HTTP代理检查器

Posted 2021-02-26

This script tries to detect whether an HTTP Proxy works or not. It uses the HEAD command (high-level version of the lwp-request command) to connect to a given URL (http://www.google.com by default) via the given HTTP Proxy.
It takes 2 arguments; the first one is the IP Address or URL of the HTTP Proxy and the second one is its port number.
If you have a simpler or faster method, please let me know.

#!/bin/bash
# HTTP Proxy Server's IP Address (or URL)
proxy_server=$1
 
# HTTP Proxy Server's Port Number
port=$2
 
# We're trying to reach this url via the given HTTP Proxy Server
# (http://www.google.com by default)
url="http://www.google.com"
 
# Timeout time (in seconds)
timeout=20
 
# We're fetching the return code and assigning it to the $result variable
result=`HEAD -d -p http://$proxy_server:$port -t $timeout $url`
 
# If the return code is 200, we've reached to $url successfully
if [ "$result" = "200 OK" ]; then
    echo "1 (proxy works)"
# Otherwise, we've got a problem (either the HTTP Proxy Server does not work
# or the request timed out)
else
    echo "0 (proxy does not work or request timed out)"
fi