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jcrodriguez-dis / moodle-mod_vpl

Virtual Programming Lab for Moodle (Module)
GNU General Public License v3.0
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Unable to connect to remote server #120

Closed utkarshmankad closed 3 years ago

utkarshmankad commented 3 years ago

I tried writing a simple C code on my Moodle (3.10) + VPL (version 2) setup. When I tried running it, it shown a dialog box showing "connecting....." and it vanished after few seconds. That was all. Then I saw into browser console (Edge Version 88.0.705.81 (Official build) (64-bit) ), I got the following error message - WebSocket connection to 'ws://demojail.dis.ulpgc.es/1112565614796046/monitor' failed: Error during WebSocket handshake: Unexpected response code: 404 Can you help me out with this problem ? Also, I am unable to access any resources given on Moodle plugin page.

jcrodriguez-dis commented 3 years ago

Hi utkarsh mankad, if you are using VPL version 2, please update to the last version 3.3.8 or 3.4.0.

This problem is always reproducible?

utkarshmankad commented 3 years ago

Hi utkarsh mankad, if you are using VPL version 2, please update to the last version 3.3.8 or 3.4.0.

This problem is always reproducible?

As suggested, I installed v3.4.0 of the Moodle Plugin, still I am getting the same error, I attaching a small gif reproducing the error. Am I doing something wrong at the initial setup, which I have missed out, sorry the issue can be that lame. Screen-Recording-_3-11-2021-12-48-47-PM_

jcrodriguez-dis commented 3 years ago

You are using uncypher communication with the Jail-server and It seems that something is interfering. To avoid this, try adapting the plugin general configuration switching the WebSocket protocol option to "Always use encrypted (WSS) WebSocket protocol". Notice that then you need a Jail server with trusted cyphered connections.

Captura de pantalla 2021-03-11 083405

utkarshmankad commented 3 years ago

Thank you very much !! I was able to make it work with the change suggested.