[PATCH v2 0/5] MR6490: winsock: Avoid short writes on nonblocking sockets.

[Paul Gofman (＠gofman)]

--
  v2: server: Correct STATUS_NOT_FOUND return from (cancel_async).
      ntdll: Don't cancel background socket sends.
      ntdll: Locally duplicated socket fd for background send.
      ntdll: Avoid short writes on nonblocking sockets.
      ws2_32/Tests: Add tests for send buffering.

https://gitlab.winehq.org/wine/wine/-/merge_requests/6490