Press n or j to go to the next uncovered block, b, p or k for the previous block.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 | 1x 1x 1x 1x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 1x 1x 1x 1x 1x 1x | import { BufferReader, BufferWriter, StreamReader } from "@node-lightning/bufio"; import { Bits } from "./Bits"; import { BlockHeader } from "./BlockHeader"; import { HashValue } from "./HashValue"; import { Tx } from "./Tx"; /** * This class represents a Bitcoin block including fully constructed * transactions. It can be used to deserialize a raw transaction receive * from a peer or deserialized from HEX. * * This class extends the `BlockHeader` type since all properties on * a `BlockHeader` are part of a `Block`. */ export class Block extends BlockHeader { /** * Parses a Block with full transactions information by first * parsing the `BlockHeader` then the transactions. * @param buf */ public static fromBuffer(buf: Buffer): Block { const r = new BufferReader(buf); // parse the header const header = BlockHeader.fromBuffer(r.readBytes(BlockHeader.ByteSize)); // number of transactions const numTxs = Number(r.readVarUint()); // read txs as a stream const txsStream = StreamReader.fromBuffer(r.readBytes()); const txs: Tx[] = []; for (let i = 0; i < numTxs; i++) { txs.push(Tx.decode(txsStream)); } // return block return new Block( header.version, header.previousBlockHash, header.merkleRoot, header.timestamp, header.bits, header.nonce, txs, ); } /** * Complete list of transactions, in the order they weere included * in the `Block`. */ public txs: Tx[]; constructor( version: number, previousBlockHash: HashValue, merkleRoot: HashValue, timestamp: number, bits: Bits, nonce: number, txs: Tx[], ) { super(version, previousBlockHash, merkleRoot, timestamp, bits, nonce); this.txs = txs; } /** * Serializes the `Block` into a Buffer by first serializing the * `BlockHeader` followed by a `varint` that encodes the number of * transactions followed by a sequence of `Tx`. */ public toBuffer(): Buffer { const bw = new BufferWriter(); // serialize the header bw.writeBytes(super.toBuffer()); // serialize tx count bw.writeVarInt(this.txs.length); // serialize txs for (const tx of this.txs) { bw.writeBytes(tx.serialize()); } return bw.toBuffer(); } } |