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fix: Python server dependency resolution and Docker host validation #333

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Merged
ochafik merged 2 commits into from
Jan 23, 2026
Merged

fix: Python server dependency resolution and Docker host validation #333

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49c16fc
fix(say-server): add --index flag to uv run for PyPI resolution
ochafik Jan 23, 2026
8ec8150
fix(qr-server): allow Docker bridge IP in transport security
ochafik Jan 23, 2026
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7 changes: 6 additions & 1 deletion examples/qr-server/server.py
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Original file line number Diff line number Diff line change
Expand Up @@ -19,6 +19,7 @@
import qrcode
import uvicorn
from mcp.server.fastmcp import FastMCP
from mcp.server.transport_security import TransportSecuritySettings
from mcp import types
from starlette.middleware.cors import CORSMiddleware

Expand Down Expand Up @@ -161,7 +162,11 @@ def view() -> str:
mcp.run(transport="stdio")
else:
# HTTP mode for basic-host (default) - with CORS
app = mcp.streamable_http_app(stateless_http=True)
# Allow Docker bridge IP for container-to-host communication
security = TransportSecuritySettings(
allowed_hosts=["127.0.0.1:*", "localhost:*", "[::1]:*", "172.17.0.1:*"]
)
app = mcp.streamable_http_app(stateless_http=True, transport_security=security)
app.add_middleware(
CORSMiddleware,
allow_origins=["*"],
Expand Down
4 changes: 2 additions & 2 deletions examples/say-server/package.json
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Original file line number Diff line number Diff line change
Expand Up @@ -10,8 +10,8 @@
},
"license": "MIT",
"scripts": {
"start": "uv run server.py",
"dev": "uv run server.py",
"start": "uv run --index https://pypi.org/simple server.py",
"dev": "uv run --index https://pypi.org/simple server.py",
"build": "echo 'No build step needed for Python server'"
},
"dependencies": {
Expand Down
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