esp8266 WiFi UDP AT command

// This is the working sketch
// THIS IS THE WORKING ONE!!
// With ESP8266

#include <OneWire.h>
#include <DallasTemperature.h>
#include <SoftwareSerial.h>

#define ONE_WIRE_BUS 3 
#define SSID "network"
#define PASS "Smorbonden(#12)"

OneWire oneWire(ONE_WIRE_BUS);
DallasTemperature sensors(&oneWire);
SoftwareSerial esp(10, 11); // RX, TX
 
void setup(){
   Serial.begin(9600);
   esp.begin(9600);
   esp.println("AT+RST");
   delay(5000);
   esp.println("AT+CWMODE=1");
   delay(5000);
   String connectString = "AT+CWJAP=";
   connectString += SSID;
   connectString += "\",\"";
   connectString += PASS;
   connectString += "\"";
   esp.println(connectString);
 }
 
void loop(){
  
  sensors.requestTemperatures();
  delay(5000);
  float tempC = sensors.getTempCByIndex(0);
  delay(5000);
  char buffer[10];
  String tempCstring = dtostrf(tempC, 4, 1, buffer);
  delay(5000);
  esp.println("AT+CIPSTART=\"UDP\",\"10.0.0.10\",16000");
  delay(5000);
  esp.println("AT+CIPSEND=12");
  delay(5000);
  esp.print(tempCstring);
  esp.println(";sensor3");
  delay(25000);
}