public class CustomFilter : IHubFilter
{
public async ValueTask<object> InvokeMethodAsync(
HubInvocationContext invocationContext, Func<HubInvocationContext, ValueTask<object>> next)
{
Console.WriteLine($"Calling hub method '{invocationContext.HubMethodName}'");
try
{
return await next(invocationContext);
}
catch (Exception ex)
{
Console.WriteLine($"Exception calling '{invocationContext.HubMethodName}': {ex}");
throw;
}
}
// Optional method
public Task OnConnectedAsync(HubLifetimeContext context, Func<HubLifetimeContext, Task> next)
{
return next(context);
}
// Optional method
public Task OnDisconnectedAsync(
HubLifetimeContext context, Exception exception, Func<HubLifetimeContext, Exception, Task> next)
{
return next(context, exception);
}
}