public RssItem[] EndGetRss(IAsyncResult asyncResult)
{
CustomAsyncResult <WebRequestState> myAsyncResult = (CustomAsyncResult <WebRequestState>)asyncResult;
WebRequestState myState = myAsyncResult.AdditionalData;
var result = RssHelper.ConvertXmlToRss(XElement.Load(new XmlTextReader(CompleteGetUrl(asyncResult))), myState.Count).ToArray();
WebOperationContext.Current.OutgoingResponse.ContentType = "application/json; charset=utf-8";
return(result);
}
private Stream CompleteGetUrl(IAsyncResult asyncResult)
{
if (asyncResult is CompletedAsyncResult <WebRequestState> )
{
/// The content is already in cache. So, return the item from
/// cache
WebRequestState myState = (asyncResult as CompletedAsyncResult <WebRequestState>).Data;
string content = Services.Get <ICache>().Get(myState.Url) as string;
return(new MemoryStream(Encoding.UTF8.GetBytes(content)));
}
else
{
CustomAsyncResult <WebRequestState> myAsyncResult = (CustomAsyncResult <WebRequestState>)asyncResult;
WebRequestState myState = myAsyncResult.AdditionalData;
if (myState.Error != null)
{
throw new ProtocolException(myState.Error.Message, myState.Error);
}
//throw new WebProtocolException(HttpStatusCode.InternalServerError, myState.Error.Message,
//myState.Error);
var outResponse = WebOperationContext.Current.OutgoingResponse;
outResponse.ContentLength = myState.Response.ContentLength;
outResponse.ContentType = myState.Response.ContentType;
SetCaching(WebOperationContext.Current, DateTime.Now, myState.CacheDuration);
var contentEncoding = myState.Response.ContentEncoding;
if (myState.CacheDuration > 0)
{
return(new StreamWrapper(myState.Response.GetResponseStream(),
(int)(outResponse.ContentLength > 0 ? outResponse.ContentLength : 8 * 1024),
buffer =>
{
Encoding enc;
try
{
if (string.IsNullOrEmpty(contentEncoding))
{
enc = Encoding.UTF8;
}
else
{
enc = Encoding.GetEncoding(contentEncoding);
}
}
catch
{
enc = Encoding.GetEncoding(1252);
}
if (!ConstantHelper.DisableCache)
{
Services.Get <ICache>().Add(myState.Url, enc.GetString(buffer));
}
}));
}
else
{
return(myState.Response.GetResponseStream());
}
}
}
