+})
+
+
+def clean_proxies(proxies: dict, headers: HTTPHeaderDict):
+ req_proxy = headers.pop('Ytdl-Request-Proxy', None)
+ if req_proxy:
+ proxies.clear() # XXX: compat: Ytdl-Request-Proxy takes preference over everything, including NO_PROXY
+ proxies['all'] = req_proxy
+ for proxy_key, proxy_url in proxies.items():
+ if proxy_url == '__noproxy__':
+ proxies[proxy_key] = None
+ continue
+ if proxy_key == 'no': # special case
+ continue
+ if proxy_url is not None:
+ # Ensure proxies without a scheme are http.
+ proxy_scheme = urllib.request._parse_proxy(proxy_url)[0]
+ if proxy_scheme is None:
+ proxies[proxy_key] = 'http://' + remove_start(proxy_url, '//')
+
+ replace_scheme = {
+ 'socks5': 'socks5h', # compat: socks5 was treated as socks5h
+ 'socks': 'socks4' # compat: non-standard
+ }
+ if proxy_scheme in replace_scheme:
+ proxies[proxy_key] = urllib.parse.urlunparse(
+ urllib.parse.urlparse(proxy_url)._replace(scheme=replace_scheme[proxy_scheme]))