refactor(examples): migrate all HTTP examples to streamable_http_app() (#2291)

examples/servers/simple-task-interactive/mcp_simple_task_interactive/server.py

@@ -6,8 +6,6 @@ This example shows the simplified task API where:
 - ServerTaskContext.elicit() and ServerTaskContext.create_message() queue requests properly
 """
 
-from collections.abc import AsyncIterator
-from contextlib import asynccontextmanager
 from typing import Any
 
 import click
@@ -15,9 +13,6 @@ import uvicorn
 from mcp import types
 from mcp.server import Server, ServerRequestContext
 from mcp.server.experimental.task_context import ServerTaskContext
-from mcp.server.streamable_http_manager import StreamableHTTPSessionManager
-from starlette.applications import Starlette
-from starlette.routing import Mount
 
 
 async def handle_list_tools(
@@ -134,23 +129,10 @@ server = Server(
 server.experimental.enable_tasks()
 
 
-def create_app(session_manager: StreamableHTTPSessionManager) -> Starlette:
-    @asynccontextmanager
-    async def app_lifespan(app: Starlette) -> AsyncIterator[None]:
-        async with session_manager.run():
-            yield
-
-    return Starlette(
-        routes=[Mount("/mcp", app=session_manager.handle_request)],
-        lifespan=app_lifespan,
-    )
-
-
 @click.command()
 @click.option("--port", default=8000, help="Port to listen on")
 def main(port: int) -> int:
-    session_manager = StreamableHTTPSessionManager(app=server)
-    starlette_app = create_app(session_manager)
+    starlette_app = server.streamable_http_app()
     print(f"Starting server on http://localhost:{port}/mcp")
     uvicorn.run(starlette_app, host="127.0.0.1", port=port)
     return 0