/*
 *  This sketch sends a message to a TCP server
 *
 */

#include <ESP8266WiFi.h>
#include <ESP8266WiFiMulti.h>

String IDX_U     = "1085"; //idx du capteur virtuels tension             
String IDX_I     = "1086"; //idx du capteur virtuels intensite            
String IDX_W     = "1087";

ESP8266WiFiMulti WiFiMulti;

void setup() {
    Serial.begin(9600);
    delay(10);

    // We start by connecting to a WiFi network
    WiFi.mode(WIFI_STA);
    WiFiMulti.addAP("Livebox-37cc", "8A6060920A8A86896F770F2C47");

    Serial.println();
    Serial.println();
    Serial.print("Wait for WiFi... ");

    while(WiFiMulti.run() != WL_CONNECTED) {
        Serial.print(".");
        delay(500);
    }

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

    delay(500);
}


void loop() {
    const uint16_t port = 81;
    const char * host = "192.168.1.3"; // ip or dns
     
    Serial.print("connecting to ");
    Serial.println(host);

    // Use WiFiClient class to create TCP connections
    WiFiClient client;

    if (!client.connect(host, port)) {
        Serial.println("connection failed");
        Serial.println("wait 5 sec...");
        delay(5000);
        return;
    }

    // This will send the request to the server
    client.print("GET /json.htm?type=command&param=udevice&idx="+IDX_W+"&nvalue=0&svalue=10;20");
    client.println(" HTTP/1.1");
    client.println("Host: 192.168.1.3:81");
    client.println("User-Agent: Arduino-ethernet");
    client.println("Connection: close");
    client.println();
    //read back one line from server
    String line = client.readStringUntil('\r');
    Serial.println(line);

    Serial.println("closing connection");
    client.stop();
    
    delay(500);
}