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Changes in 1.6.0:

  • Added support for multiple chat lists. Currently, only two chat lists Main and Archive are supported:
    • Added the class ChatList, which represents a chat list and could be chatListMain or chatListArchive.
    • Added the field chat_list to the class chat, denoting the chat list to which the chat belongs.
    • Added the parameter chat_list to the methods getChats, searchMessages and setPinnedChats.
    • Added the field chat_list to the updates updateUnreadMessageCount and updateUnreadChatCount.
    • Added the field total_count to the update updateUnreadChatCount, containing the total number of chats in the list.
    • Added the update updateChatChatList, which is sent after a chat is moved to or from a chat list.
    • Added the method setChatChatList, which can be used to move a chat between chat lists.
    • Added the option pinned_archived_chat_count_max for the maximum number of pinned chats in the Archive chat list.
  • Added support for scheduled messages:
    • Added the classes messageSchedulingStateSendAtDate and messageSchedulingStateSendWhenOnline, representing the scheduling state of a message.
    • Added the field scheduling_state to the class message, which allows to distinguish between scheduled and ordinary messages.
    • The update updateNewMessage can now contain a scheduled message and must be handled appropriately.
    • The updates updateMessageContent, updateDeleteMessages, updateMessageViews, updateMessageSendSucceeded, updateMessageSendFailed, and updateMessageSendAcknowledged can now contain identifiers of scheduled messages.
    • Added the class sendMessageOptions, which contains options for sending messages, including the scheduling state of the messages.
    • Replaced the parameters disable_notification and from_background in the methods sendMessage, sendMessageAlbum, sendInlineQueryResultMessage, and forwardMessages with the new field options of the type sendMessageOptions.
    • Added the method editMessageSchedulingState, which can be used to reschedule a message or send it immediately.
    • Added the method getChatScheduledMessages, which returns all scheduled messages in a chat.
    • Added the field has_scheduled_messages to the class chat.
    • Added the update updateChatHasScheduledMessages, which is sent whenever the field has_scheduled_messages changes in a chat.
    • Added support for reminders in Saved Messages and notifications about other sent scheduled messages in the Notification API.
  • Added support for adding users without a known phone number to the list of contacts:
    • Added the method addContact for adding or renaming contacts without a known phone number.
    • Added the field need_phone_number_privacy_exception to the class userFullInfo, containing the default value for the second parameter of the method addContact.
    • Added the fields is_contact and is_mutual_contact to the class user.
    • Removed the class LinkState and the fields outgoing_link and incoming_link from the class user.
  • Improved support for the top chat action bar:
    • Added the class ChatActionBar, representing all possible types of the action bar.
    • Added the field action_bar to the class chat.
    • Removed the legacy class chatReportSpamState.
    • Removed the legacy methods getChatReportSpamState and changeChatReportSpamState.
    • Added the update updateChatActionBar.
    • Added the method removeChatActionBar, which allows to dismiss the action bar.
    • Added the method sharePhoneNumber, allowing to share the phone number of the current user with a mutual contact.
    • Added the new reason chatReportReasonUnrelatedLocation for reporting location-based groups unrelated to their stated location.
  • Improved support for text entities:
    • Added the new types of text entities textEntityTypeUnderline and textEntityTypeStrikethrough.
    • Added support for nested entities. Entities can be nested, but must not mutually intersect with each other. Pre, Code and PreCode entities can't contain other entities. Bold, Italic, Underline and Strikethrough entities can contain and be contained in all other entities. All other entities can't contain each other.
    • Added the field version to the method textParseModeMarkdown. Versions 0 and 1 correspond to Bot API Markdown parse mode, version 2 to Bot API MarkdownV2 parse mode with underline, strikethrough and nested entities support.
    • The new entity types and nested entities are supported in secret chats also if its layer is at least 101.
  • Added support for native non-anonymous, multiple answer, and quiz-style polls:
    • Added support for quiz-style polls, which has exactly one correct answer option and can be answered only once.
    • Added support for regular polls, which allows multiple answers.
    • Added the classes pollTypeRegular and pollTypeQuiz, representing the possible types of a poll.
    • Added the field type to the classes poll and inputMessagePoll.
    • Added support for non-anonymous polls with visible votes by adding the field is_anonymous to the classes poll and inputMessagePoll.
    • Added the method getPollVoters, returning users that voted for the specified option in a non-anonymous poll.
    • Added the new reply markup keyboard button keyboardButtonTypeRequestPoll.
    • Added the field is_regular to the class pushMessageContentPoll.
    • Added the update updatePollAnswer for bots only.
    • Added the field is_closed to the class inputMessagePoll, which can be used by bots to send a closed poll.
  • Clarified in the documentation that file remote ID is guaranteed to be usable only if the corresponding file is still accessible to the user and is known to TDLib. For example, if the file is from a message, then the message must be not deleted and accessible to the user. If the file database is disabled, then the corresponding object with the file must be preloaded by the client.
  • Added support for administrator custom titles:
    • Added the field custom_title to chatMemberStatusCreator and chatMemberStatusAdministrator classes.
    • Added the classes chatAdministrator and chatAdministrators, containing user identifiers along with their custom administrator title and owner status.
    • Replaced the result type of the method getChatAdministrators with chatAdministrators.
  • Improved Instant View support:
    • Added the new web page block pageBlockVoiceNote.
    • Changed value of invisible cells in pageBlockTableCell to null.
    • Added the field is_cached to the class richTextUrl.
  • Improved support for chat backgrounds:
    • Added the classes backgroundFillSolid for solid color backgrounds and backgroundFillGradient for gradient backgrounds.
    • Added support for TGV (gzipped subset of SVG with MIME type "application/x-tgwallpattern") background patterns in addition to PNG patterns. Background pattern thumbnails are still always in PNG format.
    • Replaced the field color in the class backgroundTypePattern with the field fill of type BackgroundFill.
    • Replaced the class backgroundTypeSolid with the class backgroundTypeFill.
  • Added support for discussion groups for channel chats:
    • Added the field linked_chat_id to the class supergroupFullInfo containing the identifier of a discussion supergroup for the channel, or a channel, for which the supergroup is the designated discussion supergroup.
