SSE (Backend)

SSE (Server-Sent Events) provides backward compatibility for clients that don't support Streamable HTTP.

Enabling SSE

let server = create_axum_server(
    server_info,
    handler,
    AxumServerOptions {
        sse_support: true, // default is true
        ..Default::default()
    },
);

When sse_support is true, the HTTP backend serves both Streamable HTTP endpoints and SSE endpoints. Clients can connect using either protocol.