Skip to main content

Documentation Index

Fetch the complete documentation index at: https://gofastmcp.com/llms.txt

Use this file to discover all available pages before exploring further.

​
fastmcp.server.middleware.ping

Ping middleware for keeping client connections alive.

​
Classes

​
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:

​
on_message 

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