2 files changed, 31 insertions, 11 deletions

diff --git a/src/DotNetOpenAuth.Core/Messaging/MessagingUtilities.cs b/src/DotNetOpenAuth.Core/Messaging/MessagingUtilities.cs
index 4f4eb66..2aee6ea 100644
--- a/src/DotNetOpenAuth.Core/Messaging/MessagingUtilities.cs
+++ b/src/DotNetOpenAuth.Core/Messaging/MessagingUtilities.cs
@@ -383,6 +383,24 @@ namespace DotNetOpenAuth.Messaging {
 			return new HttpResponseMessageActionResult(response);
 		}
 
+		public static void Send(this HttpResponseMessage response, HttpContextBase context = null) {
+			Requires.NotNull(response, "response");
+			context = context ?? new HttpContextWrapper(HttpContext.Current);
+			Verify.Operation(context != null, MessagingStrings.HttpContextRequired);
+
+			context.Response.StatusCode = (int)response.StatusCode;
+			context.Response.StatusDescription = response.ReasonPhrase;
+			foreach (var header in response.Headers) {
+				foreach (var value in header.Value) {
+					context.Response.AddHeader(header.Key, value);
+				}
+			}
+
+			if (response.Content != null) {
+				response.Content.CopyToAsync(context.Response.OutputStream).Wait();
+			}
+		}
+
 		internal static void DisposeIfNotNull(this IDisposable disposable) {
 			if (disposable != null) {
 				disposable.Dispose();
@@ -1977,17 +1995,7 @@ namespace DotNetOpenAuth.Messaging {
 			}
 
 			public override void ExecuteResult(ControllerContext context) {
-				context.HttpContext.Response.StatusCode = (int)this.response.StatusCode;
-				context.HttpContext.Response.StatusDescription = this.response.ReasonPhrase;
-				foreach (var header in this.response.Headers) {
-					foreach (var value in header.Value) {
-						context.HttpContext.Response.AddHeader(header.Key, value);
-					}
-				}
-
-				if (this.response.Content != null) {
-					this.response.Content.CopyToAsync(context.HttpContext.Response.OutputStream).Wait();
-				}
+				this.response.Send(context.HttpContext);
 			}
 		}
 	}
diff --git a/src/DotNetOpenAuth.OpenId/OpenId/OpenIdUtilities.cs b/src/DotNetOpenAuth.OpenId/OpenId/OpenIdUtilities.cs
index f8d542d..b656150 100644
--- a/src/DotNetOpenAuth.OpenId/OpenId/OpenIdUtilities.cs
+++ b/src/DotNetOpenAuth.OpenId/OpenId/OpenIdUtilities.cs
@@ -15,12 +15,15 @@ namespace DotNetOpenAuth.OpenId {
 	using System.Net.Cache;
 	using System.Net.Http;
 	using System.Text.RegularExpressions;
+	using System.Threading;
 	using System.Threading.Tasks;
 	using System.Web;
 	using System.Web.UI;
 	using DotNetOpenAuth.Messaging;
 	using DotNetOpenAuth.OpenId.ChannelElements;
 	using DotNetOpenAuth.OpenId.Extensions;
+	using DotNetOpenAuth.OpenId.RelyingParty;
+
 	using Org.Mentalis.Security.Cryptography;
 	using Validation;
 
@@ -79,6 +82,15 @@ namespace DotNetOpenAuth.OpenId {
 			return string.Format(CultureInfo.InvariantCulture, "{{{0}}}{{{1}}}", DateTime.UtcNow.Ticks, uniq);
 		}
 
+		public static async Task RedirectToProviderAsync(this IAuthenticationRequest authenticationRequest, HttpContextBase context = null, CancellationToken cancellationToken = default(CancellationToken)) {
+			Requires.NotNull(authenticationRequest, "authenticationRequest");
+			Verify.Operation(context != null || HttpContext.Current != null, MessagingStrings.HttpContextRequired);
+
+			context = context ?? new HttpContextWrapper(HttpContext.Current);
+			var response = await authenticationRequest.GetRedirectingResponseAsync(cancellationToken);
+			response.Send(context);
+		}
+
 		/// <summary>
 		/// Gets the OpenID protocol instance for the version in a message.
 		/// </summary>