ESP32 WROOM WIFI Ping

Wireless & IoT Wifi
1

Hi Everybody.

I need help with this project.

I have one of this ESP32 board, and I’m trying to figure out, how can i get DNS-name of the machine, when I’m doing LAN scan?

Like in the in Windows, you can do " nbtstat -A xxx.xxx.xxx.xxx (where x is the ip address) " to get machine name.

Here is my code, which is scanning my LAN

#include <ETH.h>
#include <WiFi.h>
#include "ping.h"

void setup()
{
Serial.begin(9600);

WiFi.begin("my-ssid","my-password");

while (WiFi.status() != WL_CONNECTED) {
delay(500);
Serial.print(".");
}

Serial.println("");
Serial.println("WiFi connected");
Serial.println("IP address: ");
Serial.println(WiFi.localIP());

Serial.begin(115200);

}

bool pingtest (IPAddress ia) {
IPAddress adr = IPAddress(ia[0], ia[1], ia[2], ia[3]);
Serial.printf("Ping : %d.%d.%d.%d : ", ia[0], ia[1], ia[2], ia[3]);

if (ping_start(adr, 1, 0, 0, 1)) {
Serial.println("OK");
return true;
} else {
Serial.println("Request time out");
return false;
}

}

void loop(){

for(int i = 100; i <= 150; i++){
pingtest( IPAddress(192,168,1,i));
}

}

and this is my outputs

Ping : 192.168.1.100 : Request time out
Ping : 192.168.1.101 : Request time out
Ping : 192.168.1.102 : Request time out
Ping : 192.168.1.103 : Request time out
Ping : 192.168.1.104 : Request time out
Ping : 192.168.1.105 : Request time out
Ping : 192.168.1.106 : OK
Ping : 192.168.1.107 : Request time out
Ping : 192.168.1.108 : OK
Ping : 192.168.1.109 : OK
Ping : 192.168.1.110 : OK

So instead of “OK” I would like to see machine names, if possible.

Thank you Very Much