第九章：Python高级编程-Python socket编程

Python3高级核心技术97讲 笔记

目录
第九章：Python高级编程-Python socket编程
9.1 弄懂HTTP、Socket、TCP这几个概念
9.2 client和server实现通信
9.3 socket模拟http请求

9.1 弄懂HTTP、Socket、TCP这几个概念

Socket为我们封装好了协议

9.2 client和server实现通信

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"))

    data = client.recv(1024)

    print(data.decode("utf8"))

# client.send("bobby".encode("utf8"))

# data = client.recv(1024)

# print (data.decode("utf8"))

# client.close()

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):

    while True:

        data = sock.recv(1024)

        print(data.decode("utf8"))

        re_data = input()

        sock.send(re_data.encode("utf8"))

#获取从客户端发送的数据

#一次获取1k的数据

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()

    # data = sock.recv(1024)

    # print(data.decode("utf8"))

    # re_data = input()

    # sock.send(re_data.encode("utf8"))

    # server.close()

    # sock.close()

9.3 socket模拟http请求

# requests -> urlib -> socket

import socket

from urllib.parse import urlparse

def get_url(url):

    #通过socket请求html

    url = urlparse(url)

    host = url.netloc

    path = url.path

    if path == "":

        path = "/"

    #建立socket连接

    client = socket.socket(socket.AF_INET, socket.SOCK_STREAM)

    # client.setblocking(False)

    client.connect((host, 80)) #阻塞不会消耗cpu

    #不停的询问连接是否建立好， 需要while循环不停的去检查状态

    #做计算任务或者再次发起其他的连接请求

    client.send("GET {} HTTP/1.1\r\nHost:{}\r\nConnection:close\r\n\r\n".format(path, host).encode("utf8"))

    data = b""

    while True:

        d = client.recv(1024)

        if d:

            data += d

        else:

            break

    data = data.decode("utf8")

    html_data = data.split("\r\n\r\n")[1]

    print(html_data)

    client.close()

if __name__ == "__main__":

    import time

    start_time = time.time()

    for url in range(20):

        url = "http://shop.projectsedu.com/goods/{}/".format(url)

        get_url(url)

    print(time.time()-start_time)

第九章：Python高级编程-Python socket编程的相关教程结束。