显示所有连接到套接字服务器的客户端并向他们发送数据

Question

I have this simple code:

import socket

socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
socket.bind((host, port))
socket.listen()
while True:
    client_socket, addr = socket.accept()
    send = input("Send: ") # but I need a way to send it to all the clients connected
    if send == "devices":
    # here I'd have a list of all devices connected
    client_socket.send(send.encode())
    data = client_socket.recv(4096)
    print (data)

As I wrote in the comments, I need a way to manage them all in one. How can I do? Maybe with _thread library?

Answer 1

You could mainitain a list of clients that can be passed to an external function that performs an action on all clients.

import socket

host = ''
port = 1000
max_connections = 5


socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
socket.bind((host, port))
socket.listen(max_connections)
clients = []    # Maintain a list of clients
try:
    while True:
        client_socket, addr = socket.accept()
        clients.append(client_socket)    #Add client to list on connection
        i_manage_clients(clients)       #Call external function whenever necessary
except KeyboardInterrupt:
    socket.close()

def i_manage_clients(clients):    #Function to manage clients
    for client in clients:
        client.send('Message to pass')

The above example demonstrates how send data to all clients at once. You could use the

import socket
from thread import *

host = ''
port = 1000
max_connections = 5


socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
socket.bind((host, port))
socket.listen(max_connections)
try:
    while True:
        client_socket, addr = socket.accept()
        start_new_thread(i_manage_client, (client_socket,addr))
except KeyboardInterrupt:
    socket.close()

def i_manage_client(client_socket, addr):    #Function to manage clients
    client_socket.send('Message to pass')
    data = client_socket.recv(4096)
    print(client_socket)
    print(addr)
    print(data)