twitch main stream not showing

[alexwykoff]

Domain: https://www.twitch.tv/
Reported issue: Main video is blocked, allowing ads will then show the stream
Issue reported in: v0.13.0 rc7

[lukemulks]

To Do:

• Investigate if issue is present on v0.12.15
• Determine root cause of blocking issue.
• Provide suggested fix to resolve.

[lukemulks]

To Do:

• Investigate if issue is present on v0.12.15
  Confirmed: Issue is present in v.0.12.15

Remaining Items:

• Determine root cause of blocking issue.
• Provide suggested fix to resolve.

[lukemulks]

To Do:

Investigate if issue is present on v0.12.15
Confirmed: Issue is present in v.0.12.15

Determine root cause of blocking issue.
Determined: Twitch.tv is using cloudfront to load a script that detects ad blocking:
https://d2lv4zbk7v5f93.cloudfront.net/esf.js

Provide suggested fix to resolve:
Proposed Fix: I was able to apply a blacklist rule for the URL above that was able to prevent the invocation, while not breaking the remaining cloudfront domain calls in the sequence.

Confirming that when I applied this blacklist/blocking rule, I was able to play the video with blocking shields up, and go from clip to clip on the homepage w/o issue.

Once I removed the rule, behavior went back to blocking the video while Shields were Up.

Blacklist rule that worked:
Protocol: https
Host: *cloudfront.net
Port: *
Path: */esf.js
Query: *

With the blacklist rule applied, this is how the traffic appeared over the wire:

URL https://d2lv4zbk7v5f93.cloudfront.net/esf.js
Status Blocked
Failure Blacklisted GET https://d2lv4zbk7v5f93.cloudfront.net/esf.js - connection dropped

Remaining Items:
If the blacklist rule that I was able to get to work could be applied as a siteHack, this should fully resolve the present issue.

[lukemulks]

FYI - going to migrate the fix here: https://github.com/brave/adblock-lists/blob/master/brave-unbreak.txt

Will update this issue to reflect & close when completed.

[lukemulks]

Migrated fix to: brave/adblock-lists#2

[bbondy]

It's intermittent working so not sure if same fix is applied, will leave this open for @lukemulks to check and see if the new .dat file is helping or not.

Please close brave then clear this:
mac dir:
~/Library/Application\ Support/brave/ABPFilterParserData.dat

Windows dir:
%appdata%\brave\ABPFilterParserData.dat (edited)

Then you'll be able to test it with the new dat file.

[lukemulks]

Thanks @bbondy, The issue was a little intermittent at times as well prior to the update. For example, if I started a session with shields up, I saw the player blocked. However, if I took shields down, reloaded (saw video play), and then put shields back up again, there were some cases where the video would play with shields up, but others where it wouldn't. I suspect a caching element to this, so will try clearing cache and making a few passes. It might be that there are additional calls that are a piece of this anti ad blocking, so will check it all out and confirm or add anything additional here. Thanks!

…

On Jan 26, 2017 8:05 PM, "Brian R. Bondy" ***@***.***> wrote: It's intermittent working so not sure if same fix is applied, will leave this open for @lukemulks <https://github.com/lukemulks> to check and see if the new .dat file is helping or not. Please close brave then clear this: mac dir: ~/Library/Application\ Support/brave/ABPFilterParserData.dat Windows dir: %appdata%\brave\ABPFilterParserData.dat (edited) Then you'll be able to test it with the new dat file. — You are receiving this because you were mentioned. Reply to this email directly, view it on GitHub <#6872 (comment)>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AIkDKPPANdy7LY1i4qx7C0zXyhRCyiRcks5rWWz4gaJpZM4Lu9ns> .

[bbondy]

I'm not certain if the thing we blocked helped or not, maybe it is intermittent and just happened to work when that was blocked?

[lukemulks]

Investigating now. Should have an update soon.

…

On Jan 27, 2017 7:50 AM, "Brian R. Bondy" ***@***.***> wrote: I'm not certain if the thing we blocked helped or not, maybe it is intermittent and just happened to work when that was blocked? — You are receiving this because you were mentioned. Reply to this email directly, view it on GitHub <#6872 (comment)>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AIkDKN1r0naxPJznXm0Vc31h0PXJzUQRks5rWhJUgaJpZM4Lu9ns> .

[lukemulks]

Definitely intermittent. Very strange. Digging in further. So far, I think the update helped, but definitely think there are more pieces involved. Will update here once I get to the bottom of it.