ReuseConnection.ino

/**
 * reuseConnection.ino
 *
 *  Created on: 22.11.2015
 *
 */

#include <Arduino.h>

#include <WiFi.h>
#include <WiFiMulti.h>

#include <HTTPClient.h>

#define USE_SERIAL Serial

WiFiMulti wifiMulti;

HTTPClient http;

void setup() {

  USE_SERIAL.begin(115200);

  USE_SERIAL.println();
  USE_SERIAL.println();
  USE_SERIAL.println();

  for (uint8_t t = 4; t > 0; t--) {
    USE_SERIAL.printf("[SETUP] WAIT %d...\n", t);
    USE_SERIAL.flush();
    delay(1000);
  }

  wifiMulti.addAP("SSID", "PASSWORD");

  // allow reuse (if server supports it)
  http.setReuse(true);
}

void loop() {
  // wait for WiFi connection
  if ((wifiMulti.run() == WL_CONNECTED)) {

    http.begin("http://192.168.1.12/test.html");
    //http.begin("192.168.1.12", 80, "/test.html");

    int httpCode = http.GET();
    if (httpCode > 0) {
      USE_SERIAL.printf("[HTTP] GET... code: %d\n", httpCode);

      // file found at server
      if (httpCode == HTTP_CODE_OK) {
        http.writeToStream(&USE_SERIAL);
      }
    } else {
      USE_SERIAL.printf("[HTTP] GET... failed, error: %s\n", http.errorToString(httpCode).c_str());
    }

    http.end();
  }

  delay(1000);
}