Hang (infinite loop, CPU 100%) if the manifest's PSSH tag contains whitespace

[elv-peter]

Environment

• The MPD passes the DASH-IF Conformance Tool on https://conformance.dashif.org/
• The stream has correct Access-Control-Allow-Origin headers (CORS)
• There are no network errors such as 404s in the browser console when trying to play the stream
• The issue observed is not mentioned on https://github.com/Dash-Industry-Forum/dash.js/wiki/FAQ
• The issue occurs in the latest reference client on http://reference.dashif.org/dash.js/ and not just on my page

Steps to reproduce

dash.js hangs if the pssh tag in the manifest has spaces or newlines

good:

<cenc:pssh>AAAANHBzc2gAAAAA7e+LqXnWSs6jyCfc1R0h7QAAABQIARABGgZlbHV2aW8iBmVsdXZpbw==</cenc:pssh>

dash.js hangs forever:

<cenc:pssh>
    AAAANHBzc2gAAAAA7e+LqXnWSs6jyCfc1R0h7QAAABQIARABGgZlbHV2aW8iBmVsdXZpbw==
</cenc:pssh>

Observed behaviour

parsePSSHList in streaming.protection.CommonEncryption never breaks out of its loop because it reads size as 0

Console output

N/A

[dsilhavy]

Please check if #3262 solves your issue. See nightly build (version 3.1.2):
http://reference.dashif.org/dash.js/nightly/samples/dash-if-reference-player/index.html

[elv-peter]

Fixed! Thank you!

I found out that whitespace is significant in XML, so it was avoidable on my part. But sanitizing the XML is still good where possible.