Willem Jiang 162fb2143e
fix(mcp): skip session pooling for HTTP/SSE transports to avoid anyioRuntimeError (#3203) (#3224)
* fix(mcp): skip session pooling for HTTP/SSE transports to avoid anyio RuntimeError (#3203)

  HTTP/SSE transports use anyio.TaskGroup internally for streamable
  connections. These task groups have cancel scopes bound to the async task
  that created them, so closing a pooled session from a different task
  raises RuntimeError. Restrict session pooling to stdio transports only.

* Potential fix for pull request finding

Co-authored-by: Copilot Autofix powered by AI <175728472+Copilot@users.noreply.github.com>

* docs: clarify MCP pooling applies only to stdio tools

Agent-Logs-Url: https://github.com/bytedance/deer-flow/sessions/2dd9881d-54c6-45fd-90bc-154a09e29841

Co-authored-by: WillemJiang <219644+WillemJiang@users.noreply.github.com>

---------

Co-authored-by: Copilot Autofix powered by AI <175728472+Copilot@users.noreply.github.com>
Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
2026-05-27 08:32:57 +08:00
..