WSAECONNABORTED (10053) Software caused connection abort.
Berkeley description: A connection abort was caused internal to your host machine. The software caused a connection abort because there is no space on the socket's queue and the socket cannot receive further connections.
WinSock description: Partly the same as Berkeley. The error can occur when the local network system aborts a connection. This would occur if WinSock aborts an established connection after data retransmission fails (receiver never acknowledges data sent on a datastream socket).
TCP/IP scenario: A connection will timeout if the local system doesn't receive an (ACK)nowledgement for data sent. It would also timeout if a (FIN)ish TCP packet is not ACK'd (and even if the FIN is ACK'd, it will eventually timeout if a FIN is not returned).
User suggestions: There are a number of things to check, that might help to identify why the failure occurred. Basically, you want to identify where the problem occurred.
· Ping the remote host you were connected to. If it doesn't respond, it might be off-line or there may be a network problem along the way. If it does respond, then this problem might have been a transient one (so you can reconnect now), or the server application you were connected to might have terminated (so you might not be able to connect again).
· Ping a local host to verify that your local network is still functioning (if on a serial connection, see next step)
· Ping your local router address. If you're on a serial connection, your local router is the IP address of the host you initially logged onto with SLIP or PPP.
· Ping a host on the same subnet as the host you were connected to (if you know one). This will verify that the destination network is functioning.
· Try a "traceroute" to the host you were connected to. This won't reveal too much unless you know the router addresses at the remote end, but it might help to identify if the problem is somewhere along the way.

WSAECONNRESET (10054) Connection reset by peer.
Berkeley description: A connection was forcibly closed by a peer. This normally results from a loss of the connection on the remote socket due to a timeout or a reboot.
WinSock description: Same as Berkeley. On a datastream socket, the connection was reset. This reset could be generated locally by the network system when it detects a connection failure, or it might be received from the remote host (in TCP terms, the remote host sent a RST packet). This error is also possible on a datagram socket; for instance, this error could result if your application sends a UDP datagram to a host, which rejects it by responding with an ICMP Port Unreachable.
User suggestions: Some network systems have commands to report statistics. In this case, it might be possible to check the count of TCP RST packets received, or ICMP Port Unreachable packets. See other suggestions under WSAECONNABORTED.