DEV_README.md

Configuring truffle

Guide to properly configure truffle to build and deploy contracts to the network

Add local testnet

Edit truffle.js :

  networks: {
    development: {
      host: "",
      port: 8545,
      network_id: "*",
      gas: 2900000
    }
  }

Commands

$ truffle init #initialize truffle project
$ truffle console
$ truffle deploy
$ truffle migrate --reset --compile-all #redeploy the smat contracts

Errors

Here is a list of possible errors:

ParserError: Expected token Semicolon got 'LParen'

Emitting events gives compilation error if solc-js not 0.4.21 Update truffle using:

$ cd /usr/lib/node_modules/truffle
$ npm install solc@0.4.21 --save

Account is locked/Auth needed

$ truffle console
truffle(development)> var acc = web3.eth.accounts[0]
truffle(development)> web3.personal.unlockAccount(acc, 'pass', 36000)

Then deploy. Repeat the step when needed

Intrinsic gas too low

$ truffle console
truffle(development)> web3.eth.getBlock("pending").gasLimit
xxxxxxx

edit truffle.js

    development: {
        ...
        gas: xxxxxxxxx,
        network_id: "*"
    }