def add_connected(c_id, room, client_e, client_n):
c_id = str(c_id)
room = str(room)
c_client = ConnectedClient()
c_client.client_id = c_id
c_client.room = room
c_client.e = client_e
c_client.n = client_n
c_client.connected = True
c_client.put()
mem_client = memcache.Client()
while True:
old_list = mem_client.gets(room, namespace="channels")
if not old_list:
old_list = list()
old_list = ConnectedClient.query(ConnectedClient.room == room).fetch()
mem_client.set(room, old_list, namespace="channels")
old_list.append(c_client)
if mem_client.cas(room, old_list, namespace="channels"):
break
