Feature/proxy reason phrase (#618)

* #599 started work to proxy reason phrase

* #599 test for aggregator

src/Ocelot/Cache/CachedResponse.cs

@@ -9,14 +9,15 @@ namespace Ocelot.Cache
             HttpStatusCode statusCode,
             Dictionary<string, IEnumerable<string>> headers,
             string body,
-            Dictionary<string, IEnumerable<string>> contentHeaders
-
+            Dictionary<string, IEnumerable<string>> contentHeaders,
+            string reasonPhrase
             )
         {
             StatusCode = statusCode;
             Headers = headers ?? new Dictionary<string, IEnumerable<string>>();
             ContentHeaders = contentHeaders ?? new Dictionary<string, IEnumerable<string>>();
             Body = body ?? "";
+            ReasonPhrase = reasonPhrase;
         }
 
         public HttpStatusCode StatusCode { get; private set; }
@@ -26,5 +27,7 @@ namespace Ocelot.Cache
         public Dictionary<string, IEnumerable<string>> ContentHeaders { get; private set; }
 
         public string Body { get; private set; }
+        
+        public string ReasonPhrase { get; private set; }
     }
 }

src/Ocelot/Cache/Middleware/OutputCacheMiddleware.cs

@@ -87,7 +87,7 @@
                 streamContent.Headers.TryAddWithoutValidation(header.Key, header.Value);
             }
 
-            return new DownstreamResponse(streamContent, cached.StatusCode, cached.Headers.ToList());
+            return new DownstreamResponse(streamContent, cached.StatusCode, cached.Headers.ToList(), cached.ReasonPhrase);
         }
 
         internal async Task<CachedResponse> CreateCachedResponse(DownstreamResponse response)
@@ -109,7 +109,7 @@
 
             var contentHeaders = response?.Content?.Headers.ToDictionary(v => v.Key, v => v.Value);
 
-            var cached = new CachedResponse(statusCode, headers, body, contentHeaders);
+            var cached = new CachedResponse(statusCode, headers, body, contentHeaders, response.ReasonPhrase);
             return cached;
         }
     }

src/Ocelot/Middleware/DownstreamResponse.cs

@@ -7,25 +7,27 @@ namespace Ocelot.Middleware
 {
     public class DownstreamResponse
     {
-        public DownstreamResponse(HttpContent content, HttpStatusCode statusCode, List<Header> headers)
+        public DownstreamResponse(HttpContent content, HttpStatusCode statusCode, List<Header> headers, string reasonPhrase)
         {
             Content = content;
             StatusCode = statusCode;
             Headers = headers ?? new List<Header>();
+            ReasonPhrase = reasonPhrase;
         }
 
         public DownstreamResponse(HttpResponseMessage response)
-            :this(response.Content, response.StatusCode, response.Headers.Select(x => new Header(x.Key, x.Value)).ToList())
+            :this(response.Content, response.StatusCode, response.Headers.Select(x => new Header(x.Key, x.Value)).ToList(), response.ReasonPhrase)
         {
         }
 
-        public DownstreamResponse(HttpContent content, HttpStatusCode statusCode, IEnumerable<KeyValuePair<string, IEnumerable<string>>> headers)
-            :this(content, statusCode, headers.Select(x => new Header(x.Key, x.Value)).ToList())
+        public DownstreamResponse(HttpContent content, HttpStatusCode statusCode, IEnumerable<KeyValuePair<string, IEnumerable<string>>> headers, string reasonPhrase)
+            :this(content, statusCode, headers.Select(x => new Header(x.Key, x.Value)).ToList(), reasonPhrase)
         {
         }
 
         public HttpContent Content { get; }
         public HttpStatusCode StatusCode { get; }
         public List<Header> Headers { get; }
+        public string ReasonPhrase {get;}
     }
 }

src/Ocelot/Middleware/Multiplexer/SimpleJsonResponseAggregator.cs

@@ -46,7 +46,7 @@ namespace Ocelot.Middleware.Multiplexer
                 Headers = {ContentType = new MediaTypeHeaderValue("application/json")}
             };
 
