Client configuration

The MTProto API has multiple configuration parameters that can be fetched with the appropriate methods.

MTProto configuration

config#330b4067 flags:# phonecalls_enabled:flags.1?true default_p2p_contacts:flags.3?true preload_featured_stickers:flags.4?true ignore_phone_entities:flags.5?true revoke_pm_inbox:flags.6?true blocked_mode:flags.8?true pfs_enabled:flags.13?true date:int expires:int test_mode:Bool this_dc:int dc_options:Vector<DcOption> dc_txt_domain_name:string chat_size_max:int megagroup_size_max:int forwarded_count_max:int online_update_period_ms:int offline_blur_timeout_ms:int offline_idle_timeout_ms:int online_cloud_timeout_ms:int notify_cloud_delay_ms:int notify_default_delay_ms:int push_chat_period_ms:int push_chat_limit:int saved_gifs_limit:int edit_time_limit:int revoke_time_limit:int revoke_pm_time_limit:int rating_e_decay:int stickers_recent_limit:int stickers_faved_limit:int channels_read_media_period:int tmp_sessions:flags.0?int pinned_dialogs_count_max:int pinned_infolder_count_max:int call_receive_timeout_ms:int call_ring_timeout_ms:int call_connect_timeout_ms:int call_packet_timeout_ms:int me_url_prefix:string autoupdate_url_prefix:flags.7?string gif_search_username:flags.9?string venue_search_username:flags.10?string img_search_username:flags.11?string static_maps_provider:flags.12?string caption_length_max:int message_length_max:int webfile_dc_id:int suggested_lang_code:flags.2?string lang_pack_version:flags.2?int base_lang_pack_version:flags.2?int = Config;
nearestDc#8e1a1775 country:string this_dc:int nearest_dc:int = NearestDc;

---functions---

help.getConfig#c4f9186b = Config;
help.getNearestDc#1fb33026 = NearestDc;

The huge config constructor contains lots of useful information, from chat and message size limitations, to privacy settings, online status refresh interval and timeout, VoIP configuration, default inline bot usernames for GIF, image and venue lookup, and lots of other global and user-specific information, check out the constructor page for more information.

Client configuration

jsonObjectValue#c0de1bd9 key:string value:JSONValue = JSONObjectValue;

jsonNull#3f6d7b68 = JSONValue;
jsonBool#c7345e6a value:Bool = JSONValue;
jsonNumber#2be0dfa4 value:double = JSONValue;
jsonString#b71e767a value:string = JSONValue;
jsonArray#f7444763 value:Vector<JSONValue> = JSONValue;
jsonObject#99c1d49d value:Vector<JSONObjectValue> = JSONValue;

---functions---

help.getAppConfig#98914110 = JSONValue;

The help.getAppConfig method returns a JSON object containing rapidly evolving, client-specific configuration parameters.
While help.getConfig returns MTProto-specific configuration with information about server-side limitations and other MTProto-related information, help.getAppConfig returns configuration parameters useful for graphical Telegram clients.

Typical fields included in the resulting JSON object are:

