Incorrectly serving webp when handling multiple requests at same time

[jeroendegroot]

We are getting webp image served in IE when the same image is also served at the same time to a browser which does support webp. I have uploaded a video of this behavior here
Here some additional information:

• Using Dianoga.Strategy.GetMediaStreamSync.config
• Disabled svg
• Using version 4.0.0 and added parameter description="extension" name="extension" to protectedMediaQueryParameters

[kamsar]

WebP support has some known issues. I would recommend turning it off until those are fixed.

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________________________________ From: jeroendegroot <notifications@github.com> Sent: Tuesday, February 26, 2019 1:23:07 AM To: kamsar/Dianoga Cc: Subscribed Subject: [kamsar/Dianoga] Incorrectly serving webp when handling multiple requests at same time (#51) We are getting webp image served in IE when the same image is also served at the same time to a browser which does support webp. I have uploaded a video of this behavior here<https://jeroencdn.blob.core.windows.net/cdn/Dianoga_incorrectly_serving_webp.mp4> Here some additional information: * Using Dianoga.Strategy.GetMediaStreamSync.config * Disabled svg * Using version 4.0.0 and added to protectedMediaQueryParameters — You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub<#51>, or mute the thread<https://github.com/notifications/unsubscribe-auth/AAGU_fk9TJc9hNxpXVKUSEQmtGMvAV1Pks5vRH5rgaJpZM4bRE7g>.

[jeroendegroot]

Update in case this is helpful for someone else. This issue does not occur with the mediacache disabled. WebP provides some big performance improvements in our site. Since a CDN is being used I decided to turn off the media cache. Not the best solution but it ensures we can use WebP.

[alex-nanai]

This one fixed for me by applying protectedMediaQueryParameters as described in:
#49 (comment)

[markgibbons25]

This is now resolved https://github.com/kamsar/Dianoga/releases/tag/5.0.0-beta.1