m5stackのIPアドレス管理をmDNSに丸投げする

#include <M5Stack.h>
#include <WiFi.h>
#include <ESPmDNS.h>
WiFiClient wifi;

const char* wifi_ssid = "Your WiFi AP";
const char* wifi_password = "pass";
const char* MDNS_NAME="m5stack";

//.local不要
const char* server = "Your Server mDNS";

void setup() {
  M5.begin(true, false, true);
  delay(1000);
  //Serial.begin(115200);
  wifi_connect();
  if(!MDNS.begin(MDNS_NAME)){
    Serial.print("Error MDNS_NAME:");
    Serial.println(MDNS_NAME);
    delay(10000);
    ESP.restart();
  }
    IPAddress server_ip = MDNS.queryHost(server);
    Serial.print("Server:");
    Serial.print(server);
    Serial.print(":"); 
    Serial.println(server_ip);
    wifi_disconnect();
    Serial.println("WiFi Disconnect");
}

void loop() {
  //MDNS.update();
  delay(10000);
}

void wifi_connect(void){
  Serial.print("WiFi Connenting");

  WiFi.begin(wifi_ssid, wifi_password);
  while (WiFi.status() != WL_CONNECTED) {
    Serial.print(".");
    delay(1000);
  }
  Serial.println("");
  Serial.print("Connected : ");
  Serial.println(WiFi.localIP());

}

void wifi_disconnect(){
  while(WiFi.status() == WL_CONNECTED ){
  WiFi.disconnect();
  delay(2000);
  }
}