Server and Client have a default value for their log, which can be overridden by callers of their constructors. If none are provided, nothing should be printed, if one is, it should be used for these messages, rather than using the global log.
clientFile does not need to log a failure from Close at all, the caller will receive the error value directly, and the context added to the message, is already implied by the protocol.
ServerandClienthave a default value for their log, which can be overridden by callers of their constructors. If none are provided, nothing should be printed, if one is, it should be used for these messages, rather than using the globallog.clientFiledoes not need to log a failure fromCloseat all, the caller will receive the error value directly, and the context added to the message, is already implied by the protocol.