306 Switch Proxy - no longer unused
418 I’m a teapot - RFC 2324; a joke RFC 420 Enhance Your Calm - Twitter
Unexpected response from the server.
OpenTimeout, a subclass of Timeout::Error, is raised if a connection cannot be created within the open_timeout.
ReadTimeout, a subclass of Timeout::Error, is raised if a chunk of the response cannot be read within the read_timeout.
WriteTimeout, a subclass of Timeout::Error, is raised if a chunk of the response cannot be written within the write_timeout. Not raised on Windows.
Unexpected reply code returned from server.
Command is not supported on server.
Raised on redirection, only occurs when redirect option for HTTP is false.
Indicates a timeout resolving a name or address.
Represents an XML DOCTYPE declaration; that is, the contents of <!DOCTYPE … >. DOCTYPES can be used to declare the DTD of a document, as well as being used to declare entities used in the document.