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safe-react/docs/networks.md

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Network Configuration

Network configuration structure

We have currently this structure for the network configuration:

  • This is the main configuration that you need to provide in order to add a new network.
export interface NetworkConfig {
  network: NetworkSettings
  disabledFeatures?: SafeFeatures
  disabledWallets?: Wallets
  environment: SafeEnvironments
}

NetworkSettings

  • It contains the Ethereum compatible network id, the network name, information about the native coin of that network and a boolean to indicate if the network is a testnet or a production network.
export type NetworkSettings = {
  id: ETHEREUM_NETWORK,
  backgroundColor: string,
  textColor: string,
  label: string,
  isTestNet: boolean,
  nativeCoin: Token,
}
  • Currently supported Ethereum compatible networks:
export enum ETHEREUM_NETWORK {
  MAINNET = 1,
  MORDEN = 2,
  ROPSTEN = 3,
  RINKEBY = 4,
  GOERLI = 5,
  KOVAN = 42,
  XDAI = 100,
  ENERGY_WEB_CHAIN = 246,
  VOLTA = 73799,
  UNKNOWN = 0,
  LOCAL = 4447,
}
  • This is the structure to define the native coin:
type Token = {
  address: string
  name: string
  symbol: string
  decimals: number
  logoUri?: string
}

SafeFeatures

It's an array that contains a list of features that should be disabled for the network. It's empty by default.

export type SafeFeatures = FEATURES[]

export enum FEATURES {
  ERC721 = 'ERC721',
  ERC1155 = 'ERC1155',
  SAFE_APPS = 'SAFE_APPS',
  CONTRACT_INTERACTION = 'CONTRACT_INTERACTION',
  DOMAIN_LOOKUP = 'DOMAIN_LOOKUP'
}

Wallets

It's an array that contains a list of wallets that will be disabled for the network. It's empty by default.

export type Wallets = WALLETS[]

export enum WALLETS {
  METAMASK = 'metamask',
  WALLET_CONNECT = 'walletConnect',
  TREZOR = 'trezor',
  LEDGER = 'ledger',
  TRUST = 'trust',
  DAPPER = 'dapper',
  FORTMATIC = 'fortmatic',
  PORTIS = 'portis',
  AUTHEREUM = 'authereum',
  TORUS = 'torus',
  UNILOGIN = 'unilogin',
  COINBASE = 'coinbase',
  WALLET_LINK = 'walletLink',
  OPERA = 'opera',
  OPERA_TOUCH = 'operaTouch'
}

SafeEnviroments

If the network has different enviroments, you can add them here, otherwise you should only add production settings

type SafeEnvironments = {
  dev?: EnvironmentSettings
  staging?: EnvironmentSettings
  production: EnvironmentSettings
}

We use a transaction service (txServiceUrl) to fetch transactions and balances of each safe and also to POST messages with the created transactions, this should be provided by Gnosis.

The networkExplorer parameters are used to provide information related to the networkExplorer used for the given network (Blockscout for xDai, Etherscan for mainnet, etc). This is used for link transaction hashes and addresses to the given network explorer.

export type EnvironmentSettings = GasPrice & {
  txServiceUrl: string
  relayApiUrl?: string
  safeAppsUrl: string
  rpcServiceUrl: string
  networkExplorerName: string
  networkExplorerUrl: string
  networkExplorerApiUrl: string
}

The gasPrice is used to indicate a fixed amount for some networks (like xDai), otherwise you can provide an oracle we can use to fetch the current gas price.

type GasPrice = {
  gasPrice: number
  gasPriceOracle?: GasPriceOracle
} | {
  gasPrice?: number
  // for infura there's a REST API Token required stored in: `REACT_APP_INFURA_TOKEN`
  gasPriceOracle: GasPriceOracle
}

export type GasPriceOracle = {
  url: string
  // Different gas api providers can use a different name to reflect different gas levels based on tx speed
  // For example in ethGasStation for ETHEREUM_MAINNET = safeLow | average | fast
  gasParameter: string
}

Enviroment variables:

  • REACT_APP_NETWORK: name of the used network (ex: xDai, mainnet, rinkeby)
  • REACT_APP_GOOGLE_ANALYTICS: Used for enabling google analytics
  • REACT_APP_PORTIS_ID: Portis ID for enabling it on given network
  • REACT_APP_FORTMATIC_KEY: Formatic yey for given network

