System.Net.CredentialKey.IsPrefix C# (CSharp) Method

        internal bool IsPrefix(Uri uri, Uri prefixUri) {

            if (prefixUri.Scheme != uri.Scheme || prefixUri.Host != uri.Host || prefixUri.Port != uri.Port)
                return false;

            int prefixLen = prefixUri.AbsolutePath.LastIndexOf('/');
            if (prefixLen > uri.AbsolutePath.LastIndexOf('/'))
                return false;

            return String.Compare(uri.AbsolutePath, 0, prefixUri.AbsolutePath, 0, prefixLen, StringComparison.OrdinalIgnoreCase ) == 0;
        }