Fix regression where llHTTPRequests which did not get an OK response returned 499 and the exception message in the http_response event rather than the actual response code and body.

This was a regression since commit 831e4c3 (Thu Apr 4 00:36:15 2013)
This commit also adds a regression test for this case, though this currently only works with Mono
This aims to address http://opensimulator.org/mantis/view.php?id=6704

2 files changed, 238 insertions, 40 deletions

diff --git a/OpenSim/Region/CoreModules/Scripting/HttpRequest/ScriptsHttpRequests.cs b/OpenSim/Region/CoreModules/Scripting/HttpRequest/ScriptsHttpRequests.cs
index 6793fc8..1a62405 100644
--- a/OpenSim/Region/CoreModules/Scripting/HttpRequest/ScriptsHttpRequests.cs
+++ b/OpenSim/Region/CoreModules/Scripting/HttpRequest/ScriptsHttpRequests.cs
@@ -419,7 +419,7 @@ namespace OpenSim.Region.CoreModules.Scripting.HttpRequest
             get { return _reqID; }
             set { _reqID = value; }
         }
-        public HttpWebRequest Request;
+        public WebRequest Request;
         public string ResponseBody;
         public List<string> ResponseMetadata;
         public Dictionary<string, string> ResponseHeaders;
@@ -431,18 +431,11 @@ namespace OpenSim.Region.CoreModules.Scripting.HttpRequest
             SendRequest();
         }
 
-        /*
-         * TODO: More work on the response codes.  Right now
-         * returning 200 for success or 499 for exception
-         */
-
         public void SendRequest()
         {
-            HttpWebResponse response = null;
-
             try
             {
-                Request = (HttpWebRequest) WebRequest.Create(Url);
+                Request = WebRequest.Create(Url);
                 Request.Method = HttpMethod;
                 Request.ContentType = HttpMIMEType;
 
@@ -480,14 +473,17 @@ namespace OpenSim.Region.CoreModules.Scripting.HttpRequest
                     }
                 }
 
-                foreach (KeyValuePair<string, string> entry in ResponseHeaders)
-                    if (entry.Key.ToLower().Equals("user-agent"))
-                        Request.UserAgent = entry.Value;
-                    else
-                        Request.Headers[entry.Key] = entry.Value;
+                if (ResponseHeaders != null)
+                {
+                    foreach (KeyValuePair<string, string> entry in ResponseHeaders)
+                        if (entry.Key.ToLower().Equals("user-agent") && Request is HttpWebRequest)
+                            ((HttpWebRequest)Request).UserAgent = entry.Value;
+                        else
+                            Request.Headers[entry.Key] = entry.Value;
+                }
 
                 // Encode outbound data
-                if (OutboundBody.Length > 0)
+                if (OutboundBody != null && OutboundBody.Length > 0)
                 {
                     byte[] data = Util.UTF8.GetBytes(OutboundBody);
 
@@ -510,12 +506,19 @@ namespace OpenSim.Region.CoreModules.Scripting.HttpRequest
                     {
                         throw;
                     }
-                    response = (HttpWebResponse)e.Response;
+
+                    HttpWebResponse response = (HttpWebResponse)e.Response;
+
+                    Status = (int)response.StatusCode;
+                    ResponseBody = response.StatusDescription;
                     _finished = true;
                 }
             }
             catch (Exception e)
             {
+//                m_log.Debug(
+//                    string.Format("[SCRIPTS HTTP REQUESTS]: Exception on request to {0} for {1}  ", Url, ItemID), e);
+
                 Status = (int)OSHttpStatusCode.ClientErrorJoker;
                 ResponseBody = e.Message;
                 _finished = true;
@@ -528,33 +531,27 @@ namespace OpenSim.Region.CoreModules.Scripting.HttpRequest
 
