Possible to add `_start_tls_compatible` attribute to `TCPTransport`?

• uvloop version: 0.19.0
• Python version: 3.10.7
• Platform: Linux
• Can you reproduce the bug with PYTHONASYNCIODEBUG in env?: Yes
• Does uvloop behave differently from vanilla asyncio? How?: Yes

aiohttp (3.9.1) keeps warning (falsely) about ^1

RuntimeWarning: An HTTPS request is being sent through an HTTPS proxy. This support for TLS in TLS is known to be disabled in the stdlib asyncio (Python <3.11). This is why you'll probably see an error in the log below.

It throws this warning because it's not able to find _start_tls_compatible property on the TCPTransport object (https://github.com/aio-libs/aiohttp/blob/v3.9.1/aiohttp/connector.py#L1054). The same property is present when asyncio is used which provides SelectorSocketTransport as the underlying transport. Is it possible to provide the _start_tls_compatible attribute on the TCPTransport which can help us avoid this warning?

Inizia confrontando il TCPTransport di uvloop con il SelectorSocketTransport di asyncio, poi leggi la documentazione di riferimento del connettore aiohttp collegata nell’issue per capire come viene verificato _start_tls_compatible. Il lavoro è completato quando TCPTransport espone l’attributo di compatibilità e aiohttp non emette più il falso avviso TLS-in-TLS.