http://jabber.org/features/amp amp amp Support for Advanced Message Processing XEP-0079: Advanced Message Processing http://jabber.org/features/compress compress compression Support for Stream Compression XEP-0138: Stream Compression http://jabber.org/features/iq-auth iq-auth auth Support for Non-SASL Authentication XEP-0078: Non-SASL Authentication http://jabber.org/features/iq-register iq-register register Support for In-Band Registration XEP-0077: In-Band Registration urn:ietf:params:xml:ns:xmpp-bind bind bind Support for Resource Binding RFC 6120: XMPP Core urn:ietf:params:xml:ns:xmpp-sasl mechanisms mechanisms Support for Simple Authentication and Security Layer (SASL) RFC 6120: XMPP Core urn:ietf:params:xml:ns:xmpp-session session session Support for IM Session Establishment RFC 6121: XMPP IM urn:ietf:params:xml:ns:xmpp-tls starttls starttls Support for Transport Layer Security (TLS) RFC 6120: XMPP Core urn:xmpp:bidi bidi bidi Support for Bidirectional Server-to-Server Connections XEP-0288: Bidirectional Server-to-Server Connections urn:xmpp:features:dialback Server Dialback dialback Support for Server Dialback with dialback errors XEP-0220: Server Dialback urn:xmpp:features:rosterver Roster Versioning ver Support for Roster Versioning RFC 6121: XMPP IM urn:xmpp:sm:3 sm sm Support for Stream Management XEP-0198: Stream Management http://jabber.org/protocol/caps caps c Hash of entity capabilities XEP-0115: Entity Capabilities urn:xmpp:caps ecaps2 c Indicate support for Entity Capabilities 2.0 and publish capabilities to peer. XEP-0390: XEP-0390: Entity Capabilities 2.0