Updating pjsip settings creates multiple duplicate key-values in database

When updating certain fields on the pjsip settings page, additional key-value pairs are created in the database, rather than updating the existing ones.

When reloading the page, it shows the first instance of the relevant key-value pairs.

When applying the configuration, it uses the first instance of the relevant key-value pairs.

Therefore, the GUI cannot be used to change these values.

To replicate:

• Goto SIP Settings (chan_pjsip) - /admin/config.php?display=sipsettings
• Change any of these values:
  • Transports (udp, tcp, tls, ws, wss)
  • Endpoint Identifier Order
  • Any of the specific transport settings (e.g. UDP / port to listen to)
• Click SUBMIT and then "Apply Config"
• Navigate away from the page and back again to force the script to reload the values from the database
• The previous values will be displayed - the updated values are not shown
• Examine the contents of the relevant pjsip*.conf files in /etc/asterisk
• The file timestamps are updated, but the values are the previous values
• Use an SQL Browser to inspect table kvstore_Sipsettings
• There will be multiple entries using the keys "binds", "pjsip.identifiers.order", "pjsip_identifiers_order" etc. with varying values
• There may be more fields affected than this - I didn't exhaustively test.

Workaround:

• In the SQL browser, delete the duplicate key-value records and create only one key-value pair with the desired value.

I don't believe this is the intended behaviour of updating values, so raising this is a bug.

Note - this is on FreePBX 15.0.16.49, which isn't available as a version in the Affects Version field.