Redis_Client is_connected=true, even when network redis device is unplugged

[Adityav2410]

Describe the bug
I connect to a remote redis-server. Later if i disconnect the remote device from network, redis_client still says is_connected=true

OS: ubuntu18,04
Aarch 64
cpp_redis: 4.4.0-beta.1 and master

int main() {

    cpp_redis::client redis_client;
    auto connCallbackFn = [&redis_client](const std::string& host,
                                          std::size_t port,
                                          cpp_redis::connect_state status) {
        std::string name = "Redis";
        LOG(ERROR) << "Redis Connector callback made. Status: ";
        if (status == cpp_redis::connect_state::dropped)
            LOG(INFO) << name << " Connection: Dropped";
        else if (status == cpp_redis::connect_state::start)
            LOG(INFO) << name << " Connection: Start";
        else if (status == cpp_redis::connect_state::sleeping)
            LOG(INFO) << name << " Connection: Sleeping";
        else if (status == cpp_redis::connect_state::ok)
            LOG(INFO) << name << " Connection: OK";
        else if (status == cpp_redis::connect_state::failed)
            LOG(INFO) << name << " Connection: Failed";
        else if (status == cpp_redis::connect_state::lookup_failed)
            LOG(INFO) << name << " Connection: LookupFailed";
        else if (status == cpp_redis::connect_state::stopped)
            LOG(INFO) << name << " Connection: Stopped";
    };
    redis_client.connect("192.168.0.17", 6379, connCallbackFn, 2000);
    while (true) {
        if (redis_client.is_connected())
            LOG(INFO) << "Connected...";
        else
            LOG(INFO) << "Not connected...";
        std::this_thread::sleep_for(std::chrono::seconds(2));
    }
}

Logs:

E0525 21:09:37.313364  2975 test_redis.cpp:14] Redis Connector callback made. Status: 
I0525 21:09:37.313477  2975 test_redis.cpp:18] Redis Connection: Start
E0525 21:09:37.314191  2975 test_redis.cpp:14] Redis Connector callback made. Status: 
I0525 21:09:37.314225  2975 test_redis.cpp:22] Redis Connection: OK
I0525 21:09:37.314242  2975 test_redis.cpp:33] Connected...
I0525 21:09:39.314694  2975 test_redis.cpp:33] Connected...

<UNPLUG REMOTE DEVICE FROM NETWORK>

I0525 21:09:41.315685  2975 test_redis.cpp:33] Connected...

Once i unplug my remote device with redis-server from network, I expect another callback, and the redis_client.is_connected() should return false.

Am I understanding it wrong. How to get informed if redis_client connection is lost?