Request history parts through Histories.

Telegram/SourceFiles/apiwrap.cpp

@@ -1012,34 +1012,6 @@ rpl::producer<bool> ApiWrap::dialogsLoadBlockedByDate() const {
 	return _dialogsLoadBlockedByDate.value();
 }
 
-void ApiWrap::requestFakeChatListMessage(
-		not_null<History*> history) {
-	if (_fakeChatListRequests.contains(history)) {
-		return;
-	}
-
-	_fakeChatListRequests.emplace(history);
-	request(MTPmessages_GetHistory(
-		history->peer->input,
-		MTP_int(0),  // offset_id
-		MTP_int(0),  // offset_date
-		MTP_int(0),  // add_offset
-		MTP_int(2),  // limit
-		MTP_int(0),  // max_id
-		MTP_int(0),  // min_id
-		MTP_int(0)
-	)).done([=](const MTPmessages_Messages &result) {
-		_fakeChatListRequests.erase(history);
-		history->setFakeChatListMessageFrom(result);
-	}).fail([=](const RPCError &error) {
-		_fakeChatListRequests.erase(history);
-		history->setFakeChatListMessageFrom(MTP_messages_messages(
-			MTP_vector<MTPMessage>(0),
-			MTP_vector<MTPChat>(0),
-			MTP_vector<MTPUser>(0)));
-	}).send();
-}
-
 void ApiWrap::requestWallPaper(
 		const QString &slug,
 		Fn<void(const Data::WallPaper &)> done,
@@ -3908,12 +3880,12 @@ void ApiWrap::requestSharedMedia(
 		SharedMediaType type,
 		MsgId messageId,
 		SliceType slice) {
-	auto key = std::make_tuple(peer, type, messageId, slice);
+	const auto key = std::make_tuple(peer, type, messageId, slice);
 	if (_sharedMediaRequests.contains(key)) {
 		return;
 	}
 
-	auto prepared = Api::PrepareSearchRequest(
+	const auto prepared = Api::PrepareSearchRequest(
 		peer,
 		type,
 		QString(),
@@ -3923,17 +3895,23 @@ void ApiWrap::requestSharedMedia(
 		return;
 	}
 
-	auto requestId = request(
-		std::move(*prepared)
-	).done([this, peer, type, messageId, slice](
-			const MTPmessages_Messages &result) {
-		auto key = std::make_tuple(peer, type, messageId, slice);
-		_sharedMediaRequests.remove(key);
-		sharedMediaDone(peer, type, messageId, slice, result);
-	}).fail([this, key](const RPCError &error) {
-		_sharedMediaRequests.remove(key);
-	}).send();
-	_sharedMediaRequests.emplace(key, requestId);
+	const auto history = session().data().history(peer);
+	auto &histories = history->owner().histories();
+	const auto requestType = Data::Histories::RequestType::History;
+	histories.sendRequest(history, requestType, [=](Fn<void()> finish) {
+		return request(
+			std::move(*prepared)
+		).done([=](const MTPmessages_Messages &result) {
+			const auto key = std::make_tuple(peer, type, messageId, slice);
+			_sharedMediaRequests.remove(key);
+			sharedMediaDone(peer, type, messageId, slice, result);
+			finish();
+		}).fail([=](const RPCError &error) {
+			_sharedMediaRequests.remove(key);
+			finish();
+		}).send();
+	});
+	_sharedMediaRequests.emplace(key);
 }
 
 void ApiWrap::sharedMediaDone(

Telegram/SourceFiles/apiwrap.h

@@ -177,7 +177,6 @@ public:
 	//void setFeedChannels(
 	//	not_null<Data::Feed*> feed,
 	//	const std::vector<not_null<ChannelData*>> &channels);
-	void requestFakeChatListMessage(not_null<History*> history);
 
 	void requestWallPaper(
 		const QString &slug,
@@ -739,15 +738,14 @@ private:
 
 	mtpRequestId _contactsRequestId = 0;
 	mtpRequestId _contactsStatusesRequestId = 0;
-	base::flat_set<not_null<History*>> _fakeChatListRequests;
 
 	base::flat_map<not_null<History*>, mtpRequestId> _unreadMentionsRequests;
 