    • Added the field has_linked_chat to the class supergroup.
    • Added the method getSuitableDiscussionChats, which returns a list of chats which can be assigned as a discussion group for a channel by the current user.
    • Added the method setChatDiscussionGroup, which can be used to add or remove a discussion group from a channel.
    • Added the class chatEventLinkedChatChanged representing a change of the linked chat in the chat event log.
  • Added support for slow mode in supergroups:
    • Added the field is_slow_mode_enabled to the class supergroup.
    • Added the field slow_mode_delay to the class supergroupFullInfo.
    • Added the method setChatSlowModeDelay, which can be used to change the slow mode delay setting in a supergroup.
    • Added the class chatEventSlowModeDelayChanged representing a change of the slow mode delay setting in the chat event log.
  • Improved privacy settings support:
    • Added the classes userPrivacySettingRuleAllowChatMembers and userPrivacySettingRuleRestrictChatMembers to include or exclude all group members in a privacy setting rule.
    • Added the class userPrivacySettingShowPhoneNumber for managing the visibility of the user's phone number.
    • Added the class userPrivacySettingAllowFindingByPhoneNumber for managing whether the user can be found by their phone number.
  • Added the method checkCreatedPublicChatsLimit for checking whether the maximum number of owned public chats has been reached.
  • Added support for transferring ownership of supergroup and channel chats:
    • Added the method transferChatOwnership.
    • Added the class CanTransferOwnershipResult and the method canTransferOwnership for checking whether chat ownership can be transferred from the current session.
  • Added support for location-based supergroups:
    • Added the class chatLocation, which contains the location to which the supergroup is connected.
    • Added the field has_location to the class supergroup.
    • Added the field location to the class supergroupFullInfo.
    • Added the ability to create location-based supergroups via the new field location in the method createNewSupergroupChat.
    • Added the method setChatLocation, which allows to change location of location-based supergroups.
    • Added the field can_set_location to the class supergroupFullInfo.
    • Added the class PublicChatType, which can be one of publicChatTypeHasUsername or publicChatTypeIsLocationBased.
    • Added the parameter type to the method getCreatedPublicChats, which allows to get location-based supergroups owned by the user.
    • Supported location-based supergroups as public chats where appropriate.
    • Added the class chatEventLocationChanged representing a change of the location of a chat in the chat event log.
  • Added support for searching chats and users nearby:
    • Added the classes chatNearby and chatsNearby, containing information about chats along with the distance to them.
    • Added the method searchChatsNearby, which returns chats and users nearby.
    • Added the update updateUsersNearby, which is sent 60 seconds after a successful searchChatsNearby request.
  • Improved support for inline keyboard buttons of the type inlineKeyboardButtonTypeLoginUrl:
    • Added the class LoginUrlInfo and the method getLoginUrlInfo, which allows to get information about an inline button of the type inlineKeyboardButtonTypeLoginUrl.
    • Added the method getLoginUrl for automatic authorization on the target website.
  • Improved support for content restrictions:
    • The field restriction_reason in the classes user and channel now contains only a human-readable description why access must be restricted. It is non-empty if and only if access to the chat needs to be restricted.
    • Added the field restriction_reason to the class message. It is non-empty if and only if access to the message needs to be restricted.
    • Added the writable option ignore_platform_restrictions, which can be set in non-store apps to ignore restrictions specific to the currently used operating system.
    • Added the writable option ignore_sensitive_content_restrictions, which can be set to show sensitive content on all user devices. getOption("ignore_sensitive_content_restrictions") can be used to fetch the actual value of the option, the option will not be immediately updated after a change from another device.
    • Added the read-only option can_ignore_sensitive_content_restrictions, which can be used to check, whether the option ignore_sensitive_content_restrictions can be changed.
  • Added support for QR code authentication for already registered users:
    • Added the authorization state authorizationStateWaitOtherDeviceConfirmation.
    • Added the method requestQrCodeAuthentication, which can be used in the authorizationStateWaitPhoneNumber state instead of the method setAuthenticationPhoneNumber to request QR code authentication.
    • Added the method confirmQrCodeAuthentication for authentication confirmation from another device.
  • Added the update updateMessageLiveLocationViewed, which is supposed to trigger an edit of the corresponding live location.
  • Added the parameter input_language_code to the method searchEmojis.
  • Added the method getInactiveSupergroupChats, to be used when the user receives a CHANNELS_TOO_MUCH error after reaching the limit on the number of joined supergroup and channel chats.
  • Added the field unique_id to the class remoteFile, which can be used to identify the same file for different users.
  • Added the new category of top chat list topChatCategoryForwardChats.
  • Added the read-only option animated_emoji_sticker_set_name, containing name of a sticker set with animated emojis.
  • Added the read-only option unix_time, containing an estimation of the current Unix timestamp. The option will not be updated automatically unless the difference between the previous estimation and the locally available monotonic clocks changes significantly.
  • Added the field is_silent to the class notification, so silent notifications can be shown with the appropriate mark.
  • Added the field video_upload_bitrate to the class autoDownloadSettings.
  • Disallowed to call setChatNotificationSettings method on the chat with self, which never worked.
  • Added support for ton:// URLs in messages and inline keyboard buttons.

Changes in 1.5.0:

  • Changed authorization workflow:
    • Added the state authorizationStateWaitRegistration, which will be received after authorizationStateWaitCode for users who are not registered yet.
    • Added the method registerUser, which must be used in the authorizationStateWaitRegistration state to finish registration of the user.
    • Removed the fields is_registered and terms_of_service from the class authorizationStateWaitCode.
    • Removed the parameters first_name and last_name from the method checkAuthenticationCode.
  • Added support for messages with an unknown sender (zero sender_user_id) in private chats, basic groups and supergroups. Currently, the sender is unknown for posts in channels and for channel posts automatically forwarded to the discussion group.
  • Added support for the new permission system for non-administrator users in groups:
    • Added the class chatPermissions containing all supported permissions, including new permissions can_send_polls, can_change_info, can_invite_users and can_pin_messages.
