~15s Delay in startSession

Question

nikos_lapokonstantakis OP

Created 1w

Replies 1

Boosts 1

Participants 2

Hello,

We are experiencing a consistent delay when initiating Apple Pay sessions using the https://apple-pay-gateway.apple.com/paymentservices/startSession endpoint. Below is a detailed overview of our setup and the issue.

Setup

Our web service is hosted in AWS and there is a proxy server between our web service and Apple servers.
We are passing the correct domain in the initiativeContext field of the startSession request.
The .well-known/apple-developer-merchantid-domain-association file is hosted on a different domain, which is also correctly configured and associated with our merchant ID in the Apple Developer portal.

Observed Behavior

When the same request is made from a local development environment, Apple responds immediately (under 1 second).
When the request is made from our AWS-hosted service, Apple responds with a valid session, but only after a consistent ~15-second delay.
The content and response are otherwise identical — only the timing differs.

We would appreciate any insights or suggestions from others who have faced similar behavior or from the Apple Pay team.

Thank you in advance!

Boost

Answer 1

hughdog OP

3d

@nikos_lapokonstantakis

Did you ever figure out a solution?

Having the same problem calling https://apple-pay-gateway-cert.apple.com/paymentservices/merchant using mTLS in my AWS environment.

I'm just using a simple httpclient..

builder.Services.AddHttpClient("ApplePayClient")
    .ConfigurePrimaryHttpMessageHandler(() =>
{
    var handler = new HttpClientHandler
    {
        ClientCertificateOptions = ClientCertificateOption.Manual,
        ClientCertificates = { applePayCertificate }
    };
    return handler;
});

Have no issues on local and struggling to find a solution.

Feel like there's a setting in AWS which is causing an issue but any suggestions would be great.

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