adding OSHttpRequest and OSHttpResponse which wrap HttpListenerRequest and HttpListenerResponse respectively.

enhancing IStreamHandler and IStreamedHandler interfaces so that OSHttp{Request,Response} get passed in, 
allowing RestHandlers to set response status code, redirections, etc.

OpenSim/Framework/Communications/Capabilities/LLSDStreamHandler.cs

@@ -27,6 +27,7 @@
 
 using System.Collections;
 using System.IO;
+using System.Net;
 using System.Text;
 using OpenSim.Framework.Servers;
 
@@ -43,7 +44,8 @@ namespace OpenSim.Framework.Communications.Capabilities
             m_method = method;
         }
 
-        public override byte[] Handle(string path, Stream request)
+        public override byte[] Handle(string path, Stream request, 
+                                      OSHttpRequest httpRequest, OSHttpResponse httpResponse)
         {
             //Encoding encoding = Encoding.UTF8;
             //StreamReader streamReader = new StreamReader(request, false);

OpenSim/Framework/Servers/BaseHttpServer.cs

@@ -136,8 +136,8 @@ namespace OpenSim.Framework.Servers
             {
                 HttpListenerContext context = (HttpListenerContext) stateinfo;
 
-                HttpListenerRequest request = context.Request;
+                OSHttpRequest request = new OSHttpRequest(context.Request);
-                HttpListenerResponse response = context.Response;
+                OSHttpResponse response = new OSHttpResponse(context.Response);
 
                 response.KeepAlive = false;
                 response.SendChunked = false;
@@ -157,7 +157,7 @@ namespace OpenSim.Framework.Servers
                     {
                         IStreamedRequestHandler streamedRequestHandler = requestHandler as IStreamedRequestHandler;
 
-                        buffer = streamedRequestHandler.Handle(path, request.InputStream);
+                        buffer = streamedRequestHandler.Handle(path, request.InputStream, request, response);
                     }
                     else
                     {
@@ -165,14 +165,14 @@ namespace OpenSim.Framework.Servers
 
                         using (MemoryStream memoryStream = new MemoryStream())
                         {
-                            streamHandler.Handle(path, request.InputStream, memoryStream);
+                            streamHandler.Handle(path, request.InputStream, memoryStream, request, response);
                             memoryStream.Flush();
                             buffer = memoryStream.ToArray();
                         }
                     }
 
                     request.InputStream.Close();
-                    response.ContentType = requestHandler.ContentType;
+                    if (!response.IsContentTypeSet) response.ContentType = requestHandler.ContentType;
                     response.ContentLength64 = buffer.LongLength;
 
                     try
@@ -280,7 +280,7 @@ namespace OpenSim.Framework.Servers
         /// </summary>
         /// <param name="request"></param>
         /// <param name="response"></param>
-        private void HandleXmlRpcRequests(HttpListenerRequest request, HttpListenerResponse response)
+        private void HandleXmlRpcRequests(OSHttpRequest request, OSHttpResponse response)
         {
             Stream requestStream = request.InputStream;
 
@@ -358,7 +358,7 @@ namespace OpenSim.Framework.Servers
             }
         }
 
-        private void HandleLLSDRequests(HttpListenerRequest request, HttpListenerResponse response)
+        private void HandleLLSDRequests(OSHttpRequest request, OSHttpResponse response)
         {
             Stream requestStream = request.InputStream;
 
@@ -416,7 +416,7 @@ namespace OpenSim.Framework.Servers
             }
         }
 
-        public void HandleHTTPRequest(HttpListenerRequest request, HttpListenerResponse response)
+        public void HandleHTTPRequest(OSHttpRequest request, OSHttpResponse response)
         {
             switch (request.HttpMethod)
             {
@@ -430,7 +430,7 @@ namespace OpenSim.Framework.Servers
             }
         }
 
-        private void HandleContentVerbs(HttpListenerRequest request, HttpListenerResponse response)
+        private void HandleContentVerbs(OSHttpRequest request, OSHttpResponse response)
         {
             // This is a test.  There's a workable alternative..  as this way sucks.
             // We'd like to put this into a text file parhaps that's easily editable.
@@ -505,7 +505,7 @@ namespace OpenSim.Framework.Servers
             }
         }
 
-        private static void DoHTTPGruntWork(Hashtable responsedata, HttpListenerResponse response)
+        private static void DoHTTPGruntWork(Hashtable responsedata, OSHttpResponse response)
         {
             int responsecode = (int)responsedata["int_response_code"];
             string responseString = (string)responsedata["str_response_string"];
@@ -552,7 +552,7 @@ namespace OpenSim.Framework.Servers
             }
         }
 
-        public void SendHTML404(HttpListenerResponse response, string host)
+        public void SendHTML404(OSHttpResponse response, string host)
         {
             // I know this statuscode is dumb, but the client doesn't respond to 404s and 500s
             response.StatusCode = 200;
@@ -579,7 +579,7 @@ namespace OpenSim.Framework.Servers
             }
         }
 
