650 lines
18 KiB
C++
650 lines
18 KiB
C++
/*
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This file is part of Telegram Desktop,
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the official desktop application for the Telegram messaging service.
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For license and copyright information please follow this link:
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https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
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*/
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#include "mtproto/session.h"
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#include "mtproto/connection.h"
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#include "mtproto/dcenter.h"
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#include "mtproto/auth_key.h"
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#include "core/crash_reports.h"
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namespace MTP {
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namespace internal {
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namespace {
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QString LogIds(const QVector<uint64> &ids) {
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if (!ids.size()) return "[]";
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auto idsStr = QString("[%1").arg(*ids.cbegin());
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for (const auto id : ids) {
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idsStr += QString(", %2").arg(id);
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}
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return idsStr + "]";
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}
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} // namespace
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ConnectionOptions::ConnectionOptions(
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const QString &systemLangCode,
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const QString &cloudLangCode,
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const ProxyData &proxy,
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bool useIPv4,
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bool useIPv6,
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bool useHttp,
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bool useTcp)
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: systemLangCode(systemLangCode)
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, cloudLangCode(cloudLangCode)
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, proxy(proxy)
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, useIPv4(useIPv4)
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, useIPv6(useIPv6)
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, useHttp(useHttp)
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, useTcp(useTcp) {
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}
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void SessionData::setKey(const AuthKeyPtr &key) {
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if (_authKey != key) {
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uint64 session = rand_value<uint64>();
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_authKey = key;
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DEBUG_LOG(("MTP Info: new auth key set in SessionData, id %1, setting random server_session %2").arg(key ? key->keyId() : 0).arg(session));
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QWriteLocker locker(&_lock);
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if (_session != session) {
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_session = session;
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_messagesSent = 0;
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}
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_layerInited = false;
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}
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}
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void SessionData::notifyConnectionInited(const ConnectionOptions &options) {
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QWriteLocker locker(&_lock);
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if (options.cloudLangCode == _options.cloudLangCode
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&& options.systemLangCode == _options.systemLangCode
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&& options.proxy == _options.proxy
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&& !_options.inited) {
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_options.inited = true;
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locker.unlock();
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owner()->notifyDcConnectionInited();
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}
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}
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void SessionData::clear(Instance *instance) {
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auto clearCallbacks = std::vector<RPCCallbackClear>();
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{
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QReadLocker locker1(haveSentMutex()), locker2(toResendMutex()), locker3(haveReceivedMutex()), locker4(wereAckedMutex());
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auto receivedResponsesEnd = _receivedResponses.cend();
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clearCallbacks.reserve(_haveSent.size() + _wereAcked.size());
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for (auto i = _haveSent.cbegin(), e = _haveSent.cend(); i != e; ++i) {
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auto requestId = i.value()->requestId;
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if (!_receivedResponses.contains(requestId)) {
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clearCallbacks.push_back(requestId);
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}
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}
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for (auto i = _toResend.cbegin(), e = _toResend.cend(); i != e; ++i) {
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auto requestId = i.value();
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if (!_receivedResponses.contains(requestId)) {
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clearCallbacks.push_back(requestId);
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}
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}
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for (auto i = _wereAcked.cbegin(), e = _wereAcked.cend(); i != e; ++i) {
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auto requestId = i.value();
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if (!_receivedResponses.contains(requestId)) {
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clearCallbacks.push_back(requestId);
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}
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}
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}
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{
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QWriteLocker locker(haveSentMutex());
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_haveSent.clear();
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}
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{
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QWriteLocker locker(toResendMutex());
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_toResend.clear();
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}
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{
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QWriteLocker locker(wereAckedMutex());
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_wereAcked.clear();
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}
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{
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QWriteLocker locker(receivedIdsMutex());
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_receivedIds.clear();
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}
