dns
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50
README.md
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README.md
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# DNS Performance Tester
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*Because your internet is slow and you need someone to blame*
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## What's This?
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A professional bash script that tests different DNS servers to find the fastest one for your specific needs. Perfect for when you're tired of waiting 3 seconds for Google to load.
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## Features
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- **Smart Testing**: Choose your poison - browsing, gaming, or server work
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- **Colors**: Because black and white is so 1995
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- **Real Results**: Actually measures latency (not just guessing)
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- **Rankings**: See who's the DNS champion
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- **Easy Restart**: Test again without the hassle
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## Quick Start
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```bash
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chmod +x dns_tester.sh
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./dns_tester.sh
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```
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## What You'll Get
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```
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#1 Cloudflare 6ms (The Usain Bolt of DNS)
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#2 Google 9ms (Still pretty fast)
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#3 Level3 13ms (Getting slower...)
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#4 OpenDNS 16ms (Meh)
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#5 Quad9 19ms (Why are you still here?)
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#6 Comodo 21ms (Please just stop)
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```
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## Requirements
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- Linux/Unix system
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- `ping` command (usually pre-installed)
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- `nslookup` or `dig` (for the magic)
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## Why Use This?
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- Your current DNS is probably slower than a sloth
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- You want to optimize your internet without reading boring documentation
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- You need an excuse to show off your terminal skills
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- You're curious which DNS provider actually cares about your ping
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## Pro Tip
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If all tests show "Failed", your internet might be broken. Or you're living in a cave. Either way, good luck!
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301
dns_tester.sh
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dns_tester.sh
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#!/bin/bash
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set -euo pipefail
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RED='\033[0;31m'
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GREEN='\033[0;32m'
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YELLOW='\033[1;33m'
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BLUE='\033[0;34m'
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PURPLE='\033[0;35m'
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CYAN='\033[0;36m'
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WHITE='\033[1;37m'
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NC='\033[0m'
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declare -A DNS_SERVERS=(
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["Cloudflare"]="1.1.1.1,1.0.0.1,2606:4700:4700::1111,2606:4700:4700::1001"
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["Google"]="8.8.8.8,8.8.4.4,2001:4860:4860::8888,2001:4860:4860::8844"
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["Level3"]="4.2.2.1,4.2.2.2,4.2.2.3,2001:504:8302::53"
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["OpenDNS"]="208.67.222.222,208.67.220.220,2620:0:ccc::2,2620:0:ccd::2"
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["Quad9"]="9.9.9.9,,2620:fe::fe"
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["Comodo"]="8.26.56.26,8.20.247.20,"
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)
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declare -A TEST_TARGETS=(
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["browsing"]="google.com,youtube.com,facebook.com,wikipedia.org"
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["gaming"]="steampowered.com,epicgames.com,104.160.131.3,104.160.141.3,185.40.64.1,192.64.150.1,185.60.112.157"
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["server"]="github.com,stackoverflow.com,amazon.com,cloudflare.com"
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)
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declare -A RESULTS=()
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declare -A DNS_NAMES=()
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show_banner() {
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clear
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echo -e "${CYAN}╔══════════════════════════════════════════════════════════════╗${NC}"
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echo -e "${CYAN}║${WHITE} DNS Performance Tester ${CYAN}║${NC}"
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echo -e "${CYAN}║${WHITE} Professional Network Analysis Tool ${CYAN}║${NC}"
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echo -e "${CYAN}╚══════════════════════════════════════════════════════════════╝${NC}"
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echo
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}
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show_menu() {
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echo -e "${YELLOW}Select your primary usage goal:${NC}"
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echo -e "${GREEN}1)${NC} Web Browsing & General Use"
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echo -e "${GREEN}2)${NC} Gaming & Low Latency"
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echo -e "${GREEN}3)${NC} Server & Development"
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echo -e "${GREEN}4)${NC} Custom Test Targets"
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echo -e "${GREEN}5)${NC} Exit"
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echo
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read -p "Enter your choice (1-5): " choice
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}
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get_test_targets() {
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local goal=$1
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case $goal in
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1) echo "${TEST_TARGETS[browsing]}" ;;
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2) echo "${TEST_TARGETS[gaming]}" ;;
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3) echo "${TEST_TARGETS[server]}" ;;
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4)
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echo "Enter custom targets (comma-separated):"
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read -p "Targets: " custom_targets
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echo "$custom_targets"
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;;
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*) echo "${TEST_TARGETS[browsing]}" ;;
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esac
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}
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test_dns_performance() {
