Azure Application Gateway
An Azure service that provides a platform-managed, scalable, and highly available application delivery controller as a service.
1,185 questions
Http2 support for app gateway backend pools
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Twan van Beers (NB)
10
Reputation points
We want to deploy a gRPC based webapp but can’t front it with app gateway as that can’t send http2 through to the backend
are there any plans to support this scenario so we can have a scalable https2 based gRPC solution?
Azure Application Gateway
{count} vote
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KapilAnanth-MSFT 49,341 Reputation points Microsoft Employee Moderator2024-08-19T07:06:21.05+00:00 Welcome to the Microsoft Q&A Platform. Thank you for reaching out & I hope you are doing well.
Currently, both Azure Front Door and Application Gateway do not support HTTP2 access to Origin/Backend.
I will check internally if HTTP2 Support is in the Pipeline and get back to you shortly.
Cheers,
Kapil
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Twan van Beers (NB) 10 Reputation points
2024-08-19T11:22:13.8533333+00:00 Thank you! I did find that a self hosted gateway with API management could perhaps work but at a cost of $3 per hour. It seems odd that front end or app gateway can’t support http 2. It isn’t a particularly new standard…?
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KapilAnanth-MSFT 49,341 Reputation points Microsoft Employee Moderator
2024-08-20T04:08:06.42+00:00 Thanks for the info,
Please review the message I have sent you in private messages
Cheers,
Kapil
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Magnus Källman 0 Reputation points2025-02-26T14:50:20.7133333+00:00 @KapilAnanth-MSFT Any reason why this couldn’t be answered publicly? I can see this question on multiple forums and no official answer or roadmap from Microsoft.
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Twan van Beers (NB) 10 Reputation points
2025-02-26T15:00:50.3433333+00:00 I don't see the private message anymore, but I think we talked about it being on the roadmap...?
I've learnt that Front Door does allow HTTP2 to origin in preview now. But still odd that gRPC isn't more widely allowed through the Azure infrastructure components?
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KapilAnanth-MSFT 49,341 Reputation points Microsoft Employee Moderator
2025-02-26T16:20:13.7133333+00:00 @Twan van Beers (NB) , Magnus Källman
Greetings.
As of now, we do not have an ETA on General Availability of HTTP/2 Support for backends in App Gateway .
You can upvote for this feature in Azure feedback forum so it gets more traction from Azure Product team:
- Azure WAF need to support HTTP2 to Origin · Community
- Support HTTP2 between application gateway and backend servers · Community (azure.com)
Twan van Beers (NB), private messages have a retention period of 30 days: All private messages in a conversation are deleted 30 days after the Microsoft moderator sends the first private message.
See : Why can't I view a private message?
Cheers,
Kapil
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Twan van Beers (NB) 10 Reputation points
2025-04-29T09:32:19.6833333+00:00 @KapilAnanth-MSFT Has there been any movement on this? I could have sworn that there was a preview feature in AFD that allowed HTTP2 to origin but can't find it now.
We are blocked from going SaaS in Azure because of a lack of HTTP2 support for a key component. So I'm keen to find a way to unblock that. We are landing in ACA for our application and trying to allow a remote agents to have a gRPC connection to the application
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KapilAnanth-MSFT 49,341 Reputation points Microsoft Employee Moderator
2025-04-30T14:05:44.42+00:00 I have initiated a private message with the details. Please check.
AFAIK - HTTP2 to backend public preview was not announced.
Cheers,
Kapil
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