CDN FAQ

Why am I getting a NO DATA error when uploading files to the CDN?

The error “No Data” when using the Java applet to upload a file greater than 20MB is due to the file size limitations we have in place on the Java applet. Use Proxy FTP to work around this limitation.

Instructions for accessing FTP credentials for CDN may be found here. Please note that users may only access the Proxy FTP from a Bare Metal Server on our network.

How do I stream movies or other media?

There are a variety of methods to stream content via the CDN:


HTTP PROGRESSIVE
HTTP Progressive download uses the HTTP protocol to stream archived media content. As a result, it cannot take advantage of the security features that are available with the RTMP protocol, such as encryption and SWF verification. Additionally, the entire video is downloaded to a user’s computer. As a result of all of these factors, HTTP Progressive Download is more susceptible to piracy than either Live StreamCast or On-Demand Streaming. This method can be used with Flash video or Windows Media files.
 

WINDOWS LIVE STREAMCAST
This method allows you to distribute a live video stream to the CDN and then to browser clients. You can set up the stream to be push or pull, meaning that either the server will “push” the video stream to the CDN for download, or the CDN will “pull” the content from your server when requests for the stream are needed.


WINDOWS ON DEMAND STREAMING
The first step in this process is for a client to request on-demand content from our CDN. This type of request occurs when a media player points to a stream using a player URL that references on-demand content stored on a CDN origin server. (This is not your server, but rather a server on the CDN that has the media uploaded to it previously.)
 

When a client requests on-demand content, a check is performed to find out whether the requested content has already been cached at the POP closest to your client. If it is already there, then the on-demand content is immediately served up to that client. This allows those clients to enjoy even faster on-demand streaming. If the requested Windows media content is not found, the second step for serving on-demand content is for the POP closest to the client to retrieve the requested Windows media content from the CDN origin server.
 

If the requested on-demand content has not been cached, then it will be delivered from the CDN origin server to the POP closest to the client. The stream will be delivered to this POP by leveraging our worldwide network. This allows us to bypass traditional Internet communication routes, which ensures the efficient transmission of your Windows media content and reduced bandwidth load on your server. By default, on-demand content will be cached on that POP. This allows future requests from the region served by this POP to bypass data retrieval from the CDN origin server.

Image files, documents and other static content that you wish to make available can be done so by simply linking to it on your web site. For example, if you wish to put images on the CDN you would use the following code to display it on your site:
/img.jpg alt=”my image” /> This would direct users’ browsers to download the image from the CDN as opposed to directly from your servers.