Struct QDns 

pub struct QDns { /* private fields */ }

A main instance which contains all common logic. All requests for name/host resolutions should be perfomed using this structure.

let mut dns_req = 
    QDns::make_empty(None, QuerySetup::default()).unwrap();
   
dns_req.add_request(QType::SOA, "protonmail.com");

Implementations

impl QDns

pub fn make_empty( resolvers: Option<Arc<ResolveConfig>>, opts: QuerySetup, ) -> CDnsResult<Self>

Initializes new empty storage for requests.

Arguments

• resolvers - an Arc ResolveConfig which contains configuration i.e nameservers

• planned_reqs_len - how many requests are planned

• opts - QuerySetup additional options or overrides. Use default() for default values.

Returns

A CDnsResult is returned (Result alias) where:

• Result::Ok is returned with the new instance.

• Result::Err is returned with error description. The error may happen during attempt to read resolv config or obtain a cached verion.

pub fn add_request<R>(&mut self, qtype: QType, req_name: R) -> CDnsResult<()>

where R: TryInto<QDnsName, Error = CDnsError>,

Adds a new request to current instance.

Arguemnts

• qtype - a QType type of the request

• req_name - a Into QDnsName which is target. i.e ‘localhost’ or ‘domain.tld’

pub fn make_a_aaaa_request<R: AsRef<str>>( resolvers_opt: Option<Arc<ResolveConfig>>, req_name_ref: R, opts: QuerySetup, ) -> CDnsResult<Self>

This is helper which makes for you an A, AAAA query. The order of A and AAAA is defined in the ResolveConfig.

Use this function directly. Do not use QDns::make_empty

Arguments

• resolvers - an Option value Arc ResolveConfig which can be used to override the system’s resolv.conf

• req_name - a Into QDnsName which is target i.e ‘localhost’ or ‘domain.tld’

• opts - QuerySetup additional options or overrides. Use default() for default values.

Returns

A CDnsResult is returned;

• Result::Ok - with Self as inner type

• Result::Err is returned with error description. The error may happen during attempt to read resolv config or obtain a cached verion.

pub fn query(self) -> QDnsQueryResult

Runs the created query/ies consuming the instance.

Returns

A QDnsQueryResult is returned. It contains a pairs of the request and response result.

Trait Implementations

impl Clone for QDns

fn clone(&self) -> QDns

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for QDns

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

Formats the value using the given formatter.