public override IHttpRouteData GetRouteData(string virtualPathRoot, HttpRequestMessage request)
{
// Optimize matching by comparing the static left part of the route url with the requested path.
var requestedPath = GetCachedValue(request, RequestedPathKey, () => request.RequestUri.AbsolutePath.Substring(1));
if (!_visitor.IsStaticLeftPartOfUrlMatched(requestedPath))
{
return(null);
}
// Let the underlying route match, and if it does, then add a few more constraints.
var routeData = base.GetRouteData(virtualPathRoot, request);
if (routeData == null)
{
return(null);
}
// Constrain by querystring param if there are any.
var routeValues = new HttpRouteValueDictionary(routeData.Values);
if (!_visitor.ProcessQueryStringConstraints((constraint, parameterName) => ProcessConstraint(request, constraint, parameterName, routeValues, HttpRouteDirection.UriResolution)))
{
return(null);
}
// Constrain by subdomain if configured
var requestedSubdomain = GetCachedValue(request, RequestedSubdomainKey, () => _configuration.SubdomainParser(request.SafeGet(r => r.Headers.Host)));
if (!_visitor.IsSubdomainMatched(requestedSubdomain))
{
return(null);
}
// Constrain by culture name if configured
var currentUICultureName = GetCachedValue(request, CurrentUICultureNameKey, () => _configuration.CurrentUICultureResolver(request, routeData));
if (!_visitor.IsCultureNameMatched(currentUICultureName))
{
return(null);
}
return(routeData);
}