-            originalContext.DownstreamResponse = new DownstreamResponse(stringContent, HttpStatusCode.OK, new List<KeyValuePair<string, IEnumerable<string>>>());
+            originalContext.DownstreamResponse = new DownstreamResponse(stringContent, HttpStatusCode.OK, new List<KeyValuePair<string, IEnumerable<string>>>(), "cannot return from aggregate..which reason phrase would you use?");
         }
 
         private static void MapAggregateError(DownstreamContext originalContext, List<DownstreamContext> downstreamContexts, int i)

src/Ocelot/Responder/HttpContextResponder.cs

@@ -3,6 +3,7 @@ using System.Linq;
 using System.Net;
 using System.Threading.Tasks;
 using Microsoft.AspNetCore.Http;
+using Microsoft.AspNetCore.Http.Features;
 using Microsoft.Extensions.Primitives;
 using Ocelot.Headers;
 using Ocelot.Middleware;
@@ -45,6 +46,8 @@ namespace Ocelot.Responder
 
             context.Response.StatusCode = (int)response.StatusCode;
 
+            context.Response.HttpContext.Features.Get<IHttpResponseFeature>().ReasonPhrase = response.ReasonPhrase;
+
             using(content)
             {
                 if (response.StatusCode != HttpStatusCode.NotModified && context.Response.ContentLength != 0)

test/Ocelot.AcceptanceTests/AggregateTests.cs

@@ -559,7 +559,7 @@ namespace Ocelot.AcceptanceTests
             var merge = $"{one}, {two}";
             merge = merge.Replace("Hello", "Bye").Replace("{", "").Replace("}", "");
             var headers = responses.SelectMany(x => x.Headers).ToList();
-            return new DownstreamResponse(new StringContent(merge), HttpStatusCode.OK, headers);
+            return new DownstreamResponse(new StringContent(merge), HttpStatusCode.OK, headers, "some reason");
         }
     }
 }

test/Ocelot.AcceptanceTests/ReasonPhraseTests.cs

@@ -0,0 +1,76 @@
+namespace Ocelot.AcceptanceTests
+{
+    using System;
+    using System.Collections.Generic;
+    using System.Net;
+    using Microsoft.AspNetCore.Http;
+    using Microsoft.AspNetCore.Http.Features;
+    using Ocelot.Configuration.File;
+    using Shouldly;
+    using TestStack.BDDfy;
+    using Xunit;
+
+    public class ReasonPhraseTests : IDisposable
+    {
+        private readonly Steps _steps;
+        private string _contentType;
+        private long? _contentLength;
+        private bool _contentTypeHeaderExists;
+        private readonly ServiceHandler _serviceHandler;
+
+        public ReasonPhraseTests()
+        {
+            _serviceHandler = new ServiceHandler();
+            _steps = new Steps();
+        }
+
+        [Fact]
+        public void should_return_reason_phrase()
+        {
+            var configuration = new FileConfiguration
+            {
+                ReRoutes = new List<FileReRoute>
+                    {
+                        new FileReRoute
+                        {
+                            DownstreamPathTemplate = "/",
+                            DownstreamScheme = "http",
+                            DownstreamHostAndPorts = new List<FileHostAndPort>
+                            {
+                                new FileHostAndPort
+                                {
+                                    Host = "localhost",
+                                    Port = 51339,
+                                }
+                            },
+                            UpstreamPathTemplate = "/",
+                            UpstreamHttpMethod = new List<string> { "Get" },
+                        }
+                    }
+            };
+
+            this.Given(x => x.GivenThereIsAServiceRunningOn("http://localhost:51339", "/", "some reason"))
+                .And(x => _steps.GivenThereIsAConfiguration(configuration))
+                .And(x => _steps.GivenOcelotIsRunning())
+                .When(x => _steps.WhenIGetUrlOnTheApiGateway("/"))
+                .And(_ => _steps.ThenTheReasonPhraseIs("some reason"))
+                .BDDfy();
+        }
+
+        private void GivenThereIsAServiceRunningOn(string baseUrl, string basePath, string reasonPhrase)
+        {
+            _serviceHandler.GivenThereIsAServiceRunningOn(baseUrl, basePath, async context =>
+            {
+                context.Response.HttpContext.Features.Get<IHttpResponseFeature>().ReasonPhrase = reasonPhrase;
+
+                await context.Response.WriteAsync("YOYO!");
+            });
+        }
+
+        public void Dispose()
+        {
+            _serviceHandler?.Dispose();
+            _steps.Dispose();
+        }
+    }
+}

test/Ocelot.AcceptanceTests/Steps.cs

@@ -452,6 +452,11 @@
             header.First().ShouldBe(value);
         }
 
+        public void ThenTheReasonPhraseIs(string expected)
+        {
+            _response.ReasonPhrase.ShouldBe(expected);
+        }
+
         /// <summary>
         /// This is annoying cos it should be in the constructor but we need to set up the file before calling startup so its a step.
         /// </summary>

test/Ocelot.UnitTests/Cache/OutputCacheMiddlewareTests.cs

@@ -53,7 +53,7 @@
                 { "content-type", new List<string> { "application/json" } }
             };
 