-	base::flat_map<std::tuple<
+	base::flat_set<std::tuple<
 		not_null<PeerData*>,
 		SharedMediaType,
 		MsgId,
-		SliceType>, mtpRequestId> _sharedMediaRequests;
+		SliceType>> _sharedMediaRequests;
 
 	base::flat_map<not_null<UserData*>, mtpRequestId> _userPhotosRequests;
 

Telegram/SourceFiles/calls/calls_box_controller.h

@@ -44,7 +44,7 @@ private:
 	MTP::Sender _api;
 
 	MsgId _offsetId = 0;
-	mtpRequestId _loadRequestId = 0;
+	int _loadRequestId = 0; // Not a real mtpRequestId.
 	bool _allLoaded = false;
 
 };

Telegram/SourceFiles/data/data_histories.cpp

@@ -333,6 +333,38 @@ void Histories::changeDialogUnreadMark(
 	)).send();
 }
 
+void Histories::requestFakeChatListMessage(
+		not_null<History*> history) {
+	if (_fakeChatListRequests.contains(history)) {
+		return;
+	}
+
+	_fakeChatListRequests.emplace(history);
+	sendRequest(history, RequestType::History, [=](Fn<void()> finish) {
+		return session().api().request(MTPmessages_GetHistory(
+			history->peer->input,
+			MTP_int(0),  // offset_id
+			MTP_int(0),  // offset_date
+			MTP_int(0),  // add_offset
+			MTP_int(2),  // limit
+			MTP_int(0),  // max_id
+			MTP_int(0),  // min_id
+			MTP_int(0)
+		)).done([=](const MTPmessages_Messages &result) {
+			_fakeChatListRequests.erase(history);
+			history->setFakeChatListMessageFrom(result);
+			finish();
+		}).fail([=](const RPCError &error) {
+			_fakeChatListRequests.erase(history);
+			history->setFakeChatListMessageFrom(MTP_messages_messages(
+				MTP_vector<MTPMessage>(0),
+				MTP_vector<MTPChat>(0),
+				MTP_vector<MTPUser>(0)));
+			finish();
+		}).send();
+	});
+}
+
 void Histories::sendPendingReadInbox(not_null<History*> history) {
 	if (const auto state = lookup(history)) {
 		if (state->readTill

Telegram/SourceFiles/data/data_histories.h

@@ -56,6 +56,7 @@ public:
 	void dialogEntryApplied(not_null<History*> history);
 	void changeDialogUnreadMark(not_null<History*> history, bool unread);
 	//void changeDialogUnreadMark(not_null<Data::Feed*> feed, bool unread); // #feed
+	void requestFakeChatListMessage(not_null<History*> history);
 
 	void deleteMessages(
 		not_null<History*> history,
@@ -121,6 +122,8 @@ private:
 		not_null<History*>,
 		std::vector<Fn<void()>>> _dialogRequestsPending;
 
+	base::flat_set<not_null<History*>> _fakeChatListRequests;
+
 };
 
 } // namespace Data

Telegram/SourceFiles/data/data_search_controller.cpp

@@ -11,6 +11,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include "data/data_session.h"
 #include "data/data_messages.h"
 #include "data/data_channel.h"
+#include "data/data_histories.h"
 #include "history/history.h"
 #include "history/history_item.h"
 #include "apiwrap.h"
@@ -193,7 +194,8 @@ SearchController::CacheEntry::CacheEntry(const Query &query)
 }
 
 SearchController::SearchController(not_null<Main::Session*> session)
-: _api(session->api().instance()) {
+: _session(session)
+, _api(session->api().instance()) {
 }
 
