Remove patch and use upstream SSEServerTransport

pyproject.toml

@@ -7,7 +7,7 @@ dependencies = [
     "python-dotenv>=1.1.0",
     "exceptiongroup>=1.2.2",
     "httpx>=0.28.1",
-    "mcp>=1.8.0,<2.0.0",
+    "mcp>=1.8.1,<2.0.0",
     "openapi-pydantic>=0.5.1",
     "rich>=13.9.4",
     "typer>=0.15.2",

src/fastmcp/server/http.py

@@ -13,6 +13,7 @@
 from mcp.server.auth.provider import OAuthAuthorizationServerProvider
 from mcp.server.auth.routes import create_auth_routes
 from mcp.server.auth.settings import AuthSettings
+from mcp.server.sse import SseServerTransport
 from mcp.server.streamable_http_manager import StreamableHTTPSessionManager
 from starlette.applications import Starlette
 from starlette.middleware import Middleware
@@ -22,7 +23,6 @@
 from starlette.routing import BaseRoute, Mount, Route
 from starlette.types import Receive, Scope, Send
 
-from fastmcp.low_level.sse_server_transport import SseServerTransport
 from fastmcp.utilities.logging import get_logger
 
 if TYPE_CHECKING: