Sumit - Webhooks | Stripe Developers | Page 1

twilit geode Nov 24, 2021, 10:42 PM

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Hello! That error usually indicates you haven't passed the headers to the ConstructEvent function properly. Can you share the code that calls that function?

warm path Nov 24, 2021, 10:43 PM

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sure thing. 1 sec

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var strStripeRequest = OperationContext.Current.RequestContext.RequestMessage.GetBody<Stream>();
var json = await new StreamReader(strStripeRequest).ReadToEndAsync();

try
{
var stripeEvent = EventUtility.ConstructEvent(json, System.Web.HttpContext.Current.Request.Headers["Stripe-Signature"], ConfigurationManager.AppSettings["ClientSecret"].ToString());
}
catch(Exception e)
{
}

twilit geode Nov 24, 2021, 10:48 PM

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If you log the value of System.Web.HttpContext.Current.Request.Headers["Stripe-Signature"] is it what you expect (the signature)?

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Also, how are you testing the code? Which event are you triggering?

warm path Nov 24, 2021, 10:50 PM

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I do.
This is one of the examples:
t=1637684898,v1=220cc3175c9511b1a1abca8488b4cc69a13d88a1ac56ca2695327b719b022c75,v0=fd11682662d95115d76fcd9520909c26c5288a89c71a960e71863e895f178a4e

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The selected event for the webhook is invoice.paid

twilit geode Nov 24, 2021, 10:51 PM

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That certainly looks correct. How are you triggering the invoice.paid event?

warm path Nov 24, 2021, 10:52 PM

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For now, I am"Resending" a past invoice.paid event to see if it is able to do any validations

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but the it throws the missing signature exception

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my hunch is the Request body is not in an expected format

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But I don't see any other way I could fetch the request object

twilit geode Nov 24, 2021, 10:53 PM

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Usually body issues will raise a different error, but it's a possibility...

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Hang on, let me check the .NET SDK code to see when that error is raised...

warm path Nov 24, 2021, 10:54 PM

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Thank you sir

twilit geode Nov 24, 2021, 10:58 PM

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So the code in the SDK that throws the error is here: https://github.com/stripe/stripe-dotnet/blob/7b62c461d7c0cf2c9e06dce5e564b374a9d232e0/src/Stripe.net/Services/Events/EventUtility.cs#L155

That error is only thrown if the v1 signature is not present, but it is present in the value you shared above.

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🤔

warm path Nov 24, 2021, 10:59 PM

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interesting

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I'll check this.
Can you tell me what's the best way to fetch the stripe request body in a REST endpoint, which is an WCF "Operation Contract" ?

twilit geode Nov 24, 2021, 11:01 PM

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I'm not sure what 'WCF "Operation Contract"' means, is that a .NET specific thing?

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Maybe this? https://stackoverflow.com/questions/1287802/access-request-body-in-a-wcf-restful-service

Stack Overflow

Access Request Body in a WCF RESTful Service

How do I access the HTTP POST request body in a WCF REST service?

Here is the service definition:

[ServiceContract]
public interface ITestService
{
[OperationContract]
[WebInvoke(Method =...

warm path Nov 24, 2021, 11:10 PM

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umm, I seem to be using that right. This is like never ending research for me. haha. Thank you though. I might reach out later again if I make any progress ahead of this error

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