first version

.gitignore

+/coverage/
+/bin/
+
+# User-specific stuff
+.idea/**/workspace.xml
+.idea/**/tasks.xml
+.idea/**/usage.statistics.xml
+.idea/**/dictionaries
+.idea/**/shelf
+
+# Generated files
+.idea/**/contentModel.xml
+
+# Sensitive or high-churn files
+.idea/**/dataSources/
+.idea/**/dataSources.ids
+.idea/**/dataSources.local.xml
+.idea/**/sqlDataSources.xml
+.idea/**/dynamic.xml
+.idea/**/uiDesigner.xml
+.idea/**/dbnavigator.xml
+
+# Gradle
+.idea/**/gradle.xml
+.idea/**/libraries
+
+# Gradle and Maven with auto-import
+# When using Gradle or Maven with auto-import, you should exclude module files,
+# since they will be recreated, and may cause churn.  Uncomment if using
+# auto-import.
+# .idea/modules.xml
+# .idea/*.iml
+# .idea/modules
+
+# CMake
+cmake-build-*/
+
+# Mongo Explorer plugin
+.idea/**/mongoSettings.xml
+
+# File-based project format
+*.iws
+
+# IntelliJ
+out/
+
+# mpeltonen/sbt-idea plugin
+.idea_modules/
+
+# JIRA plugin
+atlassian-ide-plugin.xml
+
+# Cursive Clojure plugin
+.idea/replstate.xml
+
+# Crashlytics plugin (for Android Studio and IntelliJ)
+com_crashlytics_export_strings.xml
+crashlytics.properties
+crashlytics-build.properties
+fabric.properties
+
+# Editor-based Rest Client
+.idea/httpRequests
+
+# Android studio 3.1+ serialized cache file
+.idea/caches/build_file_checksums.ser
\ No newline at end of file

.gitlab-ci.yml

+image: golang:1.16-buster
+
+cache:
+  paths:
+    - /apt-cache
+    - /go/src/github.com
+    - /go/src/golang.org
+    - /go/src/google.golang.org
+    - /go/src/gopkg.in
+
+stages:
+  - test
+  - build
+
+before_script:
+  - go get -u golang.org/x/lint/golint  
+
+lint_code:
+  stage: test
+  script:
+    - make lint
+  only:
+    - merge_requests
+    
+build:
+  stage: test
+  script:
+    - make build
+

.idea/.gitignore

+# Default ignored files
+/shelf/
+/workspace.xml
+# Datasource local storage ignored files
+/dataSources/
+/dataSources.local.xml
+# Editor-based HTTP Client requests
+/httpRequests/

.idea/aws.xml

+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="accountSettings">
+    <option name="activeProfile" value="profile:default" />
+    <option name="activeRegion" value="eu-west-1" />
+    <option name="recentlyUsedProfiles">
+      <list>
+        <option value="profile:default" />
+      </list>
+    </option>
+    <option name="recentlyUsedRegions">
+      <list>
+        <option value="eu-west-1" />
+      </list>
+    </option>
+  </component>
+</project>
\ No newline at end of file

.idea/markdown-navigator-enh.xml

+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="MarkdownEnhProjectSettings">
+    <AnnotatorSettings targetHasSpaces="true" linkCaseMismatch="true" wikiCaseMismatch="true" wikiLinkHasDashes="true" notUnderWikiHome="true" targetNotWikiPageExt="true" notUnderSourceWikiHome="true" targetNameHasAnchor="true" targetPathHasAnchor="true" wikiLinkHasSlash="true" wikiLinkHasSubdir="true" wikiLinkHasOnlyAnchor="true" linkTargetsWikiHasExt="true" linkTargetsWikiHasBadExt="true" notUnderSameRepo="true" targetNotUnderVcs="false" linkNeedsExt="true" linkHasBadExt="true" linkTargetNeedsExt="true" linkTargetHasBadExt="true" wikiLinkNotInWiki="true" imageTargetNotInRaw="true" repoRelativeAcrossVcsRoots="true" multipleWikiTargetsMatch="true" unresolvedLinkReference="true" linkIsIgnored="true" anchorIsIgnored="true" anchorIsUnresolved="true" anchorLineReferenceIsUnresolved="true" anchorLineReferenceFormat="true" anchorHasDuplicates="true" abbreviationDuplicates="true" abbreviationNotUsed="true" attributeIdDuplicateDefinition="true" attributeIdNotUsed="true" footnoteDuplicateDefinition="true" footnoteUnresolved="true" footnoteDuplicates="true" footnoteNotUsed="true" macroDuplicateDefinition="true" macroUnresolved="true" macroDuplicates="true" macroNotUsed="true" referenceDuplicateDefinition="true" referenceUnresolved="true" referenceDuplicates="true" referenceNotUsed="true" referenceUnresolvedNumericId="true" enumRefDuplicateDefinition="true" enumRefUnresolved="true" enumRefDuplicates="true" enumRefNotUsed="true" enumRefLinkUnresolved="true" enumRefLinkDuplicates="true" simTocUpdateNeeded="true" simTocTitleSpaceNeeded="true" />
+    <HtmlExportSettings updateOnSave="false" parentDir="" targetDir="" cssDir="css" scriptDir="js" plainHtml="false" imageDir="" copyLinkedImages="false" imagePathType="0" targetPathType="2" targetExt="" useTargetExt="false" noCssNoScripts="false" useElementStyleAttribute="false" linkToExportedHtml="true" exportOnSettingsChange="true" regenerateOnProjectOpen="false" linkFormatType="HTTP_ABSOLUTE" />
+    <LinkMapSettings>
+      <textMaps />
+    </LinkMapSettings>
+  </component>
+</project>
\ No newline at end of file

