websocket connection problem

[david6228]

• Mojolicious version: 8.70
• Perl version: 5.22.4
• Operating system: Win7

a connection problem when use Mojo Websocket as server and use AS3WebSocket as client, it's can not successly create a connetion between client and server.

this problem just meet when we use Mojolicious version later than 6.22，everything is ok in Mojolicious 6.22.

ActionScript 3 WebSocket Client
This is an AS3 implementation of a client library of the WebSocket protocol, as specified in the RFC6455 standard.
THIS CLIENT WILL NOT WORK with draft-75 or draft-76/-00 servers that are deployed on the internet. It is only for the most recent RFC6455 standard.
https://github.com/theturtle32/AS3WebSocket

server code:

use Mojolicious::Lite;
use Mojo::IOLoop;
use Mojo::Server::Daemon;
use Mojo::UserAgent;

# Silence
$ENV{'MOJO_WEBSOCKET_DEBUG'}=1;

app->log->level('debug');

# Echo incoming WebSocket messages
my $num;
websocket '/test' => sub {
  my $self = shift;

  $self->send("Client Connect: ".$self->tx);
  Mojo::IOLoop->stream($self->tx->connection)->timeout(300);
  say 'Opened: ', ++$num;
  $self->on(message => sub { shift->send(shift) });
  $self->on(finish => sub { say 'Closed: ', --$num });
};

# Server with longer than normal inactivity timeout
my $port   = 3333;
my $daemon = Mojo::Server::Daemon->new(
  silent             => 0,
  app                => app,
  inactivity_timeout => 300,
  listen             => ['http://127.0.0.1:1234']
);
$daemon->start;

Server:

[2022-07-27 14:00:33.41992] [3408] [info] Listening at "http://127.0.0.1:1234"
Web application available at http://127.0.0.1:1234
[2022-07-27 14:00:48.29398] [3408] [debug] [9v9px1EQ] GET "/test"
[2022-07-27 14:00:48.29471] [3408] [debug] [9v9px1EQ] Routing to a callback
[2022-07-27 14:00:48.29499] [3408] [debug] [9v9px1EQ] 101 Switching Protocols (0.001006s, 994.036/s)
Opened: 1
Closed: 0\

Client:
The server can not respond in any of our requested protocols
Disconnected

[kraih]

You need to select a subprotocol.

[david6228]

thank your response, clould give some detail help that how to rightly select a subprotocol of Websocket RFC6455 ?

in server side or client side ?

Client Code:

var websocket:WebSocket = new WebSocket("ws://127.0.0.1:1234/test", "*", "my-chat-protocol");
websocket.addEventListener(WebSocketEvent.CLOSED, handleWebSocketClosed);
websocket.addEventListener(WebSocketEvent.OPEN, handleWebSocketOpen);
websocket.addEventListener(WebSocketEvent.MESSAGE, handleWebSocketMessage);
websocket.addEventListener(WebSocketErrorEvent.CONNECTION_FAIL, handleConnectionFail);
websocket.connect();

function handleWebSocketOpen(event:WebSocketEvent):void {
  trace("Connected");
  websocket.sendUTF("Hello World!\n");
  
  var binaryData:ByteArray = new ByteArray();
  binaryData.writeUTF("Hello as Binary Message!");
  websocket.sendBytes(binaryData);
}

function handleWebSocketClosed(event:WebSocketEvent):void {
  trace("Disconnected");
}

private function handleConnectionFail(event:WebSocketErrorEvent):void {
  trace("Connection Failure: " + event.text);
}

function handleWebSocketMessage(event:WebSocketEvent):void {
  if (event.message.type === WebSocketMessage.TYPE_UTF8) {
    trace("Got message: " + event.message.utf8Data);
  }
  else if (event.message.type === WebSocketMessage.TYPE_BINARY) {
    trace("Got binary message of length " + event.message.binaryData.length);
  }
}

[kraih]

https://docs.mojolicious.org/Mojolicious/Guides/Cookbook#WebSocket-web-service

[david6228]

I got it, thank you very much.
server side add $self->tx->with_protocols('v2.proto', 'v1.proto');
client side change as :
var websocket:WebSocket = new WebSocket("ws://127.0.0.1:1234/test", "", "v1.proto");

[leandrocombr]

I have the same problem, did you manage to solve it?

[leandrocombr]

I'm receiving the message on my Websocket - 101 Switching Protocols

Have you ever been through this?