 bool SearchController::hasInCache(const Query &query) const {
@@ -366,23 +368,32 @@ void SearchController::requestMore(
 	if (!prepared) {
 		return;
 	}
-	auto requestId = _api.request(
-		std::move(*prepared)
-	).done([=](const MTPmessages_Messages &result) {
-		listData->requests.remove(key);
-		auto parsed = ParseSearchResult(
-			listData->peer,
-			query.type,
-			key.aroundId,
-			key.direction,
-			result);
-		listData->list.addSlice(
-			std::move(parsed.messageIds),
-			parsed.noSkipRange,
-			parsed.fullCount);
-	}).send();
+	auto &histories = _session->data().histories();
+	const auto type = Histories::RequestType::History;
+	const auto history = _session->data().history(listData->peer);
+	auto requestId = histories.sendRequest(history, type, [=](Fn<void()> finish) {
+		return _api.request(
+			std::move(*prepared)
+		).done([=](const MTPmessages_Messages &result) {
+			listData->requests.remove(key);
+			auto parsed = ParseSearchResult(
+				listData->peer,
+				query.type,
+				key.aroundId,
+				key.direction,
+				result);
+			listData->list.addSlice(
+				std::move(parsed.messageIds),
+				parsed.noSkipRange,
+				parsed.fullCount);
+			finish();
+		}).fail([=](const RPCError &error) {
+			finish();
+		}).send();
+	});
 	listData->requests.emplace(key, [=] {
-		_api.request(requestId).cancel();
+		auto &histories = _session->data().histories();
+		histories.cancelRequest(history, requestId);
 	});
 }
 

Telegram/SourceFiles/data/data_search_controller.h

@@ -129,6 +129,7 @@ private:
 		const Query &query,
 		Data *listData);
 
+	const not_null<Main::Session*> _session;
 	MTP::Sender _api;
 	Cache _cache;
 	Cache::iterator _current = _cache.end();

Telegram/SourceFiles/dialogs/dialogs_widget.cpp

@@ -1015,94 +1015,95 @@ void Widget::searchReceived(
 		? *_singleMessageSearch.lookup(_searchQuery)
 		: nullptr;
 
-	if (_searchRequest == requestId) {
-		switch (result.type()) {
-		case mtpc_messages_messages: {
-			auto &d = result.c_messages_messages();
-			if (_searchRequest != 0) {
-				// Don't apply cached data!
-				session().data().processUsers(d.vusers());
-				session().data().processChats(d.vchats());
-			}
-			auto &msgs = d.vmessages().v;
-			_inner->searchReceived(msgs, inject, type, msgs.size());
+	if (_searchRequest != requestId) {
+		return;
+	}
+	switch (result.type()) {
+	case mtpc_messages_messages: {
+		auto &d = result.c_messages_messages();
+		if (_searchRequest != 0) {
+			// Don't apply cached data!
+			session().data().processUsers(d.vusers());
+			session().data().processChats(d.vchats());
+		}
+		auto &msgs = d.vmessages().v;
+		_inner->searchReceived(msgs, inject, type, msgs.size());
+		if (type == SearchRequestType::MigratedFromStart || type == SearchRequestType::MigratedFromOffset) {
+			_searchFullMigrated = true;
+		} else {
+			_searchFull = true;
+		}
+	} break;
+
+	case mtpc_messages_messagesSlice: {
+		auto &d = result.c_messages_messagesSlice();
+		if (_searchRequest != 0) {
+			// Don't apply cached data!
+			session().data().processUsers(d.vusers());
+			session().data().processChats(d.vchats());
+		}
+		auto &msgs = d.vmessages().v;
+		const auto someAdded = _inner->searchReceived(msgs, inject, type, d.vcount().v);
+		const auto nextRate = d.vnext_rate();
+		const auto rateUpdated = nextRate && (nextRate->v != _searchNextRate);
+		const auto finished = (type == SearchRequestType::FromStart || type == SearchRequestType::FromOffset)
+			? !rateUpdated
+			: !someAdded;
+		if (rateUpdated) {
+			_searchNextRate = nextRate->v;
+		}
+		if (finished) {
 			if (type == SearchRequestType::MigratedFromStart || type == SearchRequestType::MigratedFromOffset) {
 				_searchFullMigrated = true;
 			} else {
 				_searchFull = true;
 			}
-		} break;
+		}
+	} break;
 
