public static Uri ResolveRedirect(Uri uri)
{
const int maximumRequest = 5;
var currentUri = uri;
for (var i = 0; i < maximumRequest; i++)
{
var client = new RedirectWebClient();
// The empty using is so that we dispose of the stream and don't block
// We don't ACTUALLY attempt to download the file, but it appears that if the client sees a
// Content Length in the response it thinks there will be a response body and blocks.
using (client.OpenRead(currentUri)) { }
var location = client.ResponseHeaders["Location"];
if (location == null)
{
return(currentUri);
}
else
{
Log.InfoFormat("{0} redirected to {1}", currentUri, location);
if (Uri.IsWellFormedUriString(location, UriKind.Absolute))
{
currentUri = new Uri(location);
}
else if (Uri.IsWellFormedUriString(location, UriKind.Relative))
{
currentUri = new Uri(currentUri, location);
Log.DebugFormat("Relative URL {0} is absolute URL {1}", location, currentUri);
}
else
{
throw new Kraken("Invalid URL in Location header: " + location);
}
}
}
return(null);
}
public static Uri ResolveRedirect(Uri uri)
{
const int maximumRequest = 5;
var currentUri = uri;
for (var i = 0; i < maximumRequest; i++)
{
var client = new RedirectWebClient();
// The empty using is so that we dispose of the stream and don't block
// We don't ACTUALLY attempt to download the file, but it appears that if the client sees a
// Content Length in the response it thinks there will be a response body and blocks.
using (client.OpenRead(currentUri)) { }
var location = client.ResponseHeaders["Location"];
if (location == null)
{
return currentUri;
}
else
{
Log.DebugFormat("{0} redirected to {1}", currentUri, location);
if (Uri.IsWellFormedUriString(location, UriKind.Absolute))
{
currentUri = new Uri(location);
}
else if (Uri.IsWellFormedUriString(location, UriKind.Relative))
{
currentUri = new Uri(currentUri, location);
Log.DebugFormat("Relative URL {0} is absolute URL {1}", location, currentUri);
}
else
{
throw new Kraken("Invalid URL in Location header: " + location);
}
}
}
return null;
}