private static void GetIntoCache(string url)
{
try
{
var doc = new XmlDocument();
var fullrequesturl = Server + url;
var request = (HttpWebRequest)WebRequest.Create(fullrequesturl);
var response = (HttpWebResponse)request.GetHttpResponse();
var headers = response.Headers;
var status = response.StatusCode;
switch (status)
{
case HttpStatusCode.OK:
{
doc.Load(response.GetResponseStream());
var lastmodified = headers["Last-Modified"];
var priyomDoc = new PriyomDoc { Url = url, Document = doc, LastModified = lastmodified };
_manager1.Add(url, priyomDoc);
break;
}
case HttpStatusCode.NotFound:
{
throw new Exception("404");
}
default:
{
throw new Exception("Other failure");
}
}
}
catch (Exception ex)
{
throw new Exception("Failed to load requested data: " + ex.Message, ex.InnerException);
}
}
private static void Refreshcache(string url)
{
try
{
var priyomDoc = (PriyomDoc)_manager1.GetData(url);
var lastmodified = priyomDoc.LastModified;
var doc = priyomDoc.Document;
var fullrequesturl = Server + url;
var request = (HttpWebRequest)WebRequest.Create(fullrequesturl);
request.IfModifiedSince = Convert.ToDateTime(lastmodified);
var response = (HttpWebResponse)request.GetHttpResponse();
var headers = response.Headers;
var status = response.StatusCode;
switch (status)
{
case HttpStatusCode.NotModified:
//no need to update
break;
case HttpStatusCode.OK:
{
//refresh the cache and reload the doc
doc.Load(response.GetResponseStream());
var lastmodified2 = headers["Last-Modified"];
var priyomDoc2 = new PriyomDoc { Url = url, Document = doc, LastModified = lastmodified };
_manager1.Add(url, priyomDoc2);
break;
}
default:
{
break;
}
}
}
catch (Exception ex)
{
throw new Exception("Failed to load requested data: " + ex.Message, ex.InnerException);
}
}