pub struct Cidr { /* private fields */ }Expand description
A parsed <ip>/<prefix-len> CIDR host pattern.
Implementations§
Source§impl Cidr
impl Cidr
Sourcepub fn parse(host: &str) -> Result<Self, String>
pub fn parse(host: &str) -> Result<Self, String>
Parses host as a CIDR pattern the way Kafka’s CidrUtils.validate
does: a pattern containing : is IPv6 and goes to commons-net
SubnetUtils6, anything else is IPv4 and goes to SubnetUtils
(commons-net 3.13.0, the version Kafka trunk pins).
§Errors
Returns the commons-net IllegalArgumentException message; the caller
prefixes it with Invalid CIDR notation '<host>': to match Kafka’s
CreateAcls message. An IPv4-mapped IPv6 range (::ffff:10.0.0.0/104)
is refused, as Java resolves that literal to an Inet4Address and
SubnetUtils6 rejects it; the operator writes the plain IPv4 form.
Sourcepub fn contains(&self, ip: IpAddr) -> bool
pub fn contains(&self, ip: IpAddr) -> bool
True when ip falls within this range.
ip is canonicalized first (IpAddr::to_canonical), so an
IPv4-mapped IPv6 peer – what a dual-stack listener hands the request
path – unwraps to its IPv4 form before comparison and matches a plain
IPv4 CIDR. The CIDR itself is not canonicalized: CreateAcls only
ever stores the form an operator typed (10.0.0.0/8,
2001:db8::/32), never an IPv4-mapped IPv6 literal, so a mismatched
pair here is a genuine address-family mismatch and answers false,
the same as a literal host comparison would.
An IPv4 range never contains 0.0.0.0, even 0.0.0.0/0: commons-net
SubnetUtils.SubnetInfo.isInRange(int) refuses the zero address before
it compares. SubnetUtils6 has no such rule, so ::/0 contains ::.
Trait Implementations§
impl Copy for Cidr
impl Eq for Cidr
impl StructuralPartialEq for Cidr
Auto Trait Implementations§
impl Freeze for Cidr
impl RefUnwindSafe for Cidr
impl Send for Cidr
impl Sync for Cidr
impl Unpin for Cidr
impl UnsafeUnpin for Cidr
impl UnwindSafe for Cidr
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