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-rw-r--r--src/DotNetOAuth/Messaging/HttpRequestInfo.cs4
1 files changed, 4 insertions, 0 deletions
diff --git a/src/DotNetOAuth/Messaging/HttpRequestInfo.cs b/src/DotNetOAuth/Messaging/HttpRequestInfo.cs
index f095a6f..af0e637 100644
--- a/src/DotNetOAuth/Messaging/HttpRequestInfo.cs
+++ b/src/DotNetOAuth/Messaging/HttpRequestInfo.cs
@@ -42,6 +42,10 @@ namespace DotNetOAuth.Messaging {
/// </summary>
/// <param name="request">The ASP.NET structure to copy from.</param>
internal HttpRequestInfo(HttpRequest request) {
+ if (request == null) {
+ throw new ArgumentNullException("request");
+ }
+
this.HttpMethod = request.HttpMethod;
this.Url = request.Url;
this.Headers = GetHeaderCollection(request.Headers);