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/**
* Copyright (c) 2020 Paul-Louis Ageneau
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef RTC_WS_TRANSPORT_H
#define RTC_WS_TRANSPORT_H
#include "include.hpp"
#include "transport.hpp"
#if RTC_ENABLE_WEBSOCKET
namespace rtc {
class TcpTransport;
class TlsTransport;
class WsTransport : public Transport {
public:
WsTransport(std::shared_ptr<Transport> lower, string host, string path,
message_callback recvCallback, state_callback stateCallback);
~WsTransport();
void start() override;
bool stop() override;
bool send(message_ptr message) override;
void incoming(message_ptr message) override;
void close();
private:
enum Opcode : uint8_t {
CONTINUATION = 0,
TEXT_FRAME = 1,
BINARY_FRAME = 2,
CLOSE = 8,
PING = 9,
PONG = 10,
};
struct Frame {
Opcode opcode = BINARY_FRAME;
byte *payload = nullptr;
size_t length = 0;
bool fin = true;
bool mask = true;
};
bool sendHttpRequest();
size_t readHttpResponse(const byte *buffer, size_t size);
size_t readFrame(byte *buffer, size_t size, Frame &frame);
void recvFrame(const Frame &frame);
bool sendFrame(const Frame &frame);
const string mHost;
const string mPath;
binary mBuffer;
binary mPartial;
Opcode mPartialOpcode;
};
} // namespace rtc
#endif
#endif