wehub-resource-sync
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33 lines
1.2 KiB
Python
33 lines
1.2 KiB
Python
"""Call a tool whose SSE stream the server closes mid-flight; the call still completes. HTTP-only — no SSE on stdio."""
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import anyio
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from mcp_types import TextContent
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from mcp.client import Client
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from stories._harness import Target, run_client
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async def main(target: Target, *, mode: str = "auto") -> None:
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async with Client(target, mode=mode) as client:
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messages: list[str | None] = []
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async def on_progress(progress: float, total: float | None, message: str | None) -> None:
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messages.append(message)
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with anyio.fail_after(10):
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result = await client.call_tool("long_operation", {}, progress_callback=on_progress)
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# The result arrived — the client transport survived the server-initiated close,
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# reconnected with Last-Event-ID, and received the replayed response.
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assert not result.is_error, result
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assert isinstance(result.content[0], TextContent)
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assert result.content[0].text == "resumed"
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# "after-close" was emitted while no SSE stream was open; receiving it proves the
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# event store buffered it and the reconnect replayed it.
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assert messages == ["before-close", "after-close"], messages
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if __name__ == "__main__":
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run_client(main)
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