  • emojies_animated_zoom - Animated emojis and animated dice should be scaled by this factor before being shown to the user (float)
  • keep_alive_service - Whether app clients should start a keepalive service to keep the app running and fetch updates even when the app is closed (boolean)
  • background_connection - Whether app clients should start a background TCP connection for MTProto update fetching (boolean)
  • emojies_send_dice - A list of supported animated dice stickers (array of strings).
  • emojies_send_dice_success - For animated dice emojis other than the basic 🎲, indicates the winning dice value and the final frame of the animated sticker, at which to show the fireworks 🎆 (object with emoji keys and object values, containing value and frame_start float values)
  • emojies_sounds - A map of soundbites to be played when the user clicks on the specified animated emoji; the file reference field should be base64-decoded before downloading the file (map of file IDs, with emoji string keys)
  • gif_search_branding - Specifies the name of the service providing GIF search through gif_search_username (string)
  • gif_search_emojies - Specifies a list of emojies that should be suggested as search term in a bar above the GIF search box (array of string emojis)
  • stickers_emoji_suggest_only_api - Specifies that the app should not display local sticker suggestions for emojis at all and just use the result of messages.getStickers (bool)
  • stickers_emoji_cache_time - Specifies the validity period of the local cache of messages.getStickers, also relevant when generating the pagination hash when invoking the method. (int)
  • qr_login_camera - Whether the Settings->Devices menu should show an option to scan a QR login code (boolean)
  • qr_login_code - Whether the login screen should show a QR code login option, possibly as default login method (string, "disabled", "primary" or "secondary")
  • dialog_filters_enabled - Whether clients should show an option for managing dialog filters AKA folders (boolean)
  • dialog_filters_tooltip - Whether clients should actively show a tooltip, inviting the user to configure dialog filters AKA folders; typically this happens when the chat list is long enough to start getting cluttered. (boolean)
  • autoarchive_setting_available - Whether clients can invoke account.setGlobalPrivacySettings with globalPrivacySettings.archive_and_mute_new_noncontact_peers = boolTrue, to automatically archive and mute new incoming chats from non-contacts. (boolean)
  • pending_suggestions - Contains a list of suggestions that should be actively shown as a tooltip to the user. (Array of strings, possible values shown in the suggestions section ».
  • url_auth_domains - A list of domains that support automatic login with manual user confirmation, click here for more info on URL authorization ». (array of strings)
  • autologin_domains - A list of Telegram domains that support automatic login with no user confirmation, click here for more info on URL authorization ». (array of strings)
  • autologin_token - Autologin token, click here for more info on URL authorization ». (string)
  • round_video_encoding - Contains a set of recommended codec parameters for round videos.
  • chat_read_mark_size_threshold - Per-user read receipts, fetchable using messages.getMessageReadParticipants, will be available in groups with an amount of participants less or equal to chat_read_mark_size_threshold. (int)
  • chat_read_mark_expire_period - To protect user privacy, read receipts are only stored for chat_read_mark_expire_period seconds after the message was sent. (int)
  • groupcall_video_participants_max - Maximum number of participants in a group call (livestreams allow ∞ participants) (int)
  • reactions_default - Default emoji reaction to use in the quick reaction menu, this value can be changed using messages.setDefaultReaction (string)
  • reactions_uniq_max - Maximum number of unique reaction-emojis for any given message: for example, if there are 2000 👍 and 1000 😁 reactions and reactions_uniq_max = 2, you can't add a 👎 reaction, because that would raise the number of unique reaction-emojis to 3 > 2. (integer)

Example value: 

