Configure request timeout for WebApi controllers

Question

I'm using async methods in my WebAPi controllers:

public async Task<HttpResponseMessage> SampleMethod(int subscriptionNumber, DateTime departureDate)
{
    // [...]
}

How do I configure the request timeout? The operation can take up to a couple of minutes and I have to make sure that the request do not timeout.

In MVC there is an attribute called [AsyncTimeout]. Are there an equivalent in WebApi? Can it be configured globally?

Borys Generalov · Accepted Answer · 2014-05-13 12:23:13Z

7

Good question, I would recommend to handle this from client side - you can always specify timeout settings in your consumer code, even if it is ajax:

$.ajax({
url: "/ajax_json_echo/",
timeout: 1000,
...

answered May 13, 2014 at 12:23

Borys Generalov

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3 Comments

jgauffin Over a year ago

Are you saying that IIS/ASP.NET/WebApi2 do not have any built in timeouts?

Borys Generalov Over a year ago

Yes, they don't have anything so far. WebAPI support cancellation tokens to cancel the operation, so that you can try to use CancellationTokenSource.CancelAfter to achieve that, but as I mentioned - from consuming code

Borys Generalov Over a year ago

Also the following excerpt reveals a bit more why: "The way to cancel HTTP requests is to cancel them on the HttpClient directly. The reason being that multiple requests can reuse TCP connections within a single HttpClient and so you can't safely cancel a single request without possibly affecting other requests as well."

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