Check if IP/IP:Port is web port

is_web.sh

#!/usr/bin/env bash


if [[ "$1" = '-h' ]] || [[ "$1" = '--help' ]] || [[ -z "$1" ]]; then
    echo "Specify an IP:port to check if it's web and what protocol"
    echo "this first checks https then http"
    echo
    echo "Example: $0 1.1.1.1:3040"
    echo "or"
    echo "Example: $0 1.1.1.1"
    exit 1
else
    TARGET_IP_PORT=${1}

    if curl -m 3 -v -k https://${TARGET_IP_PORT} &> /dev/null; then
        echo https://${TARGET_IP_PORT} is good
        exit
    fi

    if curl -m 3 -v -k http://${TARGET_IP_PORT} &> /dev/null; then
        echo http://${TARGET_IP_PORT} is good
        exit
    fi
fi