    • Added the field permissions to the class chat, describing actions that non-administrator chat members are allowed to take in the chat.
    • Added the update updateChatPermissions.
    • Added the method setChatPermissions for changing chat permissions.
    • Added the class chatEventPermissionsChanged representing a change of chat permissions in the chat event log.
    • Replaced the fields can_send_messages, can_send_media_messages, can_send_other_messages, can_add_web_page_previews in the class chatMemberStatusRestricted with the field permissions of the type chatPermissions.
    • Removed the field everyone_is_administrator from the basicGroup class in favor of the field permissions of the class chat.
    • Removed the field anyone_can_invite from the supergroup class in favor of the field permissions of the class chat.
    • Removed the method toggleBasicGroupAdministrators in favor of setChatPermissions.
    • Removed the method toggleSupergroupInvites in favor of setChatPermissions.
    • Renamed the field anyone_can_invite to can_invite_users in the class chatEventInvitesToggled.
    • The permissions can_send_other_messages and can_add_web_page_previews now imply only can_send_messages instead of can_send_media_messages.
    • Allowed administrators in basic groups to use the method generateChatInviteLink.
  • Added out of the box OpenBSD and NetBSD operating systems support.
  • Added possibility to use LibreSSL >= 2.7.0 instead of OpenSSL to build TDLib.
  • Added instructions for building TDLib on Debian 10, OpenBSD and NetBSD to the TDLib build instructions generator.
  • Added support for Backgrounds 2.0:
    • Added the classes BackgroundType, background, backgrounds and InputBackground.
    • Added the method getBackground returning the list of backgrounds installed by the user.
    • Added the method setBackground for changing the background selected by the user.
    • Added the update updateSelectedBackground, which is sent right after a successful initialization and whenever the selected background changes.
    • Added the method removeBackground for removing a background from the list of installed backgrounds.
    • Added the method resetBackgrounds for restoring the default list of installed backgrounds.
    • Added the method searchBackground returning a background by its name.
    • Added the method getBackgroundUrl returning a persistent URL for a background.
    • Removed the getWallpapers method.
    • Removed the wallpaper and the wallpapers classes.
    • The class fileTypeWallpaper can be used for remote file identifiers of both old wallpapers and new backgrounds.
  • Added support for descriptions in basic groups:
    • Added the field description to the class basicGroupFullInfo.
    • Replaced the method setSupergroupDescription with setChatDescription which can be used for any chat type.
  • Added support for emoji suggestions:
    • Added the method searchEmojis for searching emojis by keywords.
    • Added the method getEmojiSuggestionsUrl, which can be used to automatically log in to the translation platform and suggest new emoji replacements.
    • Renamed the class stickerEmojis to emojis.
  • Changed type of the fields old_photo and new_photo in the class chatEventPhotoChanged from chatPhoto to photo.
  • Changed recommended size for inputThumbnail from 90x90 to 320x320.
  • Combined all supported settings for phone number authentication:
    • Added the class phoneNumberAuthenticationSettings which contains all the settings.
    • Replaced the parameters is_current_phone_number and allow_flash_call in the methods setAuthenticationPhoneNumber, sendPhoneNumberConfirmationCode, sendPhoneNumberVerificationCode and changePhoneNumber with the parameter settings of the type phoneNumberAuthenticationSettings.
    • Added support for automatic SMS code verification for official applications via the new field allow_app_hash in the class phoneNumberAuthenticationSettings.
  • Added support for auto-download settings presets.
    • Added the classes autoDownloadSettings and autoDownloadSettingsPresets.
    • Added the method getAutoDownloadSettingsPresets for getting the settings.
    • Added the method setAutoDownloadSettings, which needs to be called whenever the user changes the settings.
  • Added support for minithumbnails - thumbnail images of a very poor quality and low resolution:
    • Added the class minithumbnail.
    • Added the field minithumbnail to animation, document, photo, video and videoNote classes.
    • Added the field audio_cover_minithumbnail to the class audio.
  • Added support for resending messages which failed to send:
    • Added the fields error_code, error_message, can_retry and retry_after to the messageSendingStateFailed object.
    • Added the method resendMessages.
  • Added the field is_animated to the sticker, stickerSet and stickerSetInfo classes. Animated stickers can be received anywhere where non-animated stickers can appear.
  • Added the parameters send_copy and remove_caption to the forwardMessages method to allow forwarding of messages without links to the originals.
  • Added the fields send_copy and remove_caption to inputMessageForwarded method to allow forwarding of a message without link to the original message.
  • Added the method getMessageLinkInfo for getting information about a link to a message in a chat.
  • Added the class userPrivacySettingShowProfilePhoto for managing visibility of the user's profile photo.
  • Added the class userPrivacySettingShowLinkInForwardedMessages for managing whether a link to the user's account is included with forwarded messages.
  • Added the field thumbnail to the classes stickerSet and stickerSetInfo, containing a thumbnail for the sticker set.
  • Added the field is_scam to the classes user and supergroup.
  • Added a new kind of inline keyboard button inlineKeyboardButtonTypeLoginUrl, which for the moment must be processed in the same way as an inlineKeyboardButtonTypeUrl.
  • Added the new class supergroupMembersFilterContacts, allowing to only search for contacts in getSupergroupMembers.
  • Added the new class chatMembersFilterContacts, allowing to only search for contacts in searchChatMembers.
  • Added the class chatEventPollStopped representing the closing of a poll in a message in the chat event log.
  • Added ability to specify the exact types of problems with a call in the method sendCallRating and the new class CallProblem.
  • Changes in tdweb:
    • Supported non-zero offset and limit in readFilePart.

Changes in 1.4.0:

  • Added a TDLib build instructions generator, covering in details TDLib building on the most popular operating systems.
  • Added an example of TDLib building and usage from a browser. See https://github.com/tdlib/td/blob/master/example/web/ for more details.
  • Allowed to pass NULL pointer to td_json_client_execute instead of a previously created JSON client. Now you can use synchronous TDLib methods through a JSON interface before creating a TDLib JSON client.
