Skip to content

Commit

Permalink
fix and improve SendTx example
Browse files Browse the repository at this point in the history
  • Loading branch information
@maraoz
maraoz committed Apr 17, 2014
1 parent 84ec7ba commit fc1dcbd
Show file tree
Hide file tree
Showing 2 changed files with 203 additions and 151 deletions.
227 changes: 123 additions & 104 deletions README.md
View file
Original file line number Diff line number Diff line change
Expand Up @@ -62,42 +62,43 @@ addrs.forEach(function(addr) {
For this example you need a running bitcoind instance with RPC enabled.

```js
var bitcore = require('bitcore');
var networks = bitcore.networks;
var Peer = bitcore.Peer;
var PeerManager = require('soop').load('../PeerManager', {
network: networks.testnet
});
var bitcore = require('../bitcore');
var Peer = bitcore.Peer;
var PeerManager = bitcore.PeerManager;

var handleBlock = function(info) {
console.log('** Block Received **');
console.log(info.message);
};
var handleBlock = function(info) {
console.log('** Block Received **');
console.log(info.message);
};

var handleTx = function(info) {
var tx = info.message.tx.getStandardizedObject();
console.log('** TX Received **');
console.log(tx);
};
var handleTx = function(info) {
var tx = info.message.tx.getStandardizedObject();

var handleInv = function(info) {
console.log('** Inv **');
console.log(info.message);
var invs = info.message.invs;
info.conn.sendGetData(invs);
};
console.log('** TX Received **');
console.log(tx);
};

var peerman = new PeerManager();
var handleInv = function(info) {
console.log('** Inv **');
console.log(info.message);

peerman.addPeer(new Peer('127.0.0.1', 18333));
var invs = info.message.invs;
info.conn.sendGetData(invs);
};

peerman.on('connection', function(conn) {
conn.on('inv', handleInv);
conn.on('block', handleBlock);
conn.on('tx', handleTx);
});
var peerman = new PeerManager({
network: 'testnet'
});

peerman.start();
peerman.addPeer(new Peer('127.0.0.1', 18333));

peerman.on('connection', function(conn) {
conn.on('inv', handleInv);
conn.on('block', handleBlock);
conn.on('tx', handleTx);
});

peerman.start();
```