.idea/markdown-navigator.xml

+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="MarkdownProjectSettings">
+    <PreviewSettings splitEditorLayout="SPLIT" splitEditorPreview="PREVIEW" useGrayscaleRendering="false" zoomFactor="1.0" maxImageWidth="0" synchronizePreviewPosition="true" highlightPreviewType="LINE" highlightFadeOut="5" highlightOnTyping="true" synchronizeSourcePosition="true" verticallyAlignSourceAndPreviewSyncPosition="true" showSearchHighlightsInPreview="true" showSelectionInPreview="true" lastLayoutSetsDefault="false">
+      <PanelProvider>
+        <provider providerId="com.vladsch.md.nav.editor.swing.html.panel" providerName="Default - Swing" />
+      </PanelProvider>
+    </PreviewSettings>
+    <ParserSettings gitHubSyntaxChange="false" correctedInvalidSettings="false" emojiShortcuts="1" emojiImages="0">
+      <PegdownExtensions>
+        <option name="ATXHEADERSPACE" value="true" />
+        <option name="FENCED_CODE_BLOCKS" value="true" />
+        <option name="INTELLIJ_DUMMY_IDENTIFIER" value="true" />
+        <option name="RELAXEDHRULES" value="true" />
+        <option name="STRIKETHROUGH" value="true" />
+        <option name="TABLES" value="true" />
+        <option name="TASKLISTITEMS" value="true" />
+      </PegdownExtensions>
+      <ParserOptions>
+        <option name="COMMONMARK_LISTS" value="true" />
+        <option name="EMOJI_SHORTCUTS" value="true" />
+        <option name="GFM_TABLE_RENDERING" value="true" />
+        <option name="PRODUCTION_SPEC_PARSER" value="true" />
+        <option name="SIM_TOC_BLANK_LINE_SPACER" value="true" />
+      </ParserOptions>
+    </ParserSettings>
+    <HtmlSettings headerTopEnabled="false" headerBottomEnabled="false" bodyTopEnabled="false" bodyBottomEnabled="false" addPageHeader="false" addAnchorLinks="false" anchorLinksWrapText="false" imageUriSerials="false" addDocTypeHtml="true" noParaTags="false" defaultUrlTitle="false" migratedPlantUml="true" migratedAnchorLinks="true" plantUmlConversion="0">
+      <GeneratorProvider>
+        <provider providerId="com.vladsch.md.nav.editor.text.html.generator" providerName="Unmodified HTML Generator" />
+      </GeneratorProvider>
+      <headerTop />
+      <headerBottom />
+      <bodyTop />
+      <bodyBottom />
+      <fencedCodeConversions>
+        <option name="c4plantuml" value="NONE" />
+        <option name="ditaa" value="NONE" />
+        <option name="erd" value="NONE" />
+        <option name="graphviz" value="NONE" />
+        <option name="latex" value="KATEX" />
+        <option name="math" value="KATEX" />
+        <option name="mermaid" value="NONE" />
+        <option name="nomnoml" value="NONE" />
+        <option name="plantuml" value="NONE" />
+        <option name="puml" value="NONE" />
+        <option name="svgbob" value="NONE" />
+        <option name="umlet" value="NONE" />
+        <option name="vega" value="NONE" />
+        <option name="vegalite" value="NONE" />
+        <option name="wavedrom" value="NONE" />
+      </fencedCodeConversions>
+    </HtmlSettings>
+    <CssSettings previewScheme="UI_SCHEME" cssUri="" isCssUriEnabled="false" isCssUriSerial="true" isCssTextEnabled="false" isDynamicPageWidth="true">
+      <StylesheetProvider>
+        <provider providerId="com.vladsch.md.nav.editor.text.html.css" providerName="No Stylesheet" />
+      </StylesheetProvider>
+      <ScriptProviders />
+      <cssText />
+      <cssUriHistory />
+    </CssSettings>
+  </component>
+</project>
\ No newline at end of file

