public static FavIconDescriptor RequestIcon(string baseUri, IWebProxy proxy, ICredentials credentials)
{
if (baseUri == null)
{
throw new ArgumentNullException("baseUri");
}
if (proxy == null)
{
proxy = GlobalProxySelection.GetEmptyWebProxy();
}
FavIconDescriptor ico = null;
try {
using (Stream stream = AsyncWebRequest.GetSyncResponseStream(baseUri, credentials, "RssBandit", proxy)) {
string htmlContent = string.Empty;
using (StreamReader reader = new StreamReader(stream)) {
htmlContent = reader.ReadToEnd();
ico = RequestIcon(baseUri, htmlContent, proxy, credentials);
}
}
} catch {
// no default HTML page to examine for a FavIcon entry.
// we do not stop here: try to get a direct download by requesting favicon.ico directly
}
string realIconUrl = null;
if (ico == null || ico == FavIconDescriptor.Empty)
{
try {
Uri b = new Uri(new Uri(baseUri), "favicon.ico");
realIconUrl = b.ToString();
} catch (UriFormatException) {}
}
if (realIconUrl == null)
{
return(FavIconDescriptor.Empty);
}
// now get the icon stream
using (Stream stream = AsyncWebRequest.GetSyncResponseStream(realIconUrl, credentials, "RssBandit", proxy)) {
Image img = CheckAndScaleImageFromStream(stream);
if (img != null)
{
return(new FavIconDescriptor(realIconUrl, baseUri, DateTime.Now, img));
}
}
return(FavIconDescriptor.Empty);
}
public static FavIconDescriptor RequestIcon(string baseUri, string htmlContent, IWebProxy proxy, ICredentials credentials)
{
if (htmlContent == null || htmlContent.Length == 0)
{
return(FavIconDescriptor.Empty);
}
if (proxy == null)
{
proxy = WebProxy.GetDefaultProxy();
}
string realIconUrl = null;
//<link rel="shortcut icon" href="url to an .ico">
MatchCollection matches = autoDiscoverRegex.Matches(htmlContent);
foreach (Match match in matches)
{
if (String.Compare(match.Groups["attName"].Value, "rel", true) == 0)
{
string url = match.Groups["href"].Value;
realIconUrl = ConvertToAbsoluteUrl(url, baseUri);
break;
}
}
if (realIconUrl == null)
{
return(FavIconDescriptor.Empty);
}
// now get the icon stream
using (Stream stream = AsyncWebRequest.GetSyncResponseStream(realIconUrl, credentials, "RssBandit", proxy)) {
Image img = CheckAndScaleImageFromStream(stream);
if (img != null)
{
return(new FavIconDescriptor(realIconUrl, baseUri, DateTime.Now, img));
}
}
return(FavIconDescriptor.Empty);
}