pub fn for_url(s: &str) -> Option<String> {
	let url = if let Ok(u) = Url::parse(s) {
		u
	} else {
		return None;
	};

	if is_no_proxy(&url) {
		return None;
	}

	let maybe_https_proxy = var_os("https_proxy")
		.or_else(|| var_os("HTTPS_PROXY"))
		.map(|v| v.to_str().unwrap_or("").to_string());
	let maybe_ftp_proxy = var_os("ftp_proxy")
		.or_else(|| var_os("FTP_PROXY"))
		.map(|v| v.to_str().unwrap_or("").to_string());
	let maybe_http_proxy = var_os("http_proxy")
		.or_else(|| var_os("HTTP_PROXY"))
		.map(|v| v.to_str().unwrap_or("").to_string());
	let maybe_all_proxy = var_os("all_proxy")
		.or_else(|| var_os("ALL_PROXY"))
		.map(|v| v.to_str().unwrap_or("").to_string());

	if let Some(url_value) = match url.scheme() {
		"https" => maybe_https_proxy.or(maybe_http_proxy.or(maybe_all_proxy)),
		"http" => maybe_http_proxy.or(maybe_all_proxy),
		"ftp" => maybe_ftp_proxy.or(maybe_http_proxy.or(maybe_all_proxy)),
		_ => maybe_all_proxy,
	} {
		if let Ok(mut proxy_url) = Url::parse(&url_value) {
			if proxy_url.host_str().is_some() {
				if proxy_url.port().is_some() {
					return Some(url_value);
				} else {
					if proxy_url.set_port(Some(8080)).is_ok() {
						return Some(proxy_url.as_str().to_string());
					}
				}
			}
		}
	}
	None
}
/// Extract proxy parameters for a URL by examining the environment variables.
///
/// Most environment variables described here can be defined either with an all-lowercase or an
/// all-uppercase name. If both versions are defined, the all-lowercase name takes precedence
///
/// If __no_proxy__ is defined, check the host part of the URL against its components and return
/// `None` if there is any match. The value of __no_proxy__ should be a space- or comma-separated
/// list of host/domain names or IP addresses for which no proxying should be done, or a single
/// '&#8239;__*__&#8239;' (asterisk) which means that proxying is disabled for all hosts.
///
/// If the port is not explicitly defined in the proxy URL, the value 8080 is used.
Extract proxy parameters for a URL by examining the environment variables.
Most environment variables described here can be defined either with an all-lowercase or an
all-uppercase name. If both versions are defined, the all-lowercase name takes precedence

If __no_proxy__ is defined, check the host part of the URL against its components and return
`None` if there is any match. The value of __no_proxy__ should be a space- or comma-separated
list of host/domain names or IP addresses for which no proxying should be done, or a single
' __*__ ' (asterisk) which means that proxying is disabled for all hosts.

If the port is not explicitly defined in the proxy URL, the value 8080 is used.
Extract proxy parameters for a URL by examining the environment variables . Most environment variables described here can be defined either with an all - lowercase or an all - uppercase name . If both versions are defined the all - lowercase name takes precedence If __no_proxy__ is defined check the host part of the URL against its components and return ` None ` if there is any match . The value of __no_proxy__ should be a space - or comma - separated list of host / domain names or IP addresses for which no proxying should be done or a single ' __ * __ ' ( asterisk ) which means that proxying is disabled for all hosts . If the port is not explicitly defined in the proxy URL the value 8080 is used .
pub fn for_url(s: &str) -> Option<String> {
	let url = if let Ok(u) = Url::parse(s) {
		u
	} else {
		return None;
	};
	if is_no_proxy(&url) {
		return None;
	}
	let maybe_https_proxy = var_os("https_proxy")
		.or_else(|| var_os("HTTPS_PROXY"))
		.map(|v| v.to_str().unwrap_or("").to_string());
	let maybe_ftp_proxy = var_os("ftp_proxy")
		.or_else(|| var_os("FTP_PROXY"))
		.map(|v| v.to_str().unwrap_or("").to_string());
	let maybe_http_proxy = var_os("http_proxy")
		.or_else(|| var_os("HTTP_PROXY"))
		.map(|v| v.to_str().unwrap_or("").to_string());
	let maybe_all_proxy = var_os("all_proxy")
		.or_else(|| var_os("ALL_PROXY"))
		.map(|v| v.to_str().unwrap_or("").to_string());
	if let Some(url_value) = match url.scheme() {
		"https" => maybe_https_proxy.or(maybe_http_proxy.or(maybe_all_proxy)),
		"http" => maybe_http_proxy.or(maybe_all_proxy),
		"ftp" => maybe_ftp_proxy.or(maybe_http_proxy.or(maybe_all_proxy)),
		_ => maybe_all_proxy,
	} {
		if let Ok(mut proxy_url) = Url::parse(&url_value) {
			if proxy_url.host_str().is_some() {
				if proxy_url.port().is_some() {
					return Some(url_value);
				} else {
					if proxy_url.set_port(Some(8080)).is_ok() {
						return Some(proxy_url.as_str().to_string());
					}
				}
			}
		}
	}
	None
}
pub fn for_url ( s : & str ) -> Option < String > { let url = if let Ok ( u ) = Url :: parse ( s ) { u } else { return None ; } ; if is_no_proxy ( & url ) { return None ; } let maybe_https_proxy = var_os ( " " ) . or_else ( | | var_os ( " " ) ) . map ( | v | v . to_str ( ) . unwrap_or ( " " ) . to_string ( ) ) ; let maybe_ftp_proxy = var_os ( " " ) . or_else ( | | var_os ( " " ) ) . map ( | v | v . to_str ( ) . unwrap_or ( " " ) . to_string ( ) ) ; let maybe_http_proxy = var_os ( " " ) . or_else ( | | var_os ( " " ) ) . map ( | v | v . to_str ( ) . unwrap_or ( " " ) . to_string ( ) ) ; let maybe_all_proxy = var_os ( " " ) . or_else ( | | var_os ( " " ) ) . map ( | v | v . to_str ( ) . unwrap_or ( " " ) . to_string ( ) ) ; if let Some ( url_value ) = match url . scheme ( ) { " " => maybe_https_proxy . or ( maybe_http_proxy . or ( maybe_all_proxy ) ) , " " => maybe_http_proxy . or ( maybe_all_proxy ) , " " => maybe_ftp_proxy . or ( maybe_http_proxy . or ( maybe_all_proxy ) ) , _ => maybe_all_proxy , } { if let Ok ( mut proxy_url ) = Url :: parse ( & url_value ) { if proxy_url . host_str ( ) . is_some ( ) { if proxy_url . port ( ) . is_some ( ) { return Some ( url_value ) ; } else { if proxy_url . set_port ( Some ( 8080 ) ) . is_ok ( ) { return Some ( proxy_url . as_str ( ) . to_string ( ) ) ; } } } } } None }
Extract proxy parameters for a URL by examining the environment variables.
Extract proxy parameters for a URL by examining the environment variables .
s
&str