在 .net core 1 中使用会话

我正在尝试在 .net core webapp 中启用会话。我已尝试按照此处的文档进行操作。但问题是会话没有得到持久化。每个新请求都会生成新的会话 ID，即使先前的请求已在会话中存储了某些内容。此外，我在开发工具中看不到任何 cookie。

引用的dll

"Microsoft.AspNetCore.Session": "1.1.1",
"Microsoft.Extensions.Caching.Memory": "1.1.1"

我的启动文件看起来像这样

public void ConfigureServices(IServiceCollection services)
{
    // Add framework services.
    services.AddMvc(options => { options.Filters.Add(new RequireHttpsAttribute()); });

    // Add services needed for sessions
    services.AddSession(options =>
    {
        options.IdleTimeout = TimeSpan.FromMinutes(10);
    });

    // Add in-memory distributed cache
    services.AddDistributedMemoryCache();

    // initialising other services, authentication and authorization policies
}

public void Configure(IApplicationBuilder app, IHostingEnvironment env, ILoggerFactory loggerFactory)
{
    // enable session before uisng it in pipeline
    app.UseSession();

    // setting custom user middleware
    app.UseUserMiddleware();

    // set up the mvc default route
    app.UseMvc(routes => { routes.MapRoute("default", "myDefaultRoute"); });

    // adding few other middlewares

} 

我在我的控制器中设置和访问会话值是这样的

public class MyController : Controller
{
    private const string Key = "someKey";

    public async Task<ResponseModel> Get()
    {
        var id = HttpContext.Session.GetInt32(Key);
        return new ResponseModel(await _myService.GetAsync(id));
    }

    public async Task Set([FromBody] RequestModel request)
    {
        var id = await _myService.GetAsync(request.id);
        HttpContext.Session.SetInt32(Key, id);
    }
}