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I have a number of HTTP triggered Azure Function apps that do not time out when in production. However, when I want to debug them by stepping through the code (in Visual Studio 2022), slowly and patiently examining variable values etc., I am often unable to complete the process because the call times out.

I know that you can increase the production timeout to 10 minutes, but I would like to increase the timeout locally when I run them and I cannot find a way of doing that.

It does not appear to be an option to add an increased timeout to the local.settings.json (unlike the host.json which runs in production).

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1 Answer 1

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-1

You can set the functionTimeout option in the host.json file.

The host.json affects also the local development.

As described in the host.json reference for functionTimeout you can set it to:

{
    "functionTimeout": "-1"
}
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3 Comments

I don't believe that this is correct. host.json only runs in production. It does not affect local running of a function. (I have tried this myself and it times out but also the documentation says that local.settings.json should be used - learn.microsoft.com/en-us/azure/azure-functions/…)
I also tested it locally with a timeout of 10 seconds in the host.json file and the function timed out after 10 seconds. The documentation also says the following: host.json: This file provides a way for you to configure the Functions host. These settings apply both when running locally and in Azure. For more information, see host.json reference. You can find this here docs.azure.cn/en-us/azure-functions/…
It is strange that there is conflicting documentation. In any event, I have never managed to get this to work with -1 so that it does not timeout. I have never tested with 10 seconds because I am not interested in ten seconds. I am interested in it not timing out while debugging.

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