| # Copyright 2026 The Fuchsia Authors. All rights reserved. |
| # Use of this source code is governed by a BSD-style license that can be |
| # found in the LICENSE file. |
| |
| from __future__ import annotations |
| |
| from typing import TYPE_CHECKING, Any |
| |
| from shared.protocol.base import PROTOCOL_VERSION, Response |
| from shared.protocol.hello import ( |
| COMMAND_NAME, |
| HelloRequest, |
| ) |
| |
| __all__ = ["COMMAND_NAME", "handle"] |
| |
| if TYPE_CHECKING: |
| from daemon.daemon import Daemon |
| |
| |
| async def handle(daemon: Daemon, req: HelloRequest) -> Response[Any]: |
| """Handles the hello handshake request. |
| |
| Verifies the protocol version. |
| """ |
| if req.version != PROTOCOL_VERSION: |
| return Response( |
| success=False, |
| message=( |
| f"Protocol version mismatch. CLI version: {req.version}, " |
| f"Daemon version: {PROTOCOL_VERSION}" |
| ), |
| ) |
| |
| return Response(success=True, body={"protocol_version": PROTOCOL_VERSION}) |
