b1b67841d1
Previously, looking up only IPv4 or IPv6 addresses was only possible with DefaultResolver via ResolveIPAddr. Add this functionality to the Resolver type with a new method, LookupIP. This largely brings Resolver functionally to parity with the global functions. The name LookupIP is used over ResolveIPAddr to be consistent with the other Resolver methods. There are two main benefits to (*Resolver).LookupIP over (*Resolver).LookupHost. First is an ergonomic benefit. Wanting a specific family of address is common enough to justify a method, evident by the existence of ResolveIPAddr. Second, this opens the possibility of not performing unnecessary DNS requests when only a specific family of addresses are needed. This optimization is left to follow up work. Updates #30452 Change-Id: I241f61019588022a39738f8920b0ddba900cecdd Reviewed-on: https://go-review.googlesource.com/c/go/+/228641 Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org> Reviewed-by: Emmanuel Odeke <emm.odeke@gmail.com> Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> |
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