message: update certs.iotex.io
diff: @@ -5,7 +5,7 @@ const fetch = require("isomorphic-unfetch");
  function createServerWithCertAndKey(port, cert, key, callback) {
  const server = https.createServer({ cert, key });
  - server.listen(port, "local.get-scatter.com");
  + server.listen(port, "local.iotex.io");
  const namespace = new WebSocket.Server({
  server
  });
  @@ -20,7 +20,7 @@ function createServer(port, callback) {
  const getCerts = async () => {
  return fetch(
  - "https://certs.get-scatter.com?rand=" + Math.round(Math.random() * 100 + 1)
  + "https://certs.iotex.io?rand=" + Math.round(Math.random() * 100 + 1)
  )
  .then(res => res.json())
  .catch(err =>
  