I suspect your (possibly wrapped) error will be of type
x509.UnknownAuthorityError, so you should be able to check for it with
errors.As:
var uaerr x509.UnknownAuthorityError
if errors.As(err, &uaerr) {
// handle as an unknown authority error
}
On Tue, Jun 2, 2020 at 8:22 AM Kevin Chadwick <m8il1i...@gmail.com> wrote:
> I want my client application to behave differently depending upon whether
> the
> server is down or it is a "x509: certificate signed by unknown authority"
> condition.
>
> It seems there isn't an errors.Is (btw the dot syntax makes it difficult to
> google search!)
>
> I intend to just string match the returned error. However, as it isn't a
> pkg
> variable (had to grep). Does the string fall outside the compatibility
> promise?
>
> If so. Is there a better way or should I just create a test to run on every
> stdlib upgrade?
>
> Thanks
>
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