-        public void SendHTML500(HttpListenerResponse response)
+        public void SendHTML500(OSHttpResponse response)
         {
             // I know this statuscode is dumb, but the client doesn't respond to 404s and 500s
             response.StatusCode = 200;

OpenSim/Framework/Servers/BaseStreamHandler.cs

@@ -26,12 +26,14 @@
  */
 
 using System.IO;
+using System.Net;
 
 namespace OpenSim.Framework.Servers
 {
     public abstract class BaseStreamHandler : BaseRequestHandler, IStreamedRequestHandler
     {
-        public abstract byte[] Handle(string path, Stream request);
+        public abstract byte[] Handle(string path, Stream request, 
+                                      OSHttpRequest httpRequest, OSHttpResponse httpResponse);
 
         protected BaseStreamHandler(string httpMethod, string path) : base(httpMethod, path)
         {

OpenSim/Framework/Servers/BinaryStreamHandler.cs

@@ -27,6 +27,7 @@
 
 using System.IO;
 using System.Text;
+using System.Net;
 
 namespace OpenSim.Framework.Servers
 {
@@ -36,7 +37,7 @@ namespace OpenSim.Framework.Servers
     {
         private BinaryMethod m_method;
 
-        public override byte[] Handle(string path, Stream request)
+        public override byte[] Handle(string path, Stream request, OSHttpRequest httpRequest, OSHttpResponse httpResponse)
         {
             byte[] data = ReadFully(request);
             string param = GetParam(path);

OpenSim/Framework/Servers/IStreamHandler.cs

@@ -27,6 +27,7 @@
 
 using System.Collections;
 using System.IO;
+using System.Net;
 
 namespace OpenSim.Framework.Servers
 {
@@ -45,13 +46,13 @@ namespace OpenSim.Framework.Servers
     public interface IStreamedRequestHandler : IRequestHandler
     {
         // Handle request stream, return byte array
-        byte[] Handle(string path, Stream request);
+        byte[] Handle(string path, Stream request, OSHttpRequest httpRequest, OSHttpResponse httpResponse);
     }
 
     public interface IStreamHandler : IRequestHandler
     {
         // Handle request stream, return byte array
-        void Handle(string path, Stream request, Stream response);
+        void Handle(string path, Stream request, Stream response, OSHttpRequest httpReqbuest, OSHttpResponse httpResponse);
     }
     public interface IGenericHTTPHandler : IRequestHandler
     {

OpenSim/Framework/Servers/OSHttpRequest.cs

@@ -0,0 +1,145 @@
+/*
+ * 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 OpenSim 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.Specialized;
+using System.Net;
+using System.IO;
+using System.Text;
+
+namespace OpenSim.Framework.Servers
+{
+    public class OSHttpRequest
+    {
+        private string[] _acceptTypes;
+        private Encoding _contentEncoding;
+        private long _contentLength64;
+        private string _contentType;
+        private CookieCollection _cookies;
+        private NameValueCollection _headers;
+        private string _httpMethod;
+        private Stream _inputStream;
+        private bool _isSecureConnection;
+        private bool _keepAlive;
+        private string _rawUrl;
+        private Uri _url;
+        private NameValueCollection _queryString;
+        private string _userAgent;
+
+        public string[] AcceptTypes
+        {
+            get { return _acceptTypes; }
+        }
+
+        public Encoding ContentEncoding 
+        {
+            get { return _contentEncoding; }
+        }
+
+        public long ContentLength
+        {
+            get { return _contentLength64; }
+        }
+
+        public string ContentType
+        {
+            get { return _contentType; }
+        }
+
+        public CookieCollection Cookies
+        {
+            get { return _cookies; }
+        }
+
+        public NameValueCollection Headers
+        {
+            get { return _headers; }
+        }
+
+        public string HttpMethod
+        {
+            get { return _httpMethod; }
+        }
+
+        public Stream InputStream
+        {
+            get { return _inputStream; }
+        }
+
+        public bool IsSecureConnection
+        {
+            get { return _isSecureConnection; }
+        }
+
+        public bool KeepAlive
+        {
+            get { return _keepAlive; }
+        }
+
+        public string RawUrl
+        {
+            get { return _rawUrl; }
+        }
+
+        public Uri Url
+        {
+            get { return _url; }
+        }
+
+        public string UserAgent 
+        {
+            get { return _userAgent; }
+        }
+
+        public NameValueCollection QueryString
+        {
+            get { return _queryString; }
+        }
+
+        public OSHttpRequest()
+        {
+        }
+
+        public OSHttpRequest(HttpListenerRequest req)
+        {
+            _acceptTypes = req.AcceptTypes;
+            _contentEncoding = req.ContentEncoding;
+            _contentLength64 = req.ContentLength64;
+            _contentType = req.ContentType;
+            _cookies = req.Cookies;
+            _headers = req.Headers;
+            _httpMethod = req.HttpMethod;
+            _inputStream = req.InputStream;
+            _isSecureConnection = req.IsSecureConnection;
+            _keepAlive = req.KeepAlive;
+            _rawUrl = req.RawUrl;
+            _url = req.Url;
+            _queryString = req.QueryString;
+            _userAgent = req.UserAgent;
+        }
+    }
+}

