109 lines
2.7 KiB
Go
109 lines
2.7 KiB
Go
/*
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Copyright 2016 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package server
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import (
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"net"
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"testing"
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netutils "k8s.io/utils/net"
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)
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func TestLoopbackHostPortIPv4(t *testing.T) {
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_, ipv6only, err := isIPv6LoopbackSupported()
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if err != nil {
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t.Fatalf("fail to enumerate network interface, %s", err)
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}
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if ipv6only {
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t.Fatalf("no ipv4 loopback interface")
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}
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host, port, err := LoopbackHostPort("1.2.3.4:443")
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if err != nil {
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t.Fatalf("unexpected error: %v", err)
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}
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if host != "1.2.3.4" {
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t.Fatalf("expected 1.2.3.4 as host, got %q", host)
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}
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if port != "443" {
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t.Fatalf("expected 443 as port, got %q", port)
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}
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host, port, err = LoopbackHostPort("0.0.0.0:443")
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if err != nil {
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t.Fatalf("unexpected error: %v", err)
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}
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if ip := netutils.ParseIPSloppy(host); ip == nil || !ip.IsLoopback() {
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t.Fatalf("expected host to be loopback, got %q", host)
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}
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if port != "443" {
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t.Fatalf("expected 443 as port, got %q", port)
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}
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}
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func TestLoopbackHostPortIPv6(t *testing.T) {
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ipv6, _, err := isIPv6LoopbackSupported()
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if err != nil {
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t.Fatalf("fail to enumerate network interface, %s", err)
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}
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if !ipv6 {
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t.Skip("no ipv6 loopback interface")
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}
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host, port, err := LoopbackHostPort("[ff06:0:0:0:0:0:0:c3]:443")
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if err != nil {
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t.Fatalf("unexpected error: %v", err)
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}
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if host != "ff06:0:0:0:0:0:0:c3" {
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t.Fatalf("expected ff06:0:0:0:0:0:0:c3 as host, got %q", host)
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}
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if port != "443" {
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t.Fatalf("expected 443 as port, got %q", port)
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}
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host, port, err = LoopbackHostPort("[::]:443")
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if err != nil {
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t.Fatalf("unexpected error: %v", err)
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}
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if ip := netutils.ParseIPSloppy(host); ip == nil || !ip.IsLoopback() || ip.To4() != nil {
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t.Fatalf("expected IPv6 host to be loopback, got %q", host)
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}
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if port != "443" {
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t.Fatalf("expected 443 as port, got %q", port)
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}
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}
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func isIPv6LoopbackSupported() (ipv6 bool, ipv6only bool, err error) {
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addrs, err := net.InterfaceAddrs()
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if err != nil {
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return false, false, err
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}
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ipv4 := false
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for _, address := range addrs {
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ipnet, ok := address.(*net.IPNet)
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if !ok || !ipnet.IP.IsLoopback() {
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continue
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}
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if netutils.IsIPv6(ipnet.IP) {
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ipv6 = true
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continue
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}
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ipv4 = true
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}
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ipv6only = ipv6 && !ipv4
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return ipv6, ipv6only, nil
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}
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