Method handleUpdate

libraries/HTTPUpdate/src/HTTPUpdate.cpp:193–433

* * @param http HTTPClient * * @param currentVersion const char * * @return HTTPUpdateResult */

 * @return HTTPUpdateResult
 */
HTTPUpdateResult HTTPUpdate::handleUpdate(HTTPClient &http, const String &currentVersion, uint8_t type, HTTPUpdateRequestCB requestCB) {

  HTTPUpdateResult ret = HTTP_UPDATE_FAILED;

  // use HTTP/1.0 for update since the update handler not support any transfer Encoding
  http.useHTTP10(true);
  http.setTimeout(_httpClientTimeout);
  http.setFollowRedirects(_followRedirects);
  http.setUserAgent("ESP32-http-Update");
  http.addHeader("Cache-Control", "no-cache");
  http.addHeader("x-ESP32-BASE-MAC", Network.macAddress());
#if SOC_WIFI_SUPPORTED
  http.addHeader("x-ESP32-STA-MAC", WiFi.macAddress());
  http.addHeader("x-ESP32-AP-MAC", WiFi.softAPmacAddress());
#endif
  http.addHeader("x-ESP32-free-space", String(ESP.getFreeSketchSpace()));
  http.addHeader("x-ESP32-sketch-size", String(ESP.getSketchSize()));
  String sketchMD5 = ESP.getSketchMD5();
  if (sketchMD5.length() != 0) {
    http.addHeader("x-ESP32-sketch-md5", sketchMD5);
  }
  // Add also a SHA256
  String sketchSHA256 = getSketchSHA256();
  if (sketchSHA256.length() != 0) {
    http.addHeader("x-ESP32-sketch-sha256", sketchSHA256);
  }
  http.addHeader("x-ESP32-chip-size", String(ESP.getFlashChipSize()));
  http.addHeader("x-ESP32-sdk-version", ESP.getSdkVersion());

  if (type == U_SPIFFS) {
    http.addHeader("x-ESP32-mode", "spiffs");
  } else if (type == U_FATFS) {
    http.addHeader("x-ESP32-mode", "fatfs");
  } else if (type == U_LITTLEFS) {
    http.addHeader("x-ESP32-mode", "littlefs");
  } else if (type == U_FLASHFS) {
    http.addHeader("x-ESP32-mode", "flashfs");
  } else {
    http.addHeader("x-ESP32-mode", "sketch");
  }

  if (currentVersion && currentVersion[0] != 0x00) {
    http.addHeader("x-ESP32-version", currentVersion);
  }
  if (requestCB) {
    requestCB(&http);
  }

  if (!_user.isEmpty() && !_password.isEmpty()) {
    http.setAuthorization(_user.c_str(), _password.c_str());
  }

  if (!_auth.isEmpty()) {
    http.setAuthorization(_auth.c_str());
  }

  const char *headerkeys[] = {"x-MD5"};
  size_t headerkeyssize = sizeof(headerkeys) / sizeof(char *);