AuthBridge.Web.Controllers.FederationMetadataController.GetFederationMetadata C# (CSharp) Method

        public byte[] GetFederationMetadata(Uri passiveSignInUrl, Uri identifier, X509Certificate2 signingCertificate)
        {
            var credentials = new X509SigningCredentials(signingCertificate);

            // Figure out the hostname exposed from Azure and what port the service is listening on
            var realm = new EndpointAddress(identifier);
            var passiveEndpoint = new EndpointReference(passiveSignInUrl.AbsoluteUri);

            // Create metadata document for relying party
            EntityDescriptor entity = new EntityDescriptor(new EntityId(realm.Uri.AbsoluteUri));
            SecurityTokenServiceDescriptor sts = new SecurityTokenServiceDescriptor();
            entity.RoleDescriptors.Add(sts);

            // Add STS's signing key
            KeyDescriptor signingKey = new KeyDescriptor(credentials.SigningKeyIdentifier);
            signingKey.Use = KeyType.Signing;
            sts.Keys.Add(signingKey);

            // Add offered claim types
            sts.ClaimTypesOffered.Add(new DisplayClaim(ClaimTypes.AuthenticationMethod));
            sts.ClaimTypesOffered.Add(new DisplayClaim(ClaimTypes.AuthenticationInstant));
            sts.ClaimTypesOffered.Add(new DisplayClaim(ClaimTypes.Name));

            // Add passive federation endpoint
            sts.PassiveRequestorEndpoints.Add(passiveEndpoint);

            // Add supported protocols
            sts.ProtocolsSupported.Add(new Uri(WSFederationConstants.Namespace));

            // Add passive STS endpoint
            sts.SecurityTokenServiceEndpoints.Add(passiveEndpoint);

            // Set credentials with which to sign the metadata
            entity.SigningCredentials = credentials;

            // Serialize the metadata and convert it to an XElement
            MetadataSerializer serializer = new MetadataSerializer();
            MemoryStream stream = new MemoryStream();
            serializer.WriteMetadata(stream, entity);
            stream.Flush();

            return stream.ToArray();
        }