/// <summary>
/// Processes this instance.
/// </summary>
public void Process()
{
UriHandlerStartedEventArgs startedEventArgs = new UriHandlerStartedEventArgs(Element);
OnStarted(startedEventArgs);
if (startedEventArgs.Cancel)
return;
string hash = null;
string content = null;
Uri redirect = null;
Stopwatch stopwatch = new Stopwatch();
// send a found event on a redirect location in the header
if (Uri.TryCreate(_response.Headers[HttpResponseHeader.Location], UriKind.RelativeOrAbsolute, out redirect))
OnUriFound(new UriFoundEventArgs(_element.BaseUri, redirect));
stopwatch.Start();
using (Stream responseStream = _response.GetResponseStream())
{
using (StreamReader reader = new StreamReader(responseStream))
{
content = reader.ReadToEnd();
hash = content.ToHashString("SHA1");
// remove all line breaks for data matching
string matchData = content.Replace('\n', ' ');
MatchCollection uriMatches = UriExpression.Matches(matchData);
foreach (Match match in uriMatches)
{
if (match.Success)
{
Uri uri;
if (Uri.TryCreate(match.Groups["url"].Value, UriKind.RelativeOrAbsolute, out uri))
OnUriFound(new UriFoundEventArgs(_element.RequestedUri, uri));
}
}
}
responseStream.Close();
}
stopwatch.Stop();
OnFinished(new UriProcessingFinishedEventArgs(Element, _response, _related.ToArray(), hash, content, stopwatch.Elapsed));
}
/// <summary>
/// Raises the <see cref="E:Started"/> event.
/// </summary>
/// <param name="e">The <see cref="System.EventArgs"/> instance containing the event data.</param>
protected virtual void OnStarted(UriHandlerStartedEventArgs e)
{
if (Started != null)
Started(this, e);
}
/// <summary>
/// Handles the Started event of the handler control.
/// </summary>
/// <param name="sender">The source of the event.</param>
/// <param name="e">The <see cref="System.EventArgs"/> instance containing the event data.</param>
private void handler_Started(object sender, UriHandlerStartedEventArgs e)
{
lock (_sync)
{
bool isProcessed = IsProcessed(e.Element);
e.Cancel = isProcessed;
if (!isProcessed)
_processing.Add(e.Element, DateTime.Now);
}
}