-            var cachedResponse = new CachedResponse(HttpStatusCode.OK, headers, "", contentHeaders);
+            var cachedResponse = new CachedResponse(HttpStatusCode.OK, headers, "", contentHeaders, "some reason");
             this.Given(x => x.GivenThereIsACachedResponse(cachedResponse))
                 .And(x => x.GivenTheDownstreamRouteIs())
                 .When(x => x.WhenICallTheMiddleware())
@@ -69,7 +69,7 @@
                 { "Expires", new List<string> { "-1" } }
             };
 
-            var cachedResponse = new CachedResponse(HttpStatusCode.OK, new Dictionary<string, IEnumerable<string>>(), "", contentHeaders);
+            var cachedResponse = new CachedResponse(HttpStatusCode.OK, new Dictionary<string, IEnumerable<string>>(), "", contentHeaders, "some reason");
             this.Given(x => x.GivenThereIsACachedResponse(cachedResponse))
                 .And(x => x.GivenTheDownstreamRouteIs())
                 .When(x => x.WhenICallTheMiddleware())

test/Ocelot.UnitTests/Headers/HttpResponseHeaderReplacerTests.cs

@@ -43,7 +43,7 @@ namespace Ocelot.UnitTests.Headers
                 new List<KeyValuePair<string, IEnumerable<string>>>()
                 {
                     new KeyValuePair<string, IEnumerable<string>>("test", new List<string> {"test"})
-                });
+                }, "");
 
             var fAndRs = new List<HeaderFindAndReplace> {new HeaderFindAndReplace("test", "test", "chiken", 0)};
 
@@ -61,7 +61,7 @@ namespace Ocelot.UnitTests.Headers
                 new List<KeyValuePair<string, IEnumerable<string>>>()
                 {
                     new KeyValuePair<string, IEnumerable<string>>("test", new List<string> {"test"})
-                });
+                }, "");
 
             var fAndRs = new List<HeaderFindAndReplace>();
 
@@ -84,7 +84,7 @@ namespace Ocelot.UnitTests.Headers
                 new List<KeyValuePair<string, IEnumerable<string>>>()
                 {
                     new KeyValuePair<string, IEnumerable<string>>("Location", new List<string> {downstreamUrl})
-                });
+                }, "");
 
             var fAndRs = new List<HeaderFindAndReplace>
             {
@@ -111,7 +111,7 @@ namespace Ocelot.UnitTests.Headers
                 new List<KeyValuePair<string, IEnumerable<string>>>()
                 {
                     new KeyValuePair<string, IEnumerable<string>>("Location", new List<string> {downstreamUrl})
-                });
+                }, "");
 
             var fAndRs = new List<HeaderFindAndReplace>
             {
@@ -138,7 +138,7 @@ namespace Ocelot.UnitTests.Headers
                 new List<KeyValuePair<string, IEnumerable<string>>>()
                 {
                     new KeyValuePair<string, IEnumerable<string>>("Location", new List<string> {downstreamUrl})
-                });
+                }, "");
 
             var fAndRs = new List<HeaderFindAndReplace>
             {
@@ -165,7 +165,7 @@ namespace Ocelot.UnitTests.Headers
                 new List<KeyValuePair<string, IEnumerable<string>>>()
                 {
                     new KeyValuePair<string, IEnumerable<string>>("Location", new List<string> {downstreamUrl})
-                });
+                }, "");
 
             var fAndRs = new List<HeaderFindAndReplace>
             {
@@ -192,7 +192,7 @@ namespace Ocelot.UnitTests.Headers
                 new List<KeyValuePair<string, IEnumerable<string>>>()
                 {
                     new KeyValuePair<string, IEnumerable<string>>("Location", new List<string> {downstreamUrl})
-                });
+                }, "");
 
             var fAndRs = new List<HeaderFindAndReplace>
             {
@@ -219,7 +219,7 @@ namespace Ocelot.UnitTests.Headers
                 new List<KeyValuePair<string, IEnumerable<string>>>()
                 {
                     new KeyValuePair<string, IEnumerable<string>>("Location", new List<string> {downstreamUrl})
-                });
+                }, "");
 
