HOWTO: using telnet to make HTTP request

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Telnet is an old utility used in local network to offer a bidirectional communication text-oriented using a terminal. Can be used also to make an http call to a remote server with the purpose of testing. Let’s see how:

  1. Open you favorite terminal
  2. Type (instead of diegor.it you can choose whatever server you want)

    $ telnet diegor.it 80
    

    and you should have as output:

    Trying 75.119.192.123...  
    Connected to diegor.it.  
    Escape character is '^]'.
    
  3. Now type:

    GET / HTTP/1.1  
    host: diegor.it
    

    where “/” is the remote path. In this case we want the root. The output looks like this below:

    HTTP/1.1 200 OK  
    Date: Mon, 13 Jun 2011 09:06:43 GMT  
    Server: Apache  
    Cache-Control: no-cache, must-revalidate, max-age=0  
    Pragma: no-cache  
    Expires: Wed, 11 Jan 1984 05:00:00 GMT  
    Last-Modified: Sun, 12 Jun 2011 13:29:48 GMT  
    Vary: Accept-Encoding  
    Content-Length: 85589  
    Content-Type: text/html;charset=UTF-8
    ...
    

Pretty simple! Any questions or comments are welcome.


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