tdesktop/Telegram/SourceFiles/mtproto/connection_abstract.h

79 lines
2.1 KiB
C++

/*
This file is part of Telegram Desktop,
the official desktop application for the Telegram messaging service.
For license and copyright information please follow this link:
https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
*/
#pragma once
#include "mtproto/dc_options.h"
namespace MTP {
namespace internal {
class AbstractConnection : public QObject {
Q_OBJECT
public:
AbstractConnection(QThread *thread) : _sentEncrypted(false) {
moveToThread(thread);
}
AbstractConnection(const AbstractConnection &other) = delete;
AbstractConnection &operator=(const AbstractConnection &other) = delete;
virtual ~AbstractConnection() = 0;
// virtual constructor
static AbstractConnection *create(DcType type, QThread *thread);
void setSentEncrypted() {
_sentEncrypted = true;
}
virtual void sendData(mtpBuffer &buffer) = 0; // has size + 3, buffer[0] = len, buffer[1] = packetnum, buffer[last] = crc32
virtual void disconnectFromServer() = 0;
virtual void connectTcp(const DcOptions::Endpoint &endpoint) = 0;
virtual void connectHttp(const DcOptions::Endpoint &endpoint) = 0;
virtual bool isConnected() const = 0;
virtual bool usingHttpWait() {
return false;
}
virtual bool needHttpWait() {
return false;
}
virtual int32 debugState() const = 0;
virtual QString transport() const = 0;
using BuffersQueue = std::deque<mtpBuffer>;
BuffersQueue &received() {
return _receivedQueue;
}
// Used to emit error(...) with no real code from the server.
static constexpr auto kErrorCodeOther = -499;
signals:
void receivedData();
void receivedSome(); // to stop restart timer
void error(qint32 errorCodebool);
void connected();
void disconnected();
protected:
BuffersQueue _receivedQueue; // list of received packets, not processed yet
bool _sentEncrypted;
// first we always send fake MTPReq_pq to see if connection works at all
// we send them simultaneously through TCP/HTTP/IPv4/IPv6 to choose the working one
static mtpBuffer preparePQFake(const MTPint128 &nonce);
static MTPResPQ readPQFakeReply(const mtpBuffer &buffer);
};
} // namespace internal
} // namespace MTP