Method begin

libraries/HTTPClient/src/HTTPClient.cpp:114–147

* parsing the url for all needed parameters * @param client Client& * @param url String * @param https bool * @return success bool */

 * @return success bool
 */
bool HTTPClient::begin(NetworkClient &client, String url) {
#ifdef HTTPCLIENT_1_1_COMPATIBLE
  if (_tcpDeprecated) {
    log_d("mix up of new and deprecated api");
    _canReuse = false;
    end();
  }
#endif

  _client = &client;

  // check for : (http: or https:)
  int index = url.indexOf(':');
  if (index < 0) {
    log_d("failed to parse protocol");
    return false;
  }

  String protocol = url.substring(0, index);
  if (protocol != "http" && protocol != "https") {
    log_d("unknown protocol '%s'", protocol.c_str());
    return false;
  }

  _port = (protocol == "https" ? 443 : 80);
  _secure = (protocol == "https");

#ifdef HTTPCLIENT_NOSECURE
  if (_secure) {
    return false;
  }
#endif  // HTTPCLIENT_NOSECURE
  return beginInternal(url, protocol.c_str());
}

/**
 * directly supply all needed parameters