| 70 | } |
| 71 | |
| 72 | func TestTTL(t *testing.T) { |
| 73 | defer goleak.VerifyNone(t) |
| 74 | vh := &VirtualHarness{} |
| 75 | vh.UntrackedRouting = true |
| 76 | a1 := "192.168.1.1:1234" |
| 77 | vh.NewNode("a", "10.0.0.1/32") |
| 78 | b1 := "192.168.1.2:1234" |
| 79 | vh.NewNode("b", "10.0.0.2/32") |
| 80 | c1 := "192.168.1.3:1234" |
| 81 | vh.NewNode("c", "10.0.0.3/32") |
| 82 | vh.Central.Graph = []string{ |
| 83 | "a, b", |
| 84 | "b, c", |
| 85 | } |
| 86 | vh.Endpoints = map[string]state.NodeId{ |
| 87 | a1: "a", |
| 88 | b1: "b", |
| 89 | c1: "c", |
| 90 | } |
| 91 | vh.AddLink(a1, b1) |
| 92 | vh.AddLink(b1, a1) |
| 93 | vh.AddLink(b1, c1) |
| 94 | vh.AddLink(c1, b1) |
| 95 | |
| 96 | errs := vh.Start() |
| 97 | |
| 98 | vn := vh.Net |
| 99 | cc := make(chan bool, 100) |
| 100 | |
| 101 | vn.SelfHandler = func(node state.NodeId, src, dst netip.Addr, data []byte) bool { |
| 102 | if src.String() == "10.0.0.1" && dst.String() == "10.0.0.3" && data[0] == 222 { |
| 103 | if node == "c" { |
| 104 | panic("c is not supposed to receive this packet") |
| 105 | } |
| 106 | cc <- true |
| 107 | } |
| 108 | return true |
| 109 | } |
| 110 | |
| 111 | go func() { |
| 112 | for { |
| 113 | select { |
| 114 | case <-vh.Context.Done(): |
| 115 | return |
| 116 | case <-time.After(100 * time.Millisecond): |
| 117 | vn.Send("a", "10.0.0.1", "10.0.0.3", []byte{222}, 1) |
| 118 | } |
| 119 | } |
| 120 | }() |
| 121 | |
| 122 | select { |
| 123 | case <-cc: |
| 124 | t.Log("Got ping!") |
| 125 | case <-time.After(10 * time.Second): |
| 126 | t.Error("Timed out waiting for ping") |
| 127 | case err := <-errs: |
| 128 | t.Error(err) |
| 129 | } |