Register HttpPlugin for file:// for use in eg. electron

[cromefire]

Have you read the FAQ and checked for dublicates?: yes

What version of Shaka Player are you using: jscdn from about one month ago

Can you reproduce the issue with our latest release version: Unless someone implemented it, no and I don't think so, but I don't tested it.

Can you reproduce the issue with the latest code from master: same as above

Are you using the demo app or your own custom app: A custom app

If custom app, can you reproduce the issue using our demo app: I can't test it in the demo app, because I use local files (but on a web server every thing works fine)

What browser and OS are you using: Electron with node v8 on Ubuntu artful

What are the manifest and license server URIs: it is a local file generated by Shaka packager from an mp4, it has no protection

What did you do?
I loaded the locally stored manifest (electron seemed to make file:// from it)

What did you expect to happen?
Shaka loads the manifest

What actually happened?
Shaka says, it can't load the manifest (1000)

Edit

Shaka doesn't know by default how to handle file:// requests as use in for example electron. Please register it by default.

[theodab]

A 1000 error is UNSUPPORTED_SCHEME. That means that we have no network plugin registered for the "file" scheme. I think our XMLHttpRequest plugin would work for it (assuming CORS doesn't become a problem, of course).

Try running this code when launching your app:
shaka.net.NetworkingEngine.registerScheme('file', shaka.net.HttpPlugin, shaka.net.NetworkingEngine.PluginPriority.FALLBACK);
That will register the XMLHttpRequest plugin to also handle file:// requests. Hope that helps.

[cromefire]

I currently have some minor issues with my application, but it seems to be working.
How about registering it by default?

[cromefire]

If anyone tells me, where the registering happens, I can do a PR.

[chrisfillmore]

@cromefire take a look at http_plugin, at the bottom:

shaka.net.NetworkingEngine.registerScheme('http', shaka.net.HttpPlugin);
shaka.net.NetworkingEngine.registerScheme('https', shaka.net.HttpPlugin);

[theodab]

I have a CL for that change waiting on review.

[theodab]

Ok, we had a discussion about this internally, and decided to not make this an official part of Shaka Player. Browsers are our primary target, not Electron, and supporting requests to file:// would be inappropriate in a browser environment.
Instead, I will make an entry in the FAQ about this issue.

[joeyparrish]

The short version is: you can add this at the application level with one line after loading the Shaka library:

shaka.net.NetworkingEngine.registerScheme('file', shaka.net.HttpPlugin);

We aren't doing this in the library because file: URIs are not accessible from web pages in a browser. @theodab will update the FAQ with this info.

[joeyparrish]

Cherry-picked to v2.3.1.

[joeyparrish]

Cherry-picked for v2.2.10.

[theodab]

Note that, when #829 is out, the solution previously presented will stop working, as the XHR-based HttpPlugin now has a new name. At that point, you will want to instead use:

shaka.net.NetworkingEngine.registerScheme('file', shaka.net.HttpXHRPlugin);

#829 will also change the FAQ entry to match.