heroku-examples / node-websockets

Node.js WebSocket Example

This example accompanies the Using WebSockets on Heroku with Node.js tutorial.

node-websockets's Issues

error

i have tried to deploy this on heroku but after a successful deployment when i check to heroku logs, there i got an error
2020-04-16T20:31:39.855061+00:00 app[web.1]: const wss = new Server({ server });
2020-04-16T20:31:39.855062+00:00 app[web.1]: ^
2020-04-16T20:31:39.855067+00:00 app[web.1]:
2020-04-16T20:31:39.855068+00:00 app[web.1]: ReferenceError: server is not defined
2020-04-16T20:31:39.855070+00:00 app[web.1]: at Object. (/app/server.js:13:26)

How to manage esp32 client connect to heroku websocket nodejs server

Dear Sir ,

I have a nodejs server running on a local machine connect to esp32 client that working fine .

Server:
const express = require('express')
const app = express()
const server = require('http').createServer(app);
const WebSocket = require('ws');

const wss = new WebSocket.Server({ server:server });

wss.on('connection', function connection(ws) {
console.log('A new client Connected!');
ws.send('Welcome New Client!');

ws.on('message', function incoming(message) {
console.log('received: %s', message);

server.listen(83, () => console.log(Lisening on port :83))

client side 👍

#include <WiFi.h>
#include <WiFiClient.h>
//#include <WebSocketsServer.h>
#include <WebSockets.h>
#include <WebSocketsClient.h>
//#include <WebServer.h>

const char* ssid = "X";
const char* password = "X";

IPAddress local_IP(192, 168, 1,65);
IPAddress gateway(192, 168, 1, 1);
IPAddress subnet(255,255,255,0);
IPAddress primaryDNS(8, 8, 8, 8);

// Initialise websockets, web server and servo
//WebSocketsServer webSocket = WebSocketsServer(1337);

WebSocketsClient webSocket;

void setup(void) {

Serial.begin(115200);
// Initialize the output variables as outputs

// Connect to Wi-Fi network with SSID and password
if (!WiFi.config(local_IP, gateway, subnet, primaryDNS)) {
Serial.println("STA Failed to configure");
}

// Connect to Wi-Fi network with SSID and password
Serial.print("Connecting to ");
Serial.println(ssid);
WiFi.begin(ssid, password);
// while (WiFi.status() != WL_CONNECTED) {
// delay(500);
//digitalWrite(32,HIGH);
//
// //Serial.print(".");
// }
// Print local IP address and start web server
Serial.println("");
Serial.println("WiFi connected.");
Serial.println("IP address: ");
Serial.println(WiFi.localIP());

webSocket.begin("192.168.1.3", 83, "/");
delay(4000);
webSocket.onEvent(webSocketEvent);

// Configure web server to host HTML files
//server.onNotFound({
// if(!handleFileRead(server.uri()))
// server.send(404, "text/plain", "FileNotFound");
// });
// server.begin();
Serial.println("HTTP server started");

}

void loop() {
// put your main code here, to run repeatedly:
webSocket.loop();
//String message= "hello from client";
//webSocket.broadcastTXT(message);

}

void webSocketEvent(WStype_t type, uint8_t * payload, size_t length) {

//const int PROG = digitalRead(27);

switch(type) {

// Runs when a user disconnects
case WStype_DISCONNECTED: {
  Serial.printf("[WSc] Disconnected!\n");
  break;
}

// Runs when a user connects
case WStype_CONNECTED: {
//  IPAddress ip = webSocket.remoteIP(num);
  Serial.printf("[WSc] Connected to url: %s\n", payload);
       
        webSocket.sendTXT("hello i am Connected");
       
       }
  break;
case WStype_TEXT:{
  Serial.printf("[WSc] get text: %s\n", payload);
    String text = String((char *) &payload[0]);

  Serial.println (text);
    break;     

}

// send data to server
// webSocket.sendBIN(payload, length);
// break;
// case WStype_ERROR:
// case WStype_FRAGMENT_TEXT_START:
// case WStype_FRAGMENT_BIN_START:
// case WStype_FRAGMENT:
// case WStype_FRAGMENT_FIN:
// break;
}

}

How i manage to put this server on heroku cloud to be working?

Connect through an external client

Do I need to change some config in heroku to enable external clients to connect?

I tried to connect using a socket.io client running locally and pointing to wss://herokusite:port but I was never able to connect