 /// Schedule timer. Uses the get_timeout method on the callback.
<br>&nbsp; virtual int schedule_timer (void);
<p>&nbsp; /// get the transport.
<br>&nbsp; TAO_AV_Transport *transport (void);
<p>&nbsp; /// set/get protocol_object.
<br>&nbsp; TAO_AV_Protocol_Object* protocol_object (void);
<br>&nbsp; void protocol_object (TAO_AV_Protocol_Object *protocol_object);
<p>&nbsp; /// set the callback.
<br>&nbsp; void callback (TAO_AV_Callback *callback);
<p>&nbsp; /// Handle timeout. called from reactor.
<br>&nbsp;