  • Added support for media streaming by allowing to download any part of a file:
    • Added the offset parameter to downloadFile which specifies the starting position from which the file should be downloaded.
    • Added the limit parameter to downloadFile which specifies how many bytes should be downloaded starting from the offset position.
    • Added the field download_offset to the class localFile which contains the current download offset.
    • The field downloaded_prefix_size of the localFile class now contains the number of available bytes from the position download_offset instead of from the beginning of the file.
    • Added the method getFileDownloadedPrefixSize which can be used to get the number of locally available file bytes from a given offset without actually changing the download offset.
  • Added the parameter synchronous to downloadFile which causes the request to return the result only after the download is completed.
  • Added support for native polls in messages:
    • Added messagePoll to the types of message content; contains a poll.
    • Added the classes poll and pollOption describing a poll and a poll answer option respectively.
    • Added inputMessagePoll to the types of new input message content; can be used to send a poll.
    • Added the method setPollAnswer which can be used for voting in polls.
    • Added the method stopPoll which can be used to stop polls. Use the Message.can_be_edited field to check whether this method can be called on a message.
    • Added the update updatePoll for bots only. Ordinary users receive poll updates through updateMessageContent.
  • Added a Notification API. See article https://core.telegram.org/tdlib/notification-api for a detailed description.
    • Added the class pushReceiverId which contains a globally unique identifier of the push notification subscription.
    • Changed the return type of the method registerDevice to pushReceiverId to allow matching of push notifications with TDLib instances.
    • Removed the fields disable_notification and contains_mention from updateNewMessage.
    • Renamed the class deviceTokenGoogleCloudMessaging to deviceTokenFirebaseCloudMessaging.
    • Added the field encrypt to classes deviceTokenApplePushVoIP and deviceTokenFirebaseCloudMessaging which allows to subscribe for end-to-end encrypted push notifications.
    • Added the option notification_group_count_max which can be used to enable the Notification API and set the maximum number of notification groups to be shown simultaneously.
    • Added the option notification_group_size_max which can be used to set the maximum number of simultaneously shown notifications in a group.
    • Added the synchronous method getPushReceiverId for matching a push notification with a TDLib instance.
    • Added the method processPushNotification for handling of push notifications.
    • Removed the method processDcUpdate in favor of the general processPushNotification method.
    • Added the update updateNotificationGroup, sent whenever a notification group changes.
    • Added the update updateNotification, sent whenever a notification changes.
    • Added the update updateActiveNotifications for syncing the list of active notifications on startup.
    • Added the update updateHavePendingNotifications which can be used to improve lifetime handling of the TDLib instance.
    • Added the possibility to disable special handling of notifications about pinned messages via the new settings use_default_disable_pinned_message_notifications, disable_pinned_message_notifications in the class chatNotificationSettings and the new setting disable_pinned_message_notifications in the class scopeNotificationSettings.
    • Added the possibility to disable special handling of notifications about mentions and replies via the new settings use_default_disable_mention_notifications, disable_mention_notifications in the class chatNotificationSettings and the new setting disable_mention_notifications in the class scopeNotificationSettings.
    • Added the class PushMessageContent describing the content of a notification, received through a push notification.
    • Added the class NotificationType describing a type of a notification.
    • Added the class notification containing information about a notification.
    • Added the class NotificationGroupType describing a type of a notification group.
    • Added the class notificationGroup describing a state of a notification group.
    • Added the methods removeNotification and removeNotificationGroup for handling notifications removal by the user.
    • Added the separate notification scope notificationSettingsScopeChannelChats for channel chats.
  • Added support for pinned notifications in basic groups and Saved Messages:
    • Added the field pinned_message_id to the class chat.
    • Removed the field pinned_message_id from the class supergroupFullInfo in favor of chat.pinned_message_id.
    • Added the update updateChatPinnedMessage.
    • The right can_pin_messages is now applicable to both basic groups and supergroups.
    • Replaced the method pinSupergroupMessage with pinChatMessage which can be used for any chat type.
    • Replaced the method unpinSupergroupMessage with unpinChatMessage which can be used for any chat type.
  • Added new synchronous methods for managing TDLib internal logging. The old functions are deprecated and will be removed in TDLib 2.0.0.
    • Added the synchronous method setLogStream for changing the stream to which the TDLib internal log is written.
    • Added the synchronous method getLogStream for getting information about the currently used log stream.
    • Added the classes logStreamDefault, logStreamFile and logStreamEmpty describing different supported kinds of log streams.
    • Added the class logVerbosityLevel containing the verbosity level of the TDLib internal log.
    • Added the class logTags containing a list of available TDLib internal log tags.
    • Added the synchronous method setLogVerbosityLevel for changing verbosity level of logging.
    • Added the synchronous method getLogVerbosityLevel for getting the current verbosity level of logging.
    • Added the synchronous method getLogTags returning all currently supported log tags.
    • Added the synchronous method setLogTagVerbosityLevel for changing the verbosity level of logging for some specific part of the code.
    • Added the synchronous method getLogTagVerbosityLevel for getting the current verbosity level for a specific part of the code.
    • Added the synchronous method addLogMessage for using the TDLib internal log by the application.
  • Added support for Instant View 2.0:
    • Replaced the field has_instant_view in class webPage with the instant_view_version field.
    • Added the field version to the class webPageInstantView.
    • Added the class pageBlockCaption.
    • Changed the type of caption fields in pageBlockAnimation, pageBlockAudio, pageBlockPhoto, pageBlockVideo, pageBlockEmbedded, pageBlockEmbeddedPost, pageBlockCollage and pageBlockSlideshow from RichText to pageBlockCaption.
    • Added the class pageBlockListItem and replaced the content of the pageBlockList class with a list of pageBlockListItem.
    • Added 6 new kinds of RichText: richTextSubscript, richTextSuperscript, richTextMarked, richTextPhoneNumber, richTextIcon and richTextAnchor.
    • Added new classes pageBlockRelatedArticle, PageBlockHorizontalAlignment, PageBlockVerticalAlignment and pageBlockTableCell.
