python - How to set max number of connections in SocketServer -

i'm trying find way how set limit - maximum number of connections in socketserver.

class threadedtcpserver(socketserver.threadingmixin, socketserver.tcpserver):     daemon_threads = true   class threadedtcprequesthandler(socketserver.baserequesthandler):     def handle(self):         code  

is there way how that? example maximum 3 clients.

the simplest solution count active connections , stop serving new connections when limit reached. downsize new tcp connections accepted , closed. hope that's ok.

the code i'm using in server not based on socketserver looks this:

a variable needed:

accepted_sockets = weakref.weakset() 

the weakset has advantage no longer used elements deleted automatically.

a trivial helper function:

def count_connections(self):      return sum(1 sock in accepted_sockets if sock.fileno() >= 0) 

and usage in request handling code straightforward:

   if count_connections() >= max_conn:         _logger.warning("too many simultaneous connections")         sock.close()         return     accepted_sockets.add(sock)     # handle request 

you have adapt use socketserver (e.g. tcp socket called request there, server handles socket.close, etc.), hope helps.