How To Make A Proxy Checker In Python

Some of the widespread use cases of proxies are:

Some proxies don’t work due to several limitations. When you try to connect to the Internet, you get a timeout message. It is because the proxies are either too slow or don’t exist. Here comes the need for a proxy checker. You can save time by using a proxy checker to test your proxies. It helps you scan the proxies in bulk. When you use free proxies, you should know they shut down without a moment’s choice. Therefore, you have to keep your proxy checker handy. You will have to use it daily to check which proxies are working. 

Below are some tips you need to follow to use a proxy checker. 

Let’s see how we can make a proxy checker in Python with the help of the below steps.

You need to import the following two libraries i-e.,

import urllib.request , socket
socket.setdefaulttimeout(180)

proxyList = ['140.82.61.218:8080']

The above line of code represents a sample proxy IP.

To check whether your proxies are working or not, you have to define a function as shown below.

def is_bad_proxy(pip):    
    try:        
        proxy_handler = urllib.request.ProxyHandler({'http': pip})        
        opener = urllib.request.build_opener(proxy_handler)
        opener.addheaders = [('User-agent', 'Mozilla/5.0')]
        urllib.request.install_opener(opener)        
        sock=urllib.request.urlopen('http://www.google.com')  
    except urllib.error.HTTPError as e:        
        print('Error code: ', e.code)
        return e.code
    except Exception as detail:

        print( "ERROR:", detail)
        return 1
    return 0

Here,

for item in proxyList:
    if is_bad_proxy(item):
        print ("Bad Proxy", item)
    else:
        print (item, "is working")

In the above code, the for loop iterates over the proxyList. We get a “Bad proxy” result if the proxy is not functional. 

There are many uses for a proxy checker. Some of them are given below.

A dedicated datacenter proxy has several features, such as unlimited bandwidth and concurrent connections, dedicated HTTP proxies for easy communication, and IP authentication for more security. With 99.9% uptime, you can rest assured that the dedicated datacenter will always work during any session. Last but not least, ProxyScrape provides excellent customer service and will help you to resolve your issue within 24-48 business hours. 

Apart from that, the other features of a residential proxy are: unlimited bandwidth, along with concurrent connection, dedicated HTTP/s proxies, proxies at any time session because of 7 million plus proxies in the proxy pool, username and password authentication for more security, and last but not least, the ability to change the country server. You can select your desired server by appending the country code to the username authentication. 

Next, the best thing would be to change the proxy server based on the country. You must append the country ISO_CODE at the end of the IP authentication or username and password authentication. 

I hope you got to know how to make a proxy checker in Python.