I'm running melodic on macOS 10.13.6.

I got the latest rosauth and rosbridgesuite from git and have them in my catkinws and build ok. I also have my test project which launches the rosbridge server and a simple python web server for the webpage.

Here's the javascript snippet that is used to connect:

$(function() {
  var ros = new ROSLIB.Ros({
    url : 'ws://127.0.0.1:9090'
  });
  window.ros = ros;

  ros.on('connection', function() {
    console.log('Connected to websocket server.');
    $('#status span').html('Connected');
  });

  ros.on('error', function(error) {
    console.log('Error connecting to websocket server: ', error);
    $('#status span').html('Error');
  });

  ros.on('close', function() {
    console.log('Connection to websocket server closed.');
    $('#status span').html('Disconnected');
  });

And here's the console output:

Connected to websocket server.
ros.getNodes(function(n){console.log(n)});
undefined
main.js:18 Connection to websocket server closed.
ros.connect('ws://127.0.0.1:9090')
undefined
main.js:8 Connected to websocket server.
ros
d {socket: WebSocket, idCounter: 1, isConnected: true, transportLibrary: "websocket", transportOptions: {…}, …}event: "connection"groovyCompatibility: trueidCounter: 1isConnected: truesocket: WebSocket {url: "ws://127.0.0.1:9090/", readyState: 1, bufferedAmount: 0, onopen: ƒ, onerror: ƒ, …}transportLibrary: "websocket"transportOptions: {}_conf: {maxListeners: 0}_events: {maxListeners: 0, connection: ƒ, error: ƒ, close: ƒ, call_service:/rosapi/nodes:1: ƒ}__proto__: g
ros.getNodes(function(n){console.log(n)});
undefined
main.js:18 Connection to websocket server closed.
ros
d {socket: WebSocket, idCounter: 2, isConnected: false, transportLibrary: "websocket", transportOptions: {…}, …}event: "close"groovyCompatibility: trueidCounter: 2isConnected: falsesocket: WebSocket {url: "ws://127.0.0.1:9090/", readyState: 3, bufferedAmount: 0, onopen: ƒ, onerror: ƒ, …}transportLibrary: "websocket"transportOptions: {}_conf: {maxListeners: 0}_events: {maxListeners: 0, connection: ƒ, error: ƒ, close: ƒ, call_service:/rosapi/nodes:1: ƒ, …}__proto__: g

Here't the output from the terminal window

[INFO] [1542421699.375919]: Serving at 127.0.0.1:8080
registered capabilities (classes):
 - rosbridge_library.capabilities.call_service.CallService
 - rosbridge_library.capabilities.advertise.Advertise
 - rosbridge_library.capabilities.publish.Publish
 - rosbridge_library.capabilities.subscribe.Subscribe
 - <class 'rosbridge_library.capabilities.defragmentation.Defragment'>
 - rosbridge_library.capabilities.advertise_service.AdvertiseService
 - rosbridge_library.capabilities.service_response.ServiceResponse
 - rosbridge_library.capabilities.unadvertise_service.UnadvertiseService
[INFO] [1542421699.610645]: Rosbridge WebSocket server started on port 9090
127.0.0.1 - - [16/Nov/2018 21:28:37] "GET / HTTP/1.1" 200 -
127.0.0.1 - - [16/Nov/2018 21:28:37] "GET /main.js HTTP/1.1" 200 -
127.0.0.1 - - [16/Nov/2018 21:28:38] code 404, message File not found
127.0.0.1 - - [16/Nov/2018 21:28:38] "GET /favicon.ico HTTP/1.1" 404 -
127.0.0.1 - - [16/Nov/2018 21:29:25] "GET / HTTP/1.1" 200 -
127.0.0.1 - - [16/Nov/2018 21:33:34] "GET / HTTP/1.1" 200 -
127.0.0.1 - - [16/Nov/2018 21:33:34] "GET /main.js HTTP/1.1" 200 -
[INFO] [1542422015.325308]: Client connected.  1 clients total.
[INFO] [1542422020.249735]: Client disconnected. 0 clients total.
127.0.0.1 - - [16/Nov/2018 21:34:18] "GET / HTTP/1.1" 200 -
127.0.0.1 - - [16/Nov/2018 21:34:19] "GET /main.js HTTP/1.1" 200 -
[INFO] [1542422059.736674]: Client connected.  1 clients total.
[INFO] [1542422077.388880]: Client disconnected. 0 clients total.
127.0.0.1 - - [16/Nov/2018 21:34:57] "GET / HTTP/1.1" 200 -
127.0.0.1 - - [16/Nov/2018 21:34:57] "GET /main.js HTTP/1.1" 200 -
[INFO] [1542422098.519738]: Client connected.  1 clients total.
127.0.0.1 - - [16/Nov/2018 21:39:40] "GET / HTTP/1.1" 200 -
[INFO] [1542422380.567272]: Client disconnected. 0 clients total.
127.0.0.1 - - [16/Nov/2018 21:39:40] "GET /main.js HTTP/1.1" 200 -
[INFO] [1542422381.380018]: Client connected.  1 clients total.
[INFO] [1542422386.657175]: Client disconnected. 0 clients total.
127.0.0.1 - - [16/Nov/2018 21:41:34] "GET / HTTP/1.1" 200 -
127.0.0.1 - - [16/Nov/2018 21:41:34] "GET /main.js HTTP/1.1" 200 -
[INFO] [1542422495.102058]: Client connected.  1 clients total.
[INFO] [1542422539.985192]: Client disconnected. 0 clients total.
[INFO] [1542422906.580086]: Client connected.  1 clients total.
[INFO] [1542422919.389533]: Client disconnected. 0 clients total.
[INFO] [1542422936.279464]: Client connected.  1 clients total.
[INFO] [1542423000.416417]: Client disconnected. 0 clients total.

Here I'm using the getNodes function, but any function that tries to interact with the server leads to the same result.

I have also gotten the same code to work on a ubuntu vm running kinetic. (Slight changes to the url and adding the necessary packages to the catkin ws)

authenticate(mac, client, dest, rand, t, level, end)
Sends an authorization request to the server.
Parameters:
Name    Type    Description
mac         MAC (hash) string given by the trusted source.
client      IP of the client.
dest        IP of the destination.
rand        Random string given by the trusted source.
t       Time of the authorization request.
level       User level as a string given by the client.
end         End time of the client's session.