Network errors recent build about 75% of time - codenameone

Question

I get network errors running on android. These do not appear in simulator or ios builds. The errors appears about 75% of the time and then will work correctly for one time. I did some debugging and the network call returns a 0 for response code and null for response content.
I've attached the call below for my get command. This code has not changed in many years (3?). I tried 2 different applications now and both exhibit the same behavior.
I've tried going back to older builds but my 'pro' license only allows me to go back to 1 latest???
I know its not the server as it works for iOS and simulator and 2 different application. I have been unable to figure this out.
An suggestions? I tried to use the new Rest, but it doesn't find the class (i went to latest).
public int doGet(final String url) {
if ( Display.getInstance().isEdt() ){
Log.e("*** Performing a GET network call on the EDT");
}
final ConnectionRequest request = new ConnectionRequest() {
#Override
protected void handleException(Exception err) {
if (Dialog.show("Connection error",
"Check your internet connection", "Retry", "Exit")) {
Display.getInstance().exitApplication();
} else {
retry();
}
}
};
request.setUrl(url);
request.setPost(false);
request.setFollowRedirects(false);
request.setReadResponseForErrors(true);
request.setSilentRetryCount(1);
request.addResponseCodeListener(new ActionListener() {
public void actionPerformed(ActionEvent evt) {
Log.d("Response code ResponseCodeListener, setting to -1");
responseCode = -1;
}
});
request.addResponseListener(new ActionListener() {
#Override
public void actionPerformed(ActionEvent evt) {
Log.e("Response listener action for GET performed " );
ConnectionRequest cr = (ConnectionRequest) evt.getSource();
responseCode = cr.getResponseCode();
Log.e("Response listener action for GET performed: " + cr.getResponseCode() );
if (cr.getResponseCode() == 200) {
responseData = new String(cr.getResponseData());
} else {
Log.e("Response code: " + cr.getResponseCode() + " of " + cr.getUrl() );
}
}
});
// request will be handled asynchronously
NetworkManager.getInstance().setTimeout(15000);
synchronized (lock) {
depth++;
}
try {
request.setDuplicateSupported(true);
NetworkManager.getInstance().addToQueueAndWait(request);
} finally {
synchronized (lock) {
depth--;
}
}
Log.d("Response: {0} {1}", responseCode, responseData);
return responseCode;
}
Log entries:
02-11 10:08:26.932 20250-20326/? D/Word Time: [Thread-18] 0:0:2,486 - Get: /jgame/game/6647?tkn=08F0D0B4E7EE80370B982DBEA261500ADB53266C1847175152-1461100
02-11 10:08:26.933 20250-20326/? D/Word Time: [Thread-18] 0:0:2,488 - Calling: GET http://server.wordtimelive.xyz/jgame/game/6647?tkn=08F0D0B4E7EE80370B982DBEA261500ADB53266C1847175152-1461100
02-11 10:08:26.934 20250-20326/? D/Word Time: [Thread-18] 0:0:2,489 - Get: http://server.wordtimelive.xyz/jgame/game/6647?tkn=08F0D0B4E7EE80370B982DBEA261500ADB53266C1847175152-1461100
02-11 10:08:27.207 20250-20326/? D/Word Time: [Thread-18] 0:0:2,762 - Response: 0 null
02-11 10:08:27.209 20250-20326/? D/Word Time: [Thread-18] 0:0:2,763 - content null of GET: http://server.wordtimelive.xyz/jgame/game/6647?tkn=08F0D0B4E7EE80370B982DBEA261500ADB53266C1847175152-1461100

Answer 1

Thanks for the help in tracking this. Steve fixed the concurrent modification exception in this commit https://github.com/codenameone/CodenameOne/commit/685172518e00a7b846993bbc35967cf49a0bc611
Based on the description it sounds like this is indeed the problem you were experiencing. It will be in the servers tomorrow (Friday February 16th 2018) and you can verify it.