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(PHP Extension) SSH Tunnel with Dynamic Port Forwarding

Demonstrates how to start a background thread that runs a portable SSH tunnel w/ dynamic port forwarding that the foreground thread can use for establishing connections through an SSH tunnel.

Chilkat PHP Downloads

PHP Extension for Windows, Linux, and MAC OS X

<?php

// The version number (9_5_0) should match version of the Chilkat extension used, omitting the micro-version number.
// For example, if using Chilkat v9.5.0.48, then include as shown here:
include("chilkat_9_5_0.php");

//  Starting in v9.5.0.49, all Chilkat classes can be unlocked at once at the beginning of a program
//  by calling UnlockBundle.  It requires a Bundle unlock code.
$chilkatGlob = new CkGlobal();
$success = $chilkatGlob->UnlockBundle('Anything for 30-day trial.');
if ($success != true) {
    print $chilkatGlob->lastErrorText() . "\n";
    exit;
}

//  This example requires Chilkat version 9.5.0.50 or greater.
$tunnel = new CkSshTunnel();

$sshHostname = 'www.my-ssh-server.com';
$sshPort = 22;

//  Connect to an SSH server and establish the SSH tunnel:
$success = $tunnel->Connect($sshHostname,$sshPort);
if ($success != true) {
    print $tunnel->lastErrorText() . "\n";
    exit;
}

//  Authenticate with the SSH server via a login/password
//  or with a public key.
//  This example demonstrates SSH password authentication.
$success = $tunnel->AuthenticatePw('mySshLogin','mySshPassword');
if ($success != true) {
    print $tunnel->lastErrorText() . "\n";
    exit;
}

//  Indicate that the background SSH tunnel thread will behave as a SOCKS proxy server
//  with dynamic port forwarding:
$tunnel->put_DynamicPortForwarding(true);

//  We may optionally require that connecting clients authenticate with our SOCKS proxy server.
//  To do this, set an inbound username/password.  Any connecting clients would be required to
//  use SOCKS5 with the correct username/password.
//  If no inbound username/password is set, then our SOCKS proxy server will accept both
//  SOCKS4 and SOCKS5 unauthenticated connections.

$tunnel->put_InboundSocksUsername('chilkat123');
$tunnel->put_InboundSocksPassword('password123');

//  Start the listen/accept thread to begin accepting SOCKS proxy client connections.
//  Listen on port 1080.
$success = $tunnel->BeginAccepting(1080);
if ($success != true) {
    print $tunnel->lastErrorText() . "\n";
    exit;
}

//  Now that a background thread is running a SOCKS proxy server that forwards connections
//  through an SSH tunnel, it is possible to use any Chilkat implemented protocol that is SOCKS capable,
//  such as HTTP, POP3, SMTP, IMAP, FTP, etc.  The protocol may use SSL/TLS because the SSL/TLS
//  will be passed through the SSH tunnel to the end-destination.  Also, any number of simultaneous
//  connections may be routed through the SSH tunnel.

//  For this example, let's do a simple HTTPS request:
$url = 'https://www.ethereum.org/';

$http = new CkHttp();

//  Indicate that the HTTP object is to use our portable SOCKS proxy/SSH tunnel running in our background thread.
$http->put_SocksHostname('localhost');
$http->put_SocksPort(1080);
$http->put_SocksVersion(5);
$http->put_SocksUsername('chilkat123');
$http->put_SocksPassword('password123');

$http->put_SendCookies(true);
$http->put_SaveCookies(true);
$http->put_CookieDir('memory');

//  Do the HTTPS page fetch (through the SSH tunnel)
$html = $http->quickGetStr($url);
if ($http->get_LastMethodSuccess() != true) {
    print $http->lastErrorText() . "\n";
    exit;
}

//  Stop the background listen/accept thread:
$waitForThreadExit = true;
$success = $tunnel->StopAccepting($waitForThreadExit);
if ($success != true) {
    print $tunnel->lastErrorText() . "\n";
    exit;
}

//  Close the SSH tunnel (would also kick any remaining connected clients).
$success = $tunnel->CloseTunnel($waitForThreadExit);
if ($success != true) {
    print $tunnel->lastErrorText() . "\n";
    exit;
}


?>

 

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