pub const JABBER_CLIENT: &'static str = "jabber:client";
pub const DISCO_INFO: &'static str = "http://jabber.org/protocol/disco#info";
pub const DATA_FORMS: &'static str = "jabber:x:data";
pub const MEDIA_ELEMENT: &'static str = "urn:xmpp:media-element";
pub const JINGLE: &'static str = "urn:xmpp:jingle:1";
pub const PING: &'static str = "urn:xmpp:ping";
pub const CHATSTATES: &'static str = "http://jabber.org/protocol/chatstates";
pub const IBB: &'static str = "http://jabber.org/protocol/ibb";
pub const RECEIPTS: &'static str = "urn:xmpp:receipts";