public void ProcessRequest(HttpContext context)
{
HttpRequest Request = context.Request;
HttpResponse Response = context.Response;
byte[] data = null;
string mediaName = "";
int frameId = DataAccess.IntOrZero(Request.QueryString["frame"]);
int contentId = DataAccess.IntOrZero(Request.QueryString["content"]);
try
{
Video video = new Video(frameId);
VideoAlternative va = new VideoAlternative(video, contentId);
if (va.ContentId != 0)
{
data = HttpRuntime.Cache.GetOrAddAbsolute(
va.CacheKey,
() =>
{
Content content = new Content(va.ContentId);
if (content.ContentId == 0)
return null;
mediaName = content.Name;
return content.Data;
},
DateTime.Now.AddMinutes(video.CacheInterval)
);
}
}
catch (Exception ex)
{
throw new HttpException(500, ex.Message);
}
if (data == null)
{
throw new HttpException(404, "File is empty");
}
else
{
string mimeType = null;
try
{
if (null == (mimeType = MimeTypeParser.GetMimeTypeRaw(data)))
{
if (null == (mimeType = MimeTypeParser.GetMimeTypeFromRegistry(mediaName)))
{
if (null == (mimeType = MimeTypeParser.GetMimeTypeFromList(mediaName)))
{
mimeType = "application/octet-stream";
}
}
}
}
catch
{
mimeType = "application/octet-stream";
}
Response.ContentType = mimeType;
Response.AddHeader("Content-Disposition", string.Format(
"attachment; filename=\"{0}\"",
mediaName
));
Response.AddHeader("Content-Length", data.Length.ToString());
}
Response.BinaryWrite(data);
Response.Flush();
}