-		case mtpc_messages_messagesSlice: {
-			auto &d = result.c_messages_messagesSlice();
-			if (_searchRequest != 0) {
-				// Don't apply cached data!
-				session().data().processUsers(d.vusers());
-				session().data().processChats(d.vchats());
-			}
-			auto &msgs = d.vmessages().v;
-			const auto someAdded = _inner->searchReceived(msgs, inject, type, d.vcount().v);
-			const auto nextRate = d.vnext_rate();
-			const auto rateUpdated = nextRate && (nextRate->v != _searchNextRate);
-			const auto finished = (type == SearchRequestType::FromStart || type == SearchRequestType::FromOffset)
-				? !rateUpdated
-				: !someAdded;
-			if (rateUpdated) {
-				_searchNextRate = nextRate->v;
-			}
-			if (finished) {
-				if (type == SearchRequestType::MigratedFromStart || type == SearchRequestType::MigratedFromOffset) {
-					_searchFullMigrated = true;
-				} else {
-					_searchFull = true;
-				}
-			}
-		} break;
-
-		case mtpc_messages_channelMessages: {
-			auto &d = result.c_messages_channelMessages();
-			if (const auto peer = _searchInChat.peer()) {
-				if (const auto channel = peer->asChannel()) {
-					channel->ptsReceived(d.vpts().v);
-				} else {
-					LOG(("API Error: "
-						"received messages.channelMessages when no channel "
-						"was passed! (Widget::searchReceived)"));
-				}
+	case mtpc_messages_channelMessages: {
+		auto &d = result.c_messages_channelMessages();
+		if (const auto peer = _searchInChat.peer()) {
+			if (const auto channel = peer->asChannel()) {
+				channel->ptsReceived(d.vpts().v);
 			} else {
 				LOG(("API Error: "
 					"received messages.channelMessages when no channel "
 					"was passed! (Widget::searchReceived)"));
 			}
-			if (_searchRequest != 0) {
-				// Don't apply cached data!
-				session().data().processUsers(d.vusers());
-				session().data().processChats(d.vchats());
-			}
-			auto &msgs = d.vmessages().v;
-			if (!_inner->searchReceived(msgs, inject, type, d.vcount().v)) {
-				if (type == SearchRequestType::MigratedFromStart || type == SearchRequestType::MigratedFromOffset) {
-					_searchFullMigrated = true;
-				} else {
-					_searchFull = true;
-				}
-			}
-		} break;
-
-		case mtpc_messages_messagesNotModified: {
-			LOG(("API Error: received messages.messagesNotModified! (Widget::searchReceived)"));
+		} else {
+			LOG(("API Error: "
+				"received messages.channelMessages when no channel "
+				"was passed! (Widget::searchReceived)"));
+		}
+		if (_searchRequest != 0) {
+			// Don't apply cached data!
+			session().data().processUsers(d.vusers());
+			session().data().processChats(d.vchats());
+		}
+		auto &msgs = d.vmessages().v;
+		if (!_inner->searchReceived(msgs, inject, type, d.vcount().v)) {
 			if (type == SearchRequestType::MigratedFromStart || type == SearchRequestType::MigratedFromOffset) {
 				_searchFullMigrated = true;
 			} else {
 				_searchFull = true;
 			}
-		} break;
 		}
+	} break;
 
-		_searchRequest = 0;
-		onListScroll();
-		update();
+	case mtpc_messages_messagesNotModified: {
+		LOG(("API Error: received messages.messagesNotModified! (Widget::searchReceived)"));
+		if (type == SearchRequestType::MigratedFromStart || type == SearchRequestType::MigratedFromOffset) {
+			_searchFullMigrated = true;
+		} else {
+			_searchFull = true;
+		}
+	} break;
 	}
+
+	_searchRequest = 0;
+	onListScroll();
+	update();
 }
 
 void Widget::peerSearchReceived(

Telegram/SourceFiles/history/history.cpp

@@ -2480,7 +2480,7 @@ void History::setFakeChatListMessage() {
 	if (const auto chat = peer->asChat()) {
 		// In chats we try to take the item before the 'last', which
 		// is the empty-displayed migration message.
-		session().api().requestFakeChatListMessage(this);
+		owner().histories().requestFakeChatListMessage(this);
 	} else if (const auto from = migrateFrom()) {
 		// In megagroups we just try to use
 		// the message from the original group.

