private void acquireConnectionsAndPutonK1andK2(String host) {
    Region r1 = getCache().getRegion(SEPARATOR + REGION_NAME);
    r1.put("key1", "server-value1");
    r1.put("key2", "server-value2");
  }
Check to see if a client is connected to an endpoint with a specific port
geode-core/src/distributedTest/java/org/apache/geode/internal/cache/tier/sockets/UpdatePropagationDistributedTest.java