Problem description
After using the Alibaba Cloud Content Delivery Network, the content returned by accessing an HTML page is not a Content-Type: text/html, but a Content-Type: application/octet-stream, causing the accessing page to become a download.
Cause
When the request does not pass through the Alibaba Cloud Content Delivery Network, it directly specifies the source station to access, and finds that the Response Headers responded by the source station does not respond to Content-Type, so the Alibaba Cloud Content Delivery Network will bring Content-Type: application/octet-stream. 
Solutions
Currently, the Alibaba Cloud Content Delivery Network policy for responding to Content-Type is as follows:
- If the source station responds to Content-Type, the Alibaba Cloud Content Delivery Network follows the Content-Type of the source station.
- If the source station does not respond to Content-Type, the Alibaba Cloud Content Delivery Network will automatically add
Content-Type: application/octet-stream.
At present, the Alibaba Cloud Content Delivery Network cannot automatically respond to the corresponding Content-Type according to the file type when the source station does not respond to Content-Type. It is recommended to modify the source station configuration.
Related topic
Application scope
- CDN
- DCDN