9.2 KiB
TDLight Telegram Bot API
TDLight Telegram Bot API is a fork of the official Telegram Bot API, focused on memory footprint and performance.
TDLight Telegram Bot API is 100% compatible with the official version.
The Telegram Bot API provides an HTTP API for creating Telegram Bots.
If you've got any questions about bots or would like to report an issue with your bot, kindly contact @BotSupport in Telegram.
If you've got any questions about our fork, instead, join @TDLightChat in Telegram, or see the news at @TDLight.
Please note that only TDLight-specific issues are suitable for this repository.
Table of Contents
- TDLight features
- Installation
- Dependencies
- Usage
- Documentation
- Moving a bot to a local server
- Moving a bot from one local server to another
- License
TDLight features
Added features
TDLib replaced with TDLight
TDLight provides constant memory usage, unlike tdlib that must be restarted to reduce the heap size.
Command optimize_memory
Calling optimize_memory
will remove old data from the in-memory cache and give the freed memory back to the os
Command getmessageinfo
Get information about a message
Parameters
chat_id
Message chat idmessage_id
Message id
Returns message
Document the following methods:
Command getparticipants
Get the member list of a supergroup or channel
Parameters
chat_id
Chat idfilter
String, possible values aremembers
,parameters
,admins
,administators
,restricted
,banned
,bots
offset
Number of users to skiplimit
The maximum number of users be returned; up to 200
Returns ChatMember
Command deletemessages
Delete all the messages with message_id in range between start
and end
.
The start
parameter MUST be less than the end
parameter
Both start
and end
must be positive non zero numbers
The method will always return true
as a result, even if the messages cannot be deleted
This method does not work on private chat or normal groups
It is not suggested to delete more than 200 messages per call
NOTE
The maximum number of messages to be deleted in a single batch is determined by the max-batch-operations
parameter and is 10000 by default
Parameters
chat_id
Chat idstart
First message id to deleteend
Last message id to delete
Returns true
Command ping
Send an MTProto ping message to the telegram servers. Useful to detect the delay of the bot api server.
Parameters
No parameters
Returns string
Ping delay in seconds represented as string.
Executable flag relative
If enabled, allow only relative paths for files in local mode.
Executable flag insecure
Allow http connection in non-local mode
Executable parameter max-batch-operations
maximum number of batch operations (default 10000)
Modified features
Command getchat
The command getchat
will also try to resolve the username online, if it can't be found locally
Object message
The message
object now has two new fields:
views
: how many views has the message (usually the views are shown only for channel messages)forwards
: how many times the message has been forwarded
Object ChatMember
The ChatMember
object now has two new fields:
joined_date
: integer, unix timestamp, when has the user joinedinviter
:User
, the inviter
Object Chat
The Chat
object now has two new fields:
is_verified
: bool, optional, default false. Is the chat verified by Telegram, clients show a verified batchis_scam
: bool, optional, default false. Is the chat reported for scam, clients show a warning to the user
Object User
The User
object now has two new fields:
is_verified
: bool, optional, default false. Is the user verified by Telegram, clients show a verified batchis_scam
: bool, optional, default false. Is the user reported for scam, clients show a warning to the user
In addition, the member list now shows the full bot list (previously only the bot that executed the query was shown)
Installation
The simplest way to build and install Telegram Bot API server
is to use our Telegram Bot API server build instructions generator.
If you do that, you'll only need to choose the target operating system to receive the complete build instructions.
In general, you need to install all Telegram Bot API server
dependencies and compile the source code using CMake:
git clone --recursive https://github.com/tdlib/telegram-bot-api.git
cd telegram-bot-api
mkdir build
cd build
cmake -DCMAKE_BUILD_TYPE=Release ..
cmake --build . --target install
Dependencies
To build and run Telegram Bot API server
you will need:
- OpenSSL
- zlib
- C++14 compatible compiler (e.g., Clang 3.4+, GCC 4.9+, MSVC 19.0+ (Visual Studio 2015+), Intel C++ Compiler 17+) (build only)
- gperf (build only)
- CMake (3.0.2+, build only)
Usage
Use telegram-bot-api --help
to receive the list of all available options of the Telegram Bot API server.
The only mandatory options are --api-id
and --api-hash
. You must obtain your own api_id
and api_hash
as described in https://core.telegram.org/api/obtaining_api_id and specify them using the --api-id
and --api-hash
options
or the TELEGRAM_API_ID
and TELEGRAM_API_HASH
environment variables.
To enable Bot API features not available at https://api.telegram.org
, specify the option --local
. In the local mode the Bot API server allows to:
- Download files without a size limit.
- Upload files up to 2000 MB.
- Upload files using their local path and the file URI scheme.
- Use an HTTP URL for the webhook.
- Use any local IP address for the webhook.
- Use any port for the webhook.
- Set max_webhook_connections up to 100000.
- Receive the absolute local path as a value of the file_path field without the need to download the file after a getFile request.
The Telegram Bot API server accepts only HTTP requests, so a TLS termination proxy needs to be used to handle remote HTTPS requests.
By default the Telegram Bot API server is launched on the port 8081, which can be changed using the option --http-port
.
Documentation
See Bots: An introduction for developers for a brief description of Telegram Bots and their features.
See the Telegram Bot API documentation for a description of the Bot API interface and a complete list of available classes, methods and updates.
See the Telegram Bot API server build instructions generator for detailed instructions on how to build the Telegram Bot API server.
Subscribe to @BotNews to be the first to know about the latest updates and join the discussion in @BotTalk.
Moving a bot to a local server
To guarantee that your bot will receive all updates, you must deregister it with the https://api.telegram.org
server by calling the method logOut.
After the bot is logged out, you can replace the address to which the bot sends requests with the address of your local server and use it in the usual way.
If the server is launched in --local
mode, make sure that the bot can correctly handle absolute file paths in response to getFile
requests.
Moving a bot from one local server to another
If the bot is logged in on more than one server simultaneously, there is no guarantee that it will receive all updates. To move a bot from one local server to another you can use the method logOut to log out on the old server before switching to the new one.
If you want to avoid losing updates between logging out on the old server and launching on the new server, you can remove the bot's webhook using the method deleteWebhook, then use the method close to close the bot instance. After the instance is closed, locate the bot's subdirectory in the working directory of the old server by the bot's user ID, move the subdirectory to the working directory of the new server and continue sending requests to the new server as usual.
License
Telegram Bot API server
source code is licensed under the terms of the Boost Software License. See LICENSE_1_0.txt for more information.