python requests exception - keeps throwing errors

Question

Script works ok when receiving a HTTP 200. However as soon as I get an exception I receive a error. I know the website does not have a valid SSL cert installed and I've tried to requests.exceptions.RequestException to catch anything, but still throws me errors. I'll also get exceptions such as proxy error come up now and then, and requests.exceptions.RequestException would not catch it. I have also tried, under try: request.raise_for_status() and that still throws an error. Code is as follows:

def verify_ssl(proxy_info, target): 
   print('Attempting to verify SSL Cert on %s:443' % target)
   if proxy_info == None:
      response = requests.get('https://%s' % target)
   if proxy_info != None:
      response = requests.get('https://%s' % target, proxies=proxy_info)
   try:
      response
   except requests.exceptions.SSLError as g:
      print('SSL Verification Error %s' % g)
   return ('Successfully Verified SSL Cert: HTTP 200 received.\n')

Debug throws me this:

    Traceback (most recent call last):
  File "c:\Users\appleta\Desktop\ping.py", line 69, in <module>
    ssl_result = verify_ssl(proxy_info, target)
  File "c:\Users\appleta\Desktop\ping.py", line 37, in verify_ssl
    response = requests.get('https://%s' % target)
  File "C:\Python34\lib\site-packages\requests\api.py", line 72, in get
    return request('get', url, params=params, **kwargs)
  File "C:\Python34\lib\site-packages\requests\api.py", line 58, in request
    return session.request(method=method, url=url, **kwargs)
  File "C:\Python34\lib\site-packages\requests\sessions.py", line 512, in request
    resp = self.send(prep, **send_kwargs)
  File "C:\Python34\lib\site-packages\requests\sessions.py", line 622, in send
    r = adapter.send(request, **kwargs)
  File "C:\Python34\lib\site-packages\requests\adapters.py", line 511, in send
    raise SSLError(e, request=request)
requests.exceptions.SSLError: HTTPSConnectionPool(host='blabla.com', port=443): Max retries exceeded with url: / (Caused by SSLError(SSLError(1, '[SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed (_ssl.c:600)'),))

Giacomo Alzetta · Accepted Answer · 2018-08-14 15:03:53Z

3

In python the expression:

response

can never yield an exception. You have to put both get call inside the try block instead:

def verify_ssl(proxy_info, target): 
   print('Attempting to verify SSL Cert on %s:443' % target)
   try:
       if proxy_info is None:
          response = requests.get('https://%s' % target)
       else:
          response = requests.get('https://%s' % target, proxies=proxy_info)
   except requests.exceptions.SSLError as g:
      print('SSL Verification Error %s' % g)
      return 'Got SSL error'
   return 'Successfully Verified SSL Cert: HTTP 200 received.\n'

Also: note that you are always returning the string Successfully Verified SSL Cert ... because even in case of error you only print the error message but then execution resumes. You probably want to return something different in the except block.

answered Aug 14, 2018 at 15:03

Giacomo Alzetta

2,47911 silver badges17 bronze badges

Sign up to request clarification or add additional context in comments.

1 Comment

Andy Over a year ago

Fantastic Giacomo, thank you so much for that. I assumed that as i specified response to request.get it would pull that in the try command, so I didn't even think that could have been the issue. :)

Collectives™ on Stack Overflow

python requests exception - keeps throwing errors

1 Answer 1

1 Comment

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

1 Comment

Your Answer

Sign up or log in

Post as a guest

Related