ESP32 UDP read data

Projects Programming
3

Sorry I'm new on here , cannot find an edit option, just read how to ad tags, so let me try again.
will this work !

#include <analogWrite.h>
#include "WiFi.h"
#include "AsyncUDP.h"
#include <ESP32Tone.h>


const char * ssid = "Paul2";
const char * password = "abcdeabcde";
String header;
const int buzzer = 4;
const int GarR = 2;
const int GarG = 5;
char received[50] = "";
char test[100];

AsyncUDP udp;
IPAddress local_IP(192, 168, 0, 32);
IPAddress gateway(192, 168, 0, 1);
IPAddress subnet(255, 255, 255, 0);
IPAddress primaryDNS(8, 8, 8, 8);   //optional
IPAddress secondaryDNS(8, 8, 4, 4); //optional
 
void setup()
{
    pinMode(buzzer, OUTPUT);
    pinMode(GarR, OUTPUT);
    pinMode(GarG, OUTPUT);

    Serial.begin(9600);
    WiFi.mode(WIFI_STA);
    WiFi.begin(ssid, password);
    if (!WiFi.config(local_IP, gateway, subnet, primaryDNS, secondaryDNS)) {
    Serial.println("STA Failed to configure");
    
  }

        Serial.println(received);
if (WiFi.waitForConnectResult() != WL_CONNECTED) {
        Serial.println("WiFi Failed");
        while(1) {
            delay(1000);
        }
    }
    if(udp.listen(1234)) {
        Serial.print("UDP Listening on IP: ");
        Serial.println(WiFi.localIP());
        udp.onPacket([](AsyncUDPPacket packet) {
            Serial.print("UDP Packet Type: ");
            Serial.print(packet.isBroadcast()?"Broadcast":packet.isMulticast()?"Multicast":"Unicast");
            Serial.print(", From: ");
            Serial.print(packet.remoteIP());
            Serial.print(":");
            Serial.print(packet.remotePort());
            Serial.print(", To: ");
            Serial.print(packet.localIP());
            Serial.print(":");
            Serial.print(packet.localPort());
            Serial.print(", Length: ");
            Serial.print(packet.length());
            Serial.print(", Data: ");
            Serial.write(packet.data(), packet.length());
            // received == (packet.data());   doesnt like this laks cast ? i dont understand the explanation
         // received == (packet.data(), packet.length()); forbids compariton between pointer and intiger mmmm
        });
    }
}

void loop()
{
        //received ==  ((packet.data());  packet not declared in this scope
       // if ((packet.data()) == "Heartbeat") packet not declared in this scope
   //       Serial.println("Heartbeat returned");
    //   }