    • Added new block types pageBlockKicker, pageBlockRelatedArticles, pageBlockTable, pageBlockDetails and pageBlockMap.
    • Added the flag is_rtl to the class webPageInstantView.
    • Renamed the field caption in classes pageBlockBlockQuote and pageBlockPullQuote to credit.
    • Dimensions in pageBlockEmbedded can now be unknown.
    • Added the field url to pageBlockPhoto which contains a URL that needs to be opened when the photo is clicked.
    • Added the field url to webPageInstantView which must be used for the correct handling of anchors.
  • Added methods for confirmation of the 2-step verification recovery email address:
    • Added the method checkRecoveryEmailAddressCode for checking the verification code.
    • Added the method resendRecoveryEmailAddressCode for resending the verification code.
    • Replaced the field unconfirmed_recovery_email_address_pattern in the class passwordState with the recovery_email_address_code_info field containing full information about the code.
    • The necessity of recovery email address confirmation in setPassword and setRecoveryEmailAddress methods is now returned by the corresponding passwordState and not by the error EMAIL_UNCONFIRMED.
  • Improved the MessageForwardInfo class and added support for hidden original senders:
    • Removed the old messageForwardedPost and messageForwardedFromUser classes.
    • Added the class messageForwardInfo which contains information about the origin of the message, original sending date and identifies the place from which the message was forwarded the last time for messages forwarded to Saved Messages.
    • Added the classes messageForwardOriginUser, messageForwardOriginHiddenUser and messageForwardOriginChannel which describe the exact origins of a message.
  • Improved getting the list of user profile photos:
    • Added the class userProfilePhoto, containing id, added_date and sizes of a profile photo.
    • Changed the type of the field photos in userProfilePhotos to a list of userProfilePhoto instead of a list of photo. getUserProfilePhotos now returns a date for each profile photo.
    • Removed the field id from the class photo (this field was only needed in the result of getUserProfilePhotos).
  • Added the possibility to get a Telegram Passport authorization form before asking the user for a password:
    • Removed the parameter password from the method getPassportAuthorizationForm.
    • Moved the fields elements and errors from the class passportAuthorizationForm to the new class passportElementsWithErrors.
    • Added the method getPassportAuthorizationFormAvailableElements that takes the user's password and returns previously uploaded Telegram Passport elements and errors in them.
  • Added the field file_index to the classes passportElementErrorSourceFile and passportElementErrorSourceTranslationFile.
  • Added the method getCurrentState returning all updates describing the current TDLib state. It can be used to restore the correct state after connecting to a running TDLib instance.
  • Added the class updates which contains a list of updates and is returned by the getCurrentState method.
  • Added the update updateChatOnlineMemberCount which is automatically sent for open group chats if the number of online members in a group changes.
  • Added support for custom language packs downloaded from the server:
    • Added the fields base_language_pack_id`` to the class languagePackInfo`. Strings from the base language pack must be used for untranslated keys from the chosen language pack.
    • Added the fields plural_code, is_official, is_rtl, is_beta, is_installed, total_string_count, translated_string_count, translation_url to the class languagePackInfo.
    • Added the method addCustomServerLanguagePack which adds a custom server language pack to the list of installed language packs.
    • Added the method getLanguagePackInfo which can be used for handling https://t.me/setlanguage/... links.
    • Added the method synchronizeLanguagePack which can be used to fetch the latest versions of all strings from a language pack. The method doesn't need to be called explicitly for the current used/base language packs.
    • The method deleteLanguagePack now also removes the language pack from the list of installed language packs.
  • Added the method getChatNotificationSettingsExceptions which can be used to get chats with non-default notification settings.
  • Added the parameter hide_via_bot to sendInlineQueryResultMessage which can be used for getOption("animation_search_bot_username"), getOption("photo_search_bot_username") and getOption("venue_search_bot_username") bots to hide that the message was sent via the bot.
  • Added the class chatReportReasonChildAbuse which can be used to report a chat for child abuse.
  • Added the method getMessageLocally which returns a message only if it is available locally without a network request.
  • Added the method writeGeneratedFilePart which can be used to write a generated file if there is no direct access to TDLib's file system.
  • Added the method readFilePart which can be used to read a file from the TDLib file cache.
  • Added the class filePart to represent the result of the new readFilePart method.
  • Added the field log_size to the storageStatisticsFast class which contains the size of the TDLib internal log. Previously the size was included into the value of the database_size field.
  • Added the field language_pack_database_size to the storageStatisticsFast class which contains the size of the language pack database.
  • Added the field is_support to the class user which can be used to identify Telegram Support accounts.
  • Added the class HttpUrl encapsulating an HTTP URL.
  • Added the method getMessageLink which can be used to create a private link (which works only for members) to a message in a supergroup or channel.
  • Added support for channel statistics (coming soon):
    • Added the field can_view_statistics to the supergroupFullInfo class.
    • Added the method getChatStatisticsUrl which returns a URL with the chat statistics.
  • Added support for server-side peer-to-peer calls privacy:
    • Added the class userPrivacySettingAllowPeerToPeerCalls for managing privacy.
    • Added the field allow_p2p to callStateReady class which must be used to determine whether a peer-to-peer connection can be used.
  • Added the option ignore_background_updates which allows to skip all updates received while the TDLib instance was not running. The option does nothing if the database or secret chats are used.
  • Added the read-only option expect_blocking, suggesting whether Telegram is blocked for the user.
  • Added the read-only option enabled_proxy_id, containing the ID of the enabled proxy.
  • Added the ability to identify password pending sessions (where the code was entered but not the two-step verification password) via the flag is_password_pending in the session class. TDLib guarantees that the sessions will be returned by the getActiveSessions method in the correct order.
  • Added the classes JsonValue and jsonObjectMember which represent a JSON value and a member of a JSON object respectively as TDLib API objects.
  • Added the synchronous methods getJsonValue and getJsonString for simple conversion between a JSON-encoded string and JsonValue TDLib API class.
  • Added the methods getApplicationConfig and saveApplicationLogEvent to be used for testing purposes.
