Getting "Connection closed before handshake"

[quarkmarino]

Hi there, I'm having trouble connecting to the following ws "wss://streamer.cryptocompare.com"

docs here, https://www.cryptocompare.com/api/#-api-web-socket-

my implementation is the following

Btw, I'm running it on a laravel command "handle()' method

\Ratchet\Client\connect('wss://streamer.cryptocompare.com')->then(function($conn) {
	$conn->on('m', function($msg) use ($conn) {
		echo "Received: {$msg}\n";
		$conn->close();
	});


	$conn->send(['SubAdd' => '5~CCCAGG~BTC~USD']);
}, function ($e) {
	echo "Could not connect: {$e->getMessage()}\n";
});

basically the same first example from the docs, now, I've already got another working ws client in another project, however, in that other project I had to toy around with the headers, but this time, I haven't been able to make it work, also, I managed to implement this exact endpoint in nodejs using socket.io as a proof of concept, and it worked perfectly!, but really need to make it work on php

any idea, where it could be breaking, or where exactly to look at?

[mbonneau]

@quarkmarino Can you post the node code for comparison?

[quarkmarino]

@mbonneau Sure

in the same manner, it is an adonisJS command

'use strict'

const Command = use('Command')
const Io = use('socket.io-client')('https://streamer.cryptocompare.com/')

class CcMonitor extends Command {

  get signature () {
    return 'cc:monitor'
  }

  get description () {
    return 'Tell something helpful about this command'
  }

  * handle (args, options) {
    const subscription = ['5~CCCAGG~BTC~USD'];
    Io.emit('SubAdd', {subs:subscription} );
    Io.on('m', function(data){
      console.log(data)
    });
  }
}

module.exports = CcMonitor

and it totally works

[mbonneau]

This is not working because Pawl does not implement the socket.io protocol that crytocompare is using. Pawl is only a websocket transport. socket.io is a protocol that runs on top of websockets (or other transports).

[quarkmarino]

Ohh ok, then I'll have to go with socket.io, thank you for your time @mbonneau