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connect to Whois server via proxy  and proxy chaining

Posted on 2006-07-07
Medium Priority
Last Modified: 2012-06-27
Hello experts
My first question here :)
The following code from
Should  get the continent of a page via proxy  ( I have not tried but it should be fine )
function proxy_url($proxy_url)
   $proxy_name = '';
   $proxy_port = 4001;
   $proxy_user = "user";    // added
   $proxy_pass = "password";    // added
   $proxy_cont = '';

   $proxy_fp = fsockopen($proxy_name, $proxy_port);
   if (!$proxy_fp)    {return false;}
   fputs($proxy_fp, "GET $proxy_url HTTP/1.0\r\nHost: $proxy_name\r\n");
   fputs($proxy_fp, "Proxy-Authorization: Basic " . base64_encode ("$proxy_user:$proxy_pass") . "\r\n\r\n");    // added
   while(!feof($proxy_fp)) {$proxy_cont .= fread($proxy_fp,4096);}
   $proxy_cont = substr($proxy_cont, strpos($proxy_cont,"\r\n\r\n")+4);
   return $proxy_cont;

The following code from
 ( I have not tried but it should be fine )

function lookup($lookup){  
            $whois = "whois.geektools.com";  
            $fp = fsockopen($whois, 43, &$errno, &$errstr, 30);  
            if (!$fp){  
                printf("Error: %s (%s)", $errstr, $errno);  
                $data = 0;  
            } else {  
                $lookup .= "\n";  
                fputs($fp, $lookup);  
                $data = fread( $fp, 16384 );  
            return $data;  

should connect to whois and gives the whois result ( I have not tried but it should be fine )

Now my questions
say I have two proxy servers

1-How to connect to whois server via proxy ( the script connects to proxy1 then proxy1 connect to the whois server and get the result )
2- How to do proxy chaining  ( the script connect to proxy1 then proxy1 connects to proxy2 then get the result from msn.com  for example )
3- How to do proxy chaining to connect to whois server ( the script connect to proxy1 then proxy1 connects to proxy2 then get the result from whois server  )

Please provide complete code
Thank you in advance
Question by:honestman31
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LVL 10

Author Comment

ID: 17066680
Hello experts .
Are my questions difficult or do you need more clarification ?
Please let me know
LVL 24

Expert Comment

ID: 17078692
Proxy chaining is more of a network issue then PHP issue.  So if you are doing [ workstation --> proxy1 --> proxy2 --> Web Server ] connection, you need to setup the proxy chain from proxy1 --> proxy2 first.  There is nothing to do with the PHP script.
LVL 10

Author Comment

ID: 17078833
slyong ,
Do you mean Proxy chaining  cannot be done in PHP ?
Also what about connecting to whois via proxy ? cannot be done in PHP too?
Thank you
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LVL 24

Expert Comment

ID: 17079227

Yes proxy chaining is not to be done on PHP, it can be done in PHP but it is a huge proxy hacking through sockets and things like that.  There is a PHP proxy implementation here: http://sourceforge.net/project/showfiles.php?group_id=52440.  You can also do use other proxy chaining tools like:


To connect to whois via proxy can be done in PHP with Curl extension:

The code example can be found here http://au2.php.net/manual/en/ref.curl.php
LVL 29

Expert Comment

ID: 17079925
What OS are you using?
LVL 10

Author Comment

ID: 17080065
I use windows xp sp2 ( PHP Version 4.3.11 )
and also I have shared hosting uses linux (PHP Version 4.4.2)
LVL 29

Expert Comment

ID: 17080100
I was asking, because it might be easier to use an external program (like whois on linux).
If you call it with exec() in PHP you can 'catch' the output for use in your PHP script
LVL 10

Author Comment

ID: 17080166
I cannot install any program on my shared hosting.
My problem is that I provide whois look up in my site after some queries the whois server will block the server IP for a one day  , So I was thinking to query whois via proxies . and even I want to make it more efficient by using  proxy chaining

Accepted Solution

smackadoo earned 2000 total points
ID: 17201969
of course they will block your server ip.
People running whoiservers pay to run their whois queries and don't allow people to hijack their websites, sucking their bandwidth so you can show it to users on your site (probably making money by showing ads aswell)

Instead of showing their information on your pages, link to their site where they can see the information on their pages.

I'd expect if the whois sites spotted you were abusing their webpages by proxy or by other means, some of them have been known to send a lawyers letter with a bill for all the bandwidth you have used) (eg DnsStuff.com)
LVL 29

Expert Comment

ID: 17202184
Good point :)
LVL 10

Author Comment

ID: 17371227
I have not accepted this answer nor I recieved a notification of the Administrative Comment  dated  08/19/2006 11:45AM PDT,

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