在 ASP.Net Core 2.0 中,我试图在自定义中间件中验证传入的请求标头。
问题是我不知道如何提取所有键值对标头。我需要的标头存储在受保护的属性中
protected Dictionary<string, stringValues> MaybeUnknown
到目前为止,我的中间件类看起来像这样:
public class HeaderValidation
{
private readonly RequestDelegate _next;
public HeaderValidation(RequestDelegate next)
{
_next = next;
}
public async Task Invoke(HttpContext httpContext)
{
IHeaderDictionary headers = httpContext.Request.Headers; // at runtime headers are of type FrameRequestHeaders
// How to get the key-value-pair headers?
// "protected Dictionary<string, stringValues> MaybeUnknown" from headers is inaccessbile due to its protection level
// Casting headers as Dictionary<string, StringValues> results in null
await _next.Invoke(httpContext);
}
}
我的目标是提取所有请求标头,而不仅仅是一些我必须知道特定键的选定标头。