PeerManager will emit the following events: 'version', 'verack', 'addr', 'getaddr', 'error' 'disconnect'; and will relay events like: 'tx', 'block', 'inv'. Please see [PeerManager.js](PeerManager.js), [Peer.js](Peer.js) and [Connection.js](Connection.js)
Expand Down Expand Up @@ -140,83 +141,101 @@ by the transaction size. Documentation on the parameters of `TransactionBuilder`
can be found on the source file.

```js
var bitcore = require('bitcore');
var networks = bitcore.networks;
var Peer = bitcore.Peer;
var TransactionBuilder = bitcore.TransactionBuilder;
var PeerManager = require('soop').load('../PeerManager', {
network: networks.testnet
});

// Unspent transactions can be found via the insight.bitcore.io or blockchain.info APIs
var unspent = [
{
"address": "n4g2TFaQo8UgedwpkYdcQFF6xE2Ei9Czvy",
"txid": "2ac165fa7a3a2b535d106a0041c7568d03b531e58aeccdd3199d7289ab12cfc1",
"scriptPubKey": "76a914fe021bac469a5c49915b2a8ffa7390a9ce5580f988ac",
"vout": 1,
"amount": 1.0101,
"confirmations":7
},
{
"address": "mhNCT9TwZAGF1tLPpZdqfkTmtBkY282YDW",
"txid": "2ac165fa7a3a2b535d106a0041c7568d03b531e58aeccdd3199d7289ab12cfc2",
"scriptPubKey": "76a9141448534cb1a1ec44665b0eb2326e570814afe3f188ac",
"vout": 0,
"confirmations": 1,
"amount": 10
}
];

// Private keys in WIF format (see TransactionBuilder.js for other options)
var keys = [
"cSq7yo4fvsbMyWVN945VUGUWMaSazZPWqBVJZyoGsHmNq6W4HVBV",
"cPa87VgwZfowGZYaEenoQeJgRfKW6PhZ1R65EHTkN1K19cSvc92G",
"cPQ9DSbBRLva9av5nqeF5AGrh3dsdW8p2E5jS4P8bDWZAoQTeeKB"
];

var peerman = new PeerManager();
peerman.addPeer(new Peer('127.0.0.1', 18333));

peerman.on('connect', function() {
var conn = peerman.getActiveConnection();
if (conn) {
var outs = [{address: toAddress, amount: amt}];
var opts = {remainderOut: {address: changeAddressString}};
var TransactionBuilder = bitcore.TransactionBuilder;

var tx = new TransactionBuilder(opts)
.setUnspent(unspent)
.setOutputs(outs)
.sign(keys)
.build();

/* Create and signing can be done in multiple steps:
*
* var builder = new bitcore.TransactionBuilder(opts)
* .setUnspent(utxos)
* .setOutputs(outs);
*
* // Sign with the first key
* builder.sign(key1);
* var tx = builder.build(); // Partially signed transaction
*
* // Sign with the second key
* builder.sign(key2);
* if (builder.isFullySigned()){
* var tx = builder.build();
* }
*
* var selectedUnspent = build.getSelectedUnspent(); // Retrieve selected unspent outputs from the transaction
*/
conn.sendTx(tx.serialize().toString('hex'));
}
conn.on('reject', function() {
console.log('Transaction Rejected');
var bitcore = require('bitcore');
var Peer = bitcore.Peer;
var TransactionBuilder = bitcore.TransactionBuilder;
var PeerManager = bitcore.PeerManager;

// Unspent transactions can be found via the insight.bitcore.io or blockchain.info APIs
var unspent = [{
'txid': '707108b5ba4f78dc951df4647a03365bf36432ea57fb641676045c5044daaea7',
'vout': 0,
'address': 'n3QDC7DzsMmN4mcyp3k7XGPX7zFXXHG387',
'scriptPubKey': '76a914f00c4a92ee2314ab08ac0283dc8d07d9bf2be32388ac',
'amount': 0.12345600,
'confirmations': 43537
}, {
'txid': '87a158d32833cb555aea27b6a21af569ccaeb8f9b19691e05f1e6c2b3440bdb3',
'vout': 1,
'address': 'mxdrp9s4mVxS9X4RBYiLe99v59V81XA5C3',
'scriptPubKey': '76a914bbc87986da6b17c7876db4efacf59a95e14f6cf588ac',
'amount': 0.05749800,
'confirmations': 43536
}

];

// Private keys in WIF format (see TransactionBuilder.js for other options)
var keys = [
'cQA75LXhV5JkMT8wkkqjR87SnHK4doh3c21p7PAd5tp8tc1tRBAY',
'cRz85dz9AiDieRpEwoucfXXQa1jdHHghcv6YnnVVGZ3MQyR1X4u2',
'cSq7yo4fvsbMyWVN945VUGUWMaSazZPWqBVJZyoGsHmNq6W4HVBV',
'cPa87VgwZfowGZYaEenoQeJgRfKW6PhZ1R65EHTkN1K19cSvc92G',
'cPQ9DSbBRLva9av5nqeF5AGrh3dsdW8p2E5jS4P8bDWZAoQTeeKB'
];

var peerman = new PeerManager({
network: 'testnet'
});
peerman.addPeer(new Peer('127.0.0.1', 18333));

peerman.on('connect', function() {
var conn = peerman.getActiveConnection();
if (conn) {
// define transaction output
var outs = [{
address: 'mhNCT9TwZAGF1tLPpZdqfkTmtBkY282YDW',
amount: 0.1337
}];
// set change address
var opts = {
remainderOut: {
address: 'n4g2TFaQo8UgedwpkYdcQFF6xE2Ei9Czvy'
}
};
var tx = new TransactionBuilder(opts)
.setUnspent(unspent)
.setOutputs(outs)
.sign(keys)
.build();

/* Create and signing can be done in multiple steps:
*
* var builder = new bitcore.TransactionBuilder(opts)
* .setUnspent(utxos)
* .setOutputs(outs);
*
* // Sign with the first key
* builder.sign(key1);
* var tx = builder.build(); // Partially signed transaction
*
* // Sign with the second key
* builder.sign(key2);
* if (builder.isFullySigned()){
* var tx = builder.build();
* }
*
* var selectedUnspent = build.getSelectedUnspent(); // Retrieve selected unspent outputs from the transaction
*/

var txid = tx.getHash().toString('hex');
console.log('Created transaction with txid '+txid);
var raw_tx = tx.serialize().toString('hex');
console.log('Transaction raw hex dump:');
console.log('-------------------------------------');
console.log(raw_tx);
console.log('-------------------------------------');
// finally, send transaction to the bitcoin network
conn.sendTx(tx);

// for now, the network won't respond in any case
// (transaction accepted, transaction rejected)
// in the future, we may listen to 'reject' message
// see https://gist.github.com/gavinandresen/7079034
}
});
});

peerman.start();
peerman.start();
```

