code: private void notifyChunkSize() {
          if (chunkSize > 0 && livePipe != null) {
              OOBControlMessage setChunkSize = new OOBControlMessage();
              setChunkSize.setTarget("ConnectionConsumer");
              setChunkSize.setServiceName("chunkSize");
              if (setChunkSize.getServiceParamMap() == null) {
                  setChunkSize.setServiceParamMap(new HashMap<String, Object>());
              }
              setChunkSize.getServiceParamMap().put("chunkSize", chunkSize);
              livePipe.sendOOBControlMessage(getProvider(), setChunkSize);
          }
      }
docs: Send OOB control message with chunk size