Python--网络编程-----socket代码实例--聊天软件升级版

服务端代码：

import socket

HOST = ''
PORT = 50007

sock_server = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
sock_server.bind((HOST, PORT))

sock_server.listen(1)

while True:
    conn, addr = sock_server.accept()

    with conn:
        print('Connected by', addr)
        while True:
            try:
                data = conn.recv(1024)
                print("server recv:", conn.getpeername(), data.decode())
                if not data:
                    break

                conn.send(data.upper())
                print("send to alex:", data)
            except ConnectionResetError:
                break

客户端1代码：

import socket

HOST = 'localhost'
PORT = 50007

client = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
client.connect((HOST, PORT))

while True:
    msg = input(">>>:").strip()
    if len(msg) == 0:
        continue
    client.sendall(msg.encode())

    data = client.recv(1024)

    print('Received', data.decode())

客户端2代码：

import socket

HOST = 'localhost'
PORT = 50007

client = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
client.connect((HOST, PORT))

while True:
    msg = input(">>>:").strip()
    if len(msg) == 0:
        continue
    client.sendall(msg.encode())

    data = client.recv(1024)

    print('Received', data.decode())

先开启服务端，然后开启客户端1，客户端2，在客户端1输入信息能够收到服务端的响应信息，在客户端2输入信息不能收到服务端的响应信息，此时断开客户端1 的连接，客户端2可以正常收到服务端的响应信息，

客户端1运行结果：

>>>:客户端1
Received 客户端1
>>>:
Process finished with exit code 1

客户端2运行结果：

>>>:客户端2
Received 客户端2
>>>:

服务端运行结果：

Connected by ('127.0.0.1', 58852)
server recv: ('127.0.0.1', 58852) 客户端1
send to alex: b'xe5xaexa2xe6x88xb7xe7xabxaf1'
Connected by ('127.0.0.1', 58857)
server recv: ('127.0.0.1', 58857) 客户端2
send to alex: b'xe5xaexa2xe6x88xb7xe7xabxaf2'