Fix transport is None error (#7333)

Co-authored-by: Sviatoslav Sydorenko <sviat@redhat.com> (cherry picked from commit 3a54d37)
aio-libs · Jul 9, 2023 · d66ae93 · d66ae93
1 parent 6536cb5
commit d66ae93
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diff --git a/CHANGES/3355.bugfix b/CHANGES/3355.bugfix
@@ -0,0 +1 @@
+Fixed a transport is :data:`None` error -- by :user:`Dreamsorcerer`.
diff --git a/aiohttp/connector.py b/aiohttp/connector.py
@@ -1130,6 +1130,9 @@ async def _start_tls_connection(
                 f"[{type_err!s}]"
             ) from type_err
         else:
+            if tls_transport is None:
+                msg = "Failed to start TLS (possibly caused by closing transport)"
+                raise client_error(req.connection_key, OSError(msg))
             tls_proto.connection_made(
                 tls_transport
             )  # Kick the state machine of the new TLS protocol