New Request Feature to delegate request to other request queues #21163
Description
Let's add a request feature IHttpSysRequestTransferFeature to transfer requests to other Http.Sys request queues.
namespace Microsoft.AspNetCore.Server.HttpSys
{
public class DelegationRule : IDisposable
{
public string QueueName { get; }
public string UrlPrefix { get; }
}
}namespace Microsoft.AspNetCore.Server.HttpSys
{
public interface IHttpSysRequestTransferFeature
{
bool IsTransferable { get; }
void TransferRequest(DelegationRule destination);
}
}namespace Microsoft.AspNetCore.Server.HttpSys
{
public interface IServerDelegationFeature
{
DelegationRule CreateDelegationRule(string queueName, string urlPrefix);
}
}Sample API usage:
namespace Sample
{
public class Startup
{
private DelegationRule _delegationRule;
// This method gets called by the runtime. Use this method to add services to the container.
// For more information on how to configure your application, visit https://go.microsoft.com/fwlink/?LinkID=398940
public void ConfigureServices(IServiceCollection services)
{
}
// This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
public void Configure(IApplicationBuilder app, IHostApplicationLifetime lifetime, IWebHostEnvironment env)
{
if (env.IsDevelopment())
{
app.UseDeveloperExceptionPage();
}
var delegator = app.ServerFeatures.Get<IServerDelegationFeature>();
_delegationRule = delegator.CreateDelegationRule("DefaultAppPool", "http://*:80/");
app.Run(context =>
{
var transferFeature = context.Features.Get<IHttpSysRequestTransferFeature>();
transferFeature.TransferRequest(_delegationRule);
return Task.CompletedTask;
});
lifetime.ApplicationStopped.Register(() => _delegationRule.Dispose());
}
}
}