57 lines
1.5 KiB
Go
57 lines
1.5 KiB
Go
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package dnstt
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import (
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"encoding/binary"
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"net/netip"
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"testing"
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"time"
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)
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func TestProcessIPv6PacketRecordsResolverAddress(t *testing.T) {
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now := time.Unix(1000, 0)
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resolverIP := netip.MustParseAddr("2001:db8::53")
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serverIP := netip.MustParseAddr("2001:db8::1")
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c := NewCollector(
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[]string{"tunnel.example.com"},
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WithNow(func() time.Time { return now }),
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WithGeoResolver(fakeGeoResolver{
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labelNames: []string{"asn"},
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labels: map[netip.Addr]GeoLabels{
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resolverIP: {ASN: "13335"},
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},
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}),
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)
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ProcessPacket(ipv6UDPPacket(resolverIP, serverIP, 53000, 53, dnsQuery("MFRGGZDFMZTWQ2LK", "tunnel.example.com")), 53, c)
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series := c.Snapshot().Tunnels["tunnel.example.com"].Series
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if len(series) != 1 {
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t.Fatalf("series count = %d, want 1", len(series))
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}
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if series[0].ASN != "13335" {
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t.Fatalf("ASN = %q, want 13335", series[0].ASN)
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}
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if series[0].TotalQueries != 1 {
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t.Fatalf("queries = %d, want 1", series[0].TotalQueries)
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}
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}
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func ipv6UDPPacket(src, dst netip.Addr, srcPort, dstPort uint16, payload []byte) []byte {
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packet := make([]byte, 40+8+len(payload))
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packet[0] = 0x60
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binary.BigEndian.PutUint16(packet[4:6], uint16(8+len(payload)))
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packet[6] = 17
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packet[7] = 64
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srcBytes := src.As16()
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dstBytes := dst.As16()
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copy(packet[8:24], srcBytes[:])
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copy(packet[24:40], dstBytes[:])
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udp := packet[40:]
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binary.BigEndian.PutUint16(udp[0:2], srcPort)
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binary.BigEndian.PutUint16(udp[2:4], dstPort)
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binary.BigEndian.PutUint16(udp[4:6], uint16(8+len(payload)))
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copy(udp[8:], payload)
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return packet
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}
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