Crate layer 

layer: Telegram MTProto library

layer is a modular Rust library for the Telegram MTProto protocol. It consists of four focused sub-crates wired together here for convenience:

Sub-crate	Role
layer-tl-parser	Parse .tl schema files into an AST
layer-tl-gen	Generate Rust source from the AST (build-time)
layer-tl-types	Auto-generated types, functions & enums
layer-mtproto	Session state, message framing, transport traits

Quick start: raw API

use layer::tl::{functions, Serializable, RemoteCall};
use layer::mtproto::{Session, transport::AbridgedTransport};

// Build a raw TL request
let req = functions::help::GetConfig {};
let bytes = req.to_bytes();

// Pack it into an MTProto message
let mut session = Session::new();
let msg = session.pack(&req);
let wire = msg.to_plaintext_bytes();

// Send over your transport…

Updating the API layer

Replace layer-tl-types/tl/api.tl with the new schema and run cargo build. Everything else regenerates automatically.

Re-exports

pub use layer_tl_types as tl;

pub use layer_mtproto as mtproto;

pub use layer_crypto as crypto;

pub use layer_tl_parser as parser;parser

pub use layer_tl_gen as codegen;codegen

Modules

authentication

Sans-IO MTProto authorization key generation.

Structs

AuthKey

A Telegram authorization key (256 bytes) plus pre-computed identifiers.

EncryptedSession

MTProto 2.0 encrypted session state.

Finished

The final output of a successful auth key handshake.

Session

Tracks per-connection MTProto session state.

Constants

LAYER

The API layer this code was generated from.

Traits

Deserializable

Deserialize a value from TL binary format.

Identifiable

Every generated type has a unique 32-bit constructor ID.

RemoteCall

Marks a function type that can be sent to Telegram as an RPC call.

Serializable

Serialize self into TL binary format.

Functions

finish

Finalise the handshake.

step1

Generate a req_pq_multi request. Returns the request + opaque state.

step2

Process ResPQ and generate req_DH_params.

step3

Process ServerDhParams into a reusable DhParamsForRetry + send the first set_client_DH_params request.