GetQTypeName splits the provided addr into two parts: the QType (if any) and the name.

IsDynamicNode returns if the specified StoreAPI addr uses any kind of SD mechanism.

NewProvider returns a new empty provider with a given resolver type.

NewResolver creates a resolver with given underlying resolver.

A qtype performs A/AAAA lookup.

SRV qtype performs SRV lookup with A/AAAA lookup for each SRV result.

SRVNoA qtype performs SRV lookup without any A/AAAA lookup for each SRV result.

Provider is a stateful cache for asynchronous DNS resolutions.