Hi all. Akka.IO does not handle non-fatal socket errors like WSAEWOULDBLOCK (System.Net.Sockets.SocketError.WouldBlock) -- is it a feature or something not implemented? From MSDN: Resource temporarily unavailable. This error is returned from operations on nonblocking sockets that cannot be completed immediately, for example recv when no data is queued to be read from the socket. It is a nonfatal error, and the operation should be retried later.