Add a possibility to handle `The token has an invalid signature` error on creating relayedServer

[andrei-rodionov-idexx]

Actual Behavior

const RelayedServer = require('hyco-websocket').relayedServer;
const wsServer = new RelayedServer({
  server: ...,
  token: () => WebSocket.createRelayToken(...),
});

If token is invalid the following raw error appears in log at WebSocketClient.failHandshake (C:\Projects\IDEXX\CornerstoneCloud\infra\scripts\websocket-port-bridge\node_modules\hyco-websocket\node_modules\websocket\lib\WebSocketClient.js:339:32)

Expected Behavior

Should be able to handle this error in client code.
The issue is in HybridConnectionsWebSocketServer.js module (lines 258-260). Can we just add a line server.emit('error', event); in client.on('connectFailed'... event

Versions

• OS platform and version: Microsoft Windows 8.1 Pro
• Node Version: v10.9.0
• NPM package version or commit ID: 1.0.5

[jfggdl]

We will be planning for improvements to our SDKs and this item is already on our backlog.