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instance->clearCallbacksDelayed(std::move(clearCallbacks));
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}
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Session::Session(not_null<Instance*> instance, ShiftedDcId shiftedDcId) : QObject()
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, _instance(instance)
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, data(this)
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, dcWithShift(shiftedDcId) {
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connect(&timeouter, SIGNAL(timeout()), this, SLOT(checkRequestsByTimer()));
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timeouter.start(1000);
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refreshOptions();
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connect(&sender, SIGNAL(timeout()), this, SLOT(needToResumeAndSend()));
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}
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void Session::start() {
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createDcData();
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_connection = std::make_unique<Connection>(_instance);
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_connection->start(&data, dcWithShift);
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if (_instance->isKeysDestroyer()) {
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_instance->scheduleKeyDestroy(dcWithShift);
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}
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}
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void Session::createDcData() {
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if (dc) {
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return;
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}
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dc = _instance->getDcById(dcWithShift);
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if (auto lock = ReadLockerAttempt(keyMutex())) {
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data.setKey(dc->getKey());
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if (dc->connectionInited()) {
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data.setConnectionInited();
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}
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}
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connect(dc.get(), SIGNAL(authKeyCreated()), this, SLOT(authKeyCreatedForDC()), Qt::QueuedConnection);
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connect(dc.get(), SIGNAL(connectionWasInited()), this, SLOT(connectionWasInitedForDC()), Qt::QueuedConnection);
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}
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void Session::registerRequest(mtpRequestId requestId, ShiftedDcId dcWithShift) {
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return _instance->registerRequest(requestId, dcWithShift);
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}
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mtpRequestId Session::storeRequest(
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mtpRequest &request,
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RPCResponseHandler &&callbacks) {
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return _instance->storeRequest(request, std::move(callbacks));
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}
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mtpRequest Session::getRequest(mtpRequestId requestId) {
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return _instance->getRequest(requestId);
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}
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bool Session::rpcErrorOccured(mtpRequestId requestId, const RPCFailHandlerPtr &onFail, const RPCError &err) { // return true if need to clean request data
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return _instance->rpcErrorOccured(requestId, onFail, err);
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}
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void Session::restart() {
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if (_killed) {
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DEBUG_LOG(("Session Error: can't restart a killed session"));
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return;
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}
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refreshOptions();
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emit needToRestart();
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}
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void Session::refreshOptions() {
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const auto &proxy = Global::SelectedProxy();
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const auto proxyType = Global::UseProxy()
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? proxy.type
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: ProxyData::Type::None;
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const auto useTcp = (proxyType != ProxyData::Type::Http);
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const auto useHttp = (proxyType != ProxyData::Type::Mtproto);
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const auto useIPv4 = true;
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const auto useIPv6 = Global::TryIPv6();
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data.applyConnectionOptions(ConnectionOptions(
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_instance->systemLangCode(),
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_instance->cloudLangCode(),
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Global::UseProxy() ? proxy : ProxyData(),
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useIPv4,
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useIPv6,
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useHttp,
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useTcp));
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}
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void Session::reInitConnection() {
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dc->setConnectionInited(false);
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data.setConnectionInited(false);
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restart();
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}
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void Session::stop() {
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if (_killed) {
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DEBUG_LOG(("Session Error: can't kill a killed session"));
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return;
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}
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DEBUG_LOG(("Session Info: stopping session dcWithShift %1").arg(dcWithShift));
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if (_connection) {
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_connection->kill();
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_instance->queueQuittingConnection(std::move(_connection));
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}
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}
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void Session::kill() {
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stop();
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_killed = true;
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DEBUG_LOG(("Session Info: marked session dcWithShift %1 as killed").arg(dcWithShift));
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}
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void Session::unpaused() {
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if (_needToReceive) {
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_needToReceive = false;
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QTimer::singleShot(0, this, SLOT(tryToReceive()));
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}
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}
