python+socket服务端和客户端

服务端代码：

import socket
import time

print("服务端开启")
# 创建套接字
mySocket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
# 设置IP和端口
# host = socket.gethostname()
host = '127.0.0.1'
port = 3333
# bind绑定该端口
mySocket.bind((host, port))
# 监听
mySocket.listen(10)
while True:
    # 接收客户端连接
    print("等待连接....")
    client, address = mySocket.accept()
    print("新连接")
    print("IP is %s" % address[0])
    print("port is %dn" % address[1])
    while True:
        # 发送消息
        msg = "连接成功"
        client.send(msg.encode(encoding='utf-8'))
        print("发送完成")
        print(time.strftime('%Y-%m-%d %H:%M:%S', time.localtime(time.time())))  # 格式化时间戳为标准格式
        if msg == "EOF":
            break
        if msg == "quit":
            client.close()
            mySocket.close()
            print("程序结束n")
            exit()

        # 读取消息
        msg = client.recv(1024)
        print("服务端接收:", msg.decode("utf-8"))  # 把接收到的数据进行解码
        print("读取完成")
        if msg == b"EOF":
            break
        if msg == b"quit":
            client.close()
            mySocket.close()
            print("程序结束n")
            exit()

客户端代码：连接后保持连接

import socket

print("客户端开启")
# 创建套接字
mySocket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
# 设置ip和端口
# host = socket.gethostname()
host = '127.0.0.1'
port = 3333

try:
    mySocket.connect((host, port))  ##连接到服务器
    print("连接到服务器")
except:  ##连接不成功，运行最初的ip
    print('连接不成功')

while 1:
    # 接收消息
    msg = mySocket.recv(1024)
    print("客户端接收：%s" % msg.decode("utf-8"))  # 把接收到的数据进行解码
    print("读取完成")
    if msg == b"EOF":
        break
    if msg == b"quit":
        mySocket.close()
        print("程序结束n")
        exit()

    # 发送消息
    msg = input("客户端发送:")
    mySocket.send(msg.encode(encoding='utf-8'))
    print("发送完成")
    if msg == "EOF":
        break
    if msg == "quit":
        mySocket.close()
        print("程序结束n")
        exit()
print("程序结束n")

客户端代码：发送后自动断开连接

import socket
sk = socket.socket()
sk.connect(('127.0.0.1',3333))
msg = sk.recv(1024).decode('utf-8')  # 最多接受1024字节
print(msg)
sk.send('你好'.encode('utf-8'))
#sk.close()