In Go, you can check if a type satisfies a particular behavior by declaring an interface, and then checking if the type satisfies that interface. In your case, you can check if the error is `Temporrary()` or not.
See this snippet as an example: https://play.golang.org/p/Ffyg61iDpB I recommend https://dave.cheney.net/2016/04/27/dont-just-check-errors-handle-them-gracefully and.or the GopherCon talk https://www.youtube.com/watch?v=lsBF58Q-DnY by Dave Cheney for a more in-depth presentation of this idea. On Friday, November 25, 2016 at 12:00:06 PM UTC-5, mb.dha...@gmail.com wrote: > > This is a question about the net/http API, Googling was not very helpful. > > _, err := http.Get("https://random_non_existing_domain.com";) > > > Following code will obviously fail, but how can I check if it failed > because of DNS error not because a billion other things that might have > gone wrong? > > I tried this, (mostly as a shot in the dark) > > if e, ok := err.(net.Error); ok { > fmt.Println("dial error", e.Temporary()) > } > if e, ok := err.(*net.AddrError); ok { > fmt.Println("addr rror", e.Temporary()) > } > if e, ok := err.(*net.DNSError); ok { > fmt.Println(e) > > and it seems to print > > dial error false > > Is there any easy way to do what I'm trying to achieve? > > - > dbalan > @notmycommit > > > -- You received this message because you are subscribed to the Google Groups "golang-nuts" group. To unsubscribe from this group and stop receiving emails from it, send an email to golang-nuts+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