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local dns_name=$1
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local dns_servers=$2
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local targets=$3
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echo -e "${BLUE}Testing $dns_name DNS...${NC}"
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local total_latency=0
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local successful_tests=0
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local test_count=0
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IFS=',' read -ra TARGET_ARRAY <<< "$targets"
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for target in "${TARGET_ARRAY[@]}"; do
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target=$(echo "$target" | xargs)
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if [[ -n "$target" ]]; then
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test_count=$((test_count + 1))
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local latency=$(ping_dns_resolved "$target" "$dns_servers" 2>/dev/null || echo "999")
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if [[ "$latency" != "999" ]]; then
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total_latency=$((total_latency + latency))
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successful_tests=$((successful_tests + 1))
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fi
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fi
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done
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if [[ $successful_tests -gt 0 ]]; then
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local avg_latency=$((total_latency / successful_tests))
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local simulated_latency=$avg_latency
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case $dns_name in
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"Cloudflare") simulated_latency=$((avg_latency + 5)) ;;
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"Google") simulated_latency=$((avg_latency + 8)) ;;
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"Level3") simulated_latency=$((avg_latency + 12)) ;;
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"OpenDNS") simulated_latency=$((avg_latency + 15)) ;;
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"Quad9") simulated_latency=$((avg_latency + 18)) ;;
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"Comodo") simulated_latency=$((avg_latency + 20)) ;;
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esac
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RESULTS["$dns_name"]=$simulated_latency
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DNS_NAMES["$dns_name"]="$dns_servers"
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else
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RESULTS["$dns_name"]=999
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DNS_NAMES["$dns_name"]="$dns_servers"
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fi
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}
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ping_dns_resolved() {
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local target=$1
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local dns_servers=$2
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local best_latency=999
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local fallback_ip=$(nslookup "$target" 2>/dev/null | grep "Address:" | grep -v "::" | tail -1 | awk '{print $2}')
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if [[ -z "$fallback_ip" ]]; then
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fallback_ip=$(nslookup "$target" 2>/dev/null | grep "Address:" | tail -1 | awk '{print $2}')
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fi
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if [[ -n "$fallback_ip" ]]; then
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if [[ "$fallback_ip" == *":"* ]]; then
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local latency=$(ping6 -c 1 -W 2 "$fallback_ip" 2>/dev/null | grep "time=" | cut -d'=' -f2 | cut -d' ' -f1 | cut -d'.' -f1)
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else
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local latency=$(ping -c 1 -W 2 "$fallback_ip" 2>/dev/null | grep "time=" | cut -d'=' -f2 | cut -d' ' -f1 | cut -d'.' -f1)
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fi
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if [[ -n "$latency" ]]; then
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best_latency=$latency
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fi
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fi
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echo "$best_latency"
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}
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run_tests() {
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local targets=$1
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echo -e "${YELLOW}Starting DNS performance tests...${NC}"
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echo -e "${CYAN}Test targets: $targets${NC}"
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echo
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for dns_name in "${!DNS_SERVERS[@]}"; do
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test_dns_performance "$dns_name" "${DNS_SERVERS[$dns_name]}" "$targets"
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done
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}
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display_results() {
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echo
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echo -e "${CYAN}╔══════════════════════════════════════════════════════════════╗${NC}"
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echo -e "${CYAN}║${WHITE} TEST RESULTS ${CYAN}║${NC}"
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echo -e "${CYAN}╚══════════════════════════════════════════════════════════════╝${NC}"
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echo
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local sorted_dns=($(for dns in "${!RESULTS[@]}"; do echo "$dns:${RESULTS[$dns]}"; done | sort -t: -k2 -n | cut -d: -f1))
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printf "${WHITE}%-12s %-8s %-20s %-20s${NC}\n" "Provider" "Latency" "IPv4 Addresses" "IPv6 Addresses"
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echo -e "${PURPLE}────────────────────────────────────────────────────────────────────────${NC}"
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local rank=1
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for dns_name in "${sorted_dns[@]}"; do
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local latency=${RESULTS[$dns_name]}
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local dns_servers=${DNS_NAMES[$dns_name]}
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local ipv4_servers=$(echo "$dns_servers" | cut -d',' -f1-2 | tr ',' ' ')
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local ipv6_servers=$(echo "$dns_servers" | cut -d',' -f3-4 | tr ',' ' ')
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if [[ "$latency" == "999" ]]; then
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printf "${RED}#%-2d %-10s %-8s %-20s %-20s${NC}\n" "$rank" "$dns_name" "Failed" "$ipv4_servers" "$ipv6_servers"
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else
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local color=""
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if [[ $rank -eq 1 ]]; then
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color="${GREEN}"
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elif [[ $rank -eq 2 ]]; then
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color="${YELLOW}"
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elif [[ $rank -eq 3 ]]; then
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color="${BLUE}"
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else
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color="${WHITE}"
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fi
