20.57. kb-00056: Troubleshooting Portal WebSockets

20.57.1. Knowledge Base Article: kb-00056

20.57.2. Description

Occasionally the RackN Portal will have connectivity issues due to the self-signed certificates expiring.

When the socket loses connection, a megaphone icon button on the top left will flash red and say “Unable to access DRP”

Clicking this icon will yield the error code and status.

20.57.3. Solution

See additional information for a list of error codes.

The most common and hard to troubleshoot issue is the 1006 - CLOSE_ABNORMAL error. This usually happens when the browser does not show the accept certificate page when the websocket is getting TLS errors.

The easiest fix is to completely close and re-open the browser so the accept certificate dialog can be shown.

20.57.4. Additional Information

List of RFC6455 Web Socket status codes, most of which are never seen or are not used:

  • 1000 - CLOSE_NORMAL - Normal closure

  • 1001 - CLOSE_GOING_AWAY - Server goes down or webpage is navigated away from

  • 1002 - CLOSE_PROTOCOL_ERROR - Endpoint terminates connection due to protocol error

  • 1003 - CLOSE_UNSUPPORTED - DRP or UX sends unsupported data (binary instead of text)

  • 1005 - CLOSED_NO_STATUS - Should never get this, it means no status code was provided

  • 1006 - CLOSE_ABNORMAL - Socket closed without a close control frame - likely due to TLS errors

  • 1007 - Unsupported payload - Sending non-UTC-8 data

  • 1008 - Policy violation - Should never get this, it means the message violates policy

  • 1009 - CLOSE_TOO_LARGE - Happens when a message is too long, the portal should automatically reconnect

  • 1010 - Mandatory extension - Not implemented

  • 1011 - Server error - Server crashed

  • 1012 - Service restart - Server is restarting

  • 1013 - Try again later - Not implemented

  • 1014 - Bad gateway - Not implemented

  • 1015 - TLS handshake fail - Server certificate cannot be verified

20.57.4.1. See Also

20.57.4.2. Versions

This document applies to all versions of Digital Rebar and RackN Portal v1.18+

20.57.4.3. Keywords

ux, portal, websocket, socket, tls, certificate, browser, faq, abnormal, close_abnormal, close

20.57.4.4. Revision Information

KB Article     :  kb-00056
initial release:  Wed Jan 27 11:32:17 CST 2021
updated release:  Wed Jan 27 11:32:17 CST 2021