Enum ImplicitBypass 

#[non_exhaustive]
pub enum ImplicitBypass {
    Broad,
    WinInet,
    CfNetwork,
    Empty,
}

The destinations a resolver sends direct with no list entry naming them: the implicit bypass set, held in BypassRules::implicit.

Each store’s own resolver has its own set, so a rule set read from a store carries that store’s: an implicit bypass the resolver does not have is a destination this crate reports direct while the machine sends it to the proxy. The WinInet and CfNetwork columns are the machine’s answer, measured by handing the resolver a proxy and an otherwise empty list and asking where each destination went; Empty is read off GLib’s and KIO’s matchers, which consult the list and nothing else.

Destination	Broad	WinInet	CfNetwork	Empty
localhost (any case)	✓	✓	✓
loopback	✓	✓
127.0.0.1, [::1]	✓	✓	✓
the rest of 127.0.0.0/8	✓
*.localhost, a trailing dot	✓
169.254.0.0/16, [fe80::]/10		✓
an IPv4-mapped spelling of a loopback address	✓

HostPattern::SubtractImplicit (<-loopback>) subtracts whichever set is in force.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

Broad

The loopback half of Chromium’s implicit rules (IsLocalhost, IPv4-mapped loopback) and WinINet’s loopback name. The default, and what parse::no_proxy carries: the environment variable has no single resolver to measure, and loopback is the part of Chromium’s set a local proxy has no use for. Chromium’s link-local ranges are left out: every no_proxy reader measured (Go, Python’s urllib, curl, .NET, hyper-util) sends 169.254.0.0/16 and fe80::/10 to the proxy, and 169.254.169.254 is the cloud instance-metadata endpoint, which an inspecting proxy is often there to see.

WinInet

WinINet’s, which parse::proxy_override and the Windows store carry: the names localhost and loopback, the addresses 127.0.0.1 and ::1, and the link-local ranges. The same six Chromium records as Windows’ own set.

CfNetwork

CFNetwork’s: the name localhost and the addresses 127.0.0.1 and ::1. CFNetwork applies it only while the settings carry a bypass key, so the macOS and iOS stores carry this set when the dictionary has an ExceptionsList array with at least one element or ExcludeSimpleHostnames switched on, and Empty otherwise, ExcludeSimpleHostnames set to 0 and an empty array included. A Mac configured through System Settings has the array while its list holds an entry; clearing the list leaves an empty one, which the system settings call drops.

Empty

No implicit bypass: every destination is decided by the entries. GNOME’s GSimpleProxyResolver and KDE’s KIO have none.

Trait Implementations

impl Clone for ImplicitBypass

fn clone(&self) -> Self

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for ImplicitBypass

impl Debug for ImplicitBypass

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for ImplicitBypass

fn default() -> Self

Returns the “default value” for a type.

impl Eq for ImplicitBypass

impl Hash for ImplicitBypass

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for ImplicitBypass

fn eq(&self, other: &Self) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for ImplicitBypass