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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>
#include "HTTP1.xMessageFastParser.h"
#define ASIO_STANDALONE
#include <asio.hpp>
#include <deque>
#include <functional>
namespace transport {
using asio::ip::tcp;
struct Metadata;
typedef std::function<void(const uint8_t *data, std::size_t size, bool is_last,
bool headers, Metadata *metadata)>
ContentReceivedCallback;
typedef std::function<bool(asio::ip::tcp::socket &socket)> OnConnectionClosed;
typedef std::function<void()> ContentSentCallback;
typedef std::deque<
std::pair<std::unique_ptr<utils::MemBuf>, ContentSentCallback>>
BufferQueue;
struct Metadata {
std::string http_version;
HTTPHeaders headers;
};
struct RequestMetadata : Metadata {
std::string method;
std::string path;
};
struct ResponseMetadata : Metadata {
std::string status_code;
std::string status_string;
};
class HTTPClientConnectionCallback;
class HTTPSession {
friend class HTTPClientConnectionCallback;
static constexpr uint32_t buffer_size = 1024 * 512;
enum class ConnectorState {
CLOSED,
CONNECTING,
CONNECTED,
};
public:
HTTPSession(asio::io_service &io_service, std::string &ip_address,
std::string &port, ContentReceivedCallback receive_callback,
OnConnectionClosed on_reconnect_callback, bool client = false);
HTTPSession(asio::ip::tcp::socket socket,
ContentReceivedCallback receive_callback,
OnConnectionClosed on_reconnect_callback, bool client = true);
~HTTPSession();
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 doReadChunkedHeader();
void doWrite();
bool checkConnected();
private:
void handleRead(std::error_code ec, std::size_t length);
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 reverse_;
bool is_reconnection_;
bool data_available_;
std::size_t content_length_;
// Chunked encoding
bool is_last_chunk_;
bool chunked_;
ContentReceivedCallback receive_callback_;
OnConnectionClosed on_connection_closed_callback_;
// HTTP headers
std::unique_ptr<Metadata> header_info_;
// Connector state
ConnectorState state_;
};
} // namespace transport
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