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| 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 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 | 1x 1x 1x 1x 1x 6x 6x 6x 6x 6x 6x 6x 6x 6x 6x 6x 6x 6x 6x 6x 8x 8x 7x 1x 6x 6x 6x 6x 6x 6x 6x 8x 8x 8x 8x 8x 8x 8x 8x 1x 2x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 2x 2x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x | import { Tx } from '@node-dlc/bitcoin';
import { BufferReader, BufferWriter, StreamReader } from '@node-dlc/bufio';
import { MessageType } from '../MessageType';
import { IDlcMessage } from './DlcMessage';
/**
* DlcTransactions message contains information about state of DLC
* contract such as fundtx and closetx
*/
export class DlcTransactions implements IDlcMessage {
public static type = MessageType.DlcTransactions;
/**
* Deserializes a dlc_transactions message
* @param buf
*/
public static deserialize(buf: Buffer, parseCets = true): DlcTransactions {
const instance = new DlcTransactions();
const reader = new BufferReader(buf);
reader.readUInt16BE(); // read type
instance.contractId = reader.readBytes(32);
const fundTxLen = reader.readUInt16BE();
instance.fundTx = Tx.decode(
StreamReader.fromBuffer(reader.readBytes(fundTxLen)),
);
instance.fundTxVout = reader.readUInt32BE();
const fundHash = reader.readBytes(32);
const fundHeight = reader.readUInt32BE();
instance.fundEpoch = {
hash: fundHash,
height: fundHeight,
};
instance.fundBroadcastHeight = reader.readUInt32BE();
const refundTxLen = reader.readUInt16BE();
instance.refundTx = Tx.decode(
StreamReader.fromBuffer(reader.readBytes(refundTxLen)),
);
const numCets = reader.readBigSize(); // num_cets
for (let i = 0; i < numCets; i++) {
const cetLen = reader.readUInt16BE();
if (parseCets || i === 0) {
instance.cets.push(
Tx.decode(StreamReader.fromBuffer(reader.readBytes(cetLen))),
);
} else {
reader.readBytes(cetLen);
}
}
const closeHash = reader.readBytes(32);
const closeHeight = reader.readUInt32BE();
instance.closeEpoch = {
hash: closeHash,
height: closeHeight,
};
instance.closeTxHash = reader.readBytes(32);
instance.closeType = reader.readUInt8();
instance.closeBroadcastHeight = reader.readUInt32BE();
return instance;
}
/**
* The type for dlc_transactions message. dlc_transactions = 61230
*/
public type = DlcTransactions.type;
public contractId: Buffer;
public fundTx: Tx;
public fundTxVout: number;
public fundEpoch: BlockEpoch = {
hash: Buffer.alloc(32),
height: 0,
};
public fundBroadcastHeight = 0;
public refundTx: Tx;
public cets: Tx[] = [];
public closeEpoch: BlockEpoch = {
hash: Buffer.alloc(32),
height: 0,
};
public closeTxHash: Buffer = Buffer.alloc(32);
public closeType: CloseType = 0;
public closeBroadcastHeight = 0;
/**
* Converts dlc_transactions to JSON
*/
public toJSON(): IDlcTransactionsJSON {
return {
type: this.type,
contractId: this.contractId.toString('hex'),
fundTx: this.fundTx.serialize().toString('hex'),
fundTxVout: this.fundTxVout,
fundEpoch: {
hash: this.fundEpoch.hash.toString('hex'),
height: this.fundEpoch.height,
},
fundBroadcastHeight: this.fundBroadcastHeight,
refundTx: this.refundTx.serialize().toString('hex'),
cets: this.cets.map((cet) => cet.serialize().toString('hex')),
closeEpoch: {
hash: this.closeEpoch.hash.toString('hex'),
height: this.closeEpoch.height,
},
closeTxHash: this.closeTxHash.toString('hex'),
closeType: closeTypeToStr(this.closeType),
closeBroadcastHeight: this.closeBroadcastHeight,
};
}
/**
* Serializes the dlc_transactions message into a Buffer
*/
public serialize(): Buffer {
const writer = new BufferWriter();
writer.writeUInt16BE(this.type);
writer.writeBytes(this.contractId);
writer.writeUInt16BE(this.fundTx.serialize().length);
writer.writeBytes(this.fundTx.serialize());
writer.writeUInt32BE(this.fundTxVout);
writer.writeBytes(this.fundEpoch.hash);
writer.writeUInt32BE(this.fundEpoch.height);
writer.writeUInt32BE(this.fundBroadcastHeight);
writer.writeUInt16BE(this.refundTx.serialize().length);
writer.writeBytes(this.refundTx.serialize());
writer.writeBigSize(this.cets.length);
for (const cet of this.cets) {
writer.writeUInt16BE(cet.serialize().length);
writer.writeBytes(cet.serialize());
}
writer.writeBytes(this.closeEpoch.hash);
writer.writeUInt32BE(this.closeEpoch.height);
writer.writeBytes(this.closeTxHash);
writer.writeUInt8(this.closeType);
writer.writeUInt32BE(this.closeBroadcastHeight);
return writer.toBuffer();
}
}
const closeTypeToStr = (closeType: CloseType): string => {
switch (closeType) {
case CloseType.ExecuteClose:
return 'ExecuteClose';
case CloseType.RefundClose:
return 'RefundClose';
case CloseType.CooperativeClose:
return 'CooperativeClose';
default:
return 'NotClosed';
}
};
export interface IDlcTransactionsJSON {
type: number;
contractId: string;
fundTx: string;
fundTxVout: number;
fundEpoch: IBlockEpochJSON;
fundBroadcastHeight: number;
refundTx: string;
cets: string[];
closeEpoch: IBlockEpochJSON;
closeTxHash: string;
closeType: string;
closeBroadcastHeight: number;
}
export interface IBlockEpochJSON {
hash: string;
height: number;
}
export interface BlockEpoch {
hash: Buffer;
height: number;
}
export enum CloseType {
NotClosed = 0,
ExecuteClose = 1,
RefundClose = 2,
CooperativeClose = 3,
}
// Backward compatibility aliases
export const DlcTransactionsV0 = DlcTransactions;
export type IDlcTransactionsV0JSON = IDlcTransactionsJSON;
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