python之socket实现web服务器（简单）-马育民老师

# 概述
本文通过socket编程实现TCP服务器，接收浏览器请求，观察浏览器发来的请求数据
```
#encoding=utf-8

import socket,threading

LEN=1024
PORT=8080

def handle(socket,addr):
    print('new request')
    buff=bytes()
    while True:
        data=socket.recv(LEN)
        buff+=data
        if b'\r\n\r\n'==buff[-4:]:
            break
    header=buff.decode('utf-8')
    print(header)
    # hearders=header.split('\r\n')
    # print(hearders)
    socket.close()

def main():
    server=socket.socket()
    server.bind(('0.0.0.0',PORT))
    server.listen(128)
    print('启动成功，port：',PORT)
    while True:
        client,addr=server.accept()
        threading.Thread(target=handle,args=(client,addr)).start()

if __name__ == "__main__":
    main()
```
启动上面的程序，打开浏览器在地址栏输入```http://127.0.0.1:8080```发请求，接收浏览器发来的数据

如果是谷歌浏览器，发送的请求头信息如下：
```
GET / HTTP/1.1
Host: 127.0.0.1
Connection: keep-alive
Pragma: no-cache
Cache-Control: no-cache
Upgrade-Insecure-Requests: 1
User-Agent: Mozilla/5.0 (Windows NT 6.3; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.25 Safari/537.36 Core/1.70.3676.400 QQBrowser/10.4.3505.400
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8
Accept-Encoding: gzip, deflate, br
Accept-Language: zh-CN,zh;q=0.9

```

### 说明
```
Connection: keep-alive
```
表示长连接，http1.1协议支持长连接

```
Accept-Encoding: gzip, deflate, br
```
告诉服务器可以将数据压缩

原文出处：http://www.malaoshi.top/show_1EF3OoqiPD2R.html