ice calladder

1 把这些ice 打log, 查看输出时序

g_object_set(G_OBJECT(handle->agent), "upnp", FALSE, NULL);
	g_object_set(G_OBJECT(handle->agent), "controlling-mode", handle->controlling, NULL);
	g_signal_connect (G_OBJECT (handle->agent), "candidate-gathering-done",
		G_CALLBACK (janus_ice_cb_candidate_gathering_done), handle);
	g_signal_connect (G_OBJECT (handle->agent), "component-state-changed",
		G_CALLBACK (janus_ice_cb_component_state_changed), handle);
#ifndef HAVE_LIBNICE_TCP
	g_signal_connect (G_OBJECT (handle->agent), "new-selected-pair",
#else
	g_signal_connect (G_OBJECT (handle->agent), "new-selected-pair-full",
#endif
		G_CALLBACK (janus_ice_cb_new_selected_pair), handle);
	if(janus_full_trickle_enabled) {
#ifndef HAVE_LIBNICE_TCP
		g_signal_connect (G_OBJECT (handle->agent), "new-candidate",
#else
		g_signal_connect (G_OBJECT (handle->agent), "new-candidate-full",
#en