On 19 Aug 2004, at 21:05, Grzegorz Makarewicz wrote: > http://support.microsoft.com/default.aspx?scid=kb;en-us;201213 > When large blocks of data (for example, 3-4 MB) are sent over a > blocking socket, send eventually fails with error 10055, WSAENOBUFS. Hmm.. I was under the impression that Twisted used non-blocking sockets.