/// <summary>
/// Main method handling requests to the specified resource.
/// </summary>
/// <param name="o">Current HttpApplication</param>
/// <param name="eventArgs">Current event arguments</param>
public void DistributionModule_OnPreRequestHandlerExecute(object o, EventArgs eventArgs)
{
DateTime start = DateTime.Now;
HttpApplication application = (HttpApplication)o;
HttpContext context = application.Context;
HttpRequest request = context.Request;
HttpResponse response = context.Response;
string urlPath = request.Url.AbsolutePath;
Regex binaryRegex = new Regex(ConfigurationManager.AppSettings["BinaryUrlPattern"]);
if (!binaryRegex.IsMatch(urlPath))
{
LoggerService.Debug("url {0} does not match binary url pattern, ignoring it", urlPath);
return;
}
if (!BinaryFileManager.ProcessRequest(request))
{
LoggerService.Debug("Url {0} not found. Returning 404 Not Found.", urlPath);
//the 404 should be handled by the default handler
return;
}
// if we got here, the file was successfully created on file-system
DateTime ifModifiedSince = Convert.ToDateTime(request.Headers["If-Modified-Since"]);
LoggerService.Debug("If-Modified-Since: " + ifModifiedSince);
DateTime fileLastModified = File.GetLastWriteTime(request.PhysicalPath);
LoggerService.Debug("File last modified: " + fileLastModified);
if (fileLastModified.Subtract(ifModifiedSince).TotalSeconds < 1)
{
LoggerService.Debug("Sending 304 Not Modified");
response.StatusCode = 304;
response.SuppressContent = true;
application.CompleteRequest();
}
// Note: if the file was just created, an empty dummy might still be served by IIS
// To make sure the right file is sent, we will transmit the file directly within the first second of the creation
if (fileLastModified.AddSeconds(1).CompareTo(DateTime.Now) > 0)
{
LoggerService.Debug("file was created less than 1 second ago, transmitting content directly");
response.Clear();
response.TransmitFile(request.PhysicalPath);
}
}