{
    "test": 1,
    "emojies_animated_zoom": 0.625,
    "keep_alive_service": true,
    "background_connection": true,
    "emojies_send_dice": [
        "\ud83c\udfb2",
        "\ud83c\udfaf",
        "\ud83c\udfc0",
        "\u26bd",
        "\u26bd\ufe0f",
        "\ud83c\udfb0",
        "\ud83c\udfb3"
    ],
    "emojies_send_dice_success": {
        "\ud83c\udfaf": {
            "value": 6,
            "frame_start": 62
        },
        "\ud83c\udfc0": {
            "value": 5,
            "frame_start": 110
        },
        "\u26bd": {
            "value": 5,
            "frame_start": 110
        },
        "\u26bd\ufe0f": {
            "value": 5,
            "frame_start": 110
        },
        "\ud83c\udfb0": {
            "value": 64,
            "frame_start": 110
        },
        "\ud83c\udfb3": {
            "value": 6,
            "frame_start": 110
        }
    },
    "emojies_sounds": {
        "\ud83c\udf83": {
            "id": "4956223179606458539",
            "access_hash": "-2107001400913062971",
            "file_reference_base64": "AGIaeBZckszt-s71DzCHhSkfZI_l"
        },
        "\u26b0": {
            "id": "4956223179606458540",
            "access_hash": "-1498869544183595185",
            "file_reference_base64": "AGIaeBZRfKxsAgnaLEDh5XIa8Gri"
        },
        "\ud83e\udddf\u200d\u2642": {
            "id": "4960929110848176331",
            "access_hash": "3986395821757915468",
            "file_reference_base64": "AGIaeBZcFga_bS9BsPvVNA2zuYCI"
        },
        "\ud83e\udddf": {
            "id": "4960929110848176332",
            "access_hash": "-8929417974289765626",
            "file_reference_base64": "AGIaeBbUbidUDCl4nImJXPTl2wWj"
        },
        "\ud83e\udddf\u200d\u2640": {
            "id": "4960929110848176333",
            "access_hash": "9161696144162881753",
            "file_reference_base64": "AGIaeBb-ulJ2E-rSI2B8EKyAXs-8"
        },
        "\ud83c\udf51": {
            "id": "4963180910661861548",
            "access_hash": "-7431729439735063448",
            "file_reference_base64": "AGIaeBa940aXpIVLThj0J2ctxYFe"
        },
        "\ud83c\udf8a": {
            "id": "5094064004578410732",
            "access_hash": "8518192996098758509",
            "file_reference_base64": "AGIaeBZFqTTp5drt0JZ86DGDAu1t"
        },
        "\ud83c\udf84": {
            "id": "5094064004578410733",
            "access_hash": "-4142643820629256996",
            "file_reference_base64": "AGIaeBbEqu-gV0qAUdP5lD3MxLSK"
        },
        "\ud83e\uddbe": {
            "id": "5094064004578410734",
            "access_hash": "-8934384022571962340",
            "file_reference_base64": "AGIaeBZ0YCp8_Zl_cmP4nvKkkSfF"
        }
    },
    "gif_search_branding": "tenor",
    "gif_search_emojies": [
        "\ud83d\udc4d",
        "\ud83d\ude18",
        "\ud83d\ude0d",
        "\ud83d\ude21",
        "\ud83e\udd73",
        "\ud83d\ude02",
        "\ud83d\ude2e",
        "\ud83d\ude44",
        "\ud83d\ude0e",
        "\ud83d\udc4e"
    ],
    "stickers_emoji_suggest_only_api": false,
    "stickers_emoji_cache_time": 86400,
    "groupcall_video_participants_max": 1000,
    "qr_login_camera": true,
    "qr_login_code": "primary",
    "dialog_filters_enabled": true,
    "dialog_filters_tooltip": true,
    "autoarchive_setting_available": false,
    "pending_suggestions": [
        "AUTOARCHIVE_POPULAR",
        "VALIDATE_PASSWORD",
        "VALIDATE_PHONE_NUMBER",
        "NEWCOMER_TICKS"
    ],
    "autologin_token": "string",
    "autologin_domains": [
        "instantview.telegram.org",
        "translations.telegram.org",
        "contest.dev",
        "contest.com",
        "bugs.telegram.org",
        "suggestions.telegram.org",
        "themes.telegram.org",
        "promote.telegram.org"
    ],
    "round_video_encoding": {
        "diameter": 384,
        "video_bitrate": 1000,
        "audio_bitrate": 64,
        "max_size": 12582912
    },
    "chat_read_mark_expire_period": 604800,
    "chat_read_mark_size_threshold": 100,
    "reactions_default": "\ud83d\udc4d",
    "reactions_uniq_max": 11
}

Suggestions

The API can return a set of useful suggestions for users of graphical clients.