Telegram/SourceFiles/history/history_widget.cpp

@@ -1716,9 +1716,8 @@ void HistoryWidget::showHistory(
 	session().data().stopPlayingVideoFiles();
 
 	clearReplyReturns();
-	clearAllLoadRequests();
-
 	if (_history) {
+		clearAllLoadRequests();
 		if (Ui::InFocusChain(_list)) {
 			// Removing focus from list clears selected and updates top bar.
 			setFocus();
@@ -1917,19 +1916,34 @@ void HistoryWidget::showHistory(
 }
 
 void HistoryWidget::clearDelayedShowAt() {
+	Expects(_history != nullptr);
+
 	_delayedShowAtMsgId = -1;
 	if (_delayedShowAtRequest) {
-		MTP::cancel(_delayedShowAtRequest);
+		_history->owner().histories().cancelRequest(
+			_history,
+			_delayedShowAtRequest);
 		_delayedShowAtRequest = 0;
 	}
 }
 
 void HistoryWidget::clearAllLoadRequests() {
+	Expects(_history != nullptr);
+
+	auto &histories = _history->owner().histories();
 	clearDelayedShowAt();
-	if (_firstLoadRequest) MTP::cancel(_firstLoadRequest);
-	if (_preloadRequest) MTP::cancel(_preloadRequest);
-	if (_preloadDownRequest) MTP::cancel(_preloadDownRequest);
-	_preloadRequest = _preloadDownRequest = _firstLoadRequest = 0;
+	if (_firstLoadRequest) {
+		histories.cancelRequest(_history, _firstLoadRequest);
+		_firstLoadRequest = 0;
+	}
+	if (_preloadRequest) {
+		histories.cancelRequest(_history, _preloadRequest);
+		_preloadRequest = 0;
+	}
+	if (_preloadDownRequest) {
+		histories.cancelRequest(_history, _preloadDownRequest);
+		_preloadDownRequest = 0;
+	}
 }
 
 void HistoryWidget::updateFieldSubmitSettings() {
@@ -2330,8 +2344,10 @@ void HistoryWidget::unreadCountUpdated() {
 	}
 }
 
-bool HistoryWidget::messagesFailed(const RPCError &error, mtpRequestId requestId) {
-	if (MTP::isDefaultHandledError(error)) return false;
+bool HistoryWidget::messagesFailed(const RPCError &error, int requestId) {
+	if (MTP::isDefaultHandledError(error)) {
+		return false;
+	}
 
 	if (error.type() == qstr("CHANNEL_PRIVATE")
 		|| error.type() == qstr("CHANNEL_PUBLIC_GROUP_NA")
@@ -2356,15 +2372,20 @@ bool HistoryWidget::messagesFailed(const RPCError &error, mtpRequestId requestId
 	return true;
 }
 
-void HistoryWidget::messagesReceived(PeerData *peer, const MTPmessages_Messages &messages, mtpRequestId requestId) {
-	if (!_history) {
-		_preloadRequest = _preloadDownRequest = _firstLoadRequest = _delayedShowAtRequest = 0;
-		return;
-	}
+void HistoryWidget::messagesReceived(PeerData *peer, const MTPmessages_Messages &messages, int requestId) {
+	Expects(_history != nullptr);
 
 	bool toMigrated = (peer == _peer->migrateFrom());
 	if (peer != _peer && !toMigrated) {
-		_preloadRequest = _preloadDownRequest = _firstLoadRequest = _delayedShowAtRequest = 0;
+		if (_preloadRequest == requestId) {
+			_preloadRequest = 0;
+		} else if (_preloadDownRequest == requestId) {
+			_preloadDownRequest = 0;
+		} else if (_firstLoadRequest == requestId) {
+			_firstLoadRequest = 0;
+		} else if (_delayedShowAtRequest == requestId) {
+			_delayedShowAtRequest = 0;
+		}
 		return;
 	}
 
@@ -2456,10 +2477,7 @@ void HistoryWidget::messagesReceived(PeerData *peer, const MTPmessages_Messages
 		_delayedShowAtRequest = 0;
 		_history->getReadyFor(_delayedShowAtMsgId);
 		if (_history->isEmpty()) {
-			if (_preloadRequest) MTP::cancel(_preloadRequest);
-			if (_preloadDownRequest) MTP::cancel(_preloadDownRequest);
-			if (_firstLoadRequest) MTP::cancel(_firstLoadRequest);
-			_preloadRequest = _preloadDownRequest = 0;
+			clearAllLoadRequests();
 			_firstLoadRequest = -1; // hack - don't updateListSize yet
 			addMessagesToFront(peer, *histList);
 			_firstLoadRequest = 0;
@@ -2520,14 +2538,14 @@ void HistoryWidget::firstLoadMessages() {
 		return;
 	}
 
