ssl - Python requests with proxy results in SSLError WRONG_VERSION_NUMBER

Question

I can't use the different proxy in Python.

My code:

import requests

proxies = {
    "https":'https://154.16.202.22:3128',
    "http":'http://154.16.202.22:3128'
    }

r=requests.get('https://httpbin.org/ip', proxies=proxies)
print(r.json()) 

The error I'm getting is:

.
.
.
    raise MaxRetryError(_pool, url, error or ResponseError(cause))
urllib3.exceptions.MaxRetryError: HTTPSConnectionPool(host='httpbin.org', port=443): Max retries exceeded with url: /ip (Caused by SSLError(SSLError(1, '[SSL: WRONG_VERSION_NUMBER] wrong version number (_ssl.c:1122)')))

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
 
  .
  .
  .
requests.exceptions.SSLError: HTTPSConnectionPool(host='httpbin.org', port=443): Max retries exceeded with url: /ip (Caused by SSLError(SSLError(1, '[SSL: WRONG_VERSION_NUMBER] wrong version number (_ssl.c:1122)')))

I executed pip install requests.

I executed pip uninstall pyopenssl, then tried to pip install an old version of of pyopenssl but it didn't work.

Why is this not working?

question from:https://stackoverflow.com/questions/65541417/ssl-wrong-version-number-error-when-using-a-proxy-on-windows-10

Answer 1

The proxy you use simply does not support proxying https:// URLs:

$ https_proxy=http://154.16.202.22:3128 curl -v https://httpbin.org/ip
*   Trying 154.16.202.22...
* TCP_NODELAY set
* Connected to (nil) (154.16.202.22) port 3128 (#0)
* Establish HTTP proxy tunnel to httpbin.org:443
> CONNECT httpbin.org:443 HTTP/1.1
> Host: httpbin.org:443
> User-Agent: curl/7.52.1
> Proxy-Connection: Keep-Alive
> 
< HTTP/1.1 400 Bad Request

Apart from that the URL for the proxy itself is wrong - it should be http://.. and not https://.. even if you proxy HTTPS traffic. But requests actually ignores the given protocol completely, so this error is not the reason for the problem. But just to demonstrate that it would not work either if the proxy itself got accessed with HTTPS (as the URL suggests):

$ https_proxy=https://154.16.202.22:3128 curl -v https://httpbin.org/ip
*   Trying 154.16.202.22...
* TCP_NODELAY set
* Connected to (nil) (154.16.202.22) port 3128 (#0)
* ALPN, offering http/1.1
* Cipher selection: ALL:!EXPORT:!EXPORT40:!EXPORT56:!aNULL:!LOW:!RC4:@STRENGTH
* TLSv1.2 (OUT), TLS header, Certificate Status (22):
* TLSv1.2 (OUT), TLS handshake, Client hello (1):
* error:140770FC:SSL routines:SSL23_GET_SERVER_HELLO:unknown protocol
* Curl_http_done: called premature == 0
* Closing connection 0
curl: (35) error:140770FC:SSL routines:SSL23_GET_SERVER_HELLO:unknown protocol

So the fix here would be to use a different proxy, one which actually supports proxying https:// URLs.