What is the difference between error 10054 and error 10053 (connection aborted)?

While both indicate a terminated connection, error 10054 ('connection closed by remote host') specifically means the remote end actively closed the connection. Error 10053 ('connection aborted') generally implies a more abrupt, less controlled termination, often due to network issues or a crash that prevented a graceful shutdown from the remote end. However, the distinction can sometimes be subtle and depend on the exact circumstances.