  • Added the temporarily class databaseStatistics and the method getDatabaseStatistics for rough estimations of database tables size in a human-readable format.
  • Made the method Client.Execute static in .NET interface.
  • Removed the on_closed callback virtual method from low-level C++ ClientActor interface. Callback destructor can be used instead.
  • Updated dependencies in the prebuilt TDLib for Android:
    • Updated SDK to SDK 28 in which helper classes was moved from android.support. to androidx. package.
    • Updated NDK to r19c, which dropped support for Android versions up to 4.0.4, so the minimum supported version is Android 4.1.
    • Updated OpenSSL to version 1.1.1.
    • Added x86_64 libraries.
  • Added out of the box FreeBSD support.
  • Significantly improved TDLib compilation time and decreased compiler RAM usage:
    • In native C++ interface td_api::object_ptr is now a simple homebrew const-propagating class instead of std::unique_ptr.
    • Added the script SplitSource.php, which can be used to split some source code files before building the library to reduce maximum RAM usage per file at the expense of increased build time.
  • The update updateOption with the version option is now guaranteed to come before all other updates. It can now be used to dynamically discover available methods.
  • Added the ability to delete incoming messages in private chats and revoke messages without a time limit:
    • Added the parameter revoke to the method deleteChatHistory; use it to delete chat history for all chat members.
    • Added the fields can_be_deleted_only_for_self and can_be_deleted_for_all_users to the class chat which can be used to determine for whom the chat can be deleted through the deleteChatHistory method.
    • The fields Message.can_be_deleted_only_for_self and Message.can_be_deleted_for_all_users can still be used to determine for whom the message can be deleted through the deleteMessages method.
  • Added support for server-generated notifications about newly registered contacts:
    • Setting the option disable_contact_registered_notifications now affects all user sessions. When the option is enabled, the client will still receive messageContactRegistered message in the private chat, but there will be no notification about the message.
    • getOption("disable_contact_registered_notifications") can be used to fetch the actual value of the option, the option will not be updated automatically after a change from another device.
  • Decreased the maximum allowed first name and last name length to 64, chat title length to 128, matching the new server-side limits.
  • Decreased the maximum allowed value of the forward_limit parameter of the addChatMember method from 300 to 100, matching the new server-side limit.
  • Added protection from opening two TDLib instances with the same database directory from one process.
  • Added copying of notification settings of new secret chats from notification settings of the corresponding private chat.
  • Excluded the sponsored chat (when using sponsored proxies) from unread counters.
  • Allowed to pass decreased local_size in setFileGenerationProgress to restart the generation from the beginning.
  • Added a check for modification time of original file in inputFileGenerated whenever possible. If the original file was changed, then TDLib will restart the generation.
  • Added the destruction of MTProto keys on the server during log out.
  • Added support for hexadecimal-encoded and decimal-encoded IPv4 proxy server addresses.
  • Improved the behavior of changeImportedContacts which now also deletes contacts of users without Telegram accounts from the server.
  • Added the ability to call getStorageStatistics before authorization.
  • Allowed to pass limit = -offset for negative offset in the getChatHistory method.
  • Changed the recommended inputThumbnail size to be at most 320x320 instead of the previous 90x90.
  • Disabled building by default of the native C interface. Use cmake --build . --target tdc to build it.
  • Numerous optimizations and bug fixes:
    • Network implementation for Windows was completely rewritten to allow a literally unlimited number of simultaneously used TDLib instances.
    • TDLib instances can now share working threads with each other. Only a limited number of threads will be created even if there are thousands of TDLib instances in a single process.
    • Removed the restriction on the size of update or response result in JSON interface.
    • Fixed pinning of the 5th chat when there is a sponsored chat.
    • Fixed IPv6 on Windows.
    • Improved network connections balancing, aliveness checks and overall stability.
    • Various autogenerated documentation fixes and improvements.

Changes in 1.3.0:

  • Added a review of existing TDLib based frameworks in different programming languages.
  • Added a Getting started guide describing the main TDLib concepts and basic principles required for library usage.
  • When a chat is opened, only those messages that have been viewed are marked as read.
  • Improved the proxy settings API:
    • A list of proxies is stored instead of just one proxy.
    • New methods addProxy, editProxy, enableProxy, disableProxy, removeProxy and getProxies were added instead of setProxy and getProxy.
    • Added the method pingProxy which can be used to compute time needed to receive a response from a Telegram server through a proxy or directly.
    • Added support for MTProto proxy via class proxyTypeMtproto.
    • Added support for HTTP proxy via class proxyTypeHttp.
    • For each proxy last time it was used is remembered.
    • Added the method getProxyLink which returns an HTTPS link that can be used to share a proxy with others.
  • Improved the notification settings API. Scope notification settings are now properly synchronized between all devices and chat notification settings can be reset to their default values:
    • The notificationSettings class was split into chatNotificationSettings and scopeNotificationSettings.
    • Only two notification settings scopes are left: notificationSettingsScopePrivateChats which is responsible for default notification settings for private and secret chats and notificationSettingsScopeGroupChats for all other chats.
    • updateNotificationSettings was split into updateChatNotificationSettings and updateScopeNotificationSettings.
    • setNotificationSettings was split into setChatNotificationSettings and setScopeNotificationSettings.
    • getNotificationSettings was replaced with getScopeNotificationSettings.
  • Added the field filter to the searchChatMembers method to support searching among administrators, bots, restricted and banned members.
  • Added the ability to use synchronous requests and setAlarm before the library is initialized.
  • Added the ability to send requests that don't need authentication before the library is initialized. These requests will be postponed and executed at the earliest opportunity. For example, setNetworkType can be used to disable the network for TDLib before the library tries to use it; addProxy can be used to add a proxy before any network activity; or setOption("use_pfs") can be used to guarantee that PFS is used for all requests.
  • Added support for tg:// links in inlineKeyboardButtonTypeUrl and textEntityTypeTextUrl.
  • Added the ability to call deleteAccount in the authorizationStateWaitPassword authorization state.
  • Added the ability to call checkAuthenticationCode with an empty first_name for unregistered users to check the code validity.
