如何在Python请求中禁用SNI？

Question

I'm attempting to use requests to access a remote server over SSL. Unfortunately it's misconfigured such that it responds with the error TLSV1_UNRECOGNIZED_NAME during the SNI handshake, which is ignored by browsers but raises an exception in requests .

This appears to be the same issue as this question, but in Python rather than Java: SSL handshake alert: unrecognized_name error since upgrade to Java 1.7.0 `

The connection works perfectly in Python 2, which doesn't support SNI. How can I disable SNI in Python 3 so that the connection works?

Answer 1

I couldn't find a way to disable SNI on the requests level, but I found a hack that will trick it into thinking SNI isn't supported. Add this code before importing requests (not after, or it will be too late):

import ssl
ssl.HAS_SNI = False