Basic suggestions

jsonObjectValue#c0de1bd9 key:string value:JSONValue = JSONObjectValue;

jsonNull#3f6d7b68 = JSONValue;
jsonBool#c7345e6a value:Bool = JSONValue;
jsonNumber#2be0dfa4 value:double = JSONValue;
jsonString#b71e767a value:string = JSONValue;
jsonArray#f7444763 value:Vector<JSONValue> = JSONValue;
jsonObject#99c1d49d value:Vector<JSONObjectValue> = JSONValue;

---functions---

help.getAppConfig#98914110 = JSONValue;

The help.getAppConfig method returns a JSON object containing rapidly evolving, client-specific configuration parameters.
A full list of these parameters can be seen in the Client Configuration section », but we're mostly interested in the pending_suggestions and autoarchive_setting_available fields of the returned JSON object:

Channel suggestions

messages.chatFull#e5d7d19c full_chat:ChatFull chats:Vector<Chat> users:Vector<User> = messages.ChatFull;

channelFull#e13c3d20 flags:# can_view_participants:flags.3?true can_set_username:flags.6?true can_set_stickers:flags.7?true hidden_prehistory:flags.10?true can_set_location:flags.16?true has_scheduled:flags.19?true can_view_stats:flags.20?true blocked:flags.22?true id:long about:string participants_count:flags.0?int admins_count:flags.1?int kicked_count:flags.2?int banned_count:flags.2?int online_count:flags.13?int read_inbox_max_id:int read_outbox_max_id:int unread_count:int chat_photo:Photo notify_settings:PeerNotifySettings exported_invite:flags.23?ExportedChatInvite bot_info:Vector<BotInfo> migrated_from_chat_id:flags.4?long migrated_from_max_id:flags.4?int pinned_msg_id:flags.5?int stickerset:flags.8?StickerSet available_min_id:flags.9?int folder_id:flags.11?int linked_chat_id:flags.14?long location:flags.15?ChannelLocation slowmode_seconds:flags.17?int slowmode_next_send_date:flags.18?int stats_dc:flags.12?int pts:int call:flags.21?InputGroupCall ttl_period:flags.24?int pending_suggestions:flags.25?Vector<string> groupcall_default_join_as:flags.26?Peer theme_emoticon:flags.27?string requests_pending:flags.28?int recent_requesters:flags.28?Vector<long> default_send_as:flags.29?Peer available_reactions:flags.30?Vector<string> = ChatFull;

---functions---

channels.getFullChannel#8736a09 channel:InputChannel = messages.ChatFull;

Some channel/supergroup-related suggestions can also be contained in the pending_suggestions field of the channelFull constructor, returned by channels.getFullChannel.
Here's a list of possible suggestions:

Dismissing suggestions

boolFalse#bc799737 = Bool;
boolTrue#997275b5 = Bool;

---functions---

help.dismissSuggestion#f50dbaa1 peer:InputPeer suggestion:string = Bool;

help.dismissSuggestion can be used to dismiss a suggestion.
Pass inputPeerEmpty to peer for basic suggestions and the channel/supergroup's peer for channel suggestions.

App-specific configuration

help.appUpdate#ccbbce30 flags:# can_not_skip:flags.0?true id:int version:string text:string entities:Vector<MessageEntity> document:flags.1?Document url:flags.2?string sticker:flags.3?Document = help.AppUpdate;
help.noAppUpdate#c45a6536 = help.AppUpdate;

updates#74ae4240 updates:Vector<Update> users:Vector<User> chats:Vector<Chat> date:int seq:int = Updates;
updateServiceNotification#ebe46819 flags:# popup:flags.0?true inbox_date:flags.1?int type:string message:string media:MessageMedia entities:Vector<MessageEntity> = Update;

help.inviteText#18cb9f78 message:string = help.InviteText;

---functions---

help.getAppUpdate#522d5a7d source:string = help.AppUpdate;
help.getAppChangelog#9010ef6f prev_app_version:string = Updates;

help.getInviteText#4d392343 = help.InviteText;
  • help.getAppUpdate - Get info about an application update, can contain the updated application binary in the attached document
  • help.getAppChangelog - Get a list of service messages with app-specific changelogs
  • help.getInviteText - Returns a localized invitation message that can be sent via SMS to contacts that haven't signed up to Telegram yet

