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allow for blank ip addresses #316

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merged 1 commit into from
Jun 4, 2021
Merged

allow for blank ip addresses #316

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3 changes: 3 additions & 0 deletions ip.go
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Original file line number Diff line number Diff line change
Expand Up @@ -16,6 +16,9 @@ func newIPValue(val net.IP, p *net.IP) *ipValue {

func (i *ipValue) String() string { return net.IP(*i).String() }
func (i *ipValue) Set(s string) error {
if s == "" {
return nil
}
ip := net.ParseIP(strings.TrimSpace(s))
if ip == nil {
return fmt.Errorf("failed to parse IP: %q", s)
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2 changes: 1 addition & 1 deletion ip_test.go
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Expand Up @@ -24,7 +24,7 @@ func TestIP(t *testing.T) {
{"1.2.3.4", true, "1.2.3.4"},
{"127.0.0.1", true, "127.0.0.1"},
{"255.255.255.255", true, "255.255.255.255"},
{"", false, ""},
{"", true, "0.0.0.0"},
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{"0", false, ""},
{"localhost", false, ""},
{"0.0.0", false, ""},
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