Trouble connecting Espruino ws module to domain hosted on EC2

Hi there.

I've been working on a project that uses the ws module (as shown here) to connect to a node process running a WebSocket server.

When running the server locally and connecting the Espruino to the same WiFi, the board is able to open a socket and communicate with the host given the ip address (ie 192.168.x.yy).

However, when running the server on an EC2 on AWS the Espruino is unable to connect to the host (ie ec2-xx-yyy-zzz-v.compute-1.amazonaws.com­). The ws.on('close', () => { ... }); event is immediately fired after opening the socket. On the server side I see no indication of a connection attempt.

The host is running on port 80 and I have opened that port. I can connect a node ws client to the host on the EC2, but the Espruino client refuses to connect.

Any ideas on what might be preventing the connection? I found one Stack Overflow post that seems to be describing the same issue, but does not have a resolution and is quite old at this point.

Any help you all could provide will be much appreciated.

Thanks!