并发编程补充：基于多进程实现并发的套接字通信

服务端：

from multiprocessing import Process
from socket import *


def talk(conn):
    while True:
        try:
            data = conn.recv(1024)
            if not data: break
            conn.send(data.upper())

        except ConnectionResetError:
            break

    conn.close()


def server(ip, port):
    server = socket(AF_INET, SOCK_STREAM)
    server.setsockopt(SOL_SOCKET, SO_REUSEADDR, 1)
    server.bind((ip, port))
    server.listen(5)

    while True:
        conn, addr = server.accept()
        p = Process(target=talk, args=(conn,))
        p.start()

    server.close()


if __name__ == '__main__':
    server('127.0.0.1', 8080)
    

多个客户端并发运行：

from socket import *

client = socket(AF_INET, SOCK_STREAM)
client.connect(('127.0.0.1', 8080))

while True:
    msg = input('>>: ').strip()
    if not msg: continue

    client.send(msg.encode('utf-8'))
    data = client.recv(1024)
    print(data.decode('utf-8'))