#include <SoftwareSerial.h>
#include <ESP8266wifi.h>

#define sw_serial_rx_pin 4 //  Connect this pin to TX on the esp8266
#define sw_serial_tx_pin 6 //  Connect this pin to RX on the esp8266
#define esp8266_reset_pin 5 // Connect this pin to CH_PD on the esp8266, not reset. (let reset be unconnected)

SoftwareSerial swSerial(sw_serial_rx_pin, sw_serial_tx_pin);

// the last parameter sets the local echo option for the ESP8266 module..
ESP8266wifi wifi(swSerial, swSerial, esp8266_reset_pin, Serial);//adding Serial enabled local echo and wifi debug

String inputString;
boolean stringComplete = false;
unsigned long nextPing = 0;

void setup() {
  inputString.reserve(20);
  swSerial.begin(9600);
  Serial.begin(9600);
  while (!Serial)
    ;
  Serial.println("Starting wifi");

  wifi.setTransportToTCP();// this is also default
  // wifi.setTransportToUDP();//Will use UDP when connecting to server, default is TCP

  wifi.endSendWithNewline(true); // Will end all transmissions with a newline and carrage return ie println.. default is true

  wifi.begin();

  //Turn on local ap and server (TCP)
  wifi.startLocalAPAndServer("MY_CONFIG_AP", "", "5", "2121");

  wifi.connectToAP("Livebox-37cc", "8A6060920A8A86896F770F2C47");
  wifi.connectToServer("192.168.0.10", "8080");
  wifi.send(SERVER, "ESP8266 test app started");
}

void loop() {

  //Make sure the esp8266 is started..
  if (!wifi.isStarted())
    wifi.begin();

  //Send what you typed in the arduino console to the server
  static char buf[20];
  if (stringComplete) {
    inputString.toCharArray(buf, sizeof buf);
    wifi.send(SERVER, buf);
    inputString = "";
    stringComplete = false;
  }

  //Send a ping once in a while..
  if (millis() > nextPing) {
    wifi.send(SERVER, "Ping ping..");
    nextPing = millis() + 10000;
  }

  //Listen for incoming messages and echo back, will wait until a message is received, or max 6000ms..
  WifiMessage in = wifi.listenForIncomingMessage(6000);
  if (in.hasData) {
    if (in.channel == SERVER)
      Serial.println("Message from the server:");
    else
      Serial.println("Message a local client:");
    Serial.println(in.message);
    //Echo back;
    wifi.send(in.channel, "Echo:", false);
    wifi.send(in.channel, in.message);
    nextPing = millis() + 10000;
  }
  
  //If you want do disconnect from the server use:
  // wifi.disconnectFromServer();
  
}

//Listen for serial input from the console
void serialEvent() {
  while (Serial.available()) {
    char inChar = (char)Serial.read();
    inputString += inChar;
    if (inChar == '\n') {
      stringComplete = true;
    }
  }
}