Support requests larger than the default gRPC message length limit of 4 MB

The Dot Net SDK does not support gRPC payloads beyond the default 4 MB.

Allow configuring the max send and receive message length for gRPC

You have to set these gRPC client options. The value provided is in bytes with a default of 4 MB.

grpc.max_send_message_length
grpc.max_receive_message_length

For reference see: https://github.com/dapr/python-sdk/pull/375 https://github.com/dapr/python-sdk/pull/458

EDIT: Actors still appear to be using HTTP. Please verify that the request size limit can be configured for Actors also.

[kendallroden]

Thanks for creating this bernd!

[dale-personal]

@yash-nisar I have confirmed that this is still an issue. I have verified that the HTTP Max Request Size is set to 32 MB in the portal. The key here is that you need to send the request via the .net actor proxy

to reproduce this, create an IActor interface with the following method: Task<byte[]> Foo(byte[] data);

Implementation:

public class MyActor : Actor, IActor { public async Task<byte[]> Foo(byte[] data) { return await Task.FromResult(data); } }

deploy the actor service to an azure container app with dapr enabled. then invoke the actor method from the client with data larger than 4MB:

var proxy = ActorProxy.Create<IActor>(new ActorId(“foo”), nameof(IActor)) var data = new byte[5000000]; _ = proxy.Foo(data); // larger than 4MB fails