public static void Serialize(Stream s, XrdsDocument document)
{
Condition.Requires(s, "s").IsNotNull();
Condition.Requires(document, "document").IsNotNull();
lock (XrdsDocumentSerializer)
{
XrdsDocumentSerializer.Serialize(s, document);
}
}
public static XrdsDocument Deserialize(Stream s)
{
Condition.Requires(s, "s").IsNotNull();
lock (XrdsDocumentSerializer)
{
XrdsDocument document = (XrdsDocument)XrdsDocumentSerializer.Deserialize(s);
return(document);
}
}
private XrdsDocument GetYadisDocument(Uri url)
{
Trace += string.Format("Lookup URL {0}. ", url);
// GET directly from URL
HttpWebRequest request;
try
{
request = (HttpWebRequest)HttpWebRequest.Create(url);
}
catch (Exception ex)
{
throw new YadisRequestFailedException(string.Format("Unable to build Yadis request. Got '{0}'. Tried: {1}.", ex.Message, Trace));
}
try
{
using (HttpWebResponse response = (HttpWebResponse)request.GetResponse())
{
if (response.Headers["X-XRDS-Location"] != null)
{
Trace += string.Format("Got X-XRDS-Location header {0}. ", response.Headers["X-XRDS-Location"]);
Uri location;
try
{
location = new Uri(response.Headers["X-XRDS-Location"]);
}
catch (Exception ex)
{
throw new YadisRequestFailedException(string.Format("Unable to discover Yadis URL {0}. Got '{1}'. Tried: {2}.", Url, ex.Message, Trace));
}
return(GetYadisDocument(location));
}
else if (response.ContentType.StartsWith("application/xrds+xml"))
{
Trace += string.Format("Found Yadis document at {0}. ", url);
DiscoveredUrl = url;
try
{
using (Stream s = response.GetResponseStream())
{
return(XrdsDocument.Deserialize(s));
}
}
catch (Exception ex)
{
throw new YadisRequestFailedException(string.Format("Unable to deserialize Yadis document. Got '{0}'. Tried: {1}.", ex.Message, Trace));
}
}
else
{
Trace += string.Format("No X-XRDS-Location header or Yadis document found.");
throw new YadisRequestFailedException(string.Format("Unable to discover Yadis URL {0}. Tried: {1}.", Url, Trace));
}
}
}
catch (WebException ex)
{
throw new YadisRequestFailedException(string.Format("Unable to get Yadis response. Got '{0}'. Tried: {1}.", ex.Message, Trace));
}
}