             try
             {
-                response = (HttpWebResponse)Request.EndGetResponse(ar);
-                Status = (int)response.StatusCode;
-
-                Stream resStream = response.GetResponseStream();
-                StringBuilder sb = new StringBuilder();
-                byte[] buf = new byte[8192];
-                string tempString = null;
-                int count = 0;
-
-                do
+                try
                 {
-                    // fill the buffer with data
-                    count = resStream.Read(buf, 0, buf.Length);
-
-                    // make sure we read some data
-                    if (count != 0)
+                    response = (HttpWebResponse)Request.EndGetResponse(ar);
+                }
+                catch (WebException e)
+                {
+                    if (e.Status != WebExceptionStatus.ProtocolError)
                     {
-                        // translate from bytes to ASCII text
-                        tempString = Util.UTF8.GetString(buf, 0, count);
-
-                        // continue building the string
-                        sb.Append(tempString);
+                        throw;
                     }
-                } 
-                while (count > 0); // any more data to read?
 
-                ResponseBody = sb.ToString();         
+                    response = (HttpWebResponse)e.Response;
+                }
+
+                Status = (int)response.StatusCode;
+
+                using (Stream stream = response.GetResponseStream())
+                {
+                    StreamReader reader = new StreamReader(stream, Encoding.UTF8);
+                    ResponseBody = reader.ReadToEnd();
+                } 
             }
             catch (Exception e)
             {
@@ -587,4 +584,4 @@ namespace OpenSim.Region.CoreModules.Scripting.HttpRequest
                 Request.Abort();
         }
     }
-}
+}
\ No newline at end of file
diff --git a/OpenSim/Region/CoreModules/Scripting/HttpRequest/Tests/ScriptsHttpRequestsTests.cs b/OpenSim/Region/CoreModules/Scripting/HttpRequest/Tests/ScriptsHttpRequestsTests.cs
new file mode 100644
index 0000000..f638f91
--- /dev/null
+++ b/OpenSim/Region/CoreModules/Scripting/HttpRequest/Tests/ScriptsHttpRequestsTests.cs
@@ -0,0 +1,201 @@
+/*
+ * Copyright (c) Contributors, http://opensimulator.org/
+ * See CONTRIBUTORS.TXT for a full list of copyright holders.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above copyright
+ *       notice, this list of conditions and the following disclaimer in the
+ *       documentation and/or other materials provided with the distribution.
+ *     * Neither the name of the OpenSimulator Project nor the
+ *       names of its contributors may be used to endorse or promote products
+ *       derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Net;
+using System.Reflection;
+using System.Runtime.Serialization;
+using System.Text;
+using System.Threading;
+using log4net.Config;
+using NUnit.Framework;
+using OpenMetaverse;
+using OpenMetaverse.Assets;
+using OpenSim.Framework;
+using OpenSim.Region.CoreModules.Scripting.HttpRequest;
+using OpenSim.Region.Framework.Scenes;
+using OpenSim.Tests.Common;
+using OpenSim.Tests.Common.Mock;
+
+namespace OpenSim.Region.CoreModules.Scripting.HttpRequest.Tests
+{
+    class TestWebRequestCreate : IWebRequestCreate
+    {       
+        public TestWebRequest NextRequest { get; set; }
+
+        public WebRequest Create(Uri uri)
+        {
+//            NextRequest.RequestUri = uri;
+
+            return NextRequest;
+
+//            return new TestWebRequest(new SerializationInfo(typeof(TestWebRequest), new FormatterConverter()), new StreamingContext());
+        }
+    }
+
+    class TestWebRequest : WebRequest
+    {
+        public override string ContentType { get; set; }
+        public override string Method { get; set; }
+
+        public Func<IAsyncResult, WebResponse> OnEndGetResponse { get; set; }
+
+        public TestWebRequest() : base() 
+        {
+//            Console.WriteLine("created");
+        }
+
+//        public TestWebRequest(SerializationInfo serializationInfo, StreamingContext streamingContext) 
+//            : base(serializationInfo, streamingContext) 
+//        {
+//            Console.WriteLine("created");
