Struct ProxyFilter 

pub struct ProxyFilter { /* private fields */ }

Async wrapper around HostFilter that performs DNS resolution.

Implementations

impl ProxyFilter

pub fn new(allowed_hosts: &[String]) -> Self

Create a new proxy filter with the given allowed hosts.

pub fn allow_all() -> Self

Create a filter that allows all hosts (except deny list).

pub async fn check_host(&self, host: &str, port: u16) -> Result<CheckResult>

Check a host against the filter with async DNS resolution.

Resolves the hostname to IP addresses, then checks all resolved IPs against the deny CIDR list. If any IP is denied, the request is blocked (DNS rebinding protection).

On success, returns both the filter result and the resolved socket addresses. Callers MUST use resolved_addrs to connect to the upstream instead of re-resolving the hostname, eliminating the DNS rebinding TOCTOU window.

pub fn check_host_with_ips( &self, host: &str, resolved_ips: &[IpAddr], ) -> FilterResult

Check a host with pre-resolved IPs (no DNS lookup).

pub fn allowed_count(&self) -> usize

Number of allowed hosts configured.

Trait Implementations

impl Clone for ProxyFilter

fn clone(&self) -> ProxyFilter

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ProxyFilter

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

Formats the value using the given formatter.