  • Added the methods editMessageMedia and editInlineMessageMedia for editing media messages content.
  • Renamed the class shippingAddress to address.
  • Changed the return value of the requestPasswordRecovery method from passwordRecoveryInfo to emailAddressAuthenticationCodeInfo.
  • Added support for sponsored channels promoted by MTProto-proxies:
    • Added the field is_sponsored to the chat class.
    • Added updateChatIsSponsored, sent when this field changes.
  • Added support for marking chats as unread:
    • Added the field is_marked_as_unread to chat.
    • Added the update updateChatIsMarkedAsUnread.
    • Added the method toggleChatIsMarkedAsUnread.
  • Added support for a default value of disable_notification, used when a message is sent to the chat:
    • Added the field default_disable_notification to chat class.
    • Added the update updateChatDefaultDisableNotification.
    • Added the method toggleChatDefaultDisableNotification.
  • Added the field vcard to the contact class.
  • Added the field type to venue, which contains a provider-specific type of the venue,
  • Added the update updateUnreadChatCount, enabled when the message database is used and sent when the number of unread chats has changed.
  • Added the method addLocalMessage for adding a local message to a chat.
  • Added the method getDeepLinkInfo, which can return information about tg:// links that are not supported by the client.
  • Added support for language packs:
    • Added the writable option language_pack_database_path which can be used to specify a path to a database for storing language pack strings, so that this database can be shared between different accounts. If not specified, language pack strings will be stored only in memory. Changes to the option are applied only on the next TDLib launch.
    • Added the writable option localization_target for setting up a name for the current localization target (currently supported: "android", "android_x", "ios", "macos" and "tdesktop").
    • Added the writable option language_pack_id for setting up an identifier of the currently used language pack from the current localization target (a "language pack" represents the collection of strings that can be used to display the interface of a particular application in a particular language).
    • Added the class LanguagePackStringValue describing the possible values of a string from a language pack.
    • Added the class languagePackString describing a string from a language pack.
    • Added the class languagePackStrings containing a list of language pack strings.
    • Added the class languagePackInfo containing information about a language pack from a localization target.
    • Added the class localizationTargetInfo containing information about a localization target.
    • Added the update updateLanguagePackStrings which is sent when some strings in a language pack have changed.
    • Added the synchronous method getLanguagePackString which can be used to get a language pack string from the local database.
    • Added the method getLocalizationTargetInfo which returns information about the current localization target.
    • Added the method getLanguagePackStrings which returns some or all strings from a language pack, possibly fetching them from the server.
    • Added the method setCustomLanguagePack for adding or editing a custom language pack.
    • Added the method editCustomLanguagePackInfo for editing information about a custom language pack.
    • Added the method setCustomLanguagePackString for adding, editing or deleting a string in a custom language pack.
    • Added the method deleteLanguagePack for deleting a language pack from the database.
    • Added the read-only option suggested_language_pack_id containing the identifier of the language pack, suggested for the user by the server.
  • Added support for Telegram Passport:
    • Added two new message contents messagePassportDataSent for ordinary users and messagePassportDataReceived for bots containing information about Telegram Passport data shared with a bot.
    • Added the new file type fileTypeSecure.
    • Added the class datedFile containing information about a file along with the date it was uploaded.
    • Added the helper classes date, personalDetails, identityDocument, inputIdentityDocument, personalDocument, inputPersonalDocument, passportElements.
    • Added the class PassportElementType describing all supported types of Telegram Passport elements.
    • Added the class PassportElement containing information about a Telegram Passport element.
    • Added the class InputPassportElement containing information about a Telegram Passport element to save.
    • Added the classes passportElementError and PassportElementErrorSource describing an error in a Telegram Passport element.
    • Added the field has_passport_data to the passwordState class.
    • Added the methods getPassportElement, getAllPassportElements, setPassportElement, deletePassportElement for managing Telegram Passport elements.
    • Added the methods getPassportAuthorizationForm and sendPassportAuthorizationForm used for sharing Telegram Passport data with a service via a bot.
    • Added the methods sendPhoneNumberVerificationCode, resendPhoneNumberVerificationCode and checkPhoneNumberVerificationCode for verification of a phone number used for Telegram Passport.
    • Added the methods sendEmailAddressVerificationCode, resendEmailAddressVerificationCode and checkEmailAddressVerificationCode for verification of an email address used for Telegram Passport.
    • Added the method getPreferredCountryLanguage returning a most popular language in a country.
    • Added the classes inputPassportElementError and InputPassportElementErrorSource for bots describing an error in a Telegram Passport element.
    • Added the method setPassportElementErrors for bots.
    • Added the class encryptedPassportElement and encryptedCredentials for bots describing an encrypted Telegram Passport element.
  • Improved support for Telegram terms of service:
    • Added the class termsOfService, containing information about the Telegram terms of service.
    • Added the field terms_of_service to authorizationStateWaitCode.
    • Added the update updateTermsOfService coming when new terms of service need to be accepted by the user.
    • Added the method acceptTermsOfService for accepting terms of service.
    • Removed the method getTermsOfService.
  • Added the method getMapThumbnailFile which can be used to register and download a map thumbnail file.
  • Added the methods sendPhoneNumberConfirmationCode, resendPhoneNumberConfirmationCode and checkPhoneNumberConfirmationCode which can be used to prevent an account from being deleted.
  • Added the convenience methods joinChat and leaveChat which can be used instead of setChatMemberStatus to manage the current user's membership in a chat.
  • Added the convenience method getContacts which can be used instead of searchContacts to get all contacts.
  • Added the synchronous method cleanFileName which removes potentially dangerous characters from a file name.
  • Added the method getChatMessageCount which can be used to get the number of shared media.
  • Added the writable option ignore_inline_thumbnails which can be used to prevent file thumbnails sent by the server along with messages from being saved on the disk.
  • Added the writable option prefer_ipv6 which can be used to prefer IPv6 connections over IPv4.
  • Added the writable option disable_top_chats which can be used to disable support for top chats.
  • Added the class chatReportReasonCopyright for reporting chats containing infringing content.
