React to OnSendingHeaders rename.

src/Microsoft.AspNet.Server.WebListener/FeatureContext.cs

@@ -79,7 +79,7 @@ namespace Microsoft.AspNet.Server.WebListener
             _features = new FeatureCollection();
             _authHandler = new AuthenticationHandler(requestContext);
             _enableResponseCaching = enableResponseCaching;
-            requestContext.Response.OnSendingHeaders(OnStartDelegate, this);
+            requestContext.Response.OnResponseStarting(OnStartDelegate, this);
             PopulateFeatures();
         }
 
@@ -372,14 +372,14 @@ namespace Microsoft.AspNet.Server.WebListener
             set { _responseHeaders = value; }
         }
 
-        bool IHttpResponseFeature.HeadersSent
+        bool IHttpResponseFeature.HasStarted
         {
             get { return Response.HasStarted; }
         }
 
-        void IHttpResponseFeature.OnSendingHeaders(Action<object> callback, object state)
+        void IHttpResponseFeature.OnResponseStarting(Action<object> callback, object state)
         {
-            Response.OnSendingHeaders(callback, state);
+            Response.OnResponseStarting(callback, state);
         }
 
         void IHttpResponseFeature.OnResponseCompleted(Action<object> callback, object state)

src/Microsoft.Net.Http.Server/RequestProcessing/Response.cs

@@ -48,7 +48,7 @@ namespace Microsoft.Net.Http.Server
         private long _expectedBodyLength;
         private BoundaryType _boundaryType;
         private HttpApi.HTTP_RESPONSE_V2 _nativeResponse;
-        private IList<Tuple<Action<object>, object>> _onSendingHeadersActions;
+        private IList<Tuple<Action<object>, object>> _onResponseStartingActions;
         private IList<Tuple<Action<object>, object>> _onResponseCompletedActions;
 
         private RequestContext _requestContext;
@@ -80,7 +80,7 @@ namespace Microsoft.Net.Http.Server
             _nativeResponse.Response_V1.Version.MajorVersion = 1;
             _nativeResponse.Response_V1.Version.MinorVersion = 1;
             _responseState = ResponseState.Created;
-            _onSendingHeadersActions = new List<Tuple<Action<object>, object>>();
+            _onResponseStartingActions = new List<Tuple<Action<object>, object>>();
             _onResponseCompletedActions = new List<Tuple<Action<object>, object>>();
             _bufferingEnabled = _requestContext.Server.BufferResponses;
             _expectedBodyLength = 0;
@@ -778,12 +778,12 @@ namespace Microsoft.Net.Http.Server
             _nativeStream.SwitchToOpaqueMode();
         }
 
-        public void OnSendingHeaders(Action<object> callback, object state)
+        public void OnResponseStarting(Action<object> callback, object state)
         {
-            IList<Tuple<Action<object>, object>> actions = _onSendingHeadersActions;
+            IList<Tuple<Action<object>, object>> actions = _onResponseStartingActions;
             if (actions == null)
             {
-                throw new InvalidOperationException("Headers already sent");
+                throw new InvalidOperationException("Response already started");
             }
 
             actions.Add(new Tuple<Action<object>, object>(callback, state));
@@ -802,7 +802,7 @@ namespace Microsoft.Net.Http.Server
 
         private void NotifyOnSendingHeaders()
         {
-            var actions = Interlocked.Exchange(ref _onSendingHeadersActions, null);
+            var actions = Interlocked.Exchange(ref _onResponseStartingActions, null);
             if (actions == null)
             {
                 // Something threw the first time, do not try again.

test/Microsoft.AspNet.Server.WebListener.FunctionalTests/ResponseHeaderTests.cs

@@ -216,9 +216,9 @@ namespace Microsoft.AspNet.Server.WebListener
                     responseHeaders.Add("Custom1", new string[] { "value1a", "value1b" });
                     responseHeaders.Add("Custom2", new string[] { "value2a, value2b" });
                     var body = responseInfo.Body;
-                    Assert.False(responseInfo.HeadersSent);
+                    Assert.False(responseInfo.HasStarted);
                     body.Flush();
-                    Assert.True(responseInfo.HeadersSent);
+                    Assert.True(responseInfo.HasStarted);
                     Assert.Throws<InvalidOperationException>(() => responseInfo.StatusCode = 404);
                     Assert.Throws<InvalidOperationException>(() => responseHeaders.Add("Custom3", new string[] { "value3a, value3b", "value3c" }));
                     return Task.FromResult(0);
@@ -248,9 +248,9 @@ namespace Microsoft.AspNet.Server.WebListener
                     responseHeaders.Add("Custom1", new string[] { "value1a", "value1b" });
                     responseHeaders.Add("Custom2", new string[] { "value2a, value2b" });
                     var body = responseInfo.Body;
-                    Assert.False(responseInfo.HeadersSent);
+                    Assert.False(responseInfo.HasStarted);
                     await body.FlushAsync();
-                    Assert.True(responseInfo.HeadersSent);
+                    Assert.True(responseInfo.HasStarted);
                     Assert.Throws<InvalidOperationException>(() => responseInfo.StatusCode = 404);
                     Assert.Throws<InvalidOperationException>(() => responseHeaders.Add("Custom3", new string[] { "value3a, value3b", "value3c" }));
                 }))

test/Microsoft.AspNet.Server.WebListener.FunctionalTests/ResponseTests.cs

@@ -36,7 +36,7 @@ namespace Microsoft.AspNet.Server.WebListener
             {
                 var httpContext = new DefaultHttpContext((IFeatureCollection)env);
                 Assert.Equal(200, httpContext.Response.StatusCode);
-                Assert.False(httpContext.Response.HeadersSent);
+                Assert.False(httpContext.Response.HasStarted);
                 return Task.FromResult(0);
             }))
             {