Stop OTR session on disable OTR in the settings. Fixes #98.

src/com/xabber/android/data/SettingsManager.java

@@ -32,6 +32,7 @@ import com.xabber.android.data.account.AccountManager;
 import com.xabber.android.data.account.StatusMode;
 import com.xabber.android.data.connection.NetworkManager;
 import com.xabber.android.data.extension.attention.AttentionManager;
+import com.xabber.android.data.extension.otr.OTRManager;
 import com.xabber.android.data.message.MessageManager;
 import com.xabber.android.data.notification.NotificationManager;
 import com.xabber.android.data.roster.AbstractContact;
@@ -772,6 +773,9 @@ public class SettingsManager implements OnInitializedListener,
 		} else if (key.equals(Application.getInstance().getString(
 				R.string.chats_attention_key))) {
 			AttentionManager.getInstance().onSettingsChanged();
+		} else if (key.equals(Application.getInstance().getString(
+				R.string.security_otr_mode_key))) {
+			OTRManager.getInstance().onSettingsChanged();
 		}
 	}
 

src/com/xabber/android/data/extension/otr/OTRManager.java

@@ -691,16 +691,25 @@ public class OTRManager implements OtrEngineHost, OtrEngineListener,
 		});
 	}
 
-	@Override
-	public void onClose() {
+	private void endAllSessions() {
 		NestedMap<String> entities = new NestedMap<String>();
 		entities.addAll(actives);
 		for (Entry<String> entry : entities)
 			try {
 				endSession(entry.getFirst(), entry.getSecond());
 			} catch (NetworkException e) {
-				// Just ignore.
+				LogManager.exception(this, e);
 			}
 	}
 
+	@Override
+	public void onClose() {
+		endAllSessions();
+	}
+
+	public void onSettingsChanged() {
+		if (SettingsManager.securityOtrMode() == SecurityOtrMode.disabled)
+			endAllSessions();
+	}
+
 }