python - 使用 python 套接字连接时服务器的响应为空

Question

我正在尝试使用 Python 连接到 URL https://www.ssehl.co.uk/HALO/publicLogon.do。

使用 requests 的简单解决方案失败了:

import requests
r = requests.get('https://www.ssehl.co.uk/HALO/publicLogon.do')
print r.text

有错误

File "c:\Python27\lib\site-packages\requests\adapters.py", line 327, in send
raise ConnectionError(e)
requests.exceptions.ConnectionError: HTTPSConnectionPool(host='www.ssehl.co.uk', port=443): Max retries exceeded with url: /HALO/publicLogon.do (Caused by <class 'httplib.BadStatusLine'>: '')

所以我尝试使用库 socket 从服务器获取原始响应:

import socket   #for sockets
import sys  #for exit

#create an INET, STREAMing socket
try:
    s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
except socket.error:
    print 'Failed to create socket'
    sys.exit()

print 'Socket Created'
host = 'www.ssehl.co.uk';
port = 443;

try:
    remote_ip = socket.gethostbyname(host)

except socket.gaierror:
    #could not resolve
    print 'Hostname could not be resolved. Exiting'
    sys.exit()

#Connect to remote server
s.connect((remote_ip , port))

print 'Socket Connected to ' + host + ' on ip ' + remote_ip

#Send some data to remote server
message = "GET /HALO/publicLogon.do HTTP/1.1\r\n\r\n"

try :
   #Set the whole string
   s.sendall(message)
except socket.error:
   #Send failed
   print 'Send failed'
   sys.exit()

print 'Message send successfully'

#Now receive data
reply = s.recv(4096)

print reply

将输出:

Socket Created
Socket Connected to www.ssehl.co.uk on ip 161.12.7.194
Message send successfully
Reply: 

回复后有一些垃圾我无法粘贴，但这是一个 sublime 控制台截图:

Screenshot

有没有办法像浏览器一样从服务器得到200响应？

Answer 1

出于某种原因，当您在 https 上使用 Python 的内置内容(urllib2、requests、httplib)或什至命令行内容(curl、wget)时，服务器会崩溃并给出错误的响应。

但是，当您通过常规 http 请求页面时，它工作正常，例如:

import urllib2
print urllib2.urlopen('http://www.ssehl.co.uk/HALO/publicLogon.do').getcode()

打印出来

>> 200

我的猜测是他们的服务器配置错误，您的浏览器以某种方式静默处理它。