private void healthCheck() {
for (int i = 0; i < 3; i++) {
if (instances[i].getUrl() != null) {
String url = instances[i].getUrl() + "/lookup/random";
int responseCode = 0;
try {
responseCode = getResponseCode(url);
} catch (IOException e) {
// error when connection to server, dc is dead
System.out.println("error when connection to server, dc is dead");
instances[i].changeUrl(null);
isHealthy[i] = false;
continue;
}
if (responseCode != 200) {
System.out.println("dead dc response code is not 200");
instances[i].changeUrl(null);
isHealthy[i] = false;
}
}
}
updataHealthCount();
}
