Using proxy with file_get_contents

Question

I am getting data for my application from a website, say x.com. I use the php function file_get_contents() to fetch the data. It is sure that , my server's ip address will be shown in x.com 's logs. Is there any way to hide my server's ip without using proxy?

If I have a proxy ,how to use it with file_get_contents() ?

I need to send the request in both HTTP POST and HTTP GET methods

file_get_contents take a param stream_or_context with it you can put your proxy into it see this http://www.php.net/manual/en/context.http.php — farmer1992, Jan 26 '13 at 08:32
i tried that ,but i got the following error that the content length is not specified .So I gave the arguments content length and offset .But still it is not working . — Jinu Joseph Daniel, Jan 26 '13 at 08:34
the server side always know your ip or it cant exchange data with you (i mean http). in some case you can put a header like X-Forward-For: `fakeip` to tell server your fakeip, however the server side would determine which ip to use — farmer1992, Jan 26 '13 at 08:34

score 22 · Accepted Answer · answered Jan 26 '13 at 08:46

22

test.php using http://ifconfig.me/ip

code modified from http://www.php.net/manual/en/function.file-get-contents.php

<?php

// Create a stream
$opts = array(
        'http'=>array(
            'method'=>"GET",
            'header'=>"Accept-language: en\r\n" .
            "Cookie: foo=bar\r\n",
            'proxy' => 'tcp://221.176.14.72:80',
            )
);

$context = stream_context_create($opts);

// Open the file using the HTTP headers set above
$file = file_get_contents('http://ifconfig.me/ip', false, $context);

var_dump($file);

answered Jan 26 '13 at 08:46

farmer1992

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Thanks a lot..It is working..For post request I have to provide content type and length, right? – Jinu Joseph Daniel Jan 26 '13 at 08:59
using post http://stackoverflow.com/questions/2445276/how-to-post-data-in-php-using-file-get-contents – farmer1992 Jan 26 '13 at 09:00
I tested it on my server..and requested for a file on the same server and checked the logs..In the logs my server's ip is visible :( – Jinu Joseph Daniel Jan 26 '13 at 09:03
1

it seems that proxy server added your ip to X-Forward-For and your server used it – farmer1992 Jan 26 '13 at 09:08
any way to override?..:) is there an alternate way? :( – Jinu Joseph Daniel Jan 26 '13 at 09:36
1

hiding based on how your server side read your ip. you can make a customized way if you know it – farmer1992 Jan 26 '13 at 09:40

Jon Weers · Answer 2 · 2017-06-27T14:21:22.840

Definitely agree with farmer1992.

For anyone having issues with file_get_contents over SSL + proxy, there is a known bug with PHP's stream_context_create:

https://bugs.php.net/bug.php?id=63519

Fortunately, the workaround is simple. Basically, the context creator gets confused when parsing an "https" target URL to both the proxy and SSL configs. You just have to set the SNI_server_name in the SSL config:

$targetUrl = "https://something.com";
$sniServer = parse_url($targetUrl, PHP_URL_HOST);
$params = array('your'=>'post','params'=>'here');
$ctxConfig = array(
    'http' => array(
        'method' => 'POST',
        'header'  => 'Content-type: application/x-www-form-urlencoded'."\r\n",
        'content' => http_build_query($params),
        'proxy' => 'tcp://12.34.56.78:3128',
        'request_fulluri' => true
    ),
    'ssl' => array( 
        'SNI_enabled' => true,
        'SNI_server_name' => $sniServer
    )
);
$context = stream_context_create($ctxConfig);
file_get_contents($targetUrl,false,$context)

Hopefully that saves someone some time!

Thanks. $params is just the POST params you intend to send to the server. I added a clarifying declaration above. — Jon Weers, Jun 16 '15 at 14:27
Thanks. I've corrected this above. What was `$domain` is now `$sniServer`. — Jon Weers, Jun 27 '17 at 14:21

Using proxy with file_get_contents

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