import socket
from urllib.parse import urlparse
from selectors import DefaultSelector, EVENT_READ, EVENT_WRITE
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)
try:
#如果不try的话 则会有异常，因为链接还没建立好
#BlockingIOError: [WinError 10035] 无法立即完成一个非阻止性套接字操作。
client.connect((host, 80)) #阻塞不会消耗cpu
except BlockingIOError as e:
pass
#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
while True:
try:
#发送http请求
#请求行\r\n请求头\r\n\r\n请求体
client.send("GET {} HTTP/1.1\r\nHost:{}\r\nConnection:close\r\n\r\n".format(path, host).encode("utf8"))
break
except OSError as e:
pass
data = b""
while True:
try:
d = client.recv(1024)
except BlockingIOError as e:
continue
if d:
data += d
else:
break
data = data.decode("utf8")
html_data = data.split("\r\n\r\n")[1]
print(html_data)
client.close()
get_url(‘http://www.baidu.com‘)
响应结果：
响应行\r\n
响应头\r\n
...........\r\n
...........\r\n
...........
\r\n\r\n
响应体
"C:\Program Files\python3.5\python.exe" E:/pythoncode/day07/01.py HTTP/1.1 200 OK Accept-Ranges: bytes Cache-Control: no-cache Content-Length: 14615 Content-Type: text/html Date: Thu, 16 Aug 2018 08:52:32 GMT Etag: "5b56b4a8-3917" Last-Modified: Tue, 24 Jul 2018 05:10:00 GMT P3p: CP=" OTI DSP COR IVA OUR IND COM " Pragma: no-cache Server: BWS/1.1 Set-Cookie: BAIDUID=DCD58464E426E409DBF02803181718DB:FG=1; expires=Thu, 31-Dec-37 23:55:55 GMT; max-age=2147483647; path=/; domain=.baidu.com Set-Cookie: BIDUPSID=DCD58464E426E409DBF02803181718DB; expires=Thu, 31-Dec-37 23:55:55 GMT; max-age=2147483647; path=/; domain=.baidu.com Set-Cookie: PSTM=1534409552; expires=Thu, 31-Dec-37 23:55:55 GMT; max-age=2147483647; path=/; domain=.baidu.com Vary: Accept-Encoding X-Ua-Compatible: IE=Edge,chrome=1 Connection: close <!DOCTYPE html><!--STATUS OK--> <html> <head> <meta http-equiv="content-type" content="text/html;charset=utf-8"> <meta http-equiv="X-UA-Compatible" content="IE=Edge"> <link rel="dns-prefetch" href="//s1.bdstatic.com"/> <link rel="dns-prefetch" href="//t1.baidu.com"/> <link rel="dns-prefetch" href="//t2.baidu.com"/> <link rel="dns-prefetch" href="//t3.baidu.com"/> <link rel="dns-prefetch" href="//t10.baidu.com"/> <link rel="dns-prefetch" href="//t11.baidu.com"/> <link rel="dns-prefetch" href="//t12.baidu.com"/> <link rel="dns-prefetch" href="//b1.bdstatic.com"/>
原文地址：https://www.cnblogs.com/sunlong88/p/9488322.html
时间： 2024-11-05 20:31:51