-	auto from = _peer;
+	auto from = _history;
 	auto offsetId = 0;
 	auto offset = 0;
 	auto loadCount = kMessagesPerPage;
 	if (_showAtMsgId == ShowAtUnreadMsgId) {
 		if (const auto around = _migrated ? _migrated->loadAroundId() : 0) {
 			_history->getReadyFor(_showAtMsgId);
-			from = _migrated->peer;
+			from = _migrated;
 			offset = -loadCount / 2;
 			offsetId = around;
 		} else if (const auto around = _history->loadAroundId()) {
@@ -2547,7 +2565,7 @@ void HistoryWidget::firstLoadMessages() {
 	} else if (_showAtMsgId < 0 && _history->isChannel()) {
 		if (_showAtMsgId < 0 && -_showAtMsgId < ServerMaxMsgId && _migrated) {
 			_history->getReadyFor(_showAtMsgId);
-			from = _migrated->peer;
+			from = _migrated;
 			offset = -loadCount / 2;
 			offsetId = -_showAtMsgId;
 		} else if (_showAtMsgId == SwitchAtTopMsgId) {
@@ -2560,18 +2578,27 @@ void HistoryWidget::firstLoadMessages() {
 	auto minId = 0;
 	auto historyHash = 0;
 
-	_firstLoadRequest = MTP::send(
-		MTPmessages_GetHistory(
-			from->input,
+	const auto history = from;
+	const auto type = Data::Histories::RequestType::History;
+	auto &histories = history->owner().histories();
+	_firstLoadRequest = histories.sendRequest(history, type, [=](Fn<void()> finish) {
+		return history->session().api().request(MTPmessages_GetHistory(
+			history->peer->input,
 			MTP_int(offsetId),
 			MTP_int(offsetDate),
 			MTP_int(offset),
 			MTP_int(loadCount),
 			MTP_int(maxId),
 			MTP_int(minId),
-			MTP_int(historyHash)),
-		rpcDone(&HistoryWidget::messagesReceived, from),
-		rpcFail(&HistoryWidget::messagesFailed));
+			MTP_int(historyHash)
+		)).done([=](const MTPmessages_Messages &result) {
+			messagesReceived(history->peer, result, _firstLoadRequest);
+			finish();
+		}).fail([=](const RPCError &error) {
+			messagesFailed(error, _firstLoadRequest);
+			finish();
+		}).send();
+	});
 }
 
 void HistoryWidget::loadMessages() {
@@ -2602,18 +2629,27 @@ void HistoryWidget::loadMessages() {
 	auto minId = 0;
 	auto historyHash = 0;
 
-	_preloadRequest = MTP::send(
-		MTPmessages_GetHistory(
-			from->peer->input,
+	const auto history = from;
+	const auto type = Data::Histories::RequestType::History;
+	auto &histories = history->owner().histories();
+	_preloadRequest = histories.sendRequest(history, type, [=](Fn<void()> finish) {
+		return history->session().api().request(MTPmessages_GetHistory(
+			history->peer->input,
 			MTP_int(offsetId),
 			MTP_int(offsetDate),
 			MTP_int(addOffset),
 			MTP_int(loadCount),
 			MTP_int(maxId),
 			MTP_int(minId),
-			MTP_int(historyHash)),
-		rpcDone(&HistoryWidget::messagesReceived, from->peer.get()),
-		rpcFail(&HistoryWidget::messagesFailed));
+			MTP_int(historyHash)
+		)).done([=](const MTPmessages_Messages &result) {
+			messagesReceived(history->peer, result, _preloadRequest);
+			finish();
+		}).fail([=](const RPCError &error) {
+			messagesFailed(error, _preloadRequest);
+			finish();
+		}).send();
+	});
 }
 
 void HistoryWidget::loadMessagesDown() {
@@ -2644,18 +2680,27 @@ void HistoryWidget::loadMessagesDown() {
 	auto minId = 0;
 	auto historyHash = 0;
 