.idea/misc.xml

+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectRootManager">
+    <output url="file://$PROJECT_DIR$/out" />
+  </component>
+</project>
\ No newline at end of file

.idea/modules.xml

+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectModuleManager">
+    <modules>
+      <module fileurl="file://$PROJECT_DIR$/connection-checker.iml" filepath="$PROJECT_DIR$/connection-checker.iml" />
+      <module fileurl="file://$PROJECT_DIR$/gateway/gateway.iml" filepath="$PROJECT_DIR$/gateway/gateway.iml" />
+    </modules>
+  </component>
+</project>
\ No newline at end of file

.idea/runConfigurations/go_build_connection_checker.xml

+<component name="ProjectRunConfigurationManager">
+  <configuration default="false" name="go build connection-checker" type="GoApplicationRunConfiguration" factoryName="Go Application">
+    <module name="connection-checker" />
+    <working_directory value="$PROJECT_DIR$" />
+    <sudo value="true" />
+    <EXTENSION ID="net.ashald.envfile">
+      <option name="IS_ENABLED" value="false" />
+      <option name="IS_SUBST" value="false" />
+      <option name="IS_PATH_MACRO_SUPPORTED" value="false" />
+      <option name="IS_IGNORE_MISSING_FILES" value="false" />
+      <option name="IS_ENABLE_EXPERIMENTAL_INTEGRATIONS" value="false" />
+      <ENTRIES>
+        <ENTRY IS_ENABLED="true" PARSER="runconfig" />
+      </ENTRIES>
+    </EXTENSION>
+    <kind value="DIRECTORY" />
+    <directory value="$PROJECT_DIR$" />
+    <filePath value="$PROJECT_DIR$" />
+    <method v="2" />
+  </configuration>
+</component>
\ No newline at end of file

.idea/vcs.xml

+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="VcsDirectoryMappings">
+    <mapping directory="" vcs="Git" />
+  </component>
+</project>
\ No newline at end of file

Makefile

+PROJECT_NAME := "connection-checker"
+PKG := "gitlab.schukai.com/oss/utilities/network/connection-checker"
+PKG_LIST := $(shell go list ${PKG}/... )
+GO_FILES := $(shell find . -name '*.go')
+
+GOCMD=go
+GOBUILD=$(GOCMD) build 
+GOCLEAN=$(GOCMD) clean 
+GOTEST=$(GOCMD) test 
+GOVET=$(GOCMD) vet  
+GOGET=$(GOCMD) get 
+GOFMT=$(GOCMD) fmt 
+GODOC=$(GOCMD) fmt 
+GOLINT=golint 
+
+default: help
+
+help:   ## show this help
+	@echo 'usage: make [target] ...'
+	@echo ''
+	@echo 'targets:'
+	@egrep '^(.+)\:\ .*##\ (.+)' ${MAKEFILE_LIST} | sed 's/:.*##/#/' | column -t -c 2 -s '#'
+
+clean:  ## go clean
+	$(GOCLEAN)
+
+clean-all:  ## remove all generated artifacts and clean all build artifacts
+	$(GOCLEAN) -i ./...
+
+lint:   ## run go lint on the source files
+	$(GOLINT) -set_exit_status .
+
+doc:    ## generate godocs and start a local documentation webserver on port 8085
+	godoc -http=:8085 -index
+
+fmt:    ## format the go source files
+	$(GOFMT) .
+
+all:    ## clean, format and build
+	make clean-all
+	make fmt
+	make build
+
+build:
+	mkdir -p bin
+	$(GOCMD) build -o bin/nck 
+	sudo setcap cap_net_raw+ep bin/nck 

