Perl

WebSocket Connect through SOCKS Proxy

See more WebSocket Examples

This example shows how to establish a WebSocket connection through a SOCKS proxy. Perl

use chilkat();

$success = 0;

# This example requires the Chilkat API to have been previously unlocked.
# See Global Unlock Sample for sample code.

# --------------------------------------------------
# This example borrows the code from the REST using SOCKS Proxy example.
# We first use the Chilkat Socket object to establish a connection to the WebSocket server through a SOCKS proxy.
# Next, the Rest object uses the Socket object for its connection.
# Finally, the WebSocket object uses the Rest object for its connection.  
# 

$rest = chilkat::CkRest->new();
$socket = chilkat::CkSocket->new();

# Set the SOCKS proxy domain or IP address, port, and SOCKS version number (4 or 5)
$socket->put_SocksHostname("192.168.1.79");
$socket->put_HttpProxyPort(1080);
$socket->put_SocksVersion(5);

# Provide authentication to the SOCKS proxy, if needed.
$socket->put_SocksUsername("SOCKS_PROXY_LOGIN");
$socket->put_SocksPassword("SOCKS_PROXY_PASSWORD");

# Connect to the websocket server through the HTTP proxy.
$bTls = 0;
$port = 80;
$maxWaitMs = 5000;
$success = $socket->Connect("some-websocket-server.com",$port,$bTls,$maxWaitMs);
if ($success != 1) {
    print "Connect Failure Error Code: " . $socket->get_ConnectFailReason() . "\r\n";
    print $socket->lastErrorText() . "\r\n";
    exit;
}

# Tell the Rest object to use the connected socket.
$success = $rest->UseConnection($socket,1);
if ($success != 1) {
    print $rest->lastErrorText() . "\r\n";
    exit;
}

$ws = chilkat::CkWebSocket->new();

# Tell the WebSocket to use this connection.
$success = $ws->UseConnection($rest);
if ($success != 1) {
    print $ws->lastErrorText() . "\r\n";
    exit;
}

# Add the standard WebSocket open handshake headers that will be needed.
# (This adds the required HTTP request headers to the rest object.)
$ws->AddClientHeaders();

# Add any additional headers that might be desired.
# Two common WebSocketSpecific headers are "Sec-WebSocket-Protocol" and "Origin".
$rest->AddHeader("Sec-WebSocket-Protocol","x-some-websocket-subprotocol");
$rest->AddHeader("Origin","http://some-websocket-server.com");

# Do the open handshake.
$responseBody = $rest->fullRequestNoBody("GET","/something");
if ($rest->get_LastMethodSuccess() != 1) {
    print $rest->lastErrorText() . "\r\n";
    exit;
}

# If successful, the HTTP response status code should be 101,
# and the response body will be empty. (If it failed, we'll have a look
# at the response body..)
$statusCode = $rest->get_ResponseStatusCode();
print "Response status code: " . $statusCode . "\r\n";

if ($statusCode != 101) {
    print $responseBody . "\r\n";
    print "-- Failed because of unexpected response status code." . "\r\n";
    exit;
}

# We have the expected 101 response, so let's now validate the 
# contents of the response, such as the value sent by the server in the
# Sec-WebSocket-Accept header. 
$success = $ws->ValidateServerHandshake();
if ($success != 1) {
    print $ws->lastErrorText() . "\r\n";
    exit;
}

print "WebSocket connection successful." . "\r\n";

# The application may now begin sending and receiving frames on the WebSocket connection.
# (At this point, we're done with the rest and socket objects...)

print "Success." . "\r\n";