John Davidson

Message:

I'm using this code to send a SMTP command to an email server, I would like to integrate a sock5 proxy inside my command fsockopen, how can I do this?

$mxSocket = @fsockopen($mxHost, 25, $errno, $errstr, 2);



if ($mxSocket) {



    $response = "";

    // say HELO to mailserver

    $response .= sendCommand($mxSocket, "EHLO mx1.validemail.com");

    // initialize sending mail

    $response .= sendCommand($mxSocket, "MAIL FROM:<[email protected]>");

    // try recipient address, will return 250 when ok..

    $rcptText = sendCommand($mxSocket, "RCPT TO:<" . $emailRequest . ">");

    $response .= $rcptText;

    if (substr($rcptText, 0, 3) == "250") {



        return array('state' => true, 'content' => $response);

    

    }else {



        return array('state' => false, 'content' => $response);



    }

    // quit mail server connection

    sendCommand($mxSocket, "QUIT");

    fclose($mxSocket);





    //////////////////////////////

  

}else {



    return array('state' => false, 'content' => '');



}



function sendCommand($mxSocket, $command)

{



fwrite($mxSocket, $command . "\r\n");



$response = "";

stream_set_timeout($mxSocket, 1);



for the whole story.

  for ($i = 0; $i < 10; $i++) {

    while ($line = fgets($mxSocket)) {

      $response .= $line;

    }

    // Only continue the for-loop if the server hasn't sent anything yet.

    if ($response != "") {

      break;

    }

  }



//  print nl2br($response);

  return $response;

}

How can I use a Sock5 proxy to use in my PHP code same as I'm using with a CURL command?

Same as this command:

 curl -X -k --socks5-hostname xx.xx.x.xxx:5000 --proxy-user xxxx:xxxxx

---

My Answer:
To use a SOCKS5 proxy with fsockopen in PHP, you can use the stream_context_create function to create a context with the proxy settings and then pass that context to fsockopen. Here's an example of how you can modify your code to use a SOCKS5 proxy:

php
$proxy = 'xx.xx.x.xxx:5000';
$proxyAuth = 'xxxx:xxxxx';

$context = stream_context_create([
'socket' => [
'bindto' => '0.0.0.0:0',
'proxy' => 'tcp://' . $proxy,
'request_fulluri' => true,
'header' => 'Proxy-Authorization: Basic ' . base64_encode($proxyAuth)
]
]);

$mxSocket = @fsockopen('tcp://' . $mxHost, 25, $errno, $errstr, 2, $context);

if ($mxSocket) {
// Your existing code here
} else {
return array('state' => false, 'content' => '');
}


In this code snippet, we create a stream context with the proxy settings and then pass that context to fsockopen along with the proxy host. Make sure to replace 'xx.xx.x.xxx:5000' and 'xxxx:xxxxx' with your actual proxy host and credentials.

Please note that fsockopen does not directly support SOCKS5 proxies, so we are using a workaround by setting the proxy settings in the stream context. This may not work in all cases, especially if the proxy requires authentication or other advanced settings. If you encounter any issues, you may need to consider using a different library or tool that has built-in support for SOCKS5 proxies.