并发编程补充：基于多线程实现并发的套接字通信

服务端：

from socket import *
from threading import Thread


def communicate(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.bind((ip, port))
    server.listen(5)

    while True:
        conn, addr = server.accept()
        t = Thread(target=communicate, args=(conn,))
        t.start()

    server.close()


if __name__ == '__main__':
    server('127.0.0.1', 8081)

多个客户端：

from socket import *

client = socket(AF_INET, SOCK_STREAM)
client.connect(('127.0.0.1', 8081))

while True:
    msg = input('>>: ').strip()
    if not msg: continue
    client.send(msg.encode('utf-8'))
    data = client.recv(1024)
    print(data.decode('utf-8'))

client.close()

• 基于线程池实现

服务端：

from concurrent.futures import ThreadPoolExecutor
from socket import *


def communicate(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.bind((ip, port))
    server.listen(5)

    while True:
        conn, addr = server.accept()
        pool.submit(communicate, conn)

    server.close()

客户端同上