Http response streaming stops (timeout?) at 30 minutes - Azure Container App

Tamás Pollák [CELUM] 0

I have an Azure Container App (Node.js + Express) with an http endpoint. It creates a zip file and streams it to the client on the fly. (Fetching files sequentially from an upstream service and streaming them as entries to the zip)
Meaning it returns a response immediately, but the response body stream remains open until all files are written to it.

When the process takes a long time then exactly at 30 minutes the streaming stops. It's not a timeout in the Node.js server, nor a client disconnect, seems like some kind of timeout in the Azure infrastructure. I did not configure any load balancer or similar component, it is just a plain container app.

Does someone have a tip what might be the issue here?

Thank you in advance,
Tamás

Mike Urnun 9,781 Reputation points Microsoft Employee

2023-11-15T01:18:59.3+00:00

@Tamás Pollák [CELUM] I'll look deeper but the issue sounds a lot like the following: https://github.com/microsoft/azure-container-apps/issues/986 Do you get any error messages in Portal?
Tamás Pollák [CELUM] 0 Reputation points

2023-11-15T07:43:18.8466667+00:00

Hello Mike,
No, no error messages in the system logs (or any warning which might be related).
Yes, it's feels similar indeed because of the 30 minutes, although in my case it is not a job.

Thank you
Mike Urnun 9,781 Reputation points Microsoft Employee

2023-11-21T03:17:51.89+00:00
Hi @Tamás Pollák [CELUM] - Sorry for the delay in my responses. If you're still observing this timeout issue, could you send us an email at azcommunity@microsoft.com with the following details?

URL of this thread

Resource ID for your ACA

Container App name

Timeframe in UTC on when the observed issue occurred

Be sure to put "attn:murnun" in the subject line of your email, and I look forward to your reply.
Tamás Pollák [CELUM] 0 Reputation points

2023-11-23T10:50:26.5233333+00:00

Hello @Mike Urnun ,
I have just sent the email with the details.

Thank you.
Mike Urnun 9,781 Reputation points Microsoft Employee

2023-11-28T21:10:03.4333333+00:00

Hello @Tamás Pollák [CELUM] - Thanks for sending the email & sharing additional details. I'll investigate and get back to you with my findings via email.
Yves Alexandre Cadet 0 Reputation points

2024-05-09T06:46:04.9966667+00:00

Hello guys,
I found the answer of Francisco here very helpful (and would invite you to check the Ingress' port):
https://video2.skills-academy.com/en-us/answers/questions/929619/azure-container-app-revision-fails-when-scaling-is?comment=question#newest-question-comment

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Http response streaming stops (timeout?) at 30 minutes - Azure Container App