From 79a451e5763eda8b10d00684d5d3378f3255ee01 Mon Sep 17 00:00:00 2001
From: luiso1979 <luis.perezsanchez@kopjra.com>
Date: Mon, 8 Apr 2024 21:53:30 +0200
Subject: [PATCH] [networking] Respect `SSLKEYLOGFILE` environment variable
 (#9543)

Authored by: luiso1979
---
 yt_dlp/networking/_helper.py | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/yt_dlp/networking/_helper.py b/yt_dlp/networking/_helper.py
index d79dd7953..ecaff36e7 100644
--- a/yt_dlp/networking/_helper.py
+++ b/yt_dlp/networking/_helper.py
@@ -2,6 +2,7 @@
 
 import contextlib
 import functools
+import os
 import socket
 import ssl
 import sys
@@ -121,6 +122,9 @@ def make_ssl_context(
     context = ssl.SSLContext(ssl.PROTOCOL_TLS_CLIENT)
     context.check_hostname = verify
     context.verify_mode = ssl.CERT_REQUIRED if verify else ssl.CERT_NONE
+    # OpenSSL 1.1.1+ Python 3.8+ keylog file
+    if hasattr(context, 'keylog_filename'):
+        context.keylog_filename = os.environ.get('SSLKEYLOGFILE')
 
     # Some servers may reject requests if ALPN extension is not sent. See:
     # https://github.com/python/cpython/issues/85140