**Memory Leak** in MCP Server – will be a memory leak until OOM (Out of Memory) occurs #1076

Server.py
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from mcp.server.fastmcp import FastMCP

# Create an MCP server
mcp = FastMCP("Demo Server")

# Add a simple tool
@mcp.tool()
def greet(name: str) -> str:
    """Return a greeting message."""
    return f"Hello, {name}!"

if __name__ == "__main__":
    # Run the server with streamable HTTP transport
    mcp.run(transport="streamable-http")

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client.py(（with a while loop）
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import asyncio
from mcp.client.streamable_http import streamablehttp_client
from mcp.client.session import ClientSession

async def call_tool(name: str):
    # Connect to the MCP server using streamable HTTP
    async with streamablehttp_client("http://127.0.0.1:8000/mcp") as (read, write, _):
        async with ClientSession(read, write) as session:
            # Initialize the connection
            await session.initialize()
            # Call the 'greet' tool
            result = await session.call_tool("greet", {"name": name})
            print(result)

async def main():
    while True:
        await call_tool("Bob")

if __name__ == "__main__":
    asyncio.run(main())
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