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Enhancement: make stderr of server subprocess configurable #191

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Merged
merged 3 commits into from
Mar 20, 2025
Merged

Enhancement: make stderr of server subprocess configurable #191

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467f307
make stderr of server subprocess configurable
sheffler Feb 5, 2025
64d45bb
Merge branch 'main' into fixFirstProgressReport
dsp-ant Mar 20, 2025
7687250
Update stdio.py
dsp-ant Mar 20, 2025
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6 changes: 3 additions & 3 deletions src/mcp/client/stdio.py
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Original file line number Diff line number Diff line change
Expand Up @@ -2,7 +2,7 @@
import sys
from contextlib import asynccontextmanager
from pathlib import Path
from typing import Literal
from typing import Literal, TextIO

import anyio
import anyio.lowlevel
Expand Down Expand Up @@ -87,7 +87,7 @@ class StdioServerParameters(BaseModel):


@asynccontextmanager
async def stdio_client(server: StdioServerParameters):
async def stdio_client(server: StdioServerParameters, errlog: TextIO = sys.stderr):
"""
Client transport for stdio: this will connect to a server by spawning a
process and communicating with it over stdin/stdout.
Expand All @@ -104,7 +104,7 @@ async def stdio_client(server: StdioServerParameters):
process = await anyio.open_process(
[server.command, *server.args],
env=server.env if server.env is not None else get_default_environment(),
stderr=sys.stderr,
stderr=errlog,
cwd=server.cwd,
)

Expand Down