  • Added the method clearAllDraftMessages which can be used to delete all cloud drafts.
  • Added the read-only options message_text_length_max and message_caption_length_max.
  • Added the read-only options animation_search_bot_username, photo_search_bot_username and venue_search_bot_username containing usernames of bots which can be used in inline mode for animations, photos and venues search respectively.
  • Numerous optimizations and bug fixes:
    • Fixed string encoding for C# binding.
    • Fixed building TDLib SDK for Universal Windows Platform for ARM with MSVC 2017.
    • Fixed the Swift example project.
    • Fixed the syntax error in the Python example.
    • Sticker thumbnails can now have webp extensions if they are more likely to be in WEBP format.

Changes in 1.2.0:

  • Added support for native .NET bindings through C++/CLI and C++/CX. See using in .NET projects for more details.
  • Added a C# example. See README for build and usage instructions.
  • Added a build and usage example of TDLib SDK for Universal Windows Platform. See README for detailed build and usage instructions. Also see Unigram, which is a full-featured client rewritten from scratch using TDLib SDK for Universal Windows Platform in less than 2 months.
  • Added a Swift example. See README for build and usage instructions.
  • Added an example of building TDLib for iOS, watchOS, tvOS, and also macOS. See README for detailed build instructions.
  • Added README to C++ and python examples.
  • Link Time Optimization is disabled by default. Use -DTD_ENABLE_LTO=ON CMake option and CMake >= 3.9 to enable it.
  • updateNotificationSettings is now automatically sent when the mute time expires for a chat.
  • Added automatic sending of a corresponding chatAction when a file is being uploaded.
  • updateUserChatAction with chatActionCancel is now automatically sent when the timeout expires for an action.
  • Authorization states authorizationStateWaitCode and authorizationStateWaitPassword are now saved between library restarts for 5 minutes.
  • Added new message content type messageWebsiteConnected.
  • Added new text entity types textEntityTypeCashtag and textEntityTypePhoneNumber.
  • Added new update updateUnreadMessageCount, enabled when message database is used.
  • Method joinChatByInviteLink now returns the joined chat.
  • Method getWebPagePreview now accepts formattedText instead of plain string.
  • Added field phone_number to authenticationCodeInfo, which contains a phone number that is being authenticated.
  • Added field is_secret to messageAnimation, messagePhoto, messageVideo and messageVideoNote classes, which denotes whether the thumbnail for the content must be blurred and the content must be shown only while tapped.
  • Added field expires_in to messageLocation for live locations.
  • Added flag can_be_reported to chat class.
  • Added flag supports_streaming to classes video and inputMessageVideo.
  • Added parameter message_ids to reportChat, which can be used to report specific messages.
  • Added method checkChatUsername for checking whether a username can be set for a chat.
  • Added method getRepliedMessage, which returns a message that is replied by a given message.
  • Added method getChatPinnedMessage, which returns the pinned message from a chat.
  • Added method searchStickers to search by emoji for popular stickers suggested by the server.
  • Added method searchStickerSets to search by title and name for popular sticker sets suggested by the server.
  • Added method searchInstalledStickerSets to search by title and name for installed sticker sets.
  • Added methods for handling connected websites: getConnectedWebsites, disconnectWebsite and disconnectAllWebsites.
  • Added method getCountryCode, which uses current user IP address to identify their country.
  • Added option t_me_url.
  • Fixed BlackBerry spelling in deviceTokenBlackBerryPush.
  • Fixed return type of getChatMessageByDate method, which is Message and not Messages.
  • Ensured that updateOption("my_id") comes before updateAuthorizationState with authorizationStateReady.
  • Numerous optimizations and bug fixes.

Changes in 1.1.1:

  • Fixed C JSON bindings compilation error.
  • Fixed locale-dependent JSON generation.

Changes in 1.1.0:

  • Methods td::Log::set_file_path and td_set_log_file_path now return whether they succeeded.
  • Added methods td::Log::set_max_file_size and td_set_log_max_file_size for restricting maximum TDLib log size.
  • Added methods td::Log::set_fatal_error_callback and td_set_log_fatal_error_callback for providing callbacks on fatal errors.
  • JNI-bindings are now package-agnostic. Use CMake option TD_ENABLE_JNI to enable JNI-bindings.
  • Added a Java example. See README for build and usage instructions.
  • Added support for text entities in media captions.
    • Added new type formattedText containing a text with entities.
    • Replaced all string fields caption with fields of type formattedText.
    • Replaced fields text and entities with the field text of type formattedText in class messageText.
    • Replaced fields text and entities with the field text of type formattedText in class inputMessageText.
    • Replaced fields text and text_entities with the field text of type formattedText in class game.
    • Removed field parse_mode from class inputMessageText.
    • Added synchronous method parseTextEntities.
  • updateNewMessage is now sent for all sent messages.
  • updateChatLastMessage is now sent when any field of the last message in a chat changes.
  • Reworked the registerDevice method:
    • Added parameter other_user_ids to method registerDevice to support multiple accounts.
    • It is now possible to specify tokens for VoIP pushes, WNS, web Push API, Tizen Push Service as DeviceToken.
    • Added support for Apple Push Notification Service inside App Sandbox.
  • Added method searchChatsOnServer analogous to searchChats, but using server search.
  • Results from the searchChatsOnServer method are now excluded from searchPublicChats results, so searchChatsOnServer (along with searchContacts) should be called whenever searchPublicChats is called to ensure that no results were omitted.
  • Added parameter as_album to method getPublicMessageLink to enable getting public links for media albums.
  • Added field html to class publicMessageLink, containing HTML-code for message/message album embedding.
  • Added parameter only_if_pending to method cancelDownloadFile to allow keeping already started downloads.
  • Methods createPrivateChat, createBasicGroupChat, createSupergroupChat and createSecretChat can now be called without a prior call to getUser/getBasicGroup/getSupergroup/getSecretChat.
  • Added parameter force to methods createPrivateChat, createBasicGroupChat and createSupergroupChat to allow creating a chat without network requests.
  • Numerous optimizations and bug fixes.