gh-92679: Clarify asyncio.loop.start_tls parameters (GH-92682)
(cherry picked from commit 898d0d9ad8328326ba5f7df9952e9dc287766ca3)
Co-authored-by: Oleg Iarygin <oleg@arhadthedev.net>
diff --git a/Doc/library/asyncio-eventloop.rst b/Doc/library/asyncio-eventloop.rst
index 93bca96..cf9b3b7 100644
--- a/Doc/library/asyncio-eventloop.rst
+++ b/Doc/library/asyncio-eventloop.rst
@@ -856,9 +856,14 @@
Upgrade an existing transport-based connection to TLS.
- Return a new transport instance, that the *protocol* must start using
- immediately after the *await*. The *transport* instance passed to
- the *start_tls* method should never be used again.
+ Create a TLS coder/decoder instance and insert it between the *transport*
+ and the *protocol*. The coder/decoder implements both *transport*-facing
+ protocol and *protocol*-facing transport.
+
+ Return the created two-interface instance. After *await*, the *protocol*
+ must stop using the original *transport* and communicate with the returned
+ object only because the coder caches *protocol*-side data and sporadically
+ exchanges extra TLS session packets with *transport*.
Parameters:
