fixed bug

lib/jam_websockets/router.rb

@@ -84,8 +84,10 @@ module JamWebsockets
           routing_key = headers.envelope.routing_key
           user_id = routing_key["user.".length..-1]
           @sempahore.synchronize do
+            @log.debug "USER ID = #{user_id}"
             contexts = @user_context_lookup[user_id]
 
+            @log.debug "CONTEXT = #{contexts}"
             unless contexts.nil?
             
               @log.debug "received user-directed message for user: #{user_id}"
@@ -507,7 +509,7 @@ module JamWebsockets
     def handle_heartbeat(heartbeat, client)
       context = @clients[client]
       @log.debug "updating timestamp for user #{context}"
-      connection = Connection.find_by_user_id_and_client_id(context.user.user_id, context.client.client_id)
+      connection = Connection.find_by_user_id_and_client_id(context.user.id, context.client.client_id)
       
       unless connection.nil?
         connection.updated_at = DateTime.now