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fastmcp.server.middleware.ping

Ping middleware for keeping client connections alive.

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Classes

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PingMiddleware

Middleware that sends periodic pings to keep client connections alive. Starts a background ping task on first message from each session. The task sends server-to-client pings at the configured interval until the session ends. Methods:

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on_message 

on_message(self, context: MiddlewareContext, call_next: CallNext) -> Any
Start ping task on first message from a session.