From your log it seems there is a problem on writing to the sockets. Don't really know what to suggest, but in caase this gives you some inspiration, these are the errors. The only clue would be that reference to "keep alive" activity... see if you have anything else network related running and try turn it off, and double check again eventual firewall setting
Good Luck
Claudio
WSAECONNRESET
(10054)
Connection reset by peer.
A existing connection was forcibly closed by the remote host. This normally results if the peer application on the remote host is suddenly stopped, the host is rebooted, or the remote host used a "hard close" (see setsockopt for more information on the SO_LINGER option on the remote socket.) This error may also result if a connection was broken due to "keep-alive" activity detecting a failure while one or more operations are in progress. Operations that were in progress fail with WSAENETRESET. Subsequent operations fail with WSAECONNRESET.
WSAETIMEDOUT
(10060)
Connection timed out.
A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond