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/*
* Copyright (c) 2019 Cisco and/or its affiliates.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#pragma once
#include <hicn/transport/core/packet.h>
#define ASIO_STANDALONE
#include <asio.hpp>
#include <deque>
#include <functional>
namespace transport {
using asio::ip::tcp;
typedef std::function<void(const uint8_t *data, std::size_t size, bool is_last,
bool headers)>
ContentReceivedCallback;
typedef std::function<void()> OnReconnect;
typedef std::function<void()> ContentSentCallback;
typedef std::deque<
std::pair<std::unique_ptr<utils::MemBuf>, ContentSentCallback>>
BufferQueue;
class ATSConnector {
static constexpr uint32_t buffer_size = 1024 * 512;
enum class ConnectorState {
CLOSED,
CONNECTING,
CONNECTED,
};
public:
ATSConnector(asio::io_service &io_service, std::string &ip_address,
std::string &port, ContentReceivedCallback receive_callback,
OnReconnect on_reconnect_callback);
~ATSConnector();
void send(const uint8_t *buffer, std::size_t len,
ContentSentCallback &&content_sent = 0);
void send(utils::MemBuf *buffer, ContentSentCallback &&content_sent);
void close();
private:
void doConnect();
void doReadHeader();
void doReadBody(std::size_t body_size, std::size_t additional_bytes);
void doWrite();
bool checkConnected();
private:
void handleRead(std::error_code ec, std::size_t length, std::size_t bytes);
void tryReconnection();
void startConnectionTimer();
void handleDeadline(const std::error_code &ec);
asio::io_service &io_service_;
asio::ip::tcp::socket socket_;
asio::ip::tcp::resolver resolver_;
asio::ip::tcp::resolver::iterator endpoint_iterator_;
asio::steady_timer timer_;
BufferQueue write_msgs_;
asio::streambuf input_buffer_;
bool is_reconnection_;
bool data_available_;
ContentReceivedCallback receive_callback_;
OnReconnect on_reconnect_callback_;
// Connector state
ConnectorState state_;
};
} // namespace transport
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