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[utils] Enable ALPN in HTTPS to satisfy broken servers

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See https://github.com/yt-dlp/yt-dlp/issues/3878
This commit is contained in:
dirkf 2022-05-28 13:52:51 +01:00
parent 187a48aee2
commit 52c3751df7
1 changed files with 19 additions and 0 deletions
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19
youtube_dl/utils.py
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@ -2292,12 +2292,30 @@ def formatSeconds(secs):
def make_HTTPS_handler(params, **kwargs):
# https://www.rfc-editor.org/info/rfc7301
ALPN_PROTOCOLS = ['http/1.1']
def set_alpn_protocols(ctx):
# From https://github.com/yt-dlp/yt-dlp/commit/2c6dcb65fb612fc5bc5c61937bf438d3c473d8d0
# Thanks @coletdjnz
# Some servers may (wrongly) reject requests if ALPN extension is not sent. See:
# https://github.com/python/cpython/issues/85140
# https://github.com/yt-dlp/yt-dlp/issues/3878
try:
ctx.set_alpn_protocols(ALPN_PROTOCOLS)
except (AttributeError, NotImplementedError):
# Python < 2.7.10, not ssl.HAS_ALPN
pass
opts_no_check_certificate = params.get('nocheckcertificate', False)
if hasattr(ssl, 'create_default_context'): # Python >= 3.4 or 2.7.9
context = ssl.create_default_context(ssl.Purpose.SERVER_AUTH)
set_alpn_protocols(context)
if opts_no_check_certificate:
context.check_hostname = False
context.verify_mode = ssl.CERT_NONE
try:
return YoutubeDLHTTPSHandler(params, context=context, **kwargs)
except TypeError:
@ -2313,6 +2331,7 @@ def make_HTTPS_handler(params, **kwargs):
if opts_no_check_certificate
else ssl.CERT_REQUIRED)
context.set_default_verify_paths()
set_alpn_protocols(context)
return YoutubeDLHTTPSHandler(params, context=context, **kwargs)