README.md

-# connection checker
+# Connection Checker Nck
 
-the connection checker tests the internet connection and displays the status on the console
\ No newline at end of file
+This utility `nck` works similiar to traceroute and  
+allows to record a traceroute.
+
+## Requirements
+
+To execute the traceroute, a privileged port must be opened. this
+requires special permissions.
+
+A prerequisite for reading incoming traffic is being able to either to
+be root or set the executable capability `CAP_NET_RAW`.
+
+Reminder: You can set the `CAP_NET_RAW` capability on an executable like
+this: `sudo setcap cap_net_raw+ep bin/nck`
+
+the connection checker tests the internet connection and displays the status on the console
+
+## Build
+
+Make build uses sudo to set the authorization for the program (see
+Requirements).
+
+```
+make build
+``` 
+
+
+## Run
+
+```bash
+Usage:
+  nck is the way to measure the path to a host.
+
+With this command the path from the localhost to the
+target computer can be recorded and the duration of the
+packet runtimes can be measured. Depending on the IP
+of the destination, either a V4 or V6 measurement is performed.
+
+Application Options:
+  -r, --realtime       show the steps in real time
+  -f, --format=[table] output format, is not valid for real time mode. (default: table)
+  -h, --hops=          maximal hops.
+  -m, --threshold=     from the threshold value in milliseconds the value is marked in red (default: 20)
+
+Help Options:
+  -h, --help           Show this help message
+```

connection-checker.iml

+<?xml version="1.0" encoding="UTF-8"?>
+<module type="WEB_MODULE" version="4">
+  <component name="Go" enabled="true" />
+  <component name="NewModuleRootManager" inherit-compiler-output="true">
+    <exclude-output />
+    <content url="file://$MODULE_DIR$" />
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+  </component>
+</module>
\ No newline at end of file

go.mod

+module gitlab.schukai.com/oss/utilities/network/connection-checker
+
+go 1.16
+
+require (
+	github.com/fatih/color v1.11.0
+	github.com/jessevdk/go-flags v1.5.0
+	github.com/mattn/go-runewidth v0.0.12 // indirect
+	github.com/olekukonko/tablewriter v0.0.5
+	github.com/rivo/uniseg v0.2.0 // indirect
+	gitlab.schukai.com/oss/libraries/go/network/traceroute v1.0.0
+	golang.org/x/sys v0.0.0-20210514084401-e8d321eab015 // indirect
+)

