_xmpp-client-httppoll HTTP Polling connection method The http: or https: URL at which to contact the HTTP Polling connection manager or proxy XEP-0025 (DEPRECATED) _xmpp-client-xbosh XMPP Over Bosh connection method The http: or https: URL at which to contact the HTTP Binding connection manager or proxy XEP-0206: XMPP Over BOSH