74 lines
2.2 KiB
Go
74 lines
2.2 KiB
Go
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package integration_test
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import (
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"io/ioutil"
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"net"
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"os"
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"os/exec"
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"router7/internal/radvd"
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"testing"
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)
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func TestRouterAdvertisement(t *testing.T) {
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const ns = "ns0" // name of the network namespace to use for this test
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if err := exec.Command("ip", "netns", "add", ns).Run(); err != nil {
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t.Fatalf("ip netns add %s: %v", ns, err)
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}
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defer exec.Command("ip", "netns", "delete", ns).Run()
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nsSetup := []*exec.Cmd{
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exec.Command("ip", "link", "add", "veth0a", "type", "veth", "peer", "name", "veth0b", "netns", ns),
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// Disable Duplicate Address Detection: until DAD completes, the link-local
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// address remains in state “tentative”, resulting in any attempts to
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// bind(2) to the address to fail with -EADDRNOTAVAIL.
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exec.Command("/bin/sh", "-c", "echo 0 > /proc/sys/net/ipv6/conf/veth0a/accept_dad"),
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exec.Command("ip", "netns", "exec", ns, "/bin/sh", "-c", "echo 0 > /proc/sys/net/ipv6/conf/veth0b/accept_dad"),
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exec.Command("ip", "link", "set", "veth0a", "up"),
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exec.Command("ip", "netns", "exec", ns, "ip", "addr", "add", "192.168.23.1/24", "dev", "veth0b"),
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exec.Command("ip", "netns", "exec", ns, "ip", "link", "set", "veth0b", "up"),
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exec.Command("ip", "netns", "exec", ns, "ip", "link", "set", "veth0b"),
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}
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for _, cmd := range nsSetup {
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if err := cmd.Run(); err != nil {
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t.Fatalf("%v: %v", cmd.Args, err)
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}
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}
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ready, err := ioutil.TempFile("", "router7")
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if err != nil {
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t.Fatal(err)
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}
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ready.Close() // dnsmasq will re-create the file anyway
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defer os.Remove(ready.Name()) // dnsmasq does not clean up its pid file
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srv, err := radvd.NewServer()
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if err != nil {
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t.Fatal(err)
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}
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srv.SetPrefixes([]net.IPNet{
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net.IPNet{IP: net.ParseIP("2a02:168:4a00::"), Mask: net.CIDRMask(64, 128)},
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})
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go func() {
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if err := srv.ListenAndServe("veth0a"); err != nil {
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t.Fatal(err)
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}
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}()
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//time.Sleep(5 * time.Second)
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rdisc6 := exec.Command("ip", "netns", "exec", ns, "rdisc6",
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"--single", // exit after first router advertisement
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"--retry", "1", // retry only once
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"--wait", "1000", // wait 1s
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"veth0b")
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rdisc6.Stderr = os.Stderr
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b, err := rdisc6.Output()
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if err != nil {
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t.Fatal(err)
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}
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t.Logf("b = %s", string(b))
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}
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