diff --git a/chat.java b/chat.java
index 871b6fb..f1317b8 100644
--- a/chat.java
+++ b/chat.java
@@ -29,8 +29,12 @@ public class chat {
     }
 
     public synchronized void connect(String user, Consumer<String> callback) {
-        announce(user + " arrived");
+        for (Map.Entry<String, Consumer<String>> e : members.entrySet()) {
+            try { callback.accept(e.getKey() + " arrived"); }
+            catch (Exception ex) { disconnect(e.getKey()); }
+        }
         members.put(user, callback);
+        announce(user + " arrived");
     }
 
     public synchronized void disconnect(String user) {