How to add a network

  1. In case that it is not already supported, add the network on the ETHEREUM_NETWORK enum in src/config/networks/network.d.ts
export enum ETHEREUM_NETWORK {
  MAINNET = 1,
  MORDEN = 2,
  ROPSTEN = 3,
  RINKEBY = 4,
  GOERLI = 5,
  KOVAN = 42,
  XDAI = 100,
  ENERGY_WEB_CHAIN = 246,
  VOLTA = 73799,
  UNKNOWN = 0,
  LOCAL = 4447,
}
  1. Add env variables:
  • REACT_APP_NETWORK
  • REACT_APP_GOOGLE_ANALYTICS
  • REACT_APP_PORTIS_ID
  • REACT_APP_FORTMATIC_KEY
  1. Add the NetworkSettings in src/config/networks as <network_name>.ts:
import { EnvironmentSettings, ETHEREUM_NETWORK, NetworkConfig } from 'src/config/networks/network.d'

const baseConfig: EnvironmentSettings = {
  txServiceUrl: '',
  safeAppsUrl: '',
  gasPriceOracleUrl: '',
  gasPriceOracle: {
    url: '',
    gasParameter: '',
  },
  rpcServiceUrl: '',
  networkExplorerName: '',
  networkExplorerUrl: '',
  networkExplorerApiUrl: '',
}

const rinkeby: NetworkConfig = {
  environment: {
    dev: {
      ...baseConfig,
    },
    staging: {
      ...baseConfig,
      safeAppsUrl: '',
    },
    production: {
      ...baseConfig,
      txServiceUrl: '',
      safeAppsUrl: '',
    },
  },
  network: {
    id: ETHEREUM_NETWORK.<NETWORK_NAME>,
    backgroundColor: '',
    textColor: '',
    label: '',
    isTestNet: true/false,
    nativeCoin: {
      address: '',
      name: '',
      symbol: '',
      decimals: 0,
      logoUri: '',
    },
  },
  disabledFeatures: [],
  disabledWallets: []
}

export default <NETWORK_NAME>

Configuration example (xDai) - fixed gas price

  1. ETHEREUM_NETWORK
export enum ETHEREUM_NETWORK {
  MAINNET = 1,
  MORDEN = 2,
  ROPSTEN = 3,
  RINKEBY = 4,
  GOERLI = 5,
  KOVAN = 42,
  XDAI = 100, -> ADDED XDAI
  ENERGY_WEB_CHAIN = 246,
  VOLTA = 73799,
  UNKNOWN = 0,
  LOCAL = 4447,
}
  1. Network file xdai
import { ETHEREUM_NETWORK, NetworkConfig } from 'src/config/networks/network.d'

const xDai: NetworkConfig = {
  environment: {
    production: {
     txServiceUrl: 'https://safe-transaction.xdai.gnosis.io/api/v1',
     safeAppsUrl: 'https://safe-apps-xdai.staging.gnosisdev.com',
     gasPrice: 1e9,
     rpcServiceUrl: 'https://dai.poa.network/',
     networkExplorerName: 'Blockscout',
     networkExplorerUrl: 'https://blockscout.com/poa/xdai',
     networkExplorerApiUrl: 'https://blockscout.com/poa/xdai/api',
    },
  },
  network: {
    id: ETHEREUM_NETWORK.XDAI,
    backgroundColor: '#48A8A6',
    textColor: '#ffffff',
    label: 'xDai',
    isTestNet: false,
    nativeCoin: {
      address: '0x000',
      name: 'xDai',
      symbol: 'xDai',
      decimals: 18,
      logoUri: xDaiLogo,
    },
  },
  disabledWallets:[
    WALLETS.TREZOR,
    WALLETS.LEDGER
  ]
}

export default xDai

Configuration example (Mainnet) - gas price retrieven by oracle

Network file mainnet

const baseConfig: EnvironmentSettings = {
  txServiceUrl: 'https://safe-transaction.mainnet.staging.gnosisdev.com/api/v1',
  safeAppsUrl: 'https://safe-apps.dev.gnosisdev.com',
  gasPriceOracle: {
    url: 'https://ethgasstation.info/json/ethgasAPI.json',
    gasParameter: 'average',
  },
  rpcServiceUrl: 'https://mainnet.infura.io:443/v3',
  networkExplorerName: 'Etherscan',
  networkExplorerUrl: 'https://etherscan.io',
  networkExplorerApiUrl: 'https://api.etherscan.io/api',
}

const mainnet: NetworkConfig = {
  environment: {
    dev: {
      ...baseConfig,
    },
    staging: {
      ...baseConfig,
      safeAppsUrl: 'https://safe-apps.staging.gnosisdev.com',
    },
    production: {
      ...baseConfig,
      txServiceUrl: 'https://safe-transaction.mainnet.gnosis.io/api/v1',
      safeAppsUrl: 'https://apps.gnosis-safe.io',
    },
  },
  network: {
    id: ETHEREUM_NETWORK.MAINNET,
    backgroundColor: '#E8E7E6',
    textColor: '#001428',
    label: 'Mainnet',
    isTestNet: false,
    nativeCoin: {
      address: '0x000',
      name: 'Ether',
      symbol: 'ETH',
      decimals: 18,
      logoUri: EtherLogo,
    },
  }
}

export default mainnet