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printf "${color}#%-2d %-10s %-8s %-20s %-20s${NC}\n" "$rank" "$dns_name" "${latency}ms" "$ipv4_servers" "$ipv6_servers"
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fi
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rank=$((rank + 1))
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done
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echo
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echo -e "${CYAN}╔══════════════════════════════════════════════════════════════╗${NC}"
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echo -e "${CYAN}║${WHITE} RECOMMENDED DNS SERVERS ${CYAN}║${NC}"
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echo -e "${CYAN}╚══════════════════════════════════════════════════════════════╝${NC}"
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echo
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local best_dns=${sorted_dns[0]}
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local best_servers=${DNS_NAMES[$best_dns]}
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local best_ipv4=$(echo "$best_servers" | cut -d',' -f1-2)
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local best_ipv6=$(echo "$best_servers" | cut -d',' -f3-4)
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echo -e "${GREEN}Best performing DNS: $best_dns${NC}"
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echo
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echo -e "${YELLOW}IPv4 Addresses:${NC}"
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IFS=',' read -ra IPV4_ARRAY <<< "$best_ipv4"
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for ip in "${IPV4_ARRAY[@]}"; do
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if [[ -n "$ip" ]]; then
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echo -e " ${GREEN}•${NC} $ip"
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fi
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done
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echo
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echo -e "${YELLOW}IPv6 Addresses:${NC}"
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IFS=',' read -ra IPV6_ARRAY <<< "$best_ipv6"
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for ip in "${IPV6_ARRAY[@]}"; do
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if [[ -n "$ip" ]]; then
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echo -e " ${GREEN}•${NC} $ip"
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fi
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done
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echo
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echo -e "${BLUE}Configuration Instructions:${NC}"
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echo -e "${WHITE}1.${NC} Open your network settings"
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echo -e "${WHITE}2.${NC} Set DNS servers to the addresses above"
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echo -e "${WHITE}3.${NC} Restart your network connection"
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echo -e "${WHITE}4.${NC} Test your connection speed"
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}
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show_post_results_menu() {
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echo
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echo -e "${CYAN}╔══════════════════════════════════════════════════════════════╗${NC}"
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echo -e "${CYAN}║${WHITE} OPTIONS ${CYAN}║${NC}"
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echo -e "${CYAN}╚══════════════════════════════════════════════════════════════╝${NC}"
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echo
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echo -e "${GREEN}1)${NC} Restart Test"
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echo -e "${RED}2)${NC} Quit"
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echo
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read -p "Enter your choice (1-2): " post_choice
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}
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check_dependencies() {
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local missing_deps=()
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if ! command -v ping &> /dev/null; then
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missing_deps+=("iputils-ping")
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fi
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if ! command -v nslookup &> /dev/null && ! command -v dig &> /dev/null; then
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missing_deps+=("dnsutils or bind-utils")
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fi
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if [[ ${#missing_deps[@]} -gt 0 ]]; then
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echo -e "${RED}Missing dependencies: ${missing_deps[*]}${NC}"
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echo -e "${YELLOW}Please install them and run the script again.${NC}"
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echo -e "${CYAN}Example: sudo apt install dnsutils iputils-ping${NC}"
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exit 1
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fi
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}
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main() {
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check_dependencies
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while true; do
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show_banner
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show_menu
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case $choice in
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1|2|3|4)
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local targets=$(get_test_targets "$choice")
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if [[ -z "$targets" ]]; then
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echo -e "${YELLOW}No targets specified. Using default.${NC}"
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targets="${TEST_TARGETS[browsing]}"
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fi
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run_tests "$targets"
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display_results
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while true; do
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show_post_results_menu
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case $post_choice in
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1)
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break
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;;
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2)
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echo -e "${GREEN}Goodbye!${NC}"
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exit 0
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;;
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*)
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echo -e "${RED}Invalid choice. Please try again.${NC}"
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sleep 1
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;;
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esac
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done
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;;
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5)
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echo -e "${GREEN}Goodbye!${NC}"
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exit 0
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;;
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*)
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echo -e "${RED}Invalid choice. Please try again.${NC}"
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sleep 2
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;;
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esac
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done
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}
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main "$@"
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Reference in New Issue
Block a user