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Add Streamable HTTP request body limits (#3095)

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Marcelo Trylesinski 2026-07-16 08:33:32 +02:00 • committed by GitHub
commit 03aaebd3aa
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1 changed files with 280 additions and 19 deletions
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7
src/mcp/server/mcpserver/server.py
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@ -87,7 +87,7 @@ from mcp.server.request_state import RequestStateBoundary, RequestStateSecurity
from mcp.server.sse import SseServerTransport
from mcp.server.stdio import stdio_server
from mcp.server.streamable_http import EventStore
from mcp.server.streamable_http_manager import StreamableHTTPSessionManager
from mcp.server.streamable_http_manager import DEFAULT_MAX_REQUEST_BODY_SIZE, StreamableHTTPSessionManager
from mcp.server.subscriptions import InMemorySubscriptionBus, ListenHandler, SubscriptionBus
from mcp.server.transport_security import TransportSecuritySettings
from mcp.shared.exceptions import MCPError
@ -369,6 +369,7 @@ class MCPServer(Generic[LifespanResultT]):
stateless_http: bool = ...,
event_store: EventStore | None = ...,
retry_interval: int | None = ...,
max_request_body_size: int = ...,
transport_security: TransportSecuritySettings | None = ...,
) -> None: ...
@ -1050,6 +1051,7 @@ class MCPServer(Generic[LifespanResultT]):
stateless_http: bool = False,
event_store: EventStore | None = None,
retry_interval: int | None = None,
max_request_body_size: int = DEFAULT_MAX_REQUEST_BODY_SIZE,
transport_security: TransportSecuritySettings | None = None,
) -> None:
"""Run the server using StreamableHTTP transport."""
@ -1061,6 +1063,7 @@ class MCPServer(Generic[LifespanResultT]):
stateless_http=stateless_http,
event_store=event_store,
retry_interval=retry_interval,
max_request_body_size=max_request_body_size,
transport_security=transport_security,
host=host,
)
@ -1209,6 +1212,7 @@ class MCPServer(Generic[LifespanResultT]):
stateless_http: bool = False,
event_store: EventStore | None = None,
retry_interval: int | None = None,
max_request_body_size: int = DEFAULT_MAX_REQUEST_BODY_SIZE,
transport_security: TransportSecuritySettings | None = None,
host: str = "127.0.0.1",
) -> Starlette:
@ -1219,6 +1223,7 @@ class MCPServer(Generic[LifespanResultT]):
stateless_http=stateless_http,
event_store=event_store,
retry_interval=retry_interval,
max_request_body_size=max_request_body_size,
transport_security=transport_security,
host=host,
auth=self.settings.auth,