#define W5100
  #include <SocketIOClient.h>

  SocketIOClient client;
  byte mac[] = { 0xAA, 0x00, 0xBE, 0xEF, 0xFE, 0xEE };
  char hostname[] = "192.168.0.5";
  int port = 1234;

  extern String RID;
  extern String Rname;
  extern String Rcontent;

  unsigned long previousMillis = 0; 
  long interval = 10000; 
  void setup() {
    pinMode(10, OUTPUT);    //for some ethernet shield on the mega : disables the SD and enables the W5100
    digitalWrite(10, LOW);
    pinMode(4, OUTPUT);
    digitalWrite(4, HIGH);
    Serial.begin(9600);

    Ethernet.begin(mac);

    if (!client.connect(hostname, port))
      Serial.println(F("Not connected."));

    if (client.connected()){
      client.send("connection", "message", "Connected !!!!");
    }else{
      Serial.println("Connection Error");
      while(1);
    }
    delay(1000);
  }

  void loop()
  {
    unsigned long currentMillis = millis();
    if(currentMillis - previousMillis > interval)
    {
      previousMillis = currentMillis; 
      //client.heartbeat(0);
      client.send("atime", "message", "Time please?");
    }
    if (client.monitor())
    {
      Serial.println(RID);
      if (RID == "atime" && Rname == "time")
      {
        Serial.print("Time is ");
        Serial.println(Rcontent);
      }
    }
  }

  #define ESP8266
  #include <SocketIOClient.h>

  SocketIOClient client;
  const char* ssid     = "SSID";
  const char* password = "WPA KEY";

  char host[] = "192.168.0.5";
  int port = 1234;
  extern String RID;
  extern String Rname;
  extern String Rcontent;

  unsigned long previousMillis = 0;
  long interval = 5000;
  unsigned long lastreply = 0;
  unsigned long lastsend = 0;
  String JSON;
  JsonObject& root = jsonBuffer.createObject();
  void setup() {

    root["sensor"] = "gps";
    root["time"] = 1351824120;
    JsonArray& data = root.createNestedArray("data");
    data.add(double_with_n_digits(48.756080, 6));
    data.add(double_with_n_digits(2.302038, 6));
    root.printTo(JSON);
    Serial.begin(115200);
    delay(10);

    // We start by connecting to a WiFi network

    Serial.println();
    Serial.println();
    Serial.print("Connecting to ");
    Serial.println(ssid);
    
    WiFi.begin(ssid, password);
    
    while (WiFi.status() != WL_CONNECTED) {
      delay(500);
      Serial.print(".");
    }

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

    if (!client.connect(host, port)) {
      Serial.println("connection failed");
      return;
    }
    if (client.connected()){
      client.send("connection", "message", "Connected !!!!");
    }
  }

  void loop() {
  unsigned long currentMillis = millis();
    if (currentMillis - previousMillis > interval)
    {
      previousMillis = currentMillis;
      //client.heartbeat(0);
      Serial.println(JSON);
      client.send("atime", "message", "Time please?");
      client.sendJSON("JSON", JSON);
      
      lastsend = millis();
    }
    if (client.monitor())
    {
      lastreply = millis(); 
      Serial.println(RID);
      if (RID == "atime" && Rname == "time")
      {
        Serial.print("Il est ");
        Serial.println(Rcontent);
      }
    }
  }

  #define ESP32
  #include <SocketIOClient.h>

  SocketIOClient client;
  const char* ssid     = "xxxxxxxxxxxxxxxxx";
  const char* password = "xxxxxxxxxxxxx";

  char host[] = "192.168.1.1";
  int port = 1234;
  extern String RID;
  extern String Rname;
  extern String Rcontent;

  unsigned long previousMillis = 0;
  long interval = 5000;
  unsigned long lastreply = 0;
  unsigned long lastsend = 0;

  void setup() {
    Serial.begin(115200);
    delay(10);

    // We start by connecting to a WiFi network

    Serial.println();
    Serial.println();
    Serial.print("Connecting to ");
    Serial.println(ssid);
    
    WiFi.begin(ssid, password);
    
    while (WiFi.status() != WL_CONNECTED) {
      delay(500);
      Serial.print(".");
    }

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

    if (!client.connect(host, port)) {
      Serial.println("connection failed");
      return;
    }
    if (client.connected()){
      client.send("connection", "message", "Connected !!!!");
    }
  }

  void loop() {
  unsigned long currentMillis = millis();
    if (currentMillis - previousMillis > interval)
    {
      previousMillis = currentMillis;
      //client.heartbeat(0);
      Serial.print("**************************************  ");
      Serial.println(lastsend);
      client.send("atime", "message", "Time please?");
      lastsend = millis();
      Serial.print("**************************************  ");
      Serial.println(lastsend);
    }
    if (client.monitor())
    {
      lastreply = millis(); 
      Serial.println(RID);
      if (RID == "atime" && Rname == "time")
      {
        Serial.print("Il est ");
        Serial.println(Rcontent);
      }
    }
  }