Function FetchData

plugins/check_nscp_api.cpp:336–418

 */

static Dictionary::Ptr FetchData(const String& host, const String& port, const String& password,
	const String& endpoint)
{
	namespace beast = boost::beast;
	namespace http = beast::http;

	Shared<AsioTlsStream>::Ptr tlsStream;

	try {
		tlsStream = Connect(host, port);
	} catch (const std::exception& ex) {
		std::cerr << "Connection error: " << ex.what();
		throw ex;
	}

	Url::Ptr url;

	try {
		url = new Url(endpoint);
	} catch (const std::exception& ex) {
		std::cerr << "URL error: " << ex.what();
		throw ex;
	}

	url->SetScheme("https");
	url->SetHost(host);
	url->SetPort(port);

	// NSClient++ uses `time=1m&time=5m` instead of `time[]=1m&time[]=5m`
	url->SetArrayFormatUseBrackets(false);

	http::request<http::string_body> request (http::verb::get, std::string(url->Format(true)), 10);

	request.set(http::field::user_agent, "Icinga/check_nscp_api/" + String(VERSION));
	request.set(http::field::host, host + ":" + port);

	request.set(http::field::accept, "application/json");
	request.set("password", password);

	if (l_Debug) {
		std::cout << "Sending request to " << url->Format(false, false) << "'.\n";
	}

	try {
		http::write(*tlsStream, request);
		tlsStream->flush();
	} catch (const std::exception& ex) {
		std::cerr << "Cannot write HTTP request to REST API at URL '" << url->Format(false, false) << "': " << ex.what();
		throw ex;
	}

	beast::flat_buffer buffer;
	http::parser<false, http::string_body> p;

	try {
		HttpResponseReasonInjector<decltype(*tlsStream)> reasonInjector (*tlsStream);
		http::read(reasonInjector, buffer, p);
	} catch (const std::exception &ex) {