PHP Extension

Duplicate Python websockets

See more WebSocket Examples

Demonstrates how to duplicate the following Python client-side websocket snippet:

async with websockets.connect('ws://192.168.1.35/websocket') as websocket:
await websocket.send("http.controller_login:username=xxx&password=xxxxx")
response = await websocket.recv()

PHP Extension

<?php

include("chilkat.php");

$success = false;

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

// In Python, the following line of code does more than just connect:
// 
//      websockets.connect('ws://192.168.1.35/websocket')
// 
// It is connecting to 192.168.1.35 without using TLS.  If the URI starts with "wss://", then TLS should be used.
// But this URI begins with just "ws:/", so no TLS.

// Also, after connecting, a GET request is sent to the /websocket endpoint.
// In summary, the websockets.connect function is establishing the connection and it sends a GET request.

// First establish the connection.
// No TLS, use the default HTTP port 80.
$rest = new CkRest();
$success = $rest->Connect('192.168.1.35',80,false,false);
if ($success != true) {
    print $rest->lastErrorText() . "\n";
    exit;
}

$ws = new CkWebSocket();

// Tell the WebSocket to use this connection.
$success = $ws->UseConnection($rest);
if ($success != true) {
    print $ws->lastErrorText() . "\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();

// Now send the GET request to /websockets.
$responseBody = $rest->fullRequestNoBody('GET','/websockets');
if ($rest->get_LastMethodSuccess() != true) {
    print $rest->lastErrorText() . "\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 . "\n";

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

// We have the expected 101 response, so let's now validate the 
// contents of the response.
$success = $ws->ValidateServerHandshake();
if ($success != true) {
    print $ws->lastErrorText() . "\n";
    exit;
}

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

// The application may now begin sending and receiving frames on the WebSocket connection.

// The 1st frame sent by the Python snippet is:
// 
//     websocket.send("http.controller_login:username=xxx&password=xxxxx")
// 

// Send the same using Chilkat, and get the response.
$finalFrame = true;
$success = $ws->SendFrame('http.controller_login:username=xxx&password=xxxxx',$finalFrame);
if ($success != true) {
    print $ws->lastErrorText() . "\n";
    exit;
}

// Read an incoming frame.
$success = $ws->ReadFrame();
if ($success != true) {
    print 'Failed to receive a frame' . "\n";
    print 'ReadFrame fail reason = ' . $ws->get_ReadFrameFailReason() . "\n";
    print $ws->lastErrorText() . "\n";
    exit;
}

// Show the string that was received.
$receivedStr = $ws->getFrameData();
print 'Received: ' . $receivedStr . "\n";

// Continue with whatever additional communications are desired...
// ....
// 

?>