how could I implement a interceptor at client

[cysharp]

how could I implement a interceptor at client

[neuecc]

I'm using MagicOnion.UnaryHookCallInvoker.
It can handle UnaryCall.

This is sample of our usage.

public class HandleErrorInvoker : UnaryHookCallInvoker
{
    protected override IObservable<TResponse> HandleUnaryCall<TRequest, TResponse>(IObservable<TResponse> source, CallInvocationDetails<TRequest, TResponse> details, Func<Metadata> getTrailers)
    {
        return source
            .Do(_ =>
            {
                // our internal custom logics...
                var metadata = getTrailers();
                long serverTime = 0;
                if (long.TryParse(metadata.GetValue("x-servertime"), out serverTime))
                {
                    Scheduler.MainThread.Schedule(() =>
                    {
                        Grani.Core.SystemClock.SetServerTime(DateTime.FromBinary(serverTime), Time.realtimeSinceStartup);
                    });
                }
            })
            .Catch((Exception ex) =>
            {
                // out custom execption handling
                var next = new Subject<TResponse>();
                Scheduler.MainThread.Schedule(() =>
                {
                    switch (HandleCommonError(ex)) // do custom logic and get result.
                    {
                        case HandleCommonErrorResult.Rethrow:
                            next.OnError(ex);
                            break;
                        case HandleCommonErrorResult.Empty:
                            next.OnCompleted();
                            break;
                        case HandleCommonErrorResult.Never:
                            break;
                    }
                });

                return next;
            });
    }
}

[liiujinfu]

thanks for your advice, but when I tried to do the work, I found the unaryhookinvoker is in the magiconion.unity package, my client is asp.net webapi, should I reference the magiconion.unity? I feel it's not good, I tried to implement unaryhookinvoker by myself, however, some reference code of grpc is internal.

[neuecc]

The hook point of Unary currently of gRPC is obviously small. In the Unity version, we could deal with it by changing it ourselves, but if it is not so, we can not do it.

MagicOnionClient side may set up its own hook point, which may be able to cope with this problem.
I'll think about it.