Terms of service

help.termsOfServiceUpdateEmpty#e3309f7f expires:int = help.TermsOfServiceUpdate;
help.termsOfServiceUpdate#28ecf961 expires:int terms_of_service:help.TermsOfService = help.TermsOfServiceUpdate;

help.termsOfService#780a0310 flags:# popup:flags.0?true id:DataJSON text:string entities:Vector<MessageEntity> min_age_confirm:flags.1?int = help.TermsOfService;

auth.authorizationSignUpRequired#44747e9a flags:# terms_of_service:flags.0?help.TermsOfService = auth.Authorization;

---functions---

help.getTermsOfServiceUpdate#2ca51fd1 = help.TermsOfServiceUpdate;
help.acceptTermsOfService#ee72f79a id:DataJSON = Bool;

auth.signIn#bcd51581 phone_number:string phone_code_hash:string phone_code:string = auth.Authorization;

account.deleteAccount#418d4e0b reason:string = Bool;

These methods can be used for managing consent to Telegram's Terms Of Service.

Typically, before a user signs up by invoking auth.signUp, apps should show a pop-up (if the popup flag of the help.termsOfService method is set), asking the user to accept Telegram's terms of service; in case of denial, the user is to be returned to the initial page of the login flow.

When signing up for the first time, the help.termsOfService is to be obtained from the auth.authorizationSignUpRequired constructor returned by the auth.signIn.

After signing up, or when logging in as an existing user, apps are supposed to call help.getTermsOfServiceUpdate to check for any updates to the Terms of Service; this call should be repeated after expires seconds have elapsed.
If an update to the Terms Of Service is available, clients are supposed to show a consent popup; if accepted, clients should call help.acceptTermsOfService, providing the termsOfService id JSON object; in case of denial, clients are to delete the account using account.deleteAccount, providing Decline ToS update as deletion reason.

Example implementation: android (signup), android (after login)

Telegram support info

user#3ff6ecb0 flags:# self:flags.10?true contact:flags.11?true mutual_contact:flags.12?true deleted:flags.13?true bot:flags.14?true bot_chat_history:flags.15?true bot_nochats:flags.16?true verified:flags.17?true restricted:flags.18?true min:flags.20?true bot_inline_geo:flags.21?true support:flags.23?true scam:flags.24?true apply_min_photo:flags.25?true fake:flags.26?true id:long access_hash:flags.0?long first_name:flags.1?string last_name:flags.2?string username:flags.3?string phone:flags.4?string photo:flags.5?UserProfilePhoto status:flags.6?UserStatus bot_info_version:flags.14?int restriction_reason:flags.18?Vector<RestrictionReason> bot_inline_placeholder:flags.19?string lang_code:flags.22?string = User;

help.support#17c6b5f6 phone_number:string user:User = help.Support;
help.supportName#8c05f1c9 name:string = help.SupportName;

---functions---

help.getSupport#9cdf08cd = help.Support;
help.getSupportName#d360e72c = help.SupportName;

These methods can be used for fetching info about Telegram's support user, that users can use to get support and ask questions about the app.

Country information and login phone patterns

help.countryCode#4203c5ef flags:# country_code:string prefixes:flags.0?Vector<string> patterns:flags.1?Vector<string> = help.CountryCode;

help.country#c3878e23 flags:# hidden:flags.0?true iso2:string default_name:string name:flags.1?string country_codes:Vector<help.CountryCode> = help.Country;

help.countriesListNotModified#93cc1f32 = help.CountriesList;
help.countriesList#87d0759e countries:Vector<help.Country> hash:int = help.CountriesList;

---functions---
help.getCountriesList#735787a8 lang_code:string hash:int = help.CountriesList;

help.getCountriesList can be used to fetch a list of localized names for all available countries and phone code patterns for logging in.

The phone code pattern should be used when showing the login screen, or when changing phone number: for example, a pattern value of XXX XXX XXX with country_code +39 indicates that the phone field for login should accept a spaced pattern like +39 123 456 789.
Also, the beginning of the national part of the phone number (123 456 789) should match one of the prefixes, if any were returned.

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