+//        }
+
+        public override IAsyncResult BeginGetResponse(AsyncCallback callback, object state)
+        {
+//            Console.WriteLine("bish");
+            TestAsyncResult tasr = new TestAsyncResult();
+            callback(tasr);
+
+            return tasr;
+        }
+
+        public override WebResponse EndGetResponse(IAsyncResult asyncResult)
+        {
+//            Console.WriteLine("bosh");
+            return OnEndGetResponse(asyncResult);
+        }
+    }
+
+    class TestHttpWebResponse : HttpWebResponse
+    {
+        public string Response { get; set; }
+
+        public TestHttpWebResponse(SerializationInfo serializationInfo, StreamingContext streamingContext) 
+            : base(serializationInfo, streamingContext) {}
+
+        public override Stream GetResponseStream()
+        {
+            return new MemoryStream(Encoding.UTF8.GetBytes(Response));
+        }
+    }
+
+    class TestAsyncResult : IAsyncResult
+    {
+        WaitHandle m_wh = new ManualResetEvent(true);
+
+        object IAsyncResult.AsyncState 
+        {
+            get {
+                throw new System.NotImplementedException ();
+            }
+        }
+
+        WaitHandle IAsyncResult.AsyncWaitHandle 
+        {
+            get { return m_wh; }
+        }
+
+        bool IAsyncResult.CompletedSynchronously 
+        {
+            get { return false; }
+        }
+
+        bool IAsyncResult.IsCompleted 
+        {
+            get { return true; }
+        }
+    }
+
+    /// <summary>
+    /// Test script http request code.
+    /// </summary>
+    /// <remarks>
+    /// This class uses some very hacky workarounds in order to mock HttpWebResponse which are Mono dependent (though
+    /// alternative code can be written to make this work for Windows).  However, the value of being able to
+    /// regression test this kind of code is very high.
+    /// </remarks>
+    [TestFixture]
+    public class ScriptsHttpRequestsTests : OpenSimTestCase
+    {
+        /// <summary>
+        /// Test what happens when we get a 404 response from a call.
+        /// </summary>
+        [Test]
+        public void Test404Response()
+        {
+            TestHelpers.InMethod();
+            TestHelpers.EnableLogging();
+
+            if (!Util.IsPlatformMono)
+                Assert.Ignore("Ignoring test since can only currently run on Mono");           
+
+            string rawResponse = "boom";
+
+            TestWebRequestCreate twrc = new TestWebRequestCreate();
+
+            TestWebRequest twr = new TestWebRequest();
+            //twr.OnEndGetResponse += ar => new TestHttpWebResponse(null, new StreamingContext());
+            twr.OnEndGetResponse += ar => 
+            {
+                SerializationInfo si = new SerializationInfo(typeof(HttpWebResponse), new FormatterConverter());
+                StreamingContext sc = new StreamingContext();
+//                WebHeaderCollection headers = new WebHeaderCollection();
+//                si.AddValue("m_HttpResponseHeaders", headers);
+                si.AddValue("uri", new Uri("test://arrg"));
+//                si.AddValue("m_Certificate", null);
+                si.AddValue("version", HttpVersion.Version11);
+                si.AddValue("statusCode", HttpStatusCode.NotFound);
+                si.AddValue("contentLength", 0);
+                si.AddValue("method", "GET");
+                si.AddValue("statusDescription", "Not Found");
+                si.AddValue("contentType", null);
+                si.AddValue("cookieCollection", new CookieCollection());
+
+                TestHttpWebResponse thwr = new TestHttpWebResponse(si, sc);
+                thwr.Response = rawResponse;
+
+                throw new WebException("no message", null, WebExceptionStatus.ProtocolError, thwr);
+            };
+
+            twrc.NextRequest = twr;
+
+            WebRequest.RegisterPrefix("test", twrc);
+            HttpRequestClass hr = new HttpRequestClass();
+            hr.Url = "test://something";
+            hr.SendRequest();
+
+            while (!hr.Finished)
+                Thread.Sleep(100);
+
+            Assert.That(hr.Status, Is.EqualTo((int)HttpStatusCode.NotFound));
+            Assert.That(hr.ResponseBody, Is.EqualTo(rawResponse));
+        }
+    }
+}
\ No newline at end of file