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tstest/natlab: refactor PacketHandler into a larger interface.

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The new interface lets implementors more precisely distinguish
local traffic from forwarded traffic, and applies different
forwarding logic within Machines for each type. This allows
Machines to be packet forwarders, which didn't quite work
with the implementation of Inject.

Signed-off-by: David Anderson <danderson@tailscale.com>
This commit is contained in:
David Anderson
2020-07-14 21:01:52 +00:00
committed by Dave Anderson
parent 723b9eecb0
commit 45578b47f3
5 changed files with 331 additions and 221 deletions
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10
wgengine/magicsock/magicsock_test.go
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@@ -371,15 +371,13 @@ func TestTwoDevicePing(t *testing.T) {
t.Run("facing firewalls", func(t *testing.T) {
mstun := &natlab.Machine{Name: "stun"}
f1 := &natlab.Firewall{}
f2 := &natlab.Firewall{}
m1 := &natlab.Machine{
Name: "m1",
HandlePacket: f1.HandlePacket,
Name: "m1",
PacketHandler: &natlab.Firewall{},
}
m2 := &natlab.Machine{
Name: "m2",
HandlePacket: f2.HandlePacket,
Name: "m2",
PacketHandler: &natlab.Firewall{},
}
inet := natlab.NewInternet()
sif := mstun.Attach("eth0", inet)