CryptoMonitor-ExchangeService

Client example

<script>
  (function() {
    var socket = io('http://localhost:3000', {path: '/crypto-monitor', reconnect: true, forceNew: true}).connect();
    socket.on('connect', function(data) {
      console.log(data);
      socket.emit('getExchangeRate', {
        subs: {
          exchange: 'Poloniex',
          fromCoin: 'BTC',
          toCoin: 'USD'
        }
      });

      socket.emit('getExchangeRates', {
        subs: [
          {
            exchange: 'Binance',
            fromCoin: 'VEN',
            toCoin: 'BTC'
          },
          {
            exchange: 'Binance',
            fromCoin: 'ETH',
            toCoin: 'BTC'
          },
          {
            exchange: 'Binance',
            fromCoin: 'CND',
            toCoin: 'BTC'
          }
        ]
      });
    });

    socket.on('coinExchange', function(data) {
      console.log('Data from coinExchange');
      console.log(data);
    });

    socket.on('coinExchanges', function(data) {
      console.log('Data from coinExchanges');
      console.log(data);
    });
  })()

</script>

Signing the request

To form the request query - x-crypto-monitor-signature

Run the following command to generate the keys from the root directory of this project.

  openssl genrsa -out ./lib/config/local-keys/my-server.key.pem 2048
  openssl rsa -in ./lib/config/local-keys/my-server.key.pem -pubout -out ./lib/config/local-keys/client/my-server.pub

To generate the signature use ursa to encrypt the message with base64

To generate the message create a string with CryptoMonitor/<eventName>/POST/<secretKey>

For node

const ursa                = require('ursa');
const configs             = require('./../config/configs');
const secretKey           = configs.get('SECRET-KEY');
const publicKeySignature  = ursa.createPublicKey(configs.get('PUBLIC_KEY'));

const verifySignature = ({ query }) => {
  const { 'x-crypto-monitor-signature': crypto_signature } = query;
  const msg = `CryptoMonitor/POST/${secretKey}/getExchanges`;
  const signature = publicKeySignature.encrypt(msg, 'utf8', 'base64');
  
  // The signature sent from the client needs to be decrypted before the handshake is complete
};

The generated signature should be sent as a query in the handshake

Please refer to socketio for details on how to send the query.

Please refer to example-index.html on how to format the query