91 lines
2.7 KiB
C++
91 lines
2.7 KiB
C++
/*
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This file is part of Telegram Desktop,
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the official desktop version of Telegram messaging app, see https://telegram.org
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Telegram Desktop is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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It is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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In addition, as a special exception, the copyright holders give permission
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to link the code of portions of this program with the OpenSSL library.
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Full license: https://github.com/telegramdesktop/tdesktop/blob/master/LICENSE
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Copyright (c) 2014-2017 John Preston, https://desktop.telegram.org
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*/
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#pragma once
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#include "mtproto/dc_options.h"
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namespace MTP {
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namespace internal {
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class AbstractConnection : public QObject {
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Q_OBJECT
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public:
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AbstractConnection(QThread *thread) : _sentEncrypted(false) {
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moveToThread(thread);
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}
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AbstractConnection(const AbstractConnection &other) = delete;
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AbstractConnection &operator=(const AbstractConnection &other) = delete;
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virtual ~AbstractConnection() = 0;
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// virtual constructor
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static AbstractConnection *create(DcType type, QThread *thread);
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void setSentEncrypted() {
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_sentEncrypted = true;
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}
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virtual void sendData(mtpBuffer &buffer) = 0; // has size + 3, buffer[0] = len, buffer[1] = packetnum, buffer[last] = crc32
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virtual void disconnectFromServer() = 0;
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virtual void connectTcp(const DcOptions::Endpoint &endpoint) = 0;
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virtual void connectHttp(const DcOptions::Endpoint &endpoint) = 0;
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virtual bool isConnected() const = 0;
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virtual bool usingHttpWait() {
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return false;
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}
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virtual bool needHttpWait() {
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return false;
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}
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virtual int32 debugState() const = 0;
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virtual QString transport() const = 0;
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using BuffersQueue = std::deque<mtpBuffer>;
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BuffersQueue &received() {
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return _receivedQueue;
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}
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// Used to emit error(...) with no real code from the server.
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static constexpr auto kErrorCodeOther = -499;
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signals:
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void receivedData();
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void receivedSome(); // to stop restart timer
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void error(qint32 errorCodebool);
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void connected();
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void disconnected();
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protected:
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BuffersQueue _receivedQueue; // list of received packets, not processed yet
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bool _sentEncrypted;
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// first we always send fake MTPReq_pq to see if connection works at all
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// we send them simultaneously through TCP/HTTP/IPv4/IPv6 to choose the working one
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static mtpBuffer preparePQFake(const MTPint128 &nonce);
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static MTPResPQ readPQFakeReply(const mtpBuffer &buffer);
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};
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} // namespace internal
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} // namespace MTP
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