## Parsing a Script
Expand Down
127 changes: 80 additions & 47 deletions examples/SendTx.js
View file
Original file line number Diff line number Diff line change
Expand Up @@ -4,67 +4,100 @@ var run = function() {
// Replace '../bitcore' with 'bitcore' if you use this code elsewhere.
var bitcore = require('../bitcore');
var Peer = bitcore.Peer;
var Transaction = bitcore.Transaction;
var Address = bitcore.Address;
var Script = bitcore.Script;
var coinUtil = bitcore.util;
var TransactionBuilder = bitcore.TransactionBuilder;
var PeerManager = bitcore.PeerManager;

var createTx = function() {
var TXIN = 'd05f35e0bbc495f6dcab03e599c8f5e32a07cdb4bc76964de201d06a2a7d8265';
var TXIN_N = 0;
var ADDR = 'muHct3YZ9Nd5Pq7uLYYhXRAxeW4EnpcaLz';
var VAL = '0.001';

var txobj = {
version: 1,
lock_time: 0,
ins: [],
outs: []
};

var txin = {
s: coinUtil.EMPTY_BUFFER, // Add signature
q: 0xffffffff
};

var hash = new Buffer(TXIN.split('').reverse(), 'hex');
var vout = parseInt(TXIN_N);
var voutBuf = new Buffer(4);

voutBuf.writeUInt32LE(vout, 0);
txin.o = Buffer.concat([hash, voutBuf]);
txobj.ins.push(txin);

var addr = new Address(ADDR);
var script = Script.createPubKeyHashOut(addr.payload());
var valueNum = coinUtil.parseValue(VAL);
var value = coinUtil.bigIntToValue(valueNum);

var txout = {
v: value,
s: script.getBuffer(),
};
txobj.outs.push(txout);
// Unspent transactions can be found via the insight.bitcore.io or blockchain.info APIs
var unspent = [{
'txid': '707108b5ba4f78dc951df4647a03365bf36432ea57fb641676045c5044daaea7',
'vout': 0,
'address': 'n3QDC7DzsMmN4mcyp3k7XGPX7zFXXHG387',
'scriptPubKey': '76a914f00c4a92ee2314ab08ac0283dc8d07d9bf2be32388ac',
'amount': 0.12345600,
'confirmations': 43537
}, {
'txid': '87a158d32833cb555aea27b6a21af569ccaeb8f9b19691e05f1e6c2b3440bdb3',
'vout': 1,
'address': 'mxdrp9s4mVxS9X4RBYiLe99v59V81XA5C3',
'scriptPubKey': '76a914bbc87986da6b17c7876db4efacf59a95e14f6cf588ac',
'amount': 0.05749800,
'confirmations': 43536
}

return new Transaction(txobj);
];

};
// Private keys in WIF format (see TransactionBuilder.js for other options)
var keys = [
'cQA75LXhV5JkMT8wkkqjR87SnHK4doh3c21p7PAd5tp8tc1tRBAY',
'cRz85dz9AiDieRpEwoucfXXQa1jdHHghcv6YnnVVGZ3MQyR1X4u2',
'cSq7yo4fvsbMyWVN945VUGUWMaSazZPWqBVJZyoGsHmNq6W4HVBV',
'cPa87VgwZfowGZYaEenoQeJgRfKW6PhZ1R65EHTkN1K19cSvc92G',
'cPQ9DSbBRLva9av5nqeF5AGrh3dsdW8p2E5jS4P8bDWZAoQTeeKB'
];

var peerman = new PeerManager();
var peerman = new PeerManager({
network: 'testnet'
});
peerman.addPeer(new Peer('127.0.0.1', 18333));

peerman.on('connect', function() {
var conn = peerman.getActiveConnection();
if (conn) {
conn.sendTx(createTx());
// define transaction output
var outs = [{
address: 'mhNCT9TwZAGF1tLPpZdqfkTmtBkY282YDW',
amount: 0.1337
}];
// set change address
var opts = {
remainderOut: {
address: 'n4g2TFaQo8UgedwpkYdcQFF6xE2Ei9Czvy'
}
};
var tx = new TransactionBuilder(opts)
.setUnspent(unspent)
.setOutputs(outs)
.sign(keys)
.build();

/* Create and signing can be done in multiple steps:
*
* var builder = new bitcore.TransactionBuilder(opts)
* .setUnspent(utxos)
* .setOutputs(outs);
*
* // Sign with the first key
* builder.sign(key1);
* var tx = builder.build(); // Partially signed transaction
*
* // Sign with the second key
* builder.sign(key2);
* if (builder.isFullySigned()){
* var tx = builder.build();
* }
*
* var selectedUnspent = build.getSelectedUnspent(); // Retrieve selected unspent outputs from the transaction
*/

var txid = tx.getHash().toString('hex');
console.log('Created transaction with txid '+txid);
var raw_tx = tx.serialize().toString('hex');
console.log('Transaction raw hex dump:');
console.log('-------------------------------------');
console.log(raw_tx);
console.log('-------------------------------------');
// finally, send transaction to the bitcoin network
conn.sendTx(tx);

// for now, the network won't respond in any case
// (transaction accepted, transaction rejected)
// in the future, we may listen to 'reject' message
// see https://gist.github.com/gavinandresen/7079034
}
conn.on('reject', function() {
console.log('Transaction Rejected');
});
});

peerman.start();

};

module.exports.run = run;
Expand Down

0 comments on commit fc1dcbd

Please sign in to comment.