httpContext.request.cookies和httpContext.response.cookies之间的关系

我一直在尝试用代码清除 HttpContext.Response .

最初,我用这个:

DateTime cookieExpires = DateTime.Now.AddDays(-1);

for (int i = 0; i < HttpContext.Request.Cookies.Count; i++)
{
    HttpContext.Response.Cookies.Add(
        new HttpCookie(HttpContext.Request.Cookies[i].Name, null) { Expires = cookieExpires });
}

但是,如果 OutOfMemoryException 因为 for 循环从不退出-每次将cookie添加到 Response ,它也会添加到“请求”中。

以下方法有效:

DateTime cookieExpires = DateTime.Now.AddDays(-1);

List<string> cookieNames = new List<string>();

for (int i = 0; i < HttpContext.Request.Cookies.Count; i++)
{
    cookieNames.Add(HttpContext.Request.Cookies[i].Name);
}

foreach (string cookieName in cookieNames)
{
    HttpContext.Response.Cookies.Add(
       new HttpCookie(cookieName, null) { Expires = cookieExpires });
}

那么,到底是什么关系 HttpContext.Request.Cookies 和 HttpContext.Response.Cookies ?