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RTT for all hostname ips
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| #!/bin/bash | |
| # Useful for checking rtt to any sotname of interest. | |
| # Since servers usually have balancers or dns balancing is in place it is helpful to test every ip. | |
| IPS=$(host $1 | grep "has address" | awk '{ print $4 }') | |
| REQ_AMOUNT=${2:-5} | |
| # Loop through each IP address | |
| for IP in $IPS; do | |
| # Get the city information for the IP address - take the second occurrence of "City:" | |
| CITY=$(whois $IP | grep "City:" | head -2 | tail -1 | awk '{ print $2 }') | |
| # Initialize total time | |
| TOTAL_TIME=0 | |
| # Repeat GET request 10 times | |
| for ((i=0; i<$REQ_AMOUNT; i++)); do | |
| # Perform GET request and measure time in seconds | |
| TIME=$(curl -o /dev/null -s -w '%{time_total}\n' --connect-timeout 5 http://$IP) | |
| echo "${TIME}ms" | |
| # Add time to total time | |
| TOTAL_TIME=$(echo "$TOTAL_TIME + $TIME" | bc) | |
| done | |
| # Calculate average time in seconds | |
| AVG_TIME=$(echo "scale=2; $TOTAL_TIME / $REQ_AMOUNT" | bc) | |
| # Convert average time to milliseconds | |
| AVG_TIME_MS=$(echo "$AVG_TIME * 1000" | bc) | |
| # Print the IP, its corresponding city, and the average response time | |
| echo "IP: $IP, City: $CITY, Avg Time: ${AVG_TIME_MS}ms" | |
| done | |
| # USAGE: | |
| # ./rt.sh hostname.com | |
| # ./rt.sh hostname.com req_amount | |
| # EXAMPLE: | |
| # ./rt.sh google.com 5 |
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