Whois 
go get github.com/domainr/whois
Whois client for Go (golang), inspired by Ruby Whois.
Design
func whois.Whois(query string) *whois.Record // Fetches and returns a fully-parsed whois.Record
request = whois.NewRequest(query) // Returns a prepared whois.Request
response = request.Fetch() // Fetches the request, returns a whois.Response
record = response.Parse() // Parses the response, returns a whois.Record
whois.Request — represents a qualified whois request, including server, URL, and request body
whois.Response — intermediate record, raw response from a whois server for a given query
whois.Record — parsed whois response; structured data
Logic
query := "domai.nr"
request, err := whois.NewRequest(query)
response, err := request.Fetch()
record, err := response.Parse()
if record.Refer != "" {
response = whois.FetchRefer(record)
}
TODO
- Create whois.Client
- Embed an http.Client in whois.Client to reuse state
- Implementations for known HTTP-based whois servers
- Parsers