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parse url and the result is tuple of
(hostname, port, resource path and the flag of secure mode)
Parameters
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url: str
url string.
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Try to retrieve proxy host and port from environment
if not provided in options.
Result is (proxy_host, proxy_port, proxy_auth).
proxy_auth is tuple of username and password
of proxy authentication information.
Parameters
----------
hostname: str
Websocket server name.
is_secure: bool
Is the connection secure? (wss) looks for "https_proxy" in env
before falling back to "http_proxy"
proxy_host: str
http proxy host name.
http_proxy_port: str or int
http proxy port.
http_no_proxy: list
Whitelisted host names that don't use the proxy.
http_proxy_auth: tuple
HTTP proxy auth information. Tuple of username and password. Default is None.
proxy_type: str
Specify the proxy protocol (http, socks4, socks4a, socks5, socks5h). Default is "http".
Use socks4a or socks5h if you want to send DNS requests through the proxy.
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