Function domain::resolv::lookup::srv::lookup_srv

pub fn lookup_srv<N>(
    resolver: Resolver, 
    txt_service: N, 
    name: N, 
    fallback_port: u16
) -> LookupSrv where
    N: AsRef<DNameSlice>, 

Creates a future that looks up SRV records.

The future will use the resolver given in resolv to query the DNS for SRV records associated with domain name name and service txt_service. If name is a relative domain name, it is being translated into a series of absolute names according to the resolver’s configuration.

The value returned upon success can be turned into a Stream of SRVItem items corresponding to the found SRV records, ordered as per the usage rules defined in RFC 2782. If no matching SRV record is found, A/AAAA queries on the bare domain name name will be attempted, yielding a single element upon success. Each of those item can be turned into an iterator over socket addresses.

The future resolves to None whenever the request service is “decidedly not available” at the requested domain.