多线程并发简单版

server-------------------

#!/usr/bin/python3
# -*- coding: utf-8 -*-
# @Time    : 2018/6/19 9:33
# @File    : server1.py


# 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()  # 建立连接
#         t = Thread(target=communicate, args=(conn, ))
#         t.start()
#
#     server.close()
#
#
# if __name__ == '__main__':
#     server('127.0.0.1', 8080)

# 基于线程池实现
from socket import *
from concurrent.futures import ThreadPoolExecutor


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()  # 建立连接
        pool.submit(communicate, conn)

    server.close()


if __name__ == '__main__':
    pool = ThreadPoolExecutor(2)  # 不要设置超过机器范围，2个不支持3个
    server('127.0.0.1', 8080)




client--------------------
# 可以右键启动多个
#!/usr/bin/python3
# -*- coding: utf-8 -*-
# @Time    : 2018/6/19 9:33
# @File    : client1.py
# 右键运行一次就是一个进程

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'))

client.close()