# X-Accel-Redirect issues - Image of 0 size **URL:** \ **Category:** NGINX\ **Created:** [August 25, 2010, 8:37am UTC](https://www.ruby-forum.com/t/x-accel-redirect-issues-image-of-0-size/193832 "2010-08-25T08:37:39Z")\ **Posts on this page:** 4\ **Page:** 1
**Author:** ![habodal](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/h/a6a055/32.png) [@habodal](https://www.ruby-forum.com/u/habodal)\ **Post date:** [August 25, 2010, 8:37am UTC](https://www.ruby-forum.com/t/x-accel-redirect-issues-image-of-0-size/193832/1 "2010-08-25T08:37:39Z")
Hello, I am trying to use the X-Accel-Redirect header feature of Dokuwiki. However, when attempting to access images, for example, I receive an image of zero size which the browsers displays as a URL. I believe my nginx configuration is to blame. Nginx config: server { ``` listen 80; server_name dev; root /var/www/public_html/dev/public; index index.php; autoindex on; location ~ \.php$ { include /usr/local/etc/nginx/fastcgi.conf; fastcgi_pass unix:/tmp/php-fpm.sock; fastcgi_index index.php; fastcgi_ignore_headers X-Accel-Redirect; fastcgi_pass_header X-Accel-Redirect; } ``` location ^~ /doku/data { internal; alias /wiki/data; } } When I attempt to access [http://dev/doku/lib/exe/fetch.php?cache=&media=image.jpg](http://dev/doku/lib/exe/fetch.php?cache=&media=image.jpg) (on filesystems as /var/www/public\_html/dev/public/doku/data/media/image.jpg) the browser displays the following text with an image mimetype: [http://dev/doku/lib/exe/fetch.php?cache=&media=image.jpg](http://dev/doku/lib/exe/fetch.php?cache=&media=image.jpg) The headers received are: Server: nginx Date: Wed, 25 Aug 2010 06:06:42 GMT Content-Type: image/jpeg Expires: Thu, 26 Aug 2010 06:06:42 GMT Cache-Control: public, proxy-revalidate, no-transform, max-age=86400 Pragma: public Last-Modified: Mon, 23 Aug 2010 17:01:22 GMT Content-Disposition: inline; filename=“image.jpg”; X-Accel-Redirect: /var/www/public\_html/dev/public/doku/data/media/image.jpg 200 OK In the access log the request is shown as: “GET /doku/lib/exe/fetch.php?cache=&media=image.jpg HTTP/1.1” 499 0 “[http://dev/doku/lib/exe/detail.php?id=start&media=image.jpg](http://dev/doku/lib/exe/detail.php?id=start&media=image.jpg)” “GET /doku/lib/exe/fetch.php?cache=&media=image.jpg HTTP/1.1” 200 5 “[http://dev/doku/lib/exe/detail.php?id=start&media=image.jpg](http://dev/doku/lib/exe/detail.php?id=start&media=image.jpg)” I see the X-Accel-Redirect and correct mimetype headers are sent. Along with the image not displaying, shouldn’t X-Accel-Redirect header read: X-Accel-Redirect: /wiki/data/media/image.jpg due to the alias directive? What am I doing wrong? Posted at Nginx Forum: > **[X-Accel-Redirect issues - Image of 0 size](https://forum.nginx.org/read.php?2,123375,123375#msg-123375)** > > Hello, I am trying to use the X-Accel-Redirect header feature of Dokuwiki. However, when attempting to access images, for example, I receive an image of zero size which the browsers displays as a URL. I believe my nginx configuration is to blame.... ---
**Author:** ![habodal](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/h/a6a055/32.png) [@habodal](https://www.ruby-forum.com/u/habodal)\ **Post date:** [August 25, 2010, 10:22am UTC](https://www.ruby-forum.com/t/x-accel-redirect-issues-image-of-0-size/193832/2 "2010-08-25T10:22:26Z")
Hello! On Wed, Aug 25, 2010 at 02:35:22AM -0400, habodal wrote: > ``` > fastcgi_pass unix:/tmp/php-fpm.sock; > fastcgi_index index.php; > fastcgi_ignore_headers X-Accel-Redirect; > fastcgi_pass_header X-Accel-Redirect; > > ``` Your fastcgi\_ignore\_headers and fastcgi\_pass\_header instruct nginx to ignore X-Accel-Redirect header completely (i.e. do not handle it) and pass it back to client. It’s probably not what you want. Just remove these two directives. Maxim D. ---
**Author:** ![habodal](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/h/a6a055/32.png) [@habodal](https://www.ruby-forum.com/u/habodal)\ **Post date:** [August 25, 2010, 6:03pm UTC](https://www.ruby-forum.com/t/x-accel-redirect-issues-image-of-0-size/193832/3 "2010-08-25T18:03:13Z")
Hello! On Wed, Aug 25, 2010 at 11:40:07AM -0400, habodal wrote: > host: “dev”, referrer: > "[http://dev/doku/lib/exe/detail.php?id=start&media=image.jpg](http://dev/doku/lib/exe/detail.php?id=start&media=image.jpg) > > The webroot, /var/www/public\_html/dev/public/ appears twice in the > file’s path. How can I prevent this? Looks like you return file path in X-Accel-Redirect. You should return uri instead, i.e. X-Accel-Redirect: /docu/data/media/image.jpg Maxim D. ---
**Author:** ![habodal](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/h/a6a055/32.png) [@habodal](https://www.ruby-forum.com/u/habodal)\ **Post date:** [August 25, 2010, 5:41pm UTC](https://www.ruby-forum.com/t/x-accel-redirect-issues-image-of-0-size/193832/4 "2010-08-25T17:41:32Z")
Thank you, I guess I misunderstood those directives’ functions. After removing them, now I receive a 404 when attempting to access the image. The error log shows: [error] 1109#0: \*40 open() “/var/www/public\_html/dev/public/var/www/public\_html/dev/public/doku/data/media/image.jpg” failed (2: No such file or directory), client: 192.168.1.121, server: dev, request: “GET /doku/lib/exe/fetch.php?cache=&media=image.jpg HTTP/1.1”, upstream: “fastcgi://unix:/usr/local/var/run/php-fpm.sock:”, host: “dev”, referrer: "[http://dev/doku/lib/exe/detail.php?id=start&media=image.jpg](http://dev/doku/lib/exe/detail.php?id=start&media=image.jpg) The webroot, /var/www/public\_html/dev/public/ appears twice in the file’s path. How can I prevent this? Posted at Nginx Forum: > **[Re: X-Accel-Redirect issues - Image of 0 size](https://forum.nginx.org/read.php?2,123375,123601#msg-123601)** > > Hello, I am trying to use the X-Accel-Redirect header feature of Dokuwiki. However, when attempting to access images, for example, I receive an image of zero size which the browsers displays as a URL. I believe my nginx configuration is to blame....