From 59bb601cfeb0e9d7368ff4f592ae940c7eda78b0 Mon Sep 17 00:00:00 2001
From: Bosie Ionut <33691449+BosieIonut@users.noreply.github.com>
Date: Thu, 17 Oct 2024 23:35:22 +0300
Subject: [PATCH] Solved a little bug hopefully

When you are trying to connect to a domain with the dot at the end the smtp connection works just fine but starttls() will raise an handshake execption.
---
 Lib/smtplib.py | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/Lib/smtplib.py b/Lib/smtplib.py
index b3cc68a789a7d8..fdd5412adc7a44 100755
--- a/Lib/smtplib.py
+++ b/Lib/smtplib.py
@@ -776,8 +776,13 @@ def starttls(self, *, context=None):
                 raise RuntimeError("No SSL support included in this Python")
             if context is None:
                 context = ssl._create_stdlib_context()
+            if self._host[-1] is ".":
+                context_host = self._host[:-1]
+            else:
+                context_host = self._host
             self.sock = context.wrap_socket(self.sock,
-                                            server_hostname=self._host)
+                                            server_hostname=context_host)
+            
             self.file = None
             # RFC 3207:
             # The client MUST discard any knowledge obtained from