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void Session::sendAnything(qint64 msCanWait) {
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if (_killed) {
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DEBUG_LOG(("Session Error: can't send anything in a killed session"));
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return;
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}
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auto ms = getms(true);
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if (msSendCall) {
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if (ms > msSendCall + msWait) {
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msWait = 0;
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} else {
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msWait = (msSendCall + msWait) - ms;
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if (msWait > msCanWait) {
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msWait = msCanWait;
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}
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}
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} else {
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msWait = msCanWait;
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}
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if (msWait) {
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DEBUG_LOG(("MTP Info: dcWithShift %1 can wait for %2ms from current %3").arg(dcWithShift).arg(msWait).arg(msSendCall));
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msSendCall = ms;
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sender.start(msWait);
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} else {
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DEBUG_LOG(("MTP Info: dcWithShift %1 stopped send timer, can wait for %2ms from current %3").arg(dcWithShift).arg(msWait).arg(msSendCall));
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sender.stop();
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msSendCall = 0;
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needToResumeAndSend();
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}
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}
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void Session::needToResumeAndSend() {
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if (_killed) {
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DEBUG_LOG(("Session Info: can't resume a killed session"));
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return;
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}
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if (!_connection) {
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DEBUG_LOG(("Session Info: resuming session dcWithShift %1").arg(dcWithShift));
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createDcData();
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_connection = std::make_unique<Connection>(_instance);
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_connection->start(&data, dcWithShift);
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}
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if (_ping) {
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_ping = false;
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emit needToPing();
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} else {
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emit needToSend();
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}
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}
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void Session::sendPong(quint64 msgId, quint64 pingId) {
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send(mtpRequestData::serialize(MTPPong(MTP_pong(
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MTP_long(msgId),
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MTP_long(pingId)))));
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}
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void Session::sendMsgsStateInfo(quint64 msgId, QByteArray data) {
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auto info = std::string();
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if (!data.isEmpty()) {
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info.resize(data.size());
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auto src = gsl::as_bytes(gsl::make_span(data));
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// auto dst = gsl::as_writeable_bytes(gsl::make_span(info));
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auto dst = gsl::as_writeable_bytes(gsl::make_span(&info[0], info.size()));
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base::copy_bytes(dst, src);
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}
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send(mtpRequestData::serialize(MTPMsgsStateInfo(
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MTP_msgs_state_info(MTP_long(msgId), MTP_string(std::move(info))))));
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}
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void Session::checkRequestsByTimer() {
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QVector<mtpMsgId> resendingIds;
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QVector<mtpMsgId> removingIds; // remove very old (10 minutes) containers and resend requests
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QVector<mtpMsgId> stateRequestIds;
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{
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QReadLocker locker(data.haveSentMutex());
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mtpRequestMap &haveSent(data.haveSentMap());
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uint32 haveSentCount(haveSent.size());
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auto ms = getms(true);
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for (mtpRequestMap::iterator i = haveSent.begin(), e = haveSent.end(); i != e; ++i) {
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mtpRequest &req(i.value());
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if (req->msDate > 0) {
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if (req->msDate + MTPCheckResendTimeout < ms) { // need to resend or check state
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if (mtpRequestData::messageSize(req) < MTPResendThreshold) { // resend
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resendingIds.reserve(haveSentCount);
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resendingIds.push_back(i.key());
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} else {
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req->msDate = ms;
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stateRequestIds.reserve(haveSentCount);
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stateRequestIds.push_back(i.key());
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}
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}
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} else if (unixtime() > (int32)(i.key() >> 32) + MTPContainerLives) {
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removingIds.reserve(haveSentCount);
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removingIds.push_back(i.key());
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}
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}
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}
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if (stateRequestIds.size()) {
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DEBUG_LOG(("MTP Info: requesting state of msgs: %1").arg(LogIds(stateRequestIds)));
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{
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QWriteLocker locker(data.stateRequestMutex());
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for (uint32 i = 0, l = stateRequestIds.size(); i < l; ++i) {
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data.stateRequestMap().insert(stateRequestIds[i], true);
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}
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}
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sendAnything(MTPCheckResendWaiting);
