Get Throttling headers from Graph API C# reqeusts.

Question

Get Throttling headers from Graph API C# reqeusts.

Amit Singh Rawat 731

Hi,

I am using Microsoft Graph API (C#) to traverse SharePoint Environment. As per below document, Microsoft also send usefull information to avoid throttling like Retry-After, RateLimit etc.

https://learn.microsoft.com/en-us/sharepoint/dev/general-development/how-to-avoid-getting-throttled-or-blocked-in-sharepoint-online

When I execute below or similar query. I am not getting these details in response to Graph API request.

var searchQuery = configuration.GetValue<string>("SiteToScan");
                var responseSites = await graphClient.Sites.GetAllSites.GetAsync((requestConfiguration) =>
                {
                    requestConfiguration.QueryParameters.Filter = $"webUrl eq '{searchQuery}'";
                });

Anonymous

2023-08-17T06:54:13.7233333+00:00

Thank you for your question.

We are currently looking into this issue and will give you an update as soon as possible.

Thank you for your understanding and support.

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Anonymous

2023-08-17T06:54:13.7233333+00:00

Thank you for your question.

We are currently looking into this issue and will give you an update as soon as possible.

Thank you for your understanding and support.

Answer 1

Anonymous

Hi@ASR

You are using the Microsoft Graph API, not the SharePoint REST API.

The SharePoint REST API will return more restrictive information, such as response headers such as Retry-After, X-SharePointHealthScore, and X-MSDAVEXT_Error.

Microsoft Graph API only returns HTTP status code 429 (Too many requests) and Retry-After response header to indicate the limitation

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Best Regards

Cheng Feng

Amit Singh Rawat 731 Reputation points

2023-08-17T09:00:17.27+00:00

How should I capture "HTTP status code" and "Retry-After response header" then?
Anonymous

2023-08-23T07:24:05.7433333+00:00
HI

When using the Microsoft Graph API to traverse a SharePoint environment, you may not always receive the Retry-After or RateLimit headers in the response. These headers are only included in the response when the request has been throttled due to exceeding the rate limits. If your request is not being throttled, then these headers will not be present in the response.

If you are using the Microsoft Graph SDK for .NET, you can capture the HTTP status code and Retry-After response header by checking for a ServiceException when executing a request. The ServiceException contains information about the HTTP status code and response headers, including the Retry-After header if it is present.

Here is an example of how you can capture the HTTP status code and Retry-After response header when executing a request using the Microsoft Graph SDK for .NET:

try { // Execute your request here } catch (ServiceException ex) { // Check if the request was throttled if (ex.StatusCode == HttpStatusCode.TooManyRequests) { // Get the Retry-After header value var retryAfter = ex.ResponseHeaders.RetryAfter; // Calculate the delay based on the Retry-After header value var delay = retryAfter.Delta.GetValueOrDefault(TimeSpan.FromSeconds(10)); // Wait for the specified delay before retrying the request await Task.Delay(delay); } }

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Get Throttling headers from Graph API C# reqeusts.

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