python的socket编程

socket主要用于长连接 

简单DEMO：

Server端:

import socket

server = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
server.bind(('0.0.0.0', 8000))
server.listen()
sock, addr = server.accept()

# 获取从客户端发送的数据
data = sock.recv(1024)
print(data.decode("utf8"))

sock.send("Hi,{}".format(data.decode("utf8")).encode("utf8"))

server.close()
sock.close()

client端:

import socket

client = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
client.connect(('127.0.0.1', 8000))
client.send("feng".encode("utf8"))
data = client.recv(1024)
print(data.decode("utf8"))
client.close()

结果：

server：  feng

client：  Hi，feng

简易聊天室：

Server端:

import socket
import threading

server = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
server.bind(('0.0.0.0', 8000))
server.listen()


def handle_sock(sock, addr):
    data = sock.recv(1024)  # 接
    print(data.decode("utf8"))
    re_data = input()
    sock.send(re_data.encode("utf8"))  # 回


# 获取从客户端发送的数据
# 一次获取1k数据
while True:
    sock, addr = server.accept()

    # 用线程去处理新接收的连接(用户)
    client_thread = threading.Thread(target=handle_sock, args=(sock, addr))
    client_thread.start()

client端:

import socket

client = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
client.connect(('127.0.0.1', 8000))

while True:
    re_data = input()
    client.send(re_data.encode("utf8"))  # 发

    data = client.recv(1024)  # 接
    print(data.decode("utf8"))

结果：

多个client可以给server发消息