From 46854a76604c88b960958ebed0ec58c51b417486 Mon Sep 17 00:00:00 2001
From: delobanov <37274413+delobanov@users.noreply.github.com>
Date: Wed, 28 Aug 2024 23:41:38 +0300
Subject: [PATCH] Fix ConnectionError() takes no keyword arguments with proxies
 (#4440)

---
 telethon/network/connection/connection.py | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/telethon/network/connection/connection.py b/telethon/network/connection/connection.py
index 838b3b88..fa034013 100644
--- a/telethon/network/connection/connection.py
+++ b/telethon/network/connection/connection.py
@@ -116,9 +116,15 @@ class Connection(abc.ABC):
             # python_socks internal errors are not inherited from
             # builtin IOError (just from Exception). Instead of adding those
             # in exceptions clauses everywhere through the code, we
-            # rather monkey-patch them in place.
+            # rather monkey-patch them in place. Keep in mind that
+            # ProxyError takes error_code as keyword argument.
 
-            python_socks._errors.ProxyError = ConnectionError
+            class ConnectionErrorExtra(ConnectionError):
+                def __init__(self, message, error_code=None):
+                    super().__init__()
+                    self.error_code = error_code
+
+            python_socks._errors.ProxyError = ConnectionErrorExtra
             python_socks._errors.ProxyConnectionError = ConnectionError
             python_socks._errors.ProxyTimeoutError = ConnectionError