'SignalR Java Client not working in Android 12
I implemented SignalR Java Client in my Android Project. It works well on Android Versions 6 to 11 but fails on Android 12, I'm getting this error only on Android 12 java.net.SocketException: Socket closed [Ljava.lang.StackTraceElement;@e95116d
, here is my code:
import android.content.Context;
import com.google.gson.Gson;
import com.google.gson.GsonBuilder;
import com.microsoft.signalr.HubConnection;
import com.microsoft.signalr.HubConnectionBuilder;
import com.microsoft.signalr.OnClosedCallback;
import org.json.JSONObject;
import java.util.Timer;
import java.util.TimerTask;
import java.util.concurrent.TimeUnit;
import timber.log.Timber;
public class SignalRChatService {
Timer timer = new Timer();
public void startTimer()
{
timer.scheduleAtFixedRate(new TimerTask() {
@Override
public void run() {
// Your code here
Timer_Elapsed();
}
}, 1000, 2000);
}
private void Timer_Elapsed()
{
try
{
module.checkNetwork(context);
if(!Connected)
{
Init();
}
}
catch (Exception e)
{
Connected = false;
}
}
private HubConnection _connection;
public boolean Connected;
public String instanceName;
public int instanceProfileId;
private boolean connecting;
private SignalRMessageReceivedEvents signalRMessageReceivedEvents;
private final Gson gson;
private final Context context;
public SignalRChatService(Context context, String instanceName, int instanceProfileId, SignalRMessageReceivedEvents signalRMessageReceivedEvents) {
this.instanceName = instanceName;
this.instanceProfileId = instanceProfileId;
this.connecting = false;
this.context = context;
this.signalRMessageReceivedEvents = signalRMessageReceivedEvents;
gson = new GsonBuilder().setPrettyPrinting().create();
}
public void Stop()
{
try
{
_connection.stop();
}
catch(Exception ignored)
{}
}
public void Init()
{
if (connecting)
{
return;
}
try
{
connecting = true;
_connection = HubConnectionBuilder.create("https://" + instanceName.trim().toLowerCase() + ".com").build();
try
{
_connection.start();
Connected = true;
}
catch (Exception e)
{
Connected = false;
Timber.e("SignalR Push connect: %s", e.getLocalizedMessage());
return;
}
_connection.on("Message", (message) ->
{
try
{
// Separate this code affterwads
JSONObject messageObject = new JSONObject(message);
String Messagetype = (String) messageObject.get("messageType");
HandleWebSocketMessage(Messagetype, message);
}
catch (Exception ignored)
{
}
}, String.class);
_connection.onClosed(new OnClosedCallback() {
@Override
public void invoke(Exception exception) {
handleClosed();
}
});
}
catch (Exception ignored)
{
}
finally
{
connecting = false;
startTimer();
}
}
private void handleClosed()
{
try
{
TimeUnit.MILLISECONDS.sleep(100);
}
catch (Exception ignored)
{
}
Init();
}
}
I've tried upgrading to the latest version of SignalR Java Client
implementation "com.microsoft.signalr:signalr:6.0.3"
and it is still not working. It just wont receive any Signal.
Sources
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Source: Stack Overflow
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