C++ HTTPResponse::get方法代码示例

/** Process any HTTP errors states.

@param res : The http response
@param rs : The iutput stream from the response
@param url : The url originally called

@exception Mantid::Kernel::Exception::InternetError : Coded for the failure
state.
*/
int InternetHelper::processErrorStates(const Poco::Net::HTTPResponse &res,
                                       std::istream &rs,
                                       const std::string &url) {
  int retStatus = res.getStatus();
  g_log.debug() << "Answer from web: " << res.getStatus() << " "
                << res.getReason() << std::endl;

  // get github api rate limit information if available;
  int rateLimitRemaining;
  DateAndTime rateLimitReset;
  try {
    rateLimitRemaining =
        boost::lexical_cast<int>(res.get("X-RateLimit-Remaining", "-1"));
    rateLimitReset.set_from_time_t(
        boost::lexical_cast<int>(res.get("X-RateLimit-Reset", "0")));
  } catch (boost::bad_lexical_cast const &) {
    rateLimitRemaining = -1;
  }

  if (retStatus == HTTP_OK) {
    throw Exception::InternetError("Response was ok, processing should never "
                                   "have entered processErrorStates",
                                   retStatus);
  } else if (retStatus == HTTP_FOUND) {
    throw Exception::InternetError("Response was HTTP_FOUND, processing should "
                                   "never have entered processErrorStates",
                                   retStatus);
  } else if (retStatus == HTTP_MOVED_PERMANENTLY) {
    throw Exception::InternetError("Response was HTTP_MOVED_PERMANENTLY, "
                                   "processing should never have entered "
                                   "processErrorStates",
                                   retStatus);
  } else if (retStatus == HTTP_NOT_MODIFIED) {
    throw Exception::InternetError("Not modified since provided date" +
                                       rateLimitReset.toSimpleString(),
                                   retStatus);
  } else if ((retStatus == HTTP_FORBIDDEN) && (rateLimitRemaining == 0)) {
    throw Exception::InternetError(
        "The Github API rate limit has been reached, try again after " +
            rateLimitReset.toSimpleString(),
        retStatus);
  } else {
    std::stringstream info;
    std::stringstream ss;
    Poco::StreamCopier::copyStream(rs, ss);
    if (retStatus == HTTP_NOT_FOUND)
      info << "Failed to download " << url << " with the link "
           << "<a href=\"" << url << "\">.\n"
           << "Hint. Check that link is correct</a>";
    else {
      // show the error
      info << res.getReason();
      info << ss.str();
      g_log.debug() << ss.str();
    }
    throw Exception::InternetError(info.str() + ss.str(), retStatus);
  }
}

void LocalPortForwarder::forward(Poco::Net::StreamSocket& socket)
{
	if (_logger.debug())
	{
		_logger.debug(Poco::format("Local connection accepted, creating forwarding connection to %s, remote port %hu", _remoteURI.toString(), _remotePort));
	}
	try
	{
		std::string path(_remoteURI.getPathEtc());
		if (path.empty()) path = "/";
		Poco::Net::HTTPRequest request(Poco::Net::HTTPRequest::HTTP_POST, path, Poco::Net::HTTPRequest::HTTP_1_1);
		request.set(SEC_WEBSOCKET_PROTOCOL, WEBTUNNEL_PROTOCOL);
		request.set(X_WEBTUNNEL_REMOTEPORT, Poco::NumberFormatter::format(_remotePort));
		Poco::Net::HTTPResponse response;
		Poco::SharedPtr<Poco::Net::WebSocket> pWebSocket = _pWebSocketFactory->createWebSocket(_remoteURI, request, response);
		if (response.get(SEC_WEBSOCKET_PROTOCOL, "") != WEBTUNNEL_PROTOCOL)
		{
			_logger.error("The remote host does not support the WebTunnel protocol.");
			pWebSocket->shutdown(Poco::Net::WebSocket::WS_PROTOCOL_ERROR);
			pWebSocket->close();
			socket.close();
			return;
		}

		_pDispatcher->addSocket(socket, new StreamSocketToWebSocketForwarder(_pDispatcher, pWebSocket), _localTimeout);
		_pDispatcher->addSocket(*pWebSocket, new WebSocketToStreamSocketForwarder(_pDispatcher, socket), _remoteTimeout);
	}
	catch (Poco::Exception& exc)
	{
		_logger.error(Poco::format("Failed to open forwarding connection: %s", exc.displayText()));
		socket.close();
	}
}

void GitHubApiHelper::processResponseHeaders(
    const Poco::Net::HTTPResponse &res) {
  // get github api rate limit information if available;
  int rateLimitRemaining = 0;
  int rateLimitLimit;
  DateAndTime rateLimitReset;
  try {
    rateLimitLimit =
        boost::lexical_cast<int>(res.get("X-RateLimit-Limit", "-1"));
    rateLimitRemaining =
        boost::lexical_cast<int>(res.get("X-RateLimit-Remaining", "-1"));
    rateLimitReset.set_from_time_t(
        boost::lexical_cast<int>(res.get("X-RateLimit-Reset", "0")));
  } catch (boost::bad_lexical_cast const &) {
    rateLimitLimit = -1;
  }
  if (rateLimitLimit > -1) {
    g_log.debug() << "GitHub API " << rateLimitRemaining << " of "
                  << rateLimitLimit << " calls left. Resets at "
                  << rateLimitReset.toSimpleString() << " GMT\n";
  }
}