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Reduce VPN control packet latency

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This commit is contained in:
Mikhail
2026-05-15 18:19:55 +03:00
parent ceda460d09
commit 52dfce316d
7 changed files with 194 additions and 15 deletions
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agents/rap-node-agent/internal/vpnruntime/fabric_transport_test.go
+45
View File
@@ -241,6 +241,51 @@ func TestFabricPacketInboxDropsEmptyPackets(t *testing.T) {
}
}
func TestFabricPacketInboxPrioritizesGatewayTCPControlPackets(t *testing.T) {
inbox := NewFabricPacketInbox(4)
normal := testIPv4TCPPacket([4]byte{185, 16, 148, 89}, [4]byte{10, 77, 0, 2}, 443, 56000)
priority := testIPv4TCPPacket([4]byte{192, 168, 200, 95}, [4]byte{10, 77, 0, 2}, 3389, 57032)
priority[33] = 0x12
if err := inbox.DeliverLocalPacketBatch("vpn-1", FabricDirectionGatewayToClient, [][]byte{normal}); err != nil {
t.Fatalf("deliver normal gateway packet: %v", err)
}
if err := inbox.DeliverLocalPacketBatch("vpn-1", FabricDirectionGatewayToClient, [][]byte{priority}); err != nil {
t.Fatalf("deliver priority gateway packet: %v", err)
}
packets, err := inbox.Receive(context.Background(), "vpn-1", FabricDirectionGatewayToClient, time.Second)
if err != nil {
t.Fatalf("receive gateway packet: %v", err)
}
if len(packets) != 1 || string(packets[0]) != string(priority) {
t.Fatalf("first packets = %#v, want priority tcp control packet", packets)
}
}
func TestFabricPacketInboxWaitsBrieflyForGatewayTCPControlPackets(t *testing.T) {
inbox := NewFabricPacketInbox(4)
normal := testIPv4TCPPacket([4]byte{185, 16, 148, 89}, [4]byte{10, 77, 0, 2}, 443, 56000)
priority := testIPv4TCPPacket([4]byte{192, 168, 200, 95}, [4]byte{10, 77, 0, 2}, 3389, 57032)
priority[33] = 0x12
if err := inbox.DeliverLocalPacketBatch("vpn-1", FabricDirectionGatewayToClient, [][]byte{normal}); err != nil {
t.Fatalf("deliver normal gateway packet: %v", err)
}
go func() {
time.Sleep(time.Millisecond)
_ = inbox.DeliverLocalPacketBatch("vpn-1", FabricDirectionGatewayToClient, [][]byte{priority})
}()
packets, err := inbox.Receive(context.Background(), "vpn-1", FabricDirectionGatewayToClient, time.Second)
if err != nil {
t.Fatalf("receive gateway packet: %v", err)
}
if len(packets) != 1 || string(packets[0]) != string(priority) {
t.Fatalf("first packets = %#v, want delayed priority tcp control packet", packets)
}
}
func TestLocalPacketTransportUsesFabricInboxDirections(t *testing.T) {
inbox := NewFabricPacketInbox(4)
transport := &LocalPacketTransport{Inbox: inbox, VPNConnectionID: "vpn-1"}