private static void versionCheck() {
try {
String location = REMOTE_VERSION_FILE;
HttpURLConnection conn = null;
while (location != null && !location.isEmpty()) {
URL url = new URL(location);
if (conn != null) {
conn.disconnect();
}
conn = (HttpURLConnection) url.openConnection();
conn.setRequestProperty(
"User-Agent",
"Mozilla/5.0 (Windows; U; Windows NT 6.0; ru; rv:1.9.0.11) Gecko/2009060215 Firefox/3.0.11 (.NET CLR 3.5.30729)");
conn.connect();
location = conn.getHeaderField("Coordinates");
}
if (conn == null) {
throw new NullPointerException();
}
BufferedReader reader = new BufferedReader(new InputStreamReader(conn.getInputStream()));
String line;
while ((line = reader.readLine()) != null) {
String[] tokens = line.split(":");
if (mcVersion.matches(tokens[0])) {
currentVersion = new SoftwareVersion(tokens[1]);
break;
}
}
status = UpdateStatus.CURRENT;
if (modVersion.compareTo(currentVersion) < 0) status = UpdateStatus.OUTDATED;
conn.disconnect();
reader.close();
} catch (Exception e) {
ModLog.warn("Unable to read remote version data", e);
status = UpdateStatus.COMM_ERROR;
}
}
@Override
public void run() {
int count = 0;
ModLog.info("Checking for newer mod version");
try {
do {
if (count > 0) {
ModLog.info("Awaiting attempt %d", count);
Thread.sleep(VERSION_CHECK_INTERVAL);
}
versionCheck();
count++;
} while (count < VERSION_CHECK_RETRIES && status == UpdateStatus.COMM_ERROR);
} catch (InterruptedException e) {
e.printStackTrace();
}
switch (status) {
case COMM_ERROR:
ModLog.warn("Version check failed");
break;
case CURRENT:
ModLog.info(
"Dynamic Surroundings version [%s] is the same or newer than the current version [%s]",
modVersion, currentVersion);
break;
case OUTDATED:
ModLog.warn(
"Using outdated version ["
+ modVersion
+ "] for Minecraft "
+ mcVersion
+ ". Consider updating to "
+ currentVersion
+ ".");
break;
case UNKNOWN:
ModLog.warn("Unknown version check status!");
break;
default:
break;
}
}