@node-lightning/wire/dist/messages/QueryChannelRangeMessage.js

Lightning Network Wire Protocol

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.QueryChannelRangeMessage = void 0;
const bufio_1 = require("@node-lightning/bufio");
const core_1 = require("@node-lightning/core");
const QueryChannelRangeFlags_1 = require("../flags/QueryChannelRangeFlags");
const MessageType_1 = require("../MessageType");
const readTlvs_1 = require("../serialize/readTlvs");
class QueryChannelRangeMessage {
    constructor() {
        /**
         * Type 263
         */
        this.type = MessageType_1.MessageType.QueryChannelRange;
    }
    static deserialize(payload) {
        const instance = new QueryChannelRangeMessage();
        const reader = new bufio_1.BufferReader(payload);
        reader.readUInt16BE(); // read type bytes
        instance.chainHash = reader.readBytes(32);
        instance.firstBlocknum = reader.readUInt32BE();
        instance.numberOfBlocks = reader.readUInt32BE();
        // Parse any TLVs that might exist
        readTlvs_1.readTlvs(reader, (type, valueReader) => {
            switch (type) {
                case BigInt(1): {
                    const options = valueReader.readBigSize();
                    const bitfield = new core_1.BitField(options);
                    instance.timestamps = bitfield.isSet(QueryChannelRangeFlags_1.QueryChannelRangeFlags.timestamps);
                    instance.checksums = bitfield.isSet(QueryChannelRangeFlags_1.QueryChannelRangeFlags.checksums);
                    return true;
                }
                default:
                    return false;
            }
        });
        return instance;
    }
    serialize() {
        const writer = new bufio_1.BufferWriter();
        writer.writeUInt16BE(MessageType_1.MessageType.QueryChannelRange);
        writer.writeBytes(this.chainHash);
        writer.writeUInt32BE(this.firstBlocknum);
        writer.writeUInt32BE(this.numberOfBlocks);
        // write the options TLV
        if (this.timestamps || this.checksums) {
            const bitfield = new core_1.BitField();
            if (this.timestamps)
                bitfield.set(QueryChannelRangeFlags_1.QueryChannelRangeFlags.timestamps);
            if (this.checksums)
                bitfield.set(QueryChannelRangeFlags_1.QueryChannelRangeFlags.checksums);
            writer.writeBigSize(1);
            writer.writeBigSize(bufio_1.BufferReader.bigSizeBytes(bitfield.value));
            writer.writeBigSize(bitfield.value);
        }
        return writer.toBuffer();
    }
}
exports.QueryChannelRangeMessage = QueryChannelRangeMessage;
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