请求Python中的url超过了最大重试次数

Question

我尝试将请求发送到此URL：站点URL

使用以下代码进行简单的页面阅读：

import requests
url_1 = 'http://www.dsit.org.ir/?cmd=page&Cid=92&title=Kontakt&lang=fa'
print(requests.get(url_1).text)

但是我得到这个错误：

requests.exceptions.ConnectionError: HTTPConnectionPool(host='www.srgfesrsergserg.com', port=80): Max retries exceeded with url: / (Caused by NewConnectionError('<urllib3.connection.HTTPConnection object at 0x0000008EC69AAA90>: Failed to establish a new connection: [Errno 11001] getaddrinfo failed'))

此网站非常基础，没有任何特殊的安全措施。此外，我只请求过一次

一切都很好，我用Requesthtml很容易打开这个页面，但我不知道这里有什么问题！

Answer 1

添加标题。

伪装浏览器。

import requests
headers = {
'user-agent': 'Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/86.0.4240.111 Safari/537.36'}
url_1 = 'http://www.dsit.org.ir/?cmd=page&Cid=92&title=Kontakt&lang=fa'
print(requests.get(url=url_1, headers=headers).text)

Answer 2

当向https://www.dsit.org.ir的公共IP地址发送过多请求时，会发生这种情况。正如您所看到的，这是由于某些原因导致的，不允许/阻止访问https://www.dsit.org.ir的公共IP地址映射。一个更好的解决方案是下面的python脚本，它计算任何域的公共IP地址，并创建到/etc/hosts文件的映射。

import re
import socket
import subprocess
from typing import Tuple
ENDPOINT = 'https://anydomainname.example.com/'
ENDPOINT = 'https://www.dsit.org.ir/'
def get_public_ip() -> Tuple[str, str, str]:
"""
Command to get public_ip address of host machine and endpoint domain
Returns
-------
my_public_ip : str
Ip address string of host machine.
end_point_ip_address : str
Ip address of endpoint domain host.
end_point_domain : str
domain name of endpoint.
"""
# bash_command = """host myip.opendns.com resolver1.opendns.com | 
#     grep "myip.opendns.com has" | awk '{print $4}'"""
# bash_command = """curl ifconfig.co"""
# bash_command = """curl ifconfig.me"""
bash_command = """ curl icanhazip.com"""
my_public_ip = subprocess.getoutput(bash_command)
my_public_ip = re.compile("[0-9.]{4,}").findall(my_public_ip)[0]
end_point_domain = (
ENDPOINT.replace("https://", "")
.replace("http://", "")
.replace("/", "")
)
end_point_ip_address = socket.gethostbyname(end_point_domain)
return my_public_ip, end_point_ip_address, end_point_domain

def set_etc_host(ip_address: str, domain: str) -> str:
"""
A function to write mapping of ip_address and domain name in /etc/hosts.
Ref: https://stackoverflow.com/questions/38302867/how-to-update-etc-hosts-file-in-docker-image-during-docker-build
Parameters
----------
ip_address : str
IP address of the domain.
domain : str
domain name of endpoint.
Returns
-------
str
Message to identify success or failure of the operation.
"""
bash_command = """echo "{}    {}" >> /etc/hosts""".format(ip_address, domain)
output = subprocess.getoutput(bash_command)
return output

if __name__ == "__main__":
my_public_ip, end_point_ip_address, end_point_domain = get_public_ip()
output = set_etc_host(ip_address=end_point_ip_address, domain=end_point_domain)
print("My public IP address:", my_public_ip)
print("ENDPOINT public IP address:", end_point_ip_address)
print("ENDPOINT Domain Name:", end_point_domain )
print("Command output:", output)

你可以在运行你想要的函数之前调用上面的脚本：(