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}
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if (!resendingIds.isEmpty()) {
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for (uint32 i = 0, l = resendingIds.size(); i < l; ++i) {
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DEBUG_LOG(("MTP Info: resending request %1").arg(resendingIds[i]));
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resend(resendingIds[i], MTPCheckResendWaiting);
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}
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}
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if (!removingIds.isEmpty()) {
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auto clearCallbacks = std::vector<RPCCallbackClear>();
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{
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QWriteLocker locker(data.haveSentMutex());
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auto &haveSent = data.haveSentMap();
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for (uint32 i = 0, l = removingIds.size(); i < l; ++i) {
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auto j = haveSent.find(removingIds[i]);
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if (j != haveSent.cend()) {
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if (j.value()->requestId) {
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clearCallbacks.push_back(j.value()->requestId);
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}
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haveSent.erase(j);
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}
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}
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}
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_instance->clearCallbacksDelayed(std::move(clearCallbacks));
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}
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}
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void Session::onConnectionStateChange(qint32 newState) {
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_instance->onStateChange(dcWithShift, newState);
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}
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void Session::onResetDone() {
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_instance->onSessionReset(dcWithShift);
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}
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void Session::cancel(mtpRequestId requestId, mtpMsgId msgId) {
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if (requestId) {
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QWriteLocker locker(data.toSendMutex());
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data.toSendMap().remove(requestId);
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}
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if (msgId) {
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QWriteLocker locker(data.haveSentMutex());
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data.haveSentMap().remove(msgId);
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}
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}
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void Session::ping() {
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_ping = true;
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sendAnything(0);
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}
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int32 Session::requestState(mtpRequestId requestId) const {
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int32 result = MTP::RequestSent;
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bool connected = false;
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if (_connection) {
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int32 s = _connection->state();
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if (s == ConnectedState) {
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connected = true;
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} else if (s == ConnectingState || s == DisconnectedState) {
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if (result < 0 || result == MTP::RequestSent) {
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result = MTP::RequestConnecting;
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}
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} else if (s < 0) {
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if ((result < 0 && s > result) || result == MTP::RequestSent) {
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result = s;
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}
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}
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}
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if (!connected) {
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return result;
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}
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if (!requestId) return MTP::RequestSent;
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QWriteLocker locker(data.toSendMutex());
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const mtpPreRequestMap &toSend(data.toSendMap());
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mtpPreRequestMap::const_iterator i = toSend.constFind(requestId);
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if (i != toSend.cend()) {
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return MTP::RequestSending;
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} else {
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return MTP::RequestSent;
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}
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}
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int32 Session::getState() const {
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int32 result = -86400000;
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if (_connection) {
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int32 s = _connection->state();
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if (s == ConnectedState) {
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return s;
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} else if (s == ConnectingState || s == DisconnectedState) {
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if (result < 0) {
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return s;
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}
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} else if (s < 0) {
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if (result < 0 && s > result) {
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result = s;
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}
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}
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}
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if (result == -86400000) {
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result = DisconnectedState;
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}
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return result;
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}
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QString Session::transport() const {
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return _connection ? _connection->transport() : QString();
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}
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mtpRequestId Session::resend(quint64 msgId, qint64 msCanWait, bool forceContainer, bool sendMsgStateInfo) {
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mtpRequest request;
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{
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QWriteLocker locker(data.haveSentMutex());
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mtpRequestMap &haveSent(data.haveSentMap());
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auto i = haveSent.find(msgId);
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if (i == haveSent.end()) {
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if (sendMsgStateInfo) {
