+
+
+class PerRequestProxyHandler(compat_urllib_request.ProxyHandler):
+ def __init__(self, proxies=None):
+ # Set default handlers
+ for type in ('http', 'https'):
+ setattr(self, '%s_open' % type,
+ lambda r, proxy='__noproxy__', type=type, meth=self.proxy_open:
+ meth(r, proxy, type))
+ return compat_urllib_request.ProxyHandler.__init__(self, proxies)
+
+ def proxy_open(self, req, proxy, type):
+ req_proxy = req.headers.get('Ytdl-request-proxy')
+ if req_proxy is not None:
+ proxy = req_proxy
+ del req.headers['Ytdl-request-proxy']
+
+ if proxy == '__noproxy__':
+ return None # No Proxy
+ return compat_urllib_request.ProxyHandler.proxy_open(
+ self, req, proxy, type)
+
+
+def url_sanitize_consecutive_slashes(url):
+ """Sanitize URLs with consecutive slashes
+
+ For example, transform both
+ http://hostname/foo//bar/filename.html
+ and
+ http://hostname//foo/bar/filename.html
+ into
+ http://hostname/foo/bar/filename.html
+ """
+ parsed_url = list(compat_urlparse.urlparse(url))
+ parsed_url[2] = re.sub(r'/{2,}', '/', parsed_url[2])
+ return compat_urlparse.urlunparse(parsed_url)