Moved "dnoa." prefix into a centralized constant.

6 files changed, 12 insertions, 7 deletions

diff --git a/src/DotNetOpenAuth/OpenId/ChannelElements/BackwardCompatibilityBindingElement.cs b/src/DotNetOpenAuth/OpenId/ChannelElements/BackwardCompatibilityBindingElement.cs
index d42cc03..de9cda9 100644
--- a/src/DotNetOpenAuth/OpenId/ChannelElements/BackwardCompatibilityBindingElement.cs
+++ b/src/DotNetOpenAuth/OpenId/ChannelElements/BackwardCompatibilityBindingElement.cs
@@ -20,13 +20,13 @@ namespace DotNetOpenAuth.OpenId.ChannelElements {
 		/// The name of the callback parameter that stores the Provider Endpoint URL
 		/// to tack onto the return_to URI.
 		/// </summary>
-		private const string ProviderEndpointParameterName = "dnoa.op_endpoint";
+		private const string ProviderEndpointParameterName = OpenIdUtilities.CustomParameterPrefix + "op_endpoint";
 
 		/// <summary>
 		/// The name of the callback parameter that stores the Claimed Identifier
 		/// to tack onto the return_to URI.
 		/// </summary>
-		private const string ClaimedIdentifierParameterName = "dnoa.claimed_id";
+		private const string ClaimedIdentifierParameterName = OpenIdUtilities.CustomParameterPrefix + "claimed_id";
 
 		#region IChannelBindingElement Members
 
diff --git a/src/DotNetOpenAuth/OpenId/ChannelElements/ReturnToNonceBindingElement.cs b/src/DotNetOpenAuth/OpenId/ChannelElements/ReturnToNonceBindingElement.cs
index 6643951..7ffeabc 100644
--- a/src/DotNetOpenAuth/OpenId/ChannelElements/ReturnToNonceBindingElement.cs
+++ b/src/DotNetOpenAuth/OpenId/ChannelElements/ReturnToNonceBindingElement.cs
@@ -44,7 +44,7 @@ namespace DotNetOpenAuth.OpenId.ChannelElements {
 		/// The parameter of the callback parameter we tack onto the return_to URL
 		/// to store the replay-detection nonce.
 		/// </summary>
-		internal const string NonceParameter = "dnoa.request_nonce";
+		internal const string NonceParameter = OpenIdUtilities.CustomParameterPrefix + "request_nonce";
 
 		/// <summary>
 		/// The length of the generated nonce's random part.
diff --git a/src/DotNetOpenAuth/OpenId/ChannelElements/ReturnToSignatureBindingElement.cs b/src/DotNetOpenAuth/OpenId/ChannelElements/ReturnToSignatureBindingElement.cs
index e2208ba..70e2194 100644
--- a/src/DotNetOpenAuth/OpenId/ChannelElements/ReturnToSignatureBindingElement.cs
+++ b/src/DotNetOpenAuth/OpenId/ChannelElements/ReturnToSignatureBindingElement.cs
@@ -33,13 +33,13 @@ namespace DotNetOpenAuth.OpenId.ChannelElements {
 		/// The name of the callback parameter we'll tack onto the return_to value
 		/// to store our signature on the return_to parameter.
 		/// </summary>
-		private const string ReturnToSignatureParameterName = "dnoa.return_to_sig";
+		private const string ReturnToSignatureParameterName = OpenIdUtilities.CustomParameterPrefix + "return_to_sig";
 
 		/// <summary>
 		/// The name of the callback parameter we'll tack onto the return_to value
 		/// to store the handle of the association we use to sign the return_to parameter.
 		/// </summary>
-		private const string ReturnToSignatureHandleParameterName = "dnoa.return_to_sig_handle";
+		private const string ReturnToSignatureHandleParameterName = OpenIdUtilities.CustomParameterPrefix + "return_to_sig_handle";
 
 		/// <summary>
 		/// The hashing algorithm used to generate the private signature on the return_to parameter.
diff --git a/src/DotNetOpenAuth/OpenId/OpenIdUtilities.cs b/src/DotNetOpenAuth/OpenId/OpenIdUtilities.cs
index f09bbe1..3cee968 100644
--- a/src/DotNetOpenAuth/OpenId/OpenIdUtilities.cs
+++ b/src/DotNetOpenAuth/OpenId/OpenIdUtilities.cs
@@ -24,6 +24,11 @@ namespace DotNetOpenAuth.OpenId {
 	/// </summary>
 	internal static class OpenIdUtilities {
 		/// <summary>
+		/// The prefix to designate this library's proprietary parameters added to the protocol.
+		/// </summary>
+		internal const string CustomParameterPrefix = "dnoa.";
+
+		/// <summary>
 		/// Gets the OpenID protocol instance for the version in a message.
 		/// </summary>
 		/// <param name="message">The message.</param>
diff --git a/src/DotNetOpenAuth/OpenId/RelyingParty/AuthenticationRequest.cs b/src/DotNetOpenAuth/OpenId/RelyingParty/AuthenticationRequest.cs
index 4a3c74f..b1b2a48 100644
--- a/src/DotNetOpenAuth/OpenId/RelyingParty/AuthenticationRequest.cs
+++ b/src/DotNetOpenAuth/OpenId/RelyingParty/AuthenticationRequest.cs
@@ -24,7 +24,7 @@ namespace DotNetOpenAuth.OpenId.RelyingParty {
 		/// <summary>
 		/// The name of the internal callback parameter to use to store the user-supplied identifier.
 		/// </summary>
-		internal const string UserSuppliedIdentifierParameterName = "dnoa.userSuppliedIdentifier";
+		internal const string UserSuppliedIdentifierParameterName = OpenIdUtilities.CustomParameterPrefix + "userSuppliedIdentifier";
 
 		/// <summary>
 		/// The relying party that created this request object.
diff --git a/src/DotNetOpenAuth/OpenId/RelyingParty/OpenIdRelyingParty.cs b/src/DotNetOpenAuth/OpenId/RelyingParty/OpenIdRelyingParty.cs
index 7039de6..7b9452e 100644
--- a/src/DotNetOpenAuth/OpenId/RelyingParty/OpenIdRelyingParty.cs
+++ b/src/DotNetOpenAuth/OpenId/RelyingParty/OpenIdRelyingParty.cs
@@ -379,7 +379,7 @@ namespace DotNetOpenAuth.OpenId.RelyingParty {
 		internal static bool IsOpenIdSupportingParameter(string parameterName) {
 			Protocol protocol = Protocol.Default;
 			return parameterName.StartsWith(protocol.openid.Prefix, StringComparison.OrdinalIgnoreCase)
-				|| parameterName.StartsWith("dnoa.", StringComparison.Ordinal);
+				|| parameterName.StartsWith(OpenIdUtilities.CustomParameterPrefix, StringComparison.Ordinal);
 		}
 
 		/// <summary>