Add messages serialization
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a9e54a7856
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@ -2,9 +2,10 @@
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var Put = require('bufferput');
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var Random = require('../crypto/random');
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var BufferReader = require('../encoding/bufferreader');
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var Block = require('../block');
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var BufferReader = require('../encoding/bufferreader');
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var BufferUtil = require('../util/buffer');
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var Random = require('../crypto/random');
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var CONNECTION_NONCE = Random.getPseudoRandomBuffer(8);
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var PROTOCOL_VERSION = 70000;
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@ -14,7 +15,10 @@ var MESSAGES = {
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'verack': VerAck,
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'inv': Inventory,
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'ping': Ping,
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'pong': Pong
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'pong': Pong,
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'addr': Addresses,
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'getaddr': GetAddresses,
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'reject': Reject
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}
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module.exports.buildMessage = function(command, payload) {
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@ -31,9 +35,10 @@ module.exports.buildMessage = function(command, payload) {
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// ====== VERSION MESSAGE ======
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function Version(subversion, nonce) {
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this.command = 'version';
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this.version = PROTOCOL_VERSION;
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this.subversion = subversion || '/BitcoinX:0.1/';
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this.nonce = nonce || CONNECTION_NONCE;
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}
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};
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Version.fromBuffer = function(payload) {
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var message = new Version();
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@ -49,11 +54,11 @@ Version.fromBuffer = function(payload) {
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message.start_height = parser.readUInt32LE();
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return message;
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}
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};
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Version.prototype.serialize = function() {
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var put = new Put();
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put.word32le(PROTOCOL_VERSION); // version
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put.word32le(this.version); // version
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put.word64le(1); // services
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put.word64le(Math.round(new Date().getTime() / 1000)); // timestamp
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put.pad(26); // addr_me
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@ -64,11 +69,11 @@ Version.prototype.serialize = function() {
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put.word32le(0);
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return put.buffer();
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}
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};
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module.exports.Version = Version;
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// ====== INV MESSAGE ======
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// ====== INV/GETDATA MESSAGE ======
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function Inventory(inventory) {
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this.command = 'inv';
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this.inventory = inventory || [];
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@ -87,7 +92,7 @@ Inventory.fromBuffer = function(payload) {
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}
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return message;
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}
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};
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Inventory.prototype.serialize = function() {
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var put = new Put();
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@ -99,8 +104,15 @@ Inventory.prototype.serialize = function() {
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});
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return put.buffer();
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};
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function GetData(inventory) {
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this.command = 'getdata';
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this.inventory = inventory || [];
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}
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GetData.fromBuffer = Inventory.fromBuffer;
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GetData.prototype.serialize = Inventory.prototype.serialize;
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// ====== PING/PONG MESSAGE ======
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function Ping(nonce) {
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@ -111,11 +123,11 @@ function Ping(nonce) {
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Ping.fromBuffer = function(payload) {
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var nonce = new BufferReader(payload).read(8);
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return new Ping(nonce);
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}
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};
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Ping.prototype.serialize = function() {
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return this.nonce;
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}
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};
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function Pong(nonce) {
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this.command = 'pong';
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@ -126,57 +138,202 @@ Pong.fromBuffer = Ping.fromBuffer;
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Pong.prototype.serialize = Ping.prototype.serialize;
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// ====== VARIOUS MESSAGE ======
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function GetAddr() {};
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function VerAck() {};
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VerAck.fromBuffer = function() {
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return new VerAck();
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// ====== ADDR MESSAGE ======
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function Addresses(nonce) {
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this.command = 'addr';
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this.addresses = [];
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}
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function Reject() {};
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Address.fromBuffer = function(payload) {
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var message = new Address();
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function Ping(payload) {
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var parser = new BufferReader(payload);
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var addrCount = Math.min(parser.readVarintNum(), 1000);
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this.nonce = parser.read(8);
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};
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// ====== PING MESSAGE ======
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function Address(payload) {
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var parser = new BufferReader(payload);
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var addrCount = parser.readVarintNum();
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addrCount = Math.min(addrCount, 1000);
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this.addresses = [];
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for (i = 0; i < addrCount; i++) {
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message.addresses = [];
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for (var i = 0; i < addrCount; i++) {
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// TODO: Time actually depends on the version of the other peer (>=31402)
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this.addresses.push({
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message.addresses.push({
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time: parser.readUInt32LE(),
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services: parser.readUInt64LEBN(),
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ip: parser.read(16), // TODO: Parse IP Address
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ip: parser.read(16),
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port: parser.readUInt16BE()
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});
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}
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return message;
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};
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function GetHeaders(payload) {
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var parser = new BufferReader(payload);
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Address.prototype.serialize = function() {
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return BufferUtil.EMPTY_BUFFER; // TODO
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};
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this.version = parser.readUInt32LE();
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var startCount = parser.readVarintNum();
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startCount = Math.min(startCount, 500);
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this.starts = [];
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for (i = 0; i < startCount; i++) {
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this.starts.push(parser.read(32));
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}
