From 387d57b3e51aad0881c899b902324b9edc55ece1 Mon Sep 17 00:00:00 2001
From: Yemre Cakiroglu <y.emrecakiroglu@protonmail.com>
Date: Thu, 12 Mar 2026 14:23:30 +0100
Subject: [PATCH] fix: ssl negotiation unhandled exception

---
 asyncpg/connect_utils.py | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/asyncpg/connect_utils.py b/asyncpg/connect_utils.py
index 07c4fdde..bf6ebc0d 100644
--- a/asyncpg/connect_utils.py
+++ b/asyncpg/connect_utils.py
@@ -944,7 +944,10 @@ def data_received(self, data: bytes) -> None:
     def connection_lost(self, exc: typing.Optional[Exception]) -> None:
         if not self.on_data.done():
             if exc is None:
-                exc = ConnectionError('unexpected connection_lost() call')
+                exc = ConnectionResetError(
+                    'PostgreSQL server at "{host}:{port}" '
+                    'closed the connection during SSL negotiation'.format(
+                        host=self.host, port=self.port))
             self.on_data.set_exception(exc)