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https://github.com/lightningnetwork/lnd.git
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b8ff9fbef3
In this commit, the lnwire.NodeAnnouncement2 type is defined. This will be used to represent the `node_announcement_2` message used in the Gossip 2 (1.75) protocol.
120 lines
3.8 KiB
Go
120 lines
3.8 KiB
Go
package lnwire
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import (
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"bytes"
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"testing"
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"github.com/lightningnetwork/lnd/tlv"
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"github.com/stretchr/testify/require"
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)
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// TestNodeAnn2EncodeDecode tests the encoding and decoding of the
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// NodeAnnouncement2 message using hardcoded byte slices.
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func TestNodeAnn2EncodeDecode(t *testing.T) {
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t.Parallel()
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// We'll create a raw byte stream that represents a valid
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// NodeAnnouncement2 message with various known and unknown fields in
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// the signed TLV ranges along with the signature in the unsigned range.
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rawBytes := []byte{
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// Features record.
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0x00, // type.
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0x02, // length.
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0x1, 0x2, // value.
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// Color record (optional).
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0x01, // type.
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0x03, // length.
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0xff, 0x00, 0x80, // value: RGB(255, 0, 128).
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// BlockHeight record.
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0x02, // type.
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0x04, // length.
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0x00, 0x01, 0x86, 0xa0, // value: 100000.
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// Alias record (optional).
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0x03, // type.
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0x20, // length (32).
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0x4c, 0x69, 0x67, 0x68, 0x74, 0x6e, 0x69, 0x6e,
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0x67, 0x20, 0x4e, 0x6f, 0x64, 0x65, 0x20, 0x54,
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0x65, 0x73, 0x74, 0x20, 0x41, 0x6c, 0x69, 0x61,
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0x73, 0x20, 0x4e, 0x61, 0x6d, 0x65, 0x21, 0x00, // value.
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// NodeID record.
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0x04, // type.
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0x21, // length.
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0x02, 0x28, 0xf2, 0xaf, 0xa, 0xbe, 0x32, 0x24, 0x3, 0x48, 0xf,
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0xb3, 0xee, 0x17, 0x2f, 0x7f, 0x16, 0x1, 0xe6, 0x7d, 0x1d, 0xa6,
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0xca, 0xd4, 0xb, 0x54, 0xc4, 0x46, 0x8d, 0x48, 0x23, 0x6c, 0x39,
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// IPV4Addrs record (optional).
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0x05, // type.
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0x0c, // length (12 bytes).
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0x0a, 0x00, 0x00, 0x01, 0x23, 0x28, // 10.0.0.1:9000
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0x0a, 0x00, 0x00, 0x01, 0x1f, 0x90, // 10.0.0.1:8080
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// IPV6Addrs record (optional).
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0x07, // type.
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0x12, // length.
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0x20, 0x01, 0x0d, 0xb8, 0x00, 0x00, 0x00, 0x00, // IPv6 address
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, // 2001:db8::1
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0x1f, 0x40, // port 8000
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// TorV3Addrs record (optional).
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0x09, // type.
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0x25, // length (37 bytes = 1 address).
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// value: 35-byte tor v3 address + 2-byte port.
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0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08,
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0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, 0x10,
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0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18,
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0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, 0x20,
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0x21, 0x22, 0x23,
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0x23, 0x28, // port 9000.
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// DNSHostName record (optional).
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0x0b, // type (11).
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0x17, // length (23).
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0x6c, 0x69, 0x67, 0x68, 0x74, 0x6e, 0x69, 0x6e,
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0x67, 0x2e, 0x65, 0x78, 0x61, 0x6d, 0x70, 0x6c, // value.
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0x65, 0x2e, 0x63, 0x6f, 0x6d,
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0x23, 0x28, // port 9000.
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// Signature.
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0xa0, // type.
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0x40, // length.
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0x0, 0x1, 0x2, 0x3, 0x4, 0x5, 0x6, 0x7, 0x8, 0x9, 0xa, 0xb,
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0xc, 0xd, 0xe, 0xf, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16,
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0x17, 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, 0x20,
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0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, 0x28, 0x29, 0x2a,
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0x2b, 0x2c, 0x2d, 0x2e, 0x2f, 0x30, 0x31, 0x32, 0x33, 0x34,
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0x35, 0x36, 0x37, 0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e,
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0x3f, // value.
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}
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secondSignedRangeType := new(bytes.Buffer)
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var buf [8]byte
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err := tlv.WriteVarInt(
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secondSignedRangeType, pureTLVSignedSecondRangeStart+1, &buf,
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)
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require.NoError(t, err)
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rawBytes = append(rawBytes, secondSignedRangeType.Bytes()...) // type.
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rawBytes = append(rawBytes, []byte{
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0x02, // length.
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0x79, 0x79, // value.
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}...)
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// Now, create a new empty message and decode the raw bytes into it.
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msg := &NodeAnnouncement2{}
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r := bytes.NewReader(rawBytes)
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err = msg.Decode(r, 0)
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require.NoError(t, err)
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// Next, encode the message back into a new byte buffer.
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var b bytes.Buffer
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err = msg.Encode(&b, 0)
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require.NoError(t, err)
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// The re-encoded bytes should be exactly the same as the original raw
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// bytes.
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require.Equal(t, rawBytes, b.Bytes())
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}
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