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this.stop = parser.read(32);
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// ====== GETADDR MESSAGE ======
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function GetAddresses() {
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this.command = 'getaddr';
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}
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GetAddresses.fromBuffer = function() {
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return new GetAddresses();
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};
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GetAddresses.prototype.serialize = function() {
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return BufferUtil.EMPTY_BUFFER;
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};
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// ====== VERACK MESSAGE ======
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function VerAck() {
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this.command = 'verack';
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}
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VerAck.fromBuffer = function() {
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return new VerAck();
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};
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VerAck.prototype.serialize = function() {
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return BufferUtil.EMPTY_BUFFER;
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};
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// ====== REJECT MESSAGE ======
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// TODO: Parse REJECT message
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function Reject() {
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this.command = 'reject';
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}
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Reject.fromBuffer = function() {
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return new Reject();
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};
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Reject.prototype.serialize = function() {
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return BufferUtil.EMPTY_BUFFER;
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};
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// ====== ALERT MESSAGE ======
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function Alert(payload) {
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this.command = 'reject';
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}
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Alert.fromBuffer = function() {
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var message = new Alert();
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var parser = new BufferReader(payload);
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message.payload = parser.readVarintBuf(); // TODO: Use current format
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message.signature = parser.readVarintBuf();
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return message;
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};
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Alert.prototype.serialize = function() {
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return BufferUtil.EMPTY_BUFFER; // TODO: Serialize
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};
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// ====== HEADERS MESSAGE ======
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function Headers(blockheaders) {
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this.command = 'headers';
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this.headers = blockheaders || [];
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}
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Headers.fromBuffer = function() {
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var message = new Headers();
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var parser = new BufferReader(payload);
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var count = parser.readVarintNum();
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message.headers = [];
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for (i = 0; i < count; i++) {
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var header = Block().fromBufferReader(parser);
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message.headers.push(header);
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}
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return message;
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};
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Headers.prototype.serialize = function() {
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return BufferUtil.EMPTY_BUFFER; // TODO: Serialize
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};
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// ====== BLOCK MESSAGE ======
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function Block(block) {
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this.command = 'block';
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this.block = block;
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}
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Block.fromBuffer = function() {
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var parser = new BufferReader(payload);
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var block = Block().fromBufferReader(parser);
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return new Block(block);
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};
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Block.prototype.serialize = function() {
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return BufferUtil.EMPTY_BUFFER; // TODO: Serialize
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};
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// ====== TX MESSAGE ======
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function Transaction(transaction) {
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this.command = 'tx';
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this.transaction = transaction;
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}
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Transaction.fromBuffer = function() {
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var parser = new BufferReader(payload);
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var transaction = Transaction().fromBufferReader(parser);
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return new Transaction(transaction);
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};
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Transaction.prototype.serialize = function() {
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return BufferUtil.EMPTY_BUFFER; // TODO: Serialize
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};
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// ====== GETBLOCKS/GETHEADERS MESSAGE ======
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function GetBlocks(starts, stop) {
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this.command = 'getblocks';
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this.version = PROTOCOL_VERSION;
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this.starts = starts || [];
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this.stop = stop || BufferUtil.NULL_HASH;
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}
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GetBlocks.fromBuffer = function() {
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var message = new GetBlocks();
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var parser = new BufferReader(payload);
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message.version = parser.readUInt32LE();
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var startCount = Math.min(parser.readVarintNum(), 500);
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message.starts = [];
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for (var i = 0; i < startCount; i++) {
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message.starts.push(parser.read(32));
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}
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message.stop = parser.read(32);
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};
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GetBlocks.prototype.serialize = function() {
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var put = new Put();
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put.word32le(this.version);
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put.varint(this.starts.length);
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for (var i = 0; i < starts.length; i++) {
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if (this.starts[i].length != 32) {
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throw new Error('Invalid hash length');
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}
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put.put(this.starts[i]);
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}
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if (this.stop.length != 32) {
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throw new Error('Invalid hash length');
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}
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put.put(this.stop);
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return put.buffer();
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};
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function GetHeaders(starts, stop) {
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this.command = 'getheaders';
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this.version = PROTOCOL_VERSION;
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this.starts = starts || [];
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this.stop = stop || BufferUtil.NULL_HASH;
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}
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GetHeaders.fromBuffer = GetBlocks.fromBuffer;
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GetHeaders.prototype.serialize = GetBlocks.prototype.serialize;
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@ -22,8 +22,6 @@ function equals(a, b) {
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module.exports = {
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NULL_HASH: buffertools.fill(new Buffer(32), 0),
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EMPTY_BUFFER: new Buffer(0),
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ZERO_VALUE: buffertools.fill(new Buffer(8), 0),
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INT64_MAX: new Buffer('ffffffffffffffff', 'hex'),
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/**
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* Returns true if the given argument is an instance of a buffer. Tests for
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