37c5e121c4
This fixes a regression introduced by 24c4bc0dd4. It could occasionally cause the tests to fail when run on a machine with an IPv6 localhost interface. As a fix I added a wrapper for the new Go 1.15 `LookupIP()` method, and created a partially-functional backport for Go 1.14. This should be easy to delete in the future.
Signed-off-by: Matt Moyer <moyerm@vmware.com>
29 lines
600 B
Go
29 lines
600 B
Go
// Copyright 2020 the Pinniped contributors. All Rights Reserved.
|
|
// SPDX-License-Identifier: Apache-2.0
|
|
|
|
// +build go1.14
|
|
|
|
package library
|
|
|
|
import (
|
|
"context"
|
|
"net"
|
|
)
|
|
|
|
// LookupIP looks up the IP address of the provided hostname, preferring IPv4.
|
|
func LookupIP(ctx context.Context, hostname string) ([]net.IP, error) {
|
|
ips, err := net.DefaultResolver.LookupIPAddr(ctx, hostname)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
// Filter out to only IPv4 addresses
|
|
var results []net.IP
|
|
for _, ip := range ips {
|
|
if ip.IP.To4() != nil {
|
|
results = append(results, ip.IP)
|
|
}
|
|
}
|
|
return results, nil
|
|
}
|