ConnectionError
ConnectionError refers to failures encountered when attempting to establish or maintain a network connection. It is used as a generic label for errors in networking, client-server communication, or inter-process communication where a socket or channel cannot be opened or remains unusable.
In programming languages such as Python, ConnectionError is a built-in exception and a subclass of OSError.
Common causes include DNS resolution failures, host unreachable, the target port not accepting connections, timeouts, network
Handling considerations: distinguish between transient network issues and persistent problems; implement timeouts and retry policies; catch