-	_preloadDownRequest = MTP::send(
-		MTPmessages_GetHistory(
-			from->peer->input,
+	const auto history = from;
+	const auto type = Data::Histories::RequestType::History;
+	auto &histories = history->owner().histories();
+	_preloadDownRequest = histories.sendRequest(history, type, [=](Fn<void()> finish) {
+		return history->session().api().request(MTPmessages_GetHistory(
+			history->peer->input,
 			MTP_int(offsetId + 1),
 			MTP_int(offsetDate),
 			MTP_int(addOffset),
 			MTP_int(loadCount),
 			MTP_int(maxId),
 			MTP_int(minId),
-			MTP_int(historyHash)),
-		rpcDone(&HistoryWidget::messagesReceived, from->peer.get()),
-		rpcFail(&HistoryWidget::messagesFailed));
+			MTP_int(historyHash)
+		)).done([=](const MTPmessages_Messages &result) {
+			messagesReceived(history->peer, result, _preloadDownRequest);
+			finish();
+		}).fail([=](const RPCError &error) {
+			messagesFailed(error, _preloadDownRequest);
+			finish();
+		}).send();
+	});
 }
 
 void HistoryWidget::delayedShowAt(MsgId showAtMsgId) {
@@ -2667,13 +2712,13 @@ void HistoryWidget::delayedShowAt(MsgId showAtMsgId) {
 	clearDelayedShowAt();
 	_delayedShowAtMsgId = showAtMsgId;
 
-	auto from = _peer;
+	auto from = _history;
 	auto offsetId = 0;
 	auto offset = 0;
 	auto loadCount = kMessagesPerPage;
 	if (_delayedShowAtMsgId == ShowAtUnreadMsgId) {
 		if (const auto around = _migrated ? _migrated->loadAroundId() : 0) {
-			from = _migrated->peer;
+			from = _migrated;
 			offset = -loadCount / 2;
 			offsetId = around;
 		} else if (const auto around = _history->loadAroundId()) {
@@ -2689,7 +2734,7 @@ void HistoryWidget::delayedShowAt(MsgId showAtMsgId) {
 		offsetId = _delayedShowAtMsgId;
 	} else if (_delayedShowAtMsgId < 0 && _history->isChannel()) {
 		if (_delayedShowAtMsgId < 0 && -_delayedShowAtMsgId < ServerMaxMsgId && _migrated) {
-			from = _migrated->peer;
+			from = _migrated;
 			offset = -loadCount / 2;
 			offsetId = -_delayedShowAtMsgId;
 		}
@@ -2699,18 +2744,27 @@ void HistoryWidget::delayedShowAt(MsgId showAtMsgId) {
 	auto minId = 0;
 	auto historyHash = 0;
 
-	_delayedShowAtRequest = MTP::send(
-		MTPmessages_GetHistory(
-			from->input,
+	const auto history = from;
+	const auto type = Data::Histories::RequestType::History;
+	auto &histories = history->owner().histories();
+	_delayedShowAtRequest = histories.sendRequest(history, type, [=](Fn<void()> finish) {
+		return history->session().api().request(MTPmessages_GetHistory(
+			history->peer->input,
 			MTP_int(offsetId),
 			MTP_int(offsetDate),
 			MTP_int(offset),
 			MTP_int(loadCount),
 			MTP_int(maxId),
 			MTP_int(minId),
-			MTP_int(historyHash)),
-		rpcDone(&HistoryWidget::messagesReceived, from),
-		rpcFail(&HistoryWidget::messagesFailed));
+			MTP_int(historyHash)
+		)).done([=](const MTPmessages_Messages &result) {
+			messagesReceived(history->peer, result, _delayedShowAtRequest);
+			finish();
+		}).fail([=](const RPCError &error) {
+			messagesFailed(error, _delayedShowAtRequest);
+			finish();
+		}).send();
+	});
 }
 
 void HistoryWidget::onScroll() {
@@ -2884,7 +2938,8 @@ void HistoryWidget::saveEditMsg() {
 		sendFlags |= MTPmessages_EditMessage::Flag::f_entities;
 	}
 
