What are common causes of 'connection reset by peer' errors in Indy?

Several factors can trigger this error. Common causes include: 1) Server-side issues (e.g., server overload, software bugs). 2) Network problems (e.g., firewall restrictions, network instability, packet loss). 3) The remote application unexpectedly terminating the connection. 4) The remote peer sending an incomplete or invalid response, causing the connection to be closed. 5) Connection timeouts on the client side.