Ident protocol implementation.
|Class||IdentError||Can't determine connection owner; reason unknown.|
|Class||NoUser||The connection specified by the port pair is not currently in use or currently not owned by an identifiable entity.|
|Class||HiddenUser||The server was able to identify the user of this port, but the information was not returned at the request of the user.|
|Class||ProcServerMixin||Implements lookup() to grab entries for responses from /proc/net/tcp|
|Class||IdentClient||No class docstring; 1/5 methods documented|