merged-pooler
Advanced tools
High performance Stratum poolserver in Node.js. One instance of this software can startup and manage multiple coin pools, each with their own daemon and stratum ports :)
I am trying to make this useable software. On my list of up-front todos:
Frontend and payment enhancements will be a separate repo. Merged Pooler
The software that I forked was a wonderful beginning that never came to fruition. I hope to bring Node stratum into the mainstream of merged mining.
May be working (needs additional testing):
Not working currently:
git clone https://github.com/sigwo/node-merged-pool
cd node-merged-pool
npm install
======= Create the configuration for your coin:
Possible options for algorithm: sha256, scrypt, scrypt-jane, scrypt-n, quark, x11, keccak, blake,
skein, groestl, fugue, shavite3, hefty1, qubit, or sha1.
var myCoin = {
"name": "Dogecoin",
"symbol": "DOGE",
"algorithm": "scrypt",
"nValue": 1024, //optional - defaults to 1024
"rValue": 1, //optional - defaults to 1
"txMessages": false, //optional - defaults to false,
/* Magic value only required for setting up p2p block notifications. It is found in the daemon
source code as the pchMessageStart variable.
For example, litecoin mainnet magic: http://git.io/Bi8YFw
And for litecoin testnet magic: http://git.io/NXBYJA */
"peerMagic": "fbc0b6db" //optional
"peerMagicTestnet": "fcc1b7dc" //optional
};
If you are using the scrypt-jane algorithm there are additional configurations:
var myCoin = {
"name": "Freecoin",
"symbol": "FEC",
"algorithm": "scrypt-jane",
"chainStartTime": 1375801200, //defaults to 1367991200 (YACoin) if not used
"nMin": 6, //defaults to 4 if not used
"nMax": 32 //defaults to 30 if not used
};
If you are using the scrypt-n algorithm there is an additional configuration:
var myCoin = {
"name": "Execoin",
"symbol": "EXE",
"algorithm": "scrypt-n",
/* This defaults to Vertcoin's timetable if not used. It is required for scrypt-n coins that
have modified their N-factor timetable to be different than Vertcoin's. */
"timeTable": {
"2048": 1390959880,
"4096": 1438295269,
"8192": 1485630658,
"16384": 1532966047,
"32768": 1580301436,
"65536": 1627636825,
"131072": 1674972214,
"262144": 1722307603
}
};
If you are using the keccak algorithm there are additional configurations (The rare normalHashing keccak coins
such as Copperlark and eCoin don't appear to work yet - only the popular ones like Maxcoin are):
var myCoin = {
"name": "eCoin",
"symbol": "ECN",
"algorithm": "keccak",
/* This is not required and set to false by default. Some coins such as Copperlark and eCoin
require it to be set to true. Maxcoin and most others are false. */
"normalHashing": true
};
Create and start new pool with configuration options and authentication function
var Stratum = require('stratum-pool');
var pool = Stratum.createPool({
"coin": myCoin,
"address": "mi4iBXbBsydtcc5yFmsff2zCFVX4XG7qJc", //Address to where block rewards are given
/* Block rewards go to the configured pool wallet address to later be paid out to miners,
except for a percentage that can go to, for examples, pool operator(s) as pool fees or
or to donations address. Addresses or hashed public keys can be used. Here is an example
of rewards going to the main pool op, a pool co-owner, and NOMP donation. */
"rewardRecipients": {
"n37vuNFkXfk15uFnGoVyHZ6PYQxppD3QqK": 1.5, //1.5% goes to pool op
"mirj3LtZxbSTharhtXvotqtJXUY7ki5qfx": 0.5, //0.5% goes to a pool co-owner
/* 0.1% donation to NOMP. This pubkey can accept any type of coin, please leave this in
your config to help support NOMP development. */
"22851477d63a085dbc2398c8430af1c09e7343f6": 0.1
},
"blockRefreshInterval": 1000, //How often to poll RPC daemons for new blocks, in milliseconds
/* Some miner apps will consider the pool dead/offline if it doesn't receive anything new jobs
for around a minute, so every time we broadcast jobs, set a timeout to rebroadcast
in this many seconds unless we find a new job. Set to zero or remove to disable this. */
"jobRebroadcastTimeout": 55,
//instanceId: 37, //Recommend not using this because a crypto-random one will be generated
/* Some attackers will create thousands of workers that use up all available socket connections,
usually the workers are zombies and don't submit shares after connecting. This features
detects those and disconnects them. */
"connectionTimeout": 600, //Remove workers that haven't been in contact for this many seconds
/* Sometimes you want the block hashes even for shares that aren't block candidates. */
"emitInvalidBlockHashes": false,
/* Enable for client IP addresses to be detected when using a load balancer with TCP proxy
protocol enabled, such as HAProxy with 'send-proxy' param:
http://haproxy.1wt.eu/download/1.5/doc/configuration.txt */
"tcpProxyProtocol": false,
/* If a worker is submitting a high threshold of invalid shares we can temporarily ban their IP
to reduce system/network load. Also useful to fight against flooding attacks. If running
behind something like HAProxy be sure to enable 'tcpProxyProtocol', otherwise you'll end up
banning your own IP address (and therefore all workers). */
"banning": {
"enabled": true,
"time": 600, //How many seconds to ban worker for
"invalidPercent": 50, //What percent of invalid shares triggers ban
"checkThreshold": 500, //Check invalid percent when this many shares have been submitted
