UPnP Event error > 412 Precondition Failed

[Chris.G]

Hi,

Actually, I just wanted to use the subscription to be informed in my app when the status has changed in the WiiM device.

const UPnPClient = require('upnp-device-client');

this.#client = new UPnPClient(`http://${this.getStoreValue('address')}:49152/description.xml`);
this.#client.subscribe('AVTransport', (event) => {
this.logDebug(`onInit() > subscribe > ${JSON.stringify(event)}`)
})

The whole code works as expected, until after about 5 minutes a "SUBSCRIBE renewal error" error occurs. After analyzing the error in more detail, it turned out that the UPnP client sends a "Renewing subscription" message to the WIIM Pro (FW: 4.8.614042) and this always responds with the message "412 Precondition Failed".

In my opinion, the message from the client is correct (see screenshots) and I have also looked at other implantations and their message structure is identical.

UPnP-Specs > see Chapter: 4.1.2 Eventing: Renewing a subscription: SUBSCRIBE with SID

UPnP-Client Code:

Request:



Response:

 

[Chris.G]

Hi @WiiM Support

I'm still relatively new here so the question, do you need a support ticket for the problem or is this enough?

THX Chris

 

[Brantome]

Hi @WiiM Support

I'm still relatively new here so the question, do you need a support ticket for the problem or is this enough?

THX Chris

This is more of a user community forum, not a route to support. You should use the settings/ feedback section in the WiiM home app to submit a ticket to WiiM so they can also inspect your device logs for issues.