go.sum

+github.com/creasty/defaults v1.5.1 h1:j8WexcS3d/t4ZmllX4GEkl4wIB/trOr035ajcLHCISM=
+github.com/creasty/defaults v1.5.1/go.mod h1:FPZ+Y0WNrbqOVw+c6av63eyHUAl6pMHZwqLPvXUZGfY=
+github.com/fatih/color v1.11.0 h1:l4iX0RqNnx/pU7rY2DB/I+znuYY0K3x6Ywac6EIr0PA=
+github.com/fatih/color v1.11.0/go.mod h1:ELkj/draVOlAH/xkhN6mQ50Qd0MPOk5AAr3maGEBuJM=
+github.com/jackpal/gateway v1.0.7 h1:7tIFeCGmpyrMx9qvT0EgYUi7cxVW48a0mMvnIL17bPM=
+github.com/jackpal/gateway v1.0.7/go.mod h1:aRcO0UFKt+MgIZmRmvOmnejdDT4Y1DNiNOsSd1AcIbA=
+github.com/jessevdk/go-flags v1.5.0 h1:1jKYvbxEjfUl0fmqTCOfonvskHHXMjBySTLW4y9LFvc=
+github.com/jessevdk/go-flags v1.5.0/go.mod h1:Fw0T6WPc1dYxT4mKEZRfG5kJhaTDP9pj1c2EWnYs/m4=
+github.com/mattn/go-colorable v0.1.8 h1:c1ghPdyEDarC70ftn0y+A/Ee++9zz8ljHG1b13eJ0s8=
+github.com/mattn/go-colorable v0.1.8/go.mod h1:u6P/XSegPjTcexA+o6vUJrdnUu04hMope9wVRipJSqc=
+github.com/mattn/go-isatty v0.0.12 h1:wuysRhFDzyxgEmMf5xjvJ2M9dZoWAXNNr5LSBS7uHXY=
+github.com/mattn/go-isatty v0.0.12/go.mod h1:cbi8OIDigv2wuxKPP5vlRcQ1OAZbq2CE4Kysco4FUpU=
+github.com/mattn/go-runewidth v0.0.9 h1:Lm995f3rfxdpd6TSmuVCHVb/QhupuXlYr8sCI/QdE+0=
+github.com/mattn/go-runewidth v0.0.9/go.mod h1:H031xJmbD/WCDINGzjvQ9THkh0rPKHF+m2gUSrubnMI=
+github.com/mattn/go-runewidth v0.0.12 h1:Y41i/hVW3Pgwr8gV+J23B9YEY0zxjptBuCWEaxmAOow=
+github.com/mattn/go-runewidth v0.0.12/go.mod h1:RAqKPSqVFrSLVXbA8x7dzmKdmGzieGRCM46jaSJTDAk=
+github.com/olekukonko/tablewriter v0.0.5 h1:P2Ga83D34wi1o9J6Wh1mRuqd4mF/x/lgBS7N7AbDhec=
+github.com/olekukonko/tablewriter v0.0.5/go.mod h1:hPp6KlRPjbx+hW8ykQs1w3UBbZlj6HuIJcUGPhkA7kY=
+github.com/rivo/uniseg v0.1.0/go.mod h1:J6wj4VEh+S6ZtnVlnTBMWIodfgj8LQOQFoIToxlJtxc=
+github.com/rivo/uniseg v0.2.0 h1:S1pD9weZBuJdFmowNwbpi7BJ8TNftyUImj/0WQi72jY=
+github.com/rivo/uniseg v0.2.0/go.mod h1:J6wj4VEh+S6ZtnVlnTBMWIodfgj8LQOQFoIToxlJtxc=
+gitlab.schukai.com/oss/libraries/go/network/traceroute v0.0.0-20210515170318-b9fafad6e994 h1:On/ql5GyUkvKGyhHU9dmEek6L+qhcoHdh0uE1SIn0lA=
+gitlab.schukai.com/oss/libraries/go/network/traceroute v0.0.0-20210515170318-b9fafad6e994/go.mod h1:i8zDawbOZ1d6p7iIN/md3yMNreZ5gGuLlQtSRGo17VY=
+gitlab.schukai.com/oss/libraries/go/network/traceroute v0.0.0-20210516184908-c276f482ab77 h1:Sfgyw8eg8uDA28TUl/HF6ktSucGYPmLemnQgVVJzcZ8=
+gitlab.schukai.com/oss/libraries/go/network/traceroute v0.0.0-20210516184908-c276f482ab77/go.mod h1:i8zDawbOZ1d6p7iIN/md3yMNreZ5gGuLlQtSRGo17VY=
+gitlab.schukai.com/oss/libraries/go/network/traceroute v1.0.0 h1:abu2nCfgmn3RjkWS+IinUtHo/1RQ2yebJ5ZeVuykRpQ=
+gitlab.schukai.com/oss/libraries/go/network/traceroute v1.0.0/go.mod h1:i8zDawbOZ1d6p7iIN/md3yMNreZ5gGuLlQtSRGo17VY=
+golang.org/x/net v0.0.0-20210510120150-4163338589ed h1:p9UgmWI9wKpfYmgaV/IZKGdXc5qEK45tDwwwDyjS26I=
+golang.org/x/net v0.0.0-20210510120150-4163338589ed/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y=
+golang.org/x/sys v0.0.0-20200116001909-b77594299b42/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20200223170610-d5e6a3e2c0ae/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20210320140829-1e4c9ba3b0c4/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20210423082822-04245dca01da/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20210510120138-977fb7262007 h1:gG67DSER+11cZvqIMb8S8bt0vZtiN6xWYARwirrOSfE=
+golang.org/x/sys v0.0.0-20210510120138-977fb7262007/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.0.0-20210514084401-e8d321eab015 h1:hZR0X1kPW+nwyJ9xRxqZk1vx5RUObAPBdKVvXPDUH/E=
+golang.org/x/sys v0.0.0-20210514084401-e8d321eab015/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
+golang.org/x/text v0.3.6/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
+golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=

