Socket 服务

#!/usr/bin/env python
# -*- coding: utf-8 -*-
# @Time    : 2018/6/6 18:33
# @Author  : zhdya
# @File    : socket.py

import http.server
import socketserver

port = 8000

host = '127.0.0.1'

address = (host, port)

handle = http.server.SimpleHTTPRequestHandler

with socketserver.TCPServer(address, handle) as httpd:
    print("server start...")
    httpd.serve_forever()

server start...
127.0.0.1 - - [06/Jun/2018 19:34:19] "GET / HTTP/1.1" 200 -
127.0.0.1 - - [06/Jun/2018 19:34:20] code 404, message File not found
127.0.0.1 - - [06/Jun/2018 19:34:20] "GET /favicon.ico HTTP/1.1" 404 -
127.0.0.1 - - [06/Jun/2018 19:34:24] "GET /client.py HTTP/1.1" 200 -
127.0.0.1 - - [06/Jun/2018 19:34:27] "GET /ssh_client.py HTTP/1.1" 200 -
127.0.0.1 - - [06/Jun/2018 19:35:31] "GET /Server.py HTTP/1.1" 200 -
127.0.0.1 - - [06/Jun/2018 19:35:35] "GET /ssh_server.py HTTP/1.1" 200 -
127.0.0.1 - - [06/Jun/2018 19:37:49] "GET / HTTP/1.1" 200 -
127.0.0.1 - - [06/Jun/2018 19:37:50] "GET / HTTP/1.1" 200 -

socket不支持多并发，socketserver最主要的作用：就是实现一个并发处理，前面只是铺垫。 SocketServer主要是用于解决当多个客户端连接时， Socket服务端都会服务器上创建一个线程或进程来处理该客户端的请求，一个客户端对应一个后端的一个进程或者线程，这样增加系统的利用率。

import socket

host = 'www.baidu.com'
port = 80

new_ip = socket.gethostbyname(host)
print('Connect to', host, 'is', new_ip)

try:
    s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
    s.connect((new_ip, port))
    request = "GET / HTTP/1.1\r\nHost:www.baidu.com\r\n\r\n"
    print(type(request))
    s.sendall(request.encode("utf-8"))
    # python3 sendall发送的不是string，而是bytes        python2   要求发送的是string
    reply = s.recv(80960)
    if reply:
        print('ok!')
    else:
        print('on!')
    print(reply)
    s.close()
except socket.error as e:
    print(e)