protected void IdentityEndpoint20_NormalizeUri(object sender, IdentityEndpointNormalizationEventArgs e) {
// This sample Provider has a custom policy for normalizing URIs, which is that the whole
// path of the URI be lowercase except for the first letter of the username.
UriBuilder normalized = new UriBuilder(e.UserSuppliedIdentifier);
string username = Request.QueryString["username"].TrimEnd('/').ToLowerInvariant();
username = username.Substring(0, 1).ToUpperInvariant() + username.Substring(1);
normalized.Path = "/user/" + username;
normalized.Scheme = "http"; // for a real Provider, this should be HTTPS if supported.
e.NormalizedIdentifier = normalized.Uri;
}
/// <summary>
/// Checks the incoming request and invokes a browser redirect if the URL has not been normalized.
/// </summary>
/// <seealso cref="IdentityEndpointNormalizationEventArgs.NormalizedIdentifier"/>
protected virtual void OnNormalize()
{
UriIdentifier userSuppliedIdentifier = Util.GetRequestUrlFromContext();
var normalizationArgs = new IdentityEndpointNormalizationEventArgs(userSuppliedIdentifier);
var normalizeUri = NormalizeUri;
if (normalizeUri != null) {
normalizeUri(this, normalizationArgs);
} else {
// Do some best-guess normalization.
normalizationArgs.NormalizedIdentifier = bestGuessNormalization(normalizationArgs.UserSuppliedIdentifier);
}
// If we have a normalized form, we should use it.
// We only compare path and query because the host name SHOULD NOT be case sensitive,
// and the fragment will be asserted or cleared by the OP during authentication.
if (normalizationArgs.NormalizedIdentifier != null &&
!String.Equals(normalizationArgs.NormalizedIdentifier.PathAndQuery, userSuppliedIdentifier.Uri.PathAndQuery, StringComparison.Ordinal)) {
Page.Response.Redirect(normalizationArgs.NormalizedIdentifier.AbsoluteUri);
}
}
