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Dns static lookerupper (#796)

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* Support lighthouse DNS names, and regularly resolve the name in a background goroutine to discover DNS updates.
This commit is contained in:
brad-defined 2023-05-09 11:22:08 -04:00 • committed by GitHub
parent d1f786419c
commit bd9cc01d62
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GPG key ID: 4AEE18F83AFDEB23
7 changed files with 324 additions and 48 deletions
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15
lighthouse_test.go
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@ -1,6 +1,7 @@
package nebula
import (
"context"
"fmt"
"net"
"testing"
@ -53,14 +54,14 @@ func Test_lhStaticMapping(t *testing.T) {
c := config.NewC(l)
c.Settings["lighthouse"] = map[interface{}]interface{}{"hosts": []interface{}{lh1}}
c.Settings["static_host_map"] = map[interface{}]interface{}{lh1: []interface{}{"1.1.1.1:4242"}}
_, err := NewLightHouseFromConfig(l, c, myVpnNet, nil, nil)
_, err := NewLightHouseFromConfig(context.Background(), l, c, myVpnNet, nil, nil)
assert.Nil(t, err)
lh2 := "10.128.0.3"
c = config.NewC(l)
c.Settings["lighthouse"] = map[interface{}]interface{}{"hosts": []interface{}{lh1, lh2}}
c.Settings["static_host_map"] = map[interface{}]interface{}{lh1: []interface{}{"100.1.1.1:4242"}}
_, err = NewLightHouseFromConfig(l, c, myVpnNet, nil, nil)
_, err = NewLightHouseFromConfig(context.Background(), l, c, myVpnNet, nil, nil)
assert.EqualError(t, err, "lighthouse 10.128.0.3 does not have a static_host_map entry")
}
@ -69,14 +70,14 @@ func BenchmarkLighthouseHandleRequest(b *testing.B) {
_, myVpnNet, _ := net.ParseCIDR("10.128.0.1/0")
c := config.NewC(l)
lh, err := NewLightHouseFromConfig(l, c, myVpnNet, nil, nil)
lh, err := NewLightHouseFromConfig(context.Background(), l, c, myVpnNet, nil, nil)
if !assert.NoError(b, err) {
b.Fatal()
}
hAddr := udp.NewAddrFromString("4.5.6.7:12345")
hAddr2 := udp.NewAddrFromString("4.5.6.7:12346")
lh.addrMap[3] = NewRemoteList()
lh.addrMap[3] = NewRemoteList(nil)
lh.addrMap[3].unlockedSetV4(
3,
3,
@ -89,7 +90,7 @@ func BenchmarkLighthouseHandleRequest(b *testing.B) {
rAddr := udp.NewAddrFromString("1.2.2.3:12345")
rAddr2 := udp.NewAddrFromString("1.2.2.3:12346")
lh.addrMap[2] = NewRemoteList()
lh.addrMap[2] = NewRemoteList(nil)
lh.addrMap[2].unlockedSetV4(
3,
3,
@ -162,7 +163,7 @@ func TestLighthouse_Memory(t *testing.T) {
c := config.NewC(l)
c.Settings["lighthouse"] = map[interface{}]interface{}{"am_lighthouse": true}
c.Settings["listen"] = map[interface{}]interface{}{"port": 4242}
lh, err := NewLightHouseFromConfig(l, c, &net.IPNet{IP: net.IP{10, 128, 0, 1}, Mask: net.IPMask{255, 255, 255, 0}}, nil, nil)
lh, err := NewLightHouseFromConfig(context.Background(), l, c, &net.IPNet{IP: net.IP{10, 128, 0, 1}, Mask: net.IPMask{255, 255, 255, 0}}, nil, nil)
assert.NoError(t, err)
lhh := lh.NewRequestHandler()
@ -238,7 +239,7 @@ func TestLighthouse_reload(t *testing.T) {
c := config.NewC(l)
c.Settings["lighthouse"] = map[interface{}]interface{}{"am_lighthouse": true}
c.Settings["listen"] = map[interface{}]interface{}{"port": 4242}
lh, err := NewLightHouseFromConfig(l, c, &net.IPNet{IP: net.IP{10, 128, 0, 1}, Mask: net.IPMask{255, 255, 255, 0}}, nil, nil)
lh, err := NewLightHouseFromConfig(context.Background(), l, c, &net.IPNet{IP: net.IP{10, 128, 0, 1}, Mask: net.IPMask{255, 255, 255, 0}}, nil, nil)
assert.NoError(t, err)
c.Settings["static_host_map"] = map[interface{}]interface{}{"10.128.0.2": []interface{}{"1.1.1.1:4242"}}