Asp.net 图像随机给出 401 未经授权的错误
我使用 Asp.net、IIS 6 和 cdn 来提供图像。 我在加载网站中的图像时遇到问题。图像位于虚拟文件夹下。每次刷新浏览器时，某些图像都会出现 401 未经授权的错误。 （每次刷新时出现 401 错误的图像和显示的图像数量都会有所不同。） 我很难解决这个问题。任何帮助都会受到热烈欢迎。
亲切的问候。
PS：我还使用负载均衡器在两台服务器之间分配流量。其中一台服务器具有实际文件和它们的虚拟文件夹。另一台服务器有虚拟文件夹，显示有文件的服务器的路径和 IP。我尝试通过每个服务器使用网站，但它们都有相同的问题。
这是标题；
响应：
HTTP/1.1 401 Unauthorized
Content-Length: 1608
Content-Type: text/html
Server: Microsoft-IIS/6.0
Date: Thu, 28 Apr 2011 14:38:55 GMT
请求
GET /img/blog/2011%2f4%2f4.png HTTP/1.1
Host: cdn.***.com
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.0; en-GB; rv:1.9.2.16) Gecko/20110319 Firefox/3.6.16 ( .NET CLR 3.5.30729)
Accept: image/png,image/*;q=0.8,*/*;q=0.5
Accept-Language: en-gb,en;q=0.5
Accept-Encoding: gzip,deflate
Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7
Keep-Alive: 115
Connection: keep-alive
Referer: http://www.***.com/Blog
I am using Asp.net, IIS 6 and cdn for serving images.
I am having a problem with loading the images in my website. images are under a virtual folder. Everytime I hit refresh of the browser, some of the images gives 401 unauthorized error. (images and number of images displayed which gives 401 error differs in every refresh.)
I am having hard time to solve this problem. Any help will be welcomed a lot.
Kind Regards.
PS: I am also using a load balancer to distribute traffic among two servers. One of the servers has actual files and a virtual folder for them. The other server has virtual folder which shows the path and ip of the server which has files. I tried using website via each server but they both have the same problem.
Here are the headers;
Response:
HTTP/1.1 401 Unauthorized
Content-Length: 1608
Content-Type: text/html
Server: Microsoft-IIS/6.0
Date: Thu, 28 Apr 2011 14:38:55 GMT
Request
GET /img/blog/2011%2f4%2f4.png HTTP/1.1
Host: cdn.***.com
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.0; en-GB; rv:1.9.2.16) Gecko/20110319 Firefox/3.6.16 ( .NET CLR 3.5.30729)
Accept: image/png,image/*;q=0.8,*/*;q=0.5
Accept-Language: en-gb,en;q=0.5
Accept-Encoding: gzip,deflate
Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7
Keep-Alive: 115
Connection: keep-alive
Referer: http://www.***.com/Blog
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添加以下用户的权限到该虚拟镜像文件夹
添加上述权限后，请检查401错误是否仍然存在？
Add permission for following users to that virtual image folder
After adding the above permission please check whether 401 error is still there or not?
请将站点图像文件夹的安全权限设置为iis_user或所有人，并授予其完整权限，此错误将永久解决。
在我的一个网站上尝试这个，我遇到了同样的问题，通过使用这种方式我解决了这个错误......
please set the security permission of your site images folder to iis_user or everyone and give its full rights and this error resolved forever.
Try this in my one site i got same problem and by using this way i resolved this error....
如果问题图像随着每次刷新而变化，则可能不是权限问题 - 听起来像是正在进行某种锁定。您是否已打开索引服务或正在运行 AV 解决方案？
If the problem images change with each refresh, it's probably not a permissions issue - sounds instead like there is some kind of locking going on. Do you have the indexing service turned on, or an AV solution running?
您调查过 IIS 日志吗？几乎 100% 确定，这与虚拟文件夹的访问级别有关，并且您在打开目标位置时可能需要设置特殊凭据。
如何启用 IIS 6 日志记录？ 此处。
如何分析IIS日志？ 此处。
Have you investigate IIS logs? This is, almost 100% sure, related with the access level the virtual folder and you may need to set special credentials when opening the target location.
How to enable IIS 6 logging? Here.
How to analyze IIS logs? Here.
确保 MIME 类型适用于您在 IIS 中配置的图像扩展。
Make sure the mime-types are for the extensions you use of images are configures in your IIS.