {
-					sender.faster[port] = 0
-				}
-			default:
+			} else if sender.locator.root != peer.locator.root || sender.locator.tstamp > peer.locator.tstamp {
 				// We were faster than this node, so increment, as long as we don't overflow because of it
 				if oldSender.faster[peer.port] < switch_faster_threshold {
 					sender.faster[port] = oldSender.faster[peer.port] + 1
 				} else {
 					sender.faster[port] = switch_faster_threshold
 				}
+			} else {
+				// Slower than this node, penalize (more than the reward amount)
+				if oldSender.faster[port] > 1 {
+					sender.faster[port] = oldSender.faster[peer.port] - 2
+				} else {
+					sender.faster[port] = 0
+				}
 			}
 		}
 	}
@@ -457,12 +477,10 @@ func (t *switchTable) unlockedHandleMsg(msg *switchMsg, fromPort switchPort, rep
 		// First, reset all faster-related info to 0.
 		// Then, de-parent the node and reprocess all messages to find a new parent.
 		t.parent = 0
-		sender.faster = nil
 		for _, peer := range t.data.peers {
 			if peer.port == sender.port {
 				continue
 			}
-			delete(peer.faster, sender.port)
 			t.unlockedHandleMsg(&peer.msg, peer.port, true)
 		}
 		// Process the sender last, to avoid keeping them as a parent if at all possible.

src/yggdrasil/tun.go

@@ -6,10 +6,11 @@ import (
 	"bytes"
 	"errors"
 	"time"
-	"yggdrasil/defaults"
 
 	"github.com/songgao/packets/ethernet"
 	"github.com/yggdrasil-network/water"
+
+	"github.com/yggdrasil-network/yggdrasil-go/src/defaults"
 )
 
 const tun_IPv6_HEADER_LENGTH = 40