             var fAndRs = new List<HeaderFindAndReplace>
             {

test/Ocelot.UnitTests/Middleware/SimpleJsonResponseAggregatorTests.cs

@@ -49,13 +49,13 @@ namespace Ocelot.UnitTests.Middleware
 
             var billDownstreamContext = new DownstreamContext(new DefaultHttpContext())
             {
-                DownstreamResponse = new DownstreamResponse(new StringContent("Bill says hi"), HttpStatusCode.OK, new EditableList<KeyValuePair<string, IEnumerable<string>>>()),
+                DownstreamResponse = new DownstreamResponse(new StringContent("Bill says hi"), HttpStatusCode.OK, new EditableList<KeyValuePair<string, IEnumerable<string>>>(), "some reason"),
                 DownstreamReRoute = billDownstreamReRoute
             };
 
             var georgeDownstreamContext = new DownstreamContext(new DefaultHttpContext())
             {
-                DownstreamResponse = new DownstreamResponse(new StringContent("George says hi"), HttpStatusCode.OK, new List<KeyValuePair<string, IEnumerable<string>>>()),
+                DownstreamResponse = new DownstreamResponse(new StringContent("George says hi"), HttpStatusCode.OK, new List<KeyValuePair<string, IEnumerable<string>>>(), "some reason"),
                 DownstreamReRoute = georgeDownstreamReRoute
             };
 
@@ -69,6 +69,7 @@ namespace Ocelot.UnitTests.Middleware
                 .When(x => WhenIAggregate())
                 .Then(x => ThenTheContentIs(expected))
                 .And(x => ThenTheContentTypeIs("application/json"))
+                .And(x => ThenTheReasonPhraseIs("cannot return from aggregate..which reason phrase would you use?"))
                 .BDDfy();
         }
 
@@ -91,13 +92,13 @@ namespace Ocelot.UnitTests.Middleware
 
             var billDownstreamContext = new DownstreamContext(new DefaultHttpContext())
             {
-                DownstreamResponse = new DownstreamResponse(new StringContent("Bill says hi"), HttpStatusCode.OK, new List<KeyValuePair<string, IEnumerable<string>>>()),
+                DownstreamResponse = new DownstreamResponse(new StringContent("Bill says hi"), HttpStatusCode.OK, new List<KeyValuePair<string, IEnumerable<string>>>(), "some reason"),
                 DownstreamReRoute = billDownstreamReRoute
             };
 
             var georgeDownstreamContext = new DownstreamContext(new DefaultHttpContext())
             {
-                DownstreamResponse = new DownstreamResponse(new StringContent("Error"), HttpStatusCode.OK, new List<KeyValuePair<string, IEnumerable<string>>>()),
+                DownstreamResponse = new DownstreamResponse(new StringContent("Error"), HttpStatusCode.OK, new List<KeyValuePair<string, IEnumerable<string>>>(), "some reason"),
                 DownstreamReRoute = georgeDownstreamReRoute,
             };
 
@@ -116,6 +117,11 @@ namespace Ocelot.UnitTests.Middleware
                 .BDDfy();
         }
 
+        private void ThenTheReasonPhraseIs(string expected)
+        {
+            _upstreamContext.DownstreamResponse.ReasonPhrase.ShouldBe(expected);
+        }
+
         private void ThenTheErrorIsMapped()
         {
             _upstreamContext.Errors.ShouldBe(_downstreamContexts[1].Errors);

test/Ocelot.UnitTests/Middleware/UserDefinedResponseAggregatorTests.cs

@@ -43,11 +43,11 @@ namespace Ocelot.UnitTests.Middleware
             {
                 new DownstreamContext(new DefaultHttpContext())
                 {
-                    DownstreamResponse = new DownstreamResponse(new StringContent("Tom"), HttpStatusCode.OK, new List<KeyValuePair<string, IEnumerable<string>>>())
+                    DownstreamResponse = new DownstreamResponse(new StringContent("Tom"), HttpStatusCode.OK, new List<KeyValuePair<string, IEnumerable<string>>>(), "some reason")
                 },
                 new DownstreamContext(new DefaultHttpContext())
                 {
-                    DownstreamResponse = new DownstreamResponse(new StringContent("Laura"), HttpStatusCode.OK, new List<KeyValuePair<string, IEnumerable<string>>>())
+                    DownstreamResponse = new DownstreamResponse(new StringContent("Laura"), HttpStatusCode.OK, new List<KeyValuePair<string, IEnumerable<string>>>(), "some reason")
                 }
             };
 