-	_saveEditMsgRequestId = MTP::send(
+	const auto history = _history;
+	_saveEditMsgRequestId = history->session().api().request(
 		MTPmessages_EditMessage(
 			MTP_flags(sendFlags),
 			_history->peer->input,
@@ -2893,9 +2948,12 @@ void HistoryWidget::saveEditMsg() {
 			MTPInputMedia(),
 			MTPReplyMarkup(),
 			sentEntities,
-			MTP_int(0)), // schedule_date
-		rpcDone(&HistoryWidget::saveEditMsgDone, _history),
-		rpcFail(&HistoryWidget::saveEditMsgFail, _history));
+			MTP_int(0)
+	)).done([=](const MTPUpdates &result, mtpRequestId requestId) {
+		saveEditMsgDone(history, result, requestId);
+	}).fail([=](const RPCError &error, mtpRequestId requestId) {
+		saveEditMsgFail(history, error, requestId);
+	}).send();
 }
 
 void HistoryWidget::saveEditMsgDone(History *history, const MTPUpdates &updates, mtpRequestId req) {
@@ -2913,7 +2971,9 @@ void HistoryWidget::saveEditMsgDone(History *history, const MTPUpdates &updates,
 }
 
 bool HistoryWidget::saveEditMsgFail(History *history, const RPCError &error, mtpRequestId req) {
-	if (MTP::isDefaultHandledError(error)) return false;
+	if (MTP::isDefaultHandledError(error)) {
+		return false;
+	}
 	if (req == _saveEditMsgRequestId) {
 		_saveEditMsgRequestId = 0;
 	}
@@ -3733,7 +3793,9 @@ void HistoryWidget::inlineBotResolveDone(
 }
 
 bool HistoryWidget::inlineBotResolveFail(QString name, const RPCError &error) {
-	if (MTP::isDefaultHandledError(error)) return false;
+	if (MTP::isDefaultHandledError(error)) {
+		return false;
+	}
 
 	_inlineBotResolveRequestId = 0;
 //	Notify::inlineBotRequesting(false);
@@ -6085,7 +6147,7 @@ void HistoryWidget::cancelEdit() {
 	applyDraft();
 
 	if (_saveEditMsgRequestId) {
-		MTP::cancel(_saveEditMsgRequestId);
+		_history->session().api().request(_saveEditMsgRequestId).cancel();
 		_saveEditMsgRequestId = 0;
 	}
 
@@ -6970,5 +7032,6 @@ void HistoryWidget::synteticScrollToY(int y) {
 }
 
 HistoryWidget::~HistoryWidget() {
+	clearAllLoadRequests();
 	setTabbedPanel(nullptr);
 }

Telegram/SourceFiles/history/history_widget.h

@@ -105,7 +105,6 @@ public:
 
 	void start();
 
-	void messagesReceived(PeerData *peer, const MTPmessages_Messages &messages, mtpRequestId requestId);
 	void historyLoaded();
 
 	void windowShown();
@@ -569,7 +568,8 @@ private:
 	void checkPreview();
 	void requestPreview();
 	void gotPreview(QString links, const MTPMessageMedia &media, mtpRequestId req);
-	bool messagesFailed(const RPCError &error, mtpRequestId requestId);
+	void messagesReceived(PeerData *peer, const MTPmessages_Messages &messages, int requestId);
+	bool messagesFailed(const RPCError &error, int requestId);
 	void addMessagesToFront(PeerData *peer, const QVector<MTPMessage> &messages);
 	void addMessagesToBack(PeerData *peer, const QVector<MTPMessage> &messages);
 
@@ -681,12 +681,12 @@ private:
 	bool _canSendMessages = false;
 	MsgId _showAtMsgId = ShowAtUnreadMsgId;
 
-	mtpRequestId _firstLoadRequest = 0;
-	mtpRequestId _preloadRequest = 0;
-	mtpRequestId _preloadDownRequest = 0;
+	int _firstLoadRequest = 0; // Not real mtpRequestId.
+	int _preloadRequest = 0; // Not real mtpRequestId.
+	int _preloadDownRequest = 0; // Not real mtpRequestId.
 
 	MsgId _delayedShowAtMsgId = -1;
-	mtpRequestId _delayedShowAtRequest = 0;
+	int _delayedShowAtRequest = 0; // Not real mtpRequestId.
 
 	object_ptr<HistoryView::TopBarWidget> _topBar;
 	object_ptr<Ui::ScrollArea> _scroll;