Bridge

An application for interacting with Azimuth.

Usage

Requirements

Python 3.7.2

Instructions

Install

1. Download a release
2. Unzip it (bridge-$version.zip)
3. Open up your command line interface (Terminal on MacOS, Command Prompt on Windows)
4. cd into the bridge-$version directory

Follow the instructions below to run Bridge.

Run Bridge

If you plan to authenticate and sign transactions with a Master Ticket, BIP39 mnemonic, Ethereum private key, or keystore file:

1. cd into the bridge-$version directory
2. Run python3 -m http.server 5000 --bind 127.0.0.1
3. Navigate to http://localhost:5000 using a web browser to access Bridge (we recommend using Firefox or Chrome)

Run Bridge with Ledger support

If you plan to authenticate and sign transactions with a Ledger, Bridge must be serving over HTTPS on localhost. This requires self-signed certificates. To do this:

1. Install mkcert
2. If you're using Firefox, additionally install nss
3. Install a local certificate authority via mkcert -install
4. From the bridge-$version directory, run mkcert localhost to generate a certificate valid for localhost. This will produce two files: localhost.pem, the local certificate, and localhost-key.pem, its corresponding private key
5. Run python bridge-https.py
6. Navigate to https://localhost:4443 in a web browser to access Bridge

Verify checksums

To validate your downloaded file's integrity, compare the lines in checksum.txt to SHA-256 hashes of the bridge-$version directory's contents.

• On MacOS: shasum -a 256 -c checksums.txt .
• On Linux: sha256sum -c checksums.txt .
• On Windows: Go into the build directory and verify files individually with CertUtil -hashFile [file_name] SHA256

Development notes

Install / Build

Clone the repo, and use a simple npm install. You can then use a npm run build to create an optimised static build (serve it with e.g. serve).

General notes

For development, use npm run pilot to get going after a npm install. This will boot up a Ganache node in the background, deploy the Azimuth contracts to it, and fire up a local webserver. Bridge will be served on localhost:3000.

Note that one of our dependencies itself depends on a library called handle-thing which breaks under the Ledger support requirements (see below) on node 11.1.0, so make sure you're using some other node version.

You can use nvm, for example, and do:

$ nvm install 11.0.0
$ nvm use v11.0.0

before running npm run pilot.

Useful accounts

The ecliptic owner is the only account that's able to create galaxies, so it's a good place to get started. On the testnet, it's the address:

0x6DEfFb0caFDB11D175F123F6891AA64F01c24F7d

You can authenticate as it using the following mnemonic:

benefit crew supreme gesture quantum web media hazard theory mercy wing kitten

Under that mnemonic, Ganache will also auto-populate the following accounts with 100 ETH:

0x6deffb0cafdb11d175f123f6891aa64f01c24f7d
0xd53208cf45fc9bd7938b200bff8814a26146688f
0x7b2a2d51e4d8fac602e20a5f6907ff9fbd88e1fd
0xf48062ae8bafd6ef19cd6cb89db93a0d0ca6ce26
0xf84a77aeb351c49dfa87e805a659d2daddff7606
0x167e357cf8b845370d0d408f9b389b66185b7b5b
0xcbecf3abc9878f07afc851aead2d8f1c436cc71d
0x0afc0c3f4eeea500871f464ca71eef5e54a9af36
0x6d654ef2489674d21aed428e8a4ad8ca4820f125
0x218f6f87683db546ad47a5dc8b480e5a9b694866

To play around with any of these, authenticate using the same mnemonic, but use a custom HD path of m/44'/60'/0'/0/1, m/44'/60'/0'/0/2, and so on.

Initial development state

You can also tweak a couple of things to change your development state somewhat (say, for example, you want to start on the points list screen, instead of having to re-authenticate whenever you make a change or refresh the page):

• The .env.development file contains environment variables that you can provide to the application when it's running in development. You can access them via process.env.REACT_APP_<whatever>.

• Set REACT_APP_STUB_LOCAL='true' in .env.development to enabled stubbing of certain methods throughout the app.

• The top of the Bridge component in src/Bridge.js can be tweaked for setting your initial state. You can provide a specific wallet, network type, and so on.

HTTPS

For development, you can enable HTTPS on localhost without a certificate for Chrome by pasting the following into the URL bar:

chrome://flags/#allow-insecure-localhost

In Firefox, you may need to allow connecting to the unsecured local node websocket. Do this by going to about:config and setting the network.websocket.allowInsecureFromHTTPS flag to true.

Additionally you need to run with the HTTPS environment variable set to true. Note that npm run pilot will handle this automatically.

Releases

To generate a release bridge-$VERSION.zip file, use a simple npm run release.

This will pack the build directory together with the README, bridge-https.py script, and also generate a set of checksums for the build directory. You can verify the checksums on e.g. OS X via shasum -c checksums.txt.