I'm having a bit of an issue with websockets. So, I have a Rpi that provides me some data through a socketIO client in a pretty simple way. The following code shows how do I get to get this data:
<!DOCTYPE html>
<html>
<header>
<title>SocketIO test</title>
<script src="http://192.168.5.5:8000/socket.io/socket.io.js"></script>
</header>
<body>
<script type="text/javascript">
var client = io.connect('http://192.168.5.5:8000');
client.on('connect', function() {
console.log('connected');
});
client.on('raw', function(data){
console.log(data);
});
client.on('state', function(data){
console.log(data);
});
</script>
</body>
However, what I need to implement is a little bit more complex. I need to use a Apache server to trait some of the data before it gets to the client side. The following image shows what I attempt to build:
To reach my goal I tried several WebSocket Servers and Client libraries for PHP until I found PHPws, which looks like the best solution for my scenario. So, I read the examples, I test them and everything went well until I tried to connect to the Rpi with the following code:
require_once("../vendor/autoload.php");
$loop = \React\EventLoop\Factory::create();
$logger = new \Zend\Log\Logger();
$writer = new Zend\Log\Writer\Stream("php://output");
$logger->addWriter($writer);
$client = new \Devristo\Phpws\Client\WebSocket("ws://192.168.5.5:8000", $loop, $logger);
$client->on("connect", function() use ($logger, $client){
$logger->notice("Or we can use the connect event!");
$client->send("Hello world!");
});
$client->on("raw", function($message) use ($client, $logger){
$logger->notice("Got message: ".$message->getData());
$client->close();
});
$client->open()->then(function() use($logger, $client){
$logger->notice("We can use a promise to determine when the socket has been connected!");
});
$loop->run();
I've more or less taken this example from Devristo's github.
From the server side, the execution of the program is not throwing any error or message.
Is it possible to build what I want to build here with PHPws? If so, am I connecting properly to de Rpi server with PHPws sample code shown?
It is possible :
[Node] Socket Server (This would be your
RPi)Simple socket.io server in node to check for a (success) client connection event.
[PHP] Socket Client
Using
Elephant.IOwe setup a client (Client Example for Socket.IO v2.0)With this simple Client/Server example you will see the 'on connection' event in the node server when the browser opens the
client.php