To elaborate, pretty much every TLS framework provides either a quick option to disable validation, or to provide your own validation callback. In this case, the LLM put something like 'sslValidate=false', despite that not perhaps being valid for the particular library in question, but the 'intent' was clear.
Further, in this case it was some library that modeled a connection for reuse, but did not make a TLS connection until the first request had been completed. Including of course transmitting the associated header.
Once it made a request, at least the LLM assumed it could fetch the raw certificate regardless of 'validation' as a property of the connection (don't recall if it hallucinated it or if it were real, it is at least consitent with some TLS socket frameworks)
I don't know what you are imagining, but plenty of frameworks model an TLS connection as a persistent element with certificate information available as a property or return from an instance method.
To put in pseudocode, assuming a fairly popular HTTP client library called 'httpclient'
conn = httpclient.Connection(servername, ssl=True, verify=false)
conn.set_auth_headers(username, password)
conn.get('/')
if (custom_certificate_invalid(conn.get_certificate()))
error_out() ....
It's been a while so I forgot the details and which parameters were hallucinated, but it is roughly in line with the design of a number of HTTP client libraries I've seen as they wrap TLS connections.
If you say this is stupid, well that was the point, the LLM suggested something very stupid, but roughly possible with the design of TLS/HTTP libraries in the various ecosystems. Yes, you have better options in a lot of the libraries, like a custom handler that gets called *only* after the stock validation has happened, or if you need to replace the stock validation a callback that gets called at the right time, or a callback just to indicate what should be considered to be the name of the peer but otherwise let the validation logic be normal.