fix RETRY button

app/src/main/java/chat/rocket/android/activity/MainActivity.java

@@ -201,8 +201,7 @@ public class MainActivity extends AbstractAuthedActivity {
           Snackbar.make(findViewById(getLayoutContainerForFragment()),
               R.string.fragment_retry_login_error_title, Snackbar.LENGTH_INDEFINITE)
               .setAction(R.string.fragment_retry_login_retry_title, view ->
-                  ConnectivityManager.getInstance(getApplicationContext())
-                      .connect(hostname).subscribe()));
+                  Session.retryLogin(RealmStore.get(hostname))));
     } else if (!session.isTokenVerified()) {
       statusTicker.updateStatus(StatusTicker.STATUS_TOKEN_LOGIN,
           Snackbar.make(findViewById(getLayoutContainerForFragment()),

app/src/main/java/chat/rocket/android/model/internal/Session.java

@@ -55,6 +55,24 @@ public class Session extends RealmObject {
     }
   }
 
+  /**
+   * retry authentication.
+   */
+  @DebugLog
+  public static void retryLogin(RealmHelper realmHelper) {
+    final Session session = realmHelper.executeTransactionForRead(realm ->
+        queryDefaultSession(realm).isNotNull(TOKEN).findFirst());
+
+    if (!session.isTokenVerified() || !TextUtils.isEmpty(session.getError())) {
+      realmHelper.executeTransaction(
+          realm -> realm.createOrUpdateObjectFromJson(Session.class, new JSONObject()
+              .put(ID, Session.DEFAULT_ID)
+              .put(TOKEN_VERIFIED, false)
+              .put(ERROR, JSONObject.NULL)))
+          .continueWith(new LogcatIfError());
+    }
+  }
+
   public int getSessionId() {
     return sessionId;
   }