private void performCreateWithLargeValue(VM memberVM) {
    memberVM.invoke("perform create", () -> {
      byte[] value = new byte[SMALL_BUFFER_SIZE * 20];
      Arrays.fill(value, (byte) 1);
      cache.getRegion(regionName).put("testKey", value);
    });
  }
This class tests cluster tcp/ip communications both with and without SSL enabled
geode-core/src/upgradeTest/java/org/apache/geode/ClusterCommunicationsDUnitTest.java