OpenSim/Framework/Servers/OSHttpResponse.cs

@@ -0,0 +1,165 @@
+/*
+ * 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 OpenSim 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.Collections;
+using System.IO;
+using System.Net;
+using System.Text;
+
+namespace OpenSim.Framework.Servers
+{
+    public class OSHttpResponse
+    {
+        private string _contentType;
+        private bool _contentTypeSet;
+        public string ContentType 
+        {
+            get { return _contentType; }
+            set 
+            {
+                _contentType = value;
+                _contentTypeSet = true;
+            }
+        }
+        public bool IsContentTypeSet 
+        {
+            get { return _contentTypeSet; }
+        }
+
+        private long _contentLength64;
+        public long ContentLength64 
+        {
+            get { return _contentLength64; }
+            set 
+            {
+                _contentLength64 = value;
+                if (null != _resp) _resp.ContentLength64 = value;
+            }
+        }
+        
+        private Encoding _contentEncoding;
+        public Encoding ContentEncoding 
+        {
+            get { return _contentEncoding; }
+            set 
+            {
+                _contentEncoding = value;
+                if (null != _resp) _resp.ContentEncoding = value;
+            }
+        }
+
+        public WebHeaderCollection Headers;
+        public CookieCollection Cookies;
+
+        private bool _keepAlive;
+        public bool KeepAlive 
+        {
+            get { return _keepAlive; }
+            set 
+            {
+                _keepAlive = value;
+                if (null != _resp) _resp.KeepAlive = value;
+            }
+        }
+
+        public Stream OutputStream;
+
+        private string _redirectLocation;
+        public string RedirectLocation
+        {
+            get { return _redirectLocation; }
+            set 
+            {
+                _redirectLocation = value;
+                if (null != _resp) _resp.RedirectLocation = value;
+            }
+        }
+
+        private bool _sendChunked;
+        public bool SendChunked
+        {
+            get { return _sendChunked; }
+            set 
+            {
+                _sendChunked = value;
+                if (null != _resp) _resp.SendChunked = value;
+            }
+        }
+
+        private int _statusCode;
+        public int StatusCode 
+        {
+            get { return _statusCode; }
+            set 
+            {
+                _statusCode = value;
+                if (null != _resp) _resp.StatusCode = value;
+            }
+        }
+
+        private string _statusDescription;
+        public string StatusDescription 
+        {
+            get { return _statusDescription; }
+            set 
+            {
+                _statusDescription = value;
+                if (null != _resp) _resp.StatusDescription = value;
+            }
+        }
+
+        private HttpListenerResponse _resp;
+
+        public OSHttpResponse()
+        {
+        }
+
+        public OSHttpResponse(HttpListenerResponse resp)
+        {
+            ContentEncoding = resp.ContentEncoding;
+            ContentLength64 = resp.ContentLength64;
+            _contentType = resp.ContentType;
+            Headers = resp.Headers;
+            Cookies = resp.Cookies;
+            KeepAlive = resp.KeepAlive;
+            OutputStream = resp.OutputStream;
+            RedirectLocation = resp.RedirectLocation;
+            SendChunked = resp.SendChunked;
+            StatusCode = resp.StatusCode;
+            StatusDescription = resp.StatusDescription;
+
+            _contentTypeSet = false;
+
+            _resp = resp;
+        }
+
+        public void AddHeader(string key, string value)
+        {
+            Headers.Add(key, value);
+        }
+    }
+}

OpenSim/Framework/Servers/RestDeserialiseHandler.cs

@@ -26,6 +26,7 @@
  */
 
 using System.IO;
+using System.Net;
 using System.Xml;
 using System.Xml.Serialization;
 
@@ -44,7 +45,8 @@ namespace OpenSim.Framework.Servers
             m_method = method;
         }
 
-        public void Handle(string path, Stream request, Stream responseStream)
+        public void Handle(string path, Stream request, Stream responseStream, 
+                           OSHttpRequest httpRequest, OSHttpResponse httpResponse)
         {
             TRequest deserial;
             using (XmlTextReader xmlReader = new XmlTextReader(request))

OpenSim/Framework/Servers/RestStreamHandler.cs

@@ -27,6 +27,7 @@
 
 using System.IO;
 using System.Text;
+using System.Net;
 
 namespace OpenSim.Framework.Servers
 {
@@ -39,7 +40,7 @@ namespace OpenSim.Framework.Servers
             get { return m_restMethod; }
         }
 
-        public override byte[] Handle(string path, Stream request)
+        public override byte[] Handle(string path, Stream request, OSHttpRequest httpRequest, OSHttpResponse httpResponse)
         {
             Encoding encoding = Encoding.UTF8;
             StreamReader streamReader = new StreamReader(request, encoding);

OpenSim/Grid/AssetServer/RestService.cs

@@ -27,6 +27,7 @@
 
 using System;
 using System.IO;
+using System.Net;
 using System.Reflection;
 using System.Text;
 using System.Xml;
@@ -59,7 +60,8 @@ namespace OpenSim.Grid.AssetServer
             m_assetProvider = assetProvