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move relay to a separate repo

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poma 2019-07-18 21:20:58 +03:00
parent a5deeb8300
commit 5cd7544a29
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1 changed files with 0 additions and 56 deletions
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relay/relay.js
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@ -1,56 +0,0 @@
// This is still WiP
const bigInt = require('snarkjs/src/bigint')
const utils = require('../scripts/utils')
const express = require('express')
const app = express()
app.use(express.json())
// todo get from config
const RPC_ENDPOINT = 'http://localhost:8545'
const NET_ID = 42
// const PRIVATE_KEY = ''
const MAX_GAS = 1e6
const Web3 = require('web3')
const web3 = new Web3(RPC_ENDPOINT, null, { transactionConfirmationBlocks: 1 })
const contractJson = require('../build/contracts/Mixer.json')
const mixer = new web3.eth.Contract(contractJson.abi, contractJson.networks[NET_ID].address)
function getMinimumFee() {
// todo calc acceptable fee
return bigInt(1e16)
}
app.post('/deposit', async (req, resp) => {
let proof = req.body
if (!(proof.pi_a && proof.pi_b && proof.pi_c && proof.publicSignals)) { // check that it's kinda well formed
resp.status(400).end()
}
if (bigInt(proof.publicSignals[3]) < getMinimumFee()) {
resp.status(403).send('Fee is too low')
}
if (!utils.snarkVerify(proof)) {
resp.status(403).send('Invalid snark proof')
}
try {
const gas = await mixer.withdraw(proof.pi_a, proof.pi_b, proof.pi_b, proof.publicSignals).estimateGas()
if (gas > MAX_GAS) {
// something is wrong
}
const result = mixer.withdraw(proof.pi_a, proof.pi_b, proof.pi_b, proof.publicSignals).send()
result.once('transactionHash', function(hash){
resp.send({ transaction: hash })
}).on('error', function(e){
console.log(e)
resp.status(400).send('Transaction was reverted')
})
} catch (e) {
console.log(e)
resp.status(400).send('Transaction was reverted')
}
})
app.listen(3000)