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char cantResend[2] = {1, 0};
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DEBUG_LOG(("Message Info: cant resend %1, request not found").arg(msgId));
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auto info = std::string(cantResend, cantResend + 1);
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return send(mtpRequestData::serialize(MTPMsgsStateInfo(
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MTP_msgs_state_info(
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MTP_long(msgId),
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MTP_string(std::move(info))))));
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}
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return 0;
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}
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request = i.value();
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haveSent.erase(i);
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}
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if (mtpRequestData::isSentContainer(request)) { // for container just resend all messages we can
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DEBUG_LOG(("Message Info: resending container from haveSent, msgId %1").arg(msgId));
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const mtpMsgId *ids = (const mtpMsgId *)(request->constData() + 8);
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for (uint32 i = 0, l = (request->size() - 8) >> 1; i < l; ++i) {
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resend(ids[i], 10, true);
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}
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return 0xFFFFFFFF;
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} else if (!mtpRequestData::isStateRequest(request)) {
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request->msDate = forceContainer ? 0 : getms(true);
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sendPrepared(request, msCanWait, false);
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{
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QWriteLocker locker(data.toResendMutex());
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data.toResendMap().insert(msgId, request->requestId);
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}
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return request->requestId;
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} else {
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return 0;
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}
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}
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void Session::resendMany(QVector<quint64> msgIds, qint64 msCanWait, bool forceContainer, bool sendMsgStateInfo) {
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for (int32 i = 0, l = msgIds.size(); i < l; ++i) {
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resend(msgIds.at(i), msCanWait, forceContainer, sendMsgStateInfo);
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}
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}
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void Session::resendAll() {
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QVector<mtpMsgId> toResend;
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{
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QReadLocker locker(data.haveSentMutex());
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const mtpRequestMap &haveSent(data.haveSentMap());
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toResend.reserve(haveSent.size());
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for (mtpRequestMap::const_iterator i = haveSent.cbegin(), e = haveSent.cend(); i != e; ++i) {
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if (i.value()->requestId) toResend.push_back(i.key());
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}
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}
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for (uint32 i = 0, l = toResend.size(); i < l; ++i) {
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resend(toResend[i], 10, true);
|
|
}
|
|
}
|
|
|
|
mtpRequestId Session::send(
|
|
mtpRequest &&request,
|
|
RPCResponseHandler &&callbacks,
|
|
TimeMs msCanWait,
|
|
bool needsLayer,
|
|
bool toMainDC,
|
|
mtpRequestId after) {
|
|
DEBUG_LOG(("MTP Info: adding request to toSendMap, msCanWait %1").arg(msCanWait));
|
|
|
|
request->msDate = getms(true); // > 0 - can send without container
|
|
request->needsLayer = needsLayer;
|
|
if (after) {
|
|
request->after = getRequest(after);
|
|
}
|
|
const auto requestId = storeRequest(request, std::move(callbacks));
|
|
Assert(requestId != 0);
|
|
|
|
const auto signedDcId = toMainDC ? -getDcWithShift() : getDcWithShift();
|
|
sendPrepared(request, msCanWait);
|
|
registerRequest(requestId, signedDcId);
|
|
|
|
return requestId;
|
|
}
|
|
|
|
void Session::sendPrepared(const mtpRequest &request, TimeMs msCanWait, bool newRequest) { // returns true, if emit of needToSend() is needed
|
|
{
|
|
QWriteLocker locker(data.toSendMutex());
|
|
data.toSendMap().insert(request->requestId, request);
|
|
|
|
if (newRequest) {
|
|
*(mtpMsgId*)(request->data() + 4) = 0;
|
|
*(request->data() + 6) = 0;
|
|
}
|
|
}
|
|
|
|
DEBUG_LOG(("MTP Info: added, requestId %1").arg(request->requestId));
|
|
|
|
sendAnything(msCanWait);
|
|
}
|
|
|
|
QReadWriteLock *Session::keyMutex() const {
|
|
return dc->keyMutex();
|
|
}
|
|
|
|
void Session::authKeyCreatedForDC() {
|
|
DEBUG_LOG(("AuthKey Info: Session::authKeyCreatedForDC slot, emitting authKeyCreated(), dcWithShift %1").arg(dcWithShift));
|
|
data.setKey(dc->getKey());
|
|
emit authKeyCreated();
|
|
}
|
|
|
|
void Session::notifyKeyCreated(AuthKeyPtr &&key) {
|
|
DEBUG_LOG(("AuthKey Info: Session::keyCreated(), setting, dcWithShift %1").arg(dcWithShift));
|
|
dc->setKey(std::move(key));
|
|
}
|
|
|
|
void Session::connectionWasInitedForDC() {
|
|
DEBUG_LOG(("MTP Info: Session::connectionWasInitedForDC slot, dcWithShift %1").arg(dcWithShift));
|
|
data.setConnectionInited();
|
|
}
|
|
|
|
void Session::notifyDcConnectionInited() {
|
|
DEBUG_LOG(("MTP Info: emitting MTProtoDC::connectionWasInited(), dcWithShift %1").arg(dcWithShift));
|
|
dc->setConnectionInited();
|
|
emit dc->connectionWasInited();
|
|
}
|
|
|
|
void Session::destroyKey() {
|
|
if (!dc) return;
|
|
|
|
if (data.getKey()) {
|
|
DEBUG_LOG(("MTP Info: destroying auth_key for dcWithShift %1").arg(dcWithShift));
|
|
if (data.getKey() == dc->getKey()) {
|
|
dc->destroyKey();
|
|
}
|
|
data.setKey(AuthKeyPtr());
|
|
}
|
|
}
|
|
|
|
int32 Session::getDcWithShift() const {
|
|
return dcWithShift;
|
|
}
|
|
|
|
void Session::tryToReceive() {
|
|
if (_killed) {
|
|
DEBUG_LOG(("Session Error: can't receive in a killed session"));
|
|
return;
|
|
}
|
|
if (paused()) {
|
|
_needToReceive = true;
|
|
return;
|
|
}
|
|
while (true) {
|
|
auto requestId = mtpRequestId(0);
|
|
auto isUpdate = false;
|
|
auto message = SerializedMessage();
|
|
{
|
|
QWriteLocker locker(data.haveReceivedMutex());
|
|
auto &responses = data.haveReceivedResponses();
|
|
auto response = responses.begin();
|
|
if (response == responses.cend()) {
|
|
auto &updates = data.haveReceivedUpdates();
|
|
auto update = updates.begin();
|
|
if (update == updates.cend()) {
|
|
return;
|
|
} else {
|
|
message = std::move(*update);
|
|
isUpdate = true;
|
|
updates.pop_front();
|
|
}
|
|
} else {
|
|
requestId = response.key();
|
|
message = std::move(response.value());
|
|
responses.erase(response);
|
|
}
|
|
}
|
|
if (isUpdate) {
|
|
if (dcWithShift == bareDcId(dcWithShift)) { // call globalCallback only in main session
|
|
_instance->globalCallback(message.constData(), message.constData() + message.size());
|
|
}
|
|
} else {
|
|
_instance->execCallback(requestId, message.constData(), message.constData() + message.size());
|
|
}
|
|
}
|
|
}
|
|
|
|
Session::~Session() {
|
|
Assert(_connection == nullptr);
|
|
}
|
|
|
|
MTPrpcError rpcClientError(const QString &type, const QString &description) {
|
|
return MTP_rpc_error(MTP_int(0), MTP_string(("CLIENT_" + type + (description.length() ? (": " + description) : "")).toUtf8().constData()));
|
|
}
|
|
|
|
} // namespace internal
|
|
} // namespace MTP
|