[QUERY] Clarification on Communication Services (Chat) rate limits and SDK usage

[ErikAndreas]

Library name and version

Azure.Communication.Chat 1.3.0

Query/Question

Using AsyncPageable<ChatMessage> messages = chatThreadClient.GetMessagesAsync() (and await'ing a foreach over messages) causes the underlying SDK to make several REST api calls to the service (number of messages / pageSize) - are each of these requests included in the service rate limits (as described at https://learn.microsoft.com/en-us/azure/communication-services/concepts/service-limits#rate-limits-1)?

It seems it is not possible to set the pageSize if requesting .AsPages() (the following has no effect)

AsyncPageable<ChatMessage> messages = chatThreadClient.GetMessagesAsync();
await foreach (var page in messages.AsPages(pageSizeHint: 10))

and the pageSize seems to be fixed at 6 - this would quickly exhaust the rate limits if each underlying page request is counted in the rate limit? https://learn.microsoft.com/en-us/azure/communication-services/concepts/service-limits#size-limits-1 states 200 as limit for "Page size - ListMessages" which could (should?) be interpreted as it is at least possible to set a page size in this context?

e.g., if there are 50 messages in a thread, calling

AsyncPageable<ChatMessage> messages = chatThreadClient.GetMessagesAsync();
await foreach (var m in messages)

would actually mean 9 calls have been made (50/6 = 9) and counted to the service limit rate for list chat messages on that thread?

Environment

azure functions in azure on dotnet-isolated-8

[github-actions]

Thank you for your feedback. Tagging and routing to the team member best able to assist.

[ErikAndreas]

Note, we have a Support Quota request on ACS related to hitting a service rate limit and getting 429 replies. We've established it's requests to GetReadReceiptsAsync but we don't understand why/how we're hitting a limit. TrackingID could be provided if helpful/efforts should be synched.

[ErikAndreas]

Any clarification here would be helpful since we're affected by these service rate limits. Understanding how the rate limits are working would be essential to possible actions on our end.