[opensource-dev] ViewerAsset cap

[Chaser Zaks]

Let me try that again, I've never replied to mailing lists before and I 
THINK I am doing it correctly this time.

There doesn't appear to be an official list of asset types supported by 
the asset cdn. I know that indra/llcommon/llassettype.cpp defines the 
asset type names in LLAssetDictionary::LLAssetDictionary() under "TYPE 
NAME", and "CAN FETCH" seems to relate to if it can fetch it over HTTP(I 
could be wrong though). At the moment the following seem to supported:

  * texture
  * sound
  * landmark
  * clothing
  * bodypart
  * animatn
  * gesture
  * mesh
  * settings (EEP environment, but is called "Settings blob", so may
    have expanded use in the future)

These can also be accessed via this URL format: 
http://<cap_url>/<asset_id>.<asset_type>.

Notecards (sadly) appear to be off the table, at least for now, 
according to https://jira.secondlife.com/browse/BUG-134114. I'd assume 
that will include lsltext. So that leaves:

  * callcard - Handled by AIS and not really needed via HTTP. IIRC this
    is a meta asset, it just is a pointer to a avatar.
  * script - Legacy script, either LSL bytecode(unneeded by viewer) or
    LSL text(see why notecards were rejected).
  * object - No need for the viewer to download this.
  * category - Handled via AIS.
  * lslbyte - No need for the viewer to get this unless client side
    scripting is added which is unlikely.
  * txtr_tga - Unused.
  * snd_wav - Unused.
  * img_tga - Unused.
  * jpeg - Unused.
  * simstate - Will likely never ever be sent to the viewer unless in
    god mode.
  * link - Handled via AIS.
  * link_f - Handled via AIS.
  * widget - No idea what this is, appears unused. If it is what I think
    it is(LSL XUI), it might be supported in the future.
  * person - Probably internal agent information, no need for the viewer
    to get this.

On 8/11/19 11:30 AM, Cinder Roxley wrote:
> Greetings on a pleasant Sunday morning!
>
> I am updating Radegast and LibreMetaverse to support HTTP asset 
> fetching via ViewerAsset capability. 
> (https://github.com/cinderblocks/libremetaverse)
>
> I have scoured the wiki for API doc on ViewerAsset, and one does not 
> exist publicly. I have gotten most of it to work, but I need to know 
> what exactly is and is NOT supported. It appears textures, mesh, 
> sound, animations, landmarks, do indeed work, and this seems to cover 
> the bulk of what was obsoleted and removed.
>
> However, the viewer code would suggest any asset type should be 
> downloadable, but when I attempt to use the scheme GET 
> http://<cap_url>/?<asset type>_id=<asset id> notecard, lsltext, and 
> other asset types return “Invalid Syntax”.
>
> So my question is, what asset types are supported? Is migration to 
> HTTP ongoing? eg. Will notecards and scripts be moved to the 
> capability away from UDP? If so, I will simply handle the error code 
> and fallback. If there’s no plan to move them, I won’t bother with 
> that and leave fetching on UDP for unsupported types.
>
>
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-- 
Kyler "Félix" Eastridge
Softhyena.com
78 Princess CT. 42701
Elizabethtown, Kentucky, U.S.A.

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