Implement result-set-management for LIST queries

ref #2948

louloulibs/xmpp/xmpp_component.hpp

@@ -31,6 +31,7 @@
 #define FORWARD_NS       "urn:xmpp:forward:0"
 #define CLIENT_NS        "jabber:client"
 #define DATAFORM_NS      "jabber:x:data"
+#define RSM_NS           "http://jabber.org/protocol/rsm"
 
 /**
  * An XMPP component, communicating with an XMPP server using the protocole
@@ -219,6 +220,9 @@ public:
 
   virtual void after_handshake() {}
 
+  const std::string& get_served_hostname() const
+  { return this->served_hostname; }
+
   /**
    * Whether or not we ever succeeded our authentication to the XMPP server
    */