truffle-config.js

const HDWalletProvider = require("@truffle/hdwallet-provider");
/**
 * Use this file to configure your truffle project. It's seeded with some
 * common settings for different networks and features like migrations,
 * compilation and testing. Uncomment the ones you need or modify
 * them to suit your project as necessary.
 *
 * More information about configuration can be found at:
 *
 * trufflesuite.com/docs/advanced/configuration
 *
 * To deploy via Infura you'll need a wallet provider (like @truffle/hdwallet-provider)
 * to sign your transactions before they're sent to a remote public node. Infura accounts
 * are available for free at: infura.io/register.
 *
 * You'll also need a mnemonic - the twelve word phrase the wallet uses to generate
 * public/private key pairs. If you're publishing your code to GitHub make sure you load this
 * phrase from a file you've .gitignored so it doesn't accidentally become public.
 *
 */

// const HDWalletProvider = require('@truffle/hdwallet-provider');
// const infuraKey = "fj4jll3k.....";
//
// const fs = require('fs');
// const mnemonic = fs.readFileSync(".secret").toString().trim();

module.exports = {
  /**
   * Networks define how you connect to your ethereum client and let you set the
   * defaults web3 uses to send transactions. If you don't specify one truffle
   * will spin up a development blockchain for you on port 9545 when you
   * run `develop` or `test`. You can ask a truffle command to use a specific
   * network from the command line, e.g
   *
   * $ truffle test --network <network-name>
   */
  plugins: ["solidity-coverage"],
  networks: {
    // Useful for testing. The `development` name is special - truffle uses it by default
    // if it's defined here and no other network is specified at the command line.
    // You should run a client (like ganache-cli, geth or parity) in a separate terminal
    // tab if you use this network and you must also set the `host`, `port` and `network_id`
    // options below to some value.
    //
    development: {
     host: "127.0.0.1",     // Localhost (default: none)
     port: 8545,            // Standard Ethereum port (default: none)
     network_id: "*",
     gas: 10000000,   
    },
    rinkeby: {
      host: "192.168.1.108",     // Localhost (default: none)
      port: 8503,            // Standard Ethereum port (default: none)
      network_id: "*",
      provider: () => new HDWalletProvider("your mnemonic here", 'http://192.168.1.108:8503'),
      gas: 10000000
     },
     gogo: {
      host: "your host here",     // Localhost (default: none)
      port: 443,            // Standard Ethereum port (default: none)
      network_id: "*",
      provider: () => new HDWalletProvider("your mnemoic here", 'your host here'),
     },
  },

  // Set default mocha options here, use special reporters etc.
  mocha: {
    reporter: 'eth-gas-reporter',
    reporterOptions: {
      src: "contracts",
      url: "http://127.0.0.1:8545",
      outputFile : "./gasCosts/gasReporterOutput.json"
    }
  },

  // Configure your compilers
  compilers: {
    solc: {
       version: "0.6.0",    // Fetch exact version from solc-bin (default: truffle's version)
      // docker: true,        // Use "0.5.1" you've installed locally with docker (default: false)
       settings: {          // See the solidity docs for advice about optimization and evmVersion
       optimizer: {
         enabled: true,
         runs: 200
       },
      //  evmVersion: "byzantium"
      }
    },
  },
};