wehub-resource-sync
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42 lines
1.9 KiB
Python
42 lines
1.9 KiB
Python
"""Connect to the same server factory twice — once per era, so `main` takes `targets` — and assert both are served."""
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import mcp_types as types
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from mcp_types.version import LATEST_HANDSHAKE_VERSION, LATEST_MODERN_VERSION
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from mcp.client import Client
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from stories._harness import TargetFactory, run_client
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async def main(targets: TargetFactory, *, mode: str = "auto") -> None:
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# ── modern arm: the caller's mode (the real-user "auto" default) probes
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# ``server/discover`` and adopts the result — no ``initialize`` handshake runs.
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# The version/info/capabilities accessors are era-neutral.
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async with Client(targets(), mode=mode) as modern:
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assert modern.protocol_version == LATEST_MODERN_VERSION
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assert modern.server_info.name == "dual-era-example"
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assert modern.server_capabilities.tools is not None
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listed = await modern.list_tools()
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assert [t.name for t in listed.tools] == ["greet"]
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result = await modern.call_tool("greet", {"name": "2026 client"})
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first = result.content[0]
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assert isinstance(first, types.TextContent)
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assert first.text == f"Hello, 2026 client! (served on the modern era at {LATEST_MODERN_VERSION})"
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# ── legacy arm: a fresh connection to the SAME server, pinned to the handshake era.
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# The same accessors are populated identically — here by ``initialize``.
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async with Client(targets(), mode="legacy") as legacy:
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assert legacy.protocol_version == LATEST_HANDSHAKE_VERSION
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assert legacy.server_info.name == "dual-era-example"
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assert legacy.server_capabilities.tools is not None
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result = await legacy.call_tool("greet", {"name": "2025 client"})
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first = result.content[0]
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assert isinstance(first, types.TextContent)
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assert first.text == f"Hello, 2025 client! (served on the legacy era at {LATEST_HANDSHAKE_VERSION})"
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if __name__ == "__main__":
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run_client(main)
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