#include <WiFi.h>
#include <HTTPClient.h>

String serverName = "https://postman-echo.com/post";

void setup() {
  //setup for serial communication
  Serial.begin(9600);
  Serial.print("Connecting to WiFi");
  //setup for WiFi connection
  WiFi.begin("Wokwi-GUEST", "", 6);
  while (WiFi.status() != WL_CONNECTED) {
    delay(100);
    Serial.print(".");
  }
  Serial.println("WiFi Connected!");
}

void loop() {
  if (WiFi.status() == WL_CONNECTED) {
    HTTPClient http;
    float x = 30.5;
    float y = 78;
       
    http.begin(serverName);
    http.addHeader("Content-Type", "application/x-www-form-urlencoded");
    String httpRequestData = "field1=" + String(x) + "&field2=" + String(y);
    Serial.println(httpRequestData);
    int httpResponseCode = http.POST(httpRequestData);

    if (httpResponseCode > 0) {
      Serial.print("HTTP Response code: "); Serial.println(httpResponseCode);
      String payload = http.getString();
      Serial.println(payload);
    }
    else {
      Serial.print("Error code: "); Serial.println(httpResponseCode);
    }
    http.end();
  }
  else {
    Serial.println("WiFi Disconnected");
  }
  delay(3000);
}