How To Make Server Stay Connected to Client, Send INT Value? about arduinowebsockets HOT 7 CLOSED

/*
  Minimal Esp32 Websockets Server

  This sketch:
        1. Connects to a WiFi network
        2. Starts a websocket server on port 80
        3. Waits for connections
        4. Once a client connects, it wait for a message from the client
        5. Sends an "echo" message to the client
        6. closes the connection and goes back to step 3

  Hardware:
        For this sketch you only need an ESP32 board.

  Created 15/02/2019
  By Gil Maimon
  https://github.com/gilmaimon/ArduinoWebsockets
*/

#include <ArduinoWebsockets.h>
#include <WiFi.h>

const char* ssid = "GEE"; //Enter SSID
const char* password = "catface1!"; //Enter Password

int print_type_int = 0;
String print_type_string = "";

using namespace websockets;

WebsocketsServer server;

std::vector<WebsocketsClient> connectedClients;

void setup() {
  Serial.begin(115200);
  // Connect to wifi
  WiFi.begin(ssid, password);

  // Wait some time to connect to wifi
  for(int i = 0; i < 15 && WiFi.status() != WL_CONNECTED; i++) {
      Serial.print(".");
      delay(1000);
  }

  Serial.println("");
  Serial.println("WiFi connected");
  Serial.println("IP address: ");
  Serial.println(WiFi.localIP());   //You can get IP address assigned to ESP

  server.listen(80);
  Serial.print("Is server live? ");
  Serial.println(server.available());
}

void loop() {
    // First, lets see if there are clients which wants to connect to our server
    while (server.poll()) {
        // If we are here, there is another client willing to connect!
        // Lets accept the connection, and add it to the list of clients
        WebsocketsClient client = server.accept();

        // Lets keep a refernce to the client in our collection, so We won't loose it and close the connection early
        connectedClients.push_back(client);
    }


    // Now, lets make sure that all the clients that are in our vector are actually still connected
    std::vector<WebsocketsClient> actuallyConnectedClients;
    // For every client in connectedClients:
    for(const WebsocketsClient& client : connectedClients) {
        // If the client is still connected, add it to the new list
        if (client.available()) {
            actuallyConnectedClients.push_back(client);
        }
    }
    // Now we are pretty sure that everyone in connectedClients are actually connected
    connectedClients = actuallyConnectedClients;

    // Lets update the int value, Read new value for int "print_type:
    print_type_int = random(2,4);  // Will return either "2" or "3"
    Serial.print("print_type_int: "); Serial.println(print_type_int);
    // Convert print_type_int to a String:
    print_type_string = print_type_int;
    Serial.print("print_type_string: "); Serial.println(print_type_string);


    // Last, we send the new value to all the connected clients
    for(const WebsocketsClient& client : connectedClients) {
        // If the client is still connected, add it to the new list
        client.send(print_type_string);
    } 

    // Sleep until next iteration
    Serial.print("Num of connected clients: "); Serial.println(connectedClients.size());
    delay(1000);
}

#include <ArduinoWebsockets.h>
#include <WiFi.h>

const char* ssid = "GEE"; //Enter SSID
const char* password = "catface1!"; //Enter Password

int print_type_int = 0;
String print_type_string = "";

using namespace websockets;

WebsocketsServer server;

std::vector<WebsocketsClient> connectedClients;

void setup() {
  Serial.begin(115200);
  // Connect to wifi
  WiFi.begin(ssid, password);

  // Wait some time to connect to wifi
  for(int i = 0; i < 15 && WiFi.status() != WL_CONNECTED; i++) {
      Serial.print(".");
      delay(1000);
  }

  Serial.println("");
  Serial.println("WiFi connected");
  Serial.println("IP address: ");
  Serial.println(WiFi.localIP());   //You can get IP address assigned to ESP

  server.listen(80);
  Serial.print("Is server live? ");
  Serial.println(server.available());
}

void loop() {
    // First, lets see if there are clients which wants to connect to our server
    while (server.poll()) {
        // If we are here, there is another client willing to connect!
        // Lets accept the connection, and add it to the list of clients
        WebsocketsClient client = server.accept();

        // Lets keep a refernce to the client in our collection, so We won't loose it and close the connection early
        connectedClients.push_back(client);
    }


    // Now, lets make sure that all the clients that are in our vector are actually still connected
    std::vector<WebsocketsClient> actuallyConnectedClients;
    // For every client in connectedClients:
    for(WebsocketsClient& client : connectedClients) {
        // If the client is still connected, add it to the new list
        if (client.available()) {
            actuallyConnectedClients.push_back(client);
        }
    }


    // Now we are pretty sure that everyone in connectedClients are actually connected
    connectedClients = actuallyConnectedClients;

    // Lets update the int value, Read new value for int "print_type:
    print_type_int = random(2,4);  // Will return either "2" or "3"
    Serial.print("print_type_int: "); Serial.println(print_type_int);
    // Convert print_type_int to a String:
    print_type_string = print_type_int;
    Serial.print("print_type_string: "); Serial.println(print_type_string);


    // Last, we send the new value to all the connected clients
    for(WebsocketsClient& client : connectedClients) {
        // If the client is still connected, add it to the new list
        client.send(print_type_string);
    } 

    // Sleep until next iteration
    Serial.print("Num of connected clients: "); Serial.println(connectedClients.size());
    delay(1000);
}