"purgeInterval": 300 //Every this many seconds clear out the list of old bans
},
/* Each pool can have as many ports for your miners to connect to as you wish. Each port can
be configured to use its own pool difficulty and variable difficulty settings. varDiff is
optional and will only be used for the ports you configure it for. */
"ports": {
"3032": { //A port for your miners to connect to
"diff": 32, //the pool difficulty for this port
/* Variable difficulty is a feature that will automatically adjust difficulty for
individual miners based on their hashrate in order to lower networking overhead */
"varDiff": {
"minDiff": 8, //Minimum difficulty
"maxDiff": 512, //Network difficulty will be used if it is lower than this
"targetTime": 15, //Try to get 1 share per this many seconds
"retargetTime": 90, //Check to see if we should retarget every this many seconds
"variancePercent": 30 //Allow time to very this % from target without retargeting
}
},
"3256": { //Another port for your miners to connect to, this port does not use varDiff
"diff": 256 //The pool difficulty
}
},
/* Recommended to have at least two daemon instances running in case one drops out-of-sync
or offline. For redundancy, all instances will be polled for block/transaction updates
and be used for submitting blocks. Creating a backup daemon involves spawning a daemon
using the "-datadir=/backup" argument which creates a new daemon instance with it's own
RPC config. For more info on this see:
- https://en.bitcoin.it/wiki/Data_directory
- https://en.bitcoin.it/wiki/Running_bitcoind */
"daemons": [
{ //Main daemon instance
"host": "127.0.0.1",
"port": 19332,
"user": "litecoinrpc",
"password": "testnet"
},
{ //Backup daemon instance
"host": "127.0.0.1",
"port": 19344,
"user": "litecoinrpc",
"password": "testnet"
}
],
/* This allows the pool to connect to the daemon as a node peer to receive block updates.
It may be the most efficient way to get block updates (faster than polling, less
intensive than blocknotify script). It requires the additional field "peerMagic" in
the coin config. */
"p2p": {
"enabled": false,
/* Host for daemon */
"host": "127.0.0.1",
/* Port configured for daemon (this is the actual peer port not RPC port) */
"port": 19333,
/* If your coin daemon is new enough (i.e. not a shitcoin) then it will support a p2p
feature that prevents the daemon from spamming our peer node with unnecessary
transaction data. Assume its supported but if you have problems try disabling it. */
"disableTransactions": true
}
}, function(ip, port , workerName, password, callback){ //stratum authorization function
console.log("Authorize " + workerName + ":" + password + "@" + ip);
callback({
error: null,
authorized: true,
disconnect: false
});
});
Listen to pool events
/*
'data' object contains:
job: 4, //stratum work job ID
ip: '71.33.19.37', //ip address of client
port: 3333, //port of the client
worker: 'matt.worker1', //stratum worker name
height: 443795, //block height
blockReward: 5000000000, //the number of satoshis received as payment for solving this block
difficulty: 64, //stratum worker difficulty
shareDiff: 78, //actual difficulty of the share
blockDiff: 3349, //block difficulty adjusted for share padding
blockDiffActual: 3349 //actual difficulty for this block
//AKA the block solution - set if block was found
blockHash: '110c0447171ad819dd181216d5d80f41e9218e25d833a2789cb8ba289a52eee4',
//Exists if "emitInvalidBlockHashes" is set to true
blockHashInvalid: '110c0447171ad819dd181216d5d80f41e9218e25d833a2789cb8ba289a52eee4'
//txHash is the coinbase transaction hash from the block
txHash: '41bb22d6cc409f9c0bae2c39cecd2b3e3e1be213754f23d12c5d6d2003d59b1d,
error: 'low share difficulty' //set if share is rejected for some reason
*/
pool.on('share', function(isValidShare, isValidBlock, data){
if (isValidBlock)
console.log('Block found');
else if (isValidShare)
console.log('Valid share submitted');
else if (data.blockHash)
console.log('We thought a block was found but it was rejected by the daemon');
else
console.log('Invalid share submitted')
console.log('share data: ' + JSON.stringify(data));
});
/*
'severity': can be 'debug', 'warning', 'error'
'logKey': can be 'system' or 'client' indicating if the error
was caused by our system or a stratum client
*/
pool.on('log', function(severity, logKey, logText){
console.log(severity + ': ' + '[' + logKey + '] ' + logText);
});
Start pool
pool.start();
Below is my donation address. The original dev addresses are listed because I felt scammy if I removed them. They no longer are supporting the current development effort. Please donate to:
1BRUcdAdjdQoAgUwcN7nbNDzqhL92ub3xE197f17af3751709b2c7f076a2d3393e064022e91Original author (zone117x):
1KRotMnQpxu3sePQnsVLRy3EraRFYfJQFRLKfavSDJmwiFdcgaP1bbu46hhyiWw5oFhEVgW4uFTZcimMSvcnE4cwS3bjJ6P8bcTykNmWexUXRCX5PWBmfh34p11wzS5WX2VWvTRTQehPDAhzVQWPwDPQvmn7iT3PoFUGT7o8bCXcQmhp8ANR7okWAuArcNFZ2bHSB81jpapQDBGGVtwAAit1NPZpRm5Nz9VUFErcvVvHYW254ca13444be14937b36c44ba29160bd8f02ff76Released under the GNU General Public License v2
FAQs
High performance Stratum poolserver in Node.js for merged mining
We found that merged-pooler demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 1 open source maintainer collaborating on the project.
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