python tcp，http客户端（socket while循环）

import socket,time
#coding:UTF-8
#发送的http包头
header_send='GET / HTTP/1.1\r\nHost: \r\nConnection: close\r\n\r\n'
i=0
#请求次数
num=10
#请求间隔
tinktime=1
#目的地址
ip_dst='192.168.5.202'
#目的端口
port_dst=80
while i<10:
s=socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.connect((ip_dst,port_dst))
s.send(header_send)
buffer = []
while True:
   # 每次最多接收1k字节:
   d = s.recv(1024)
   if d:
       buffer.append(d)
   else:
       break
data = b''.join(buffer)
s.close()
header, html = data.split(b'\r\n\r\n', 1)
print(header.decode('utf-8'))
# 把接收的数据写入文件:
#with open('sina.html', 'wb') as f:
   #f.write(html)
#i=i+1
#time.sleep(tinktime)