req urn:xmpp:http org.jivesoftware.smackx.hoxt.provider.HttpOverXmppReqProvider resp urn:xmpp:http org.jivesoftware.smackx.hoxt.provider.HttpOverXmppRespProvider chunk urn:xmpp:http org.jivesoftware.smackx.hoxt.provider.Base64BinaryChunkProvider sent urn:xmpp:carbons:2 org.jivesoftware.smackx.carbons.provider.CarbonManagerProvider received urn:xmpp:carbons:2 org.jivesoftware.smackx.carbons.provider.CarbonManagerProvider