main.go

+package main
+
+import (
+	"errors"
+	"fmt"
+	"github.com/fatih/color"
+	"github.com/jessevdk/go-flags"
+	"github.com/olekukonko/tablewriter"
+	"gitlab.schukai.com/oss/libraries/go/network/traceroute"
+	"os"
+	"strconv"
+	"time"
+)
+
+const (
+	exitOK    = 0  /* successful termination */
+	exitUsage = 64 /* command line usage error */
+	exitIOErr = 74 /* input/output error */
+)
+
+var opts struct {
+	Realtime  bool   `long:"realtime" short:"r" description:"show the steps in real time"`
+	Format    string `long:"format" short:"f" description:"output format, is not valid for real time mode." choice:"table" default:"table"`
+	Hops      int    `long:"hops" short:"h" description:"maximal hops."`
+	Threshold int    `long:"threshold" short:"m" description:"from the threshold value in milliseconds the value is marked in red" default:"20"`
+}
+
+var parser *flags.Parser
+
+func round(d time.Duration, digits int) time.Duration {
+
+	var divs = []time.Duration{
+		time.Duration(1), time.Duration(10), time.Duration(100), time.Duration(1000)}
+
+	switch {
+	case d > time.Second:
+		d = d.Round(time.Second / divs[digits])
+	case d > time.Millisecond:
+		d = d.Round(time.Millisecond / divs[digits])
+	case d > time.Microsecond:
+		d = d.Round(time.Microsecond / divs[digits])
+	}
+	return d
+}
+
+func printAsTable(result traceroute.Results) {
+
+	table := tablewriter.NewWriter(os.Stdout)
+	table.SetHeader([]string{"#", "host", "time"})
+	table.SetColumnAlignment([]int{tablewriter.ALIGN_RIGHT, tablewriter.ALIGN_LEFT, tablewriter.ALIGN_RIGHT})
+
+	table.NumLines()
+	table.SetBorders(tablewriter.Border{
+		Left:   false,
+		Right:  false,
+		Top:    false,
+		Bottom: false,
+	})
+
+	d := time.Duration(opts.Threshold)
+	marker := d * time.Millisecond
+
+	for _, i := range result.Hops {
+
+		r := []string{
+			strconv.FormatInt(int64(i.Hop), 10),
+			i.Station,
+			fmt.Sprintf("%s", round(i.Latency, 3))}
+
+		if i.Latency > marker {
+			table.Rich(r, []tablewriter.Colors{tablewriter.Colors{}, tablewriter.Colors{}, tablewriter.Colors{tablewriter.Bold, tablewriter.FgRedColor}})
+		} else {
+			table.Append(r)
+		}
+
+	}
+
+	table.Render() // Send output
+
+}
+
+func printErrorAndExit(err error, exitcode int) {
+
+	out := color.New(color.FgRed).Add(color.Underline)
+
+	fmt.Println()
+	out.Println(err.Error())
+
+	fmt.Println()
+	parser.WriteHelp(os.Stdout)
+	fmt.Println()
+	os.Exit(exitcode)
+}
+
+func main() {
+
+	parser = flags.NewParser(&opts, flags.HelpFlag|flags.PrintErrors)
+	parser.Usage = "is the way to measure the path to a host."
+	parser.ShortDescription = "Traceroute to host."
+	parser.LongDescription = "With this command the path from the localhost to the\n" +
+		"target computer can be recorded and the duration of the\n" +
+		"packet runtimes can be measured. Depending on the IP\n" +
+		"of the destination, either a V4 or V6 measurement is performed."
+
+	args, err := parser.Parse()
+
+	if len(args) != 1 || args[0] == "" {
+		printErrorAndExit(errors.New("the required `host' was not specified"), exitUsage)
+	}
+
+	session, err := traceroute.NewSession(args[0])
+	if err != nil {
+		printErrorAndExit(err, exitIOErr)
+		return
+	}
+
+	if opts.Hops > 0 {
+		session.MaxHops = opts.Hops
+	}
+
+	if opts.Realtime {
+		session.CallBack = func(result traceroute.Result) {
+			if result.Err != nil {
+				fmt.Printf("%v\t%s\t\t\t\t%v\t\t(%s)\n", result.Hop, result.Station, result.Latency, result.Err.Error())
+				return
+			}
+
+			fmt.Printf("%v\t%s\t\t\t%v\n", result.Hop, result.Station, result.Latency)
+		}
+	}
+
+	results, err := session.TraceRoute()
+
+	if err != nil {
+		printErrorAndExit(err, exitIOErr)
+	}
+
+	if opts.Realtime {
+		os.Exit(exitOK)
+	}
+	
+	switch opts.Format {
+	case "table":
+		printAsTable(*results)
+	default:
+		printErrorAndExit(errors.New("unsupported format"), exitUsage)
+	}
+
+	os.Exit(exitOK)
+}