private HttpListener searchListener(Uri uri, out HttpListenerPrefix prefix)
{
prefix = null;
if (uri == null)
{
return(null);
}
var host = uri.Host;
var dns = Uri.CheckHostName(host) == UriHostNameType.Dns;
var port = uri.Port;
var path = HttpUtility.UrlDecode(uri.AbsolutePath);
var pathSlash = path[path.Length - 1] == '/' ? path : path + "/";
HttpListener bestMatch = null;
var bestLen = -1;
if (host != null && host.Length > 0)
{
foreach (var pref in _prefixes.Keys)
{
var ppath = pref.Path;
if (ppath.Length < bestLen)
{
continue;
}
if (pref.Port != port)
{
continue;
}
if (dns)
{
var phost = pref.Host;
if (Uri.CheckHostName(phost) == UriHostNameType.Dns && phost != host)
{
continue;
}
}
if (path.StartsWith(ppath) || pathSlash.StartsWith(ppath))
{
bestLen = ppath.Length;
bestMatch = _prefixes[pref];
prefix = pref;
}
}
if (bestLen != -1)
{
return(bestMatch);
}
}
var list = _unhandled;
bestMatch = matchFromList(host, path, list, out prefix);
if (path != pathSlash && bestMatch == null)
{
bestMatch = matchFromList(host, pathSlash, list, out prefix);
}
if (bestMatch != null)
{
return(bestMatch);
}
list = _all;
bestMatch = matchFromList(host, path, list, out prefix);
if (path != pathSlash && bestMatch == null)
{
bestMatch = matchFromList(host, pathSlash, list, out prefix);
}
if (bestMatch != null)
{
return(bestMatch);
}
return(null);
}