@@ -72,11 +72,11 @@ namespace Ocelot.UnitTests.Middleware
             {
                 new DownstreamContext(new DefaultHttpContext())
                 { 
-                    DownstreamResponse = new DownstreamResponse(new StringContent("Tom"), HttpStatusCode.OK, new List<KeyValuePair<string, IEnumerable<string>>>())
+                    DownstreamResponse = new DownstreamResponse(new StringContent("Tom"), HttpStatusCode.OK, new List<KeyValuePair<string, IEnumerable<string>>>(), "some reason")
                 },
                 new DownstreamContext(new DefaultHttpContext())
                 {
-                    DownstreamResponse = new DownstreamResponse(new StringContent("Laura"), HttpStatusCode.OK, new List<KeyValuePair<string, IEnumerable<string>>>())
+                    DownstreamResponse = new DownstreamResponse(new StringContent("Laura"), HttpStatusCode.OK, new List<KeyValuePair<string, IEnumerable<string>>>(), "some reason")
                 }
             };
 
@@ -146,7 +146,7 @@ namespace Ocelot.UnitTests.Middleware
                 var laura = await responses[1].Content.ReadAsStringAsync();
                 var content = $"{tom}, {laura}";
                 var headers = responses.SelectMany(x => x.Headers).ToList();
-                return new DownstreamResponse(new StringContent(content), HttpStatusCode.OK, headers);
+                return new DownstreamResponse(new StringContent(content), HttpStatusCode.OK, headers, "some reason");
             }
         }
     }

test/Ocelot.UnitTests/Responder/HttpContextResponderTests.cs

@@ -3,6 +3,7 @@ using System.Linq;
 using System.Net;
 using System.Net.Http;
 using Microsoft.AspNetCore.Http;
+using Microsoft.AspNetCore.Http.Features;
 using Ocelot.Headers;
 using Ocelot.Middleware;
 using Ocelot.Middleware.Multiplexer;
@@ -31,7 +32,7 @@ namespace Ocelot.UnitTests.Responder
                 new List<KeyValuePair<string, IEnumerable<string>>>
                 {
                     new KeyValuePair<string, IEnumerable<string>>("Transfer-Encoding", new List<string> {"woop"})
-                });
+                }, "some reason");
 
             _responder.SetResponseOnHttpContext(httpContext, response).GetAwaiter().GetResult();
             var header = httpContext.Response.Headers["Transfer-Encoding"];
@@ -43,7 +44,7 @@ namespace Ocelot.UnitTests.Responder
         {
             var httpContext = new DefaultHttpContext();
             var response = new DownstreamResponse(new StringContent("test"), HttpStatusCode.OK,
-                new List<KeyValuePair<string, IEnumerable<string>>>());
+                new List<KeyValuePair<string, IEnumerable<string>>>(), "some reason");
 
             _responder.SetResponseOnHttpContext(httpContext, response).GetAwaiter().GetResult();
             var header = httpContext.Response.Headers["Content-Length"];
@@ -58,13 +59,28 @@ namespace Ocelot.UnitTests.Responder
                 new List<KeyValuePair<string, IEnumerable<string>>>
                 {
                     new KeyValuePair<string, IEnumerable<string>>("test", new List<string> {"test"})
-                });
+                }, "some reason");
 
             _responder.SetResponseOnHttpContext(httpContext, response).GetAwaiter().GetResult();
             var header = httpContext.Response.Headers["test"];
             header.First().ShouldBe("test");
         }
 
+
+        [Fact]
+        public void should_add_reason_phrase()
+        {
+            var httpContext = new DefaultHttpContext();
+            var response = new DownstreamResponse(new StringContent(""), HttpStatusCode.OK,
+                new List<KeyValuePair<string, IEnumerable<string>>>
+                {
+                    new KeyValuePair<string, IEnumerable<string>>("test", new List<string> {"test"})
+                }, "some reason");
+
+            _responder.SetResponseOnHttpContext(httpContext, response).GetAwaiter().GetResult();
+            httpContext.Response.HttpContext.Features.Get<IHttpResponseFeature>().ReasonPhrase.ShouldBe(response.ReasonPhrase);
+        }
+
         [Fact]
         public void should_call_without_exception()
         {