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refactor: reorganize message handling for better type safety and clarity (#239)
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* refactor: improve typing with memory stream type aliases

Move memory stream type definitions to models.py and use them throughout
the codebase for better type safety and maintainability.

GitHub-Issue:#201

* refactor: move streams to ParsedMessage

* refactor: update test files to use ParsedMessage

Updates test files to work with the ParsedMessage stream type aliases
and fixes a line length issue in test_201_client_hangs_on_logging.py.

Github-Issue:#201

* refactor: rename ParsedMessage to MessageFrame for clarity

🤖 Generated with [Claude Code](https://claude.ai/code)
Co-Authored-By: Claude <noreply@anthropic.com>

* refactor: move MessageFrame class to types.py for better code organization

🤖 Generated with [Claude Code](https://claude.ai/code)
Co-Authored-By: Claude <noreply@anthropic.com>

* fix pyright

* refactor: update websocket client to use MessageFrame

Modified the websocket client to work with the new MessageFrame type,
preserving raw message text and properly extracting the root JSON-RPC
message when sending.

Github-Issue:#204

* fix: use NoneType instead of None for type parameters in MessageFrame

🤖 Generated with [Claude Code](https://claude.ai/code)

* refactor: rename root to message
This commit is contained in:
David Soria Parra 2025-03-13 13:44:55 +00:00 • committed by GitHub
commit 9d0f2daddb
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1 changed files with 283 additions and 151 deletions
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7
src/mcp/client/session.py
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@ -1,12 +1,11 @@
from datetime import timedelta
from typing import Any, Protocol
from anyio.streams.memory import MemoryObjectReceiveStream, MemoryObjectSendStream
from pydantic import AnyUrl, TypeAdapter
import mcp.types as types
from mcp.shared.context import RequestContext
from mcp.shared.session import BaseSession, RequestResponder
from mcp.shared.session import BaseSession, ReadStream, RequestResponder, WriteStream
from mcp.shared.version import SUPPORTED_PROTOCOL_VERSIONS
@ -59,8 +58,8 @@ class ClientSession(
):
def __init__(
self,
read_stream: MemoryObjectReceiveStream[types.JSONRPCMessage | Exception],
write_stream: MemoryObjectSendStream[types.JSONRPCMessage],
read_stream: ReadStream,
write_stream: WriteStream,
read_timeout_seconds: timedelta | None = None,
sampling_callback: SamplingFnT | None = None,
list_roots_callback: ListRootsFnT | None = None,