Python TCP Server Accepting Connections and Broadcasting Commands

Question

I\'ve been working on a game using a number of Raspberry Pis, Python, and some buttons/switches. My game requires a central server that issues commands to multiple clients.

Answer 1

I have a multithread approach here :

s.listen(10)
    while 1:
        client_socket, addr = s.accept()
        print ('Connected with ' + addr[0] + ':' + str(addr[1]))
        threading.Thread(target=self.handler, args=(client_socket, addr)).start()        


def handler(self, client_socket, addr):
    while 1:
        data = client_socket.recv(BUFF)
        print ('Data : ' + repr(data) + "\n")
        data = data.decode("UTF-8")

I strongly recommend you two write a class for Server and Client, for each client create a Client object and connect it to Server, and store each connected Client (its socket and a name for example) to a dictionary as you did, then you want to broadcast a message you can go through all connected Clients in Server and broadcast message you want like this:

def broadcast(self, client_socket, message):
        for c in self.clients:
            c.send(message.encode("utf-8"))

Update

Because you have a thread that runs main you need another thread for running server , I suggest you write a start method for server and call it in a thread :

def start(self):
    # all server starts stuff comes here as define socket 
    self.s.listen(10)
    while 1:
        client_socket, addr = self.s.accept()
        print ('Connected with ' + addr[0] + ':' + str(addr[1]))
        threading.Thread(target=self.handler, args=(client_socket, addr)).start()

now in main section or main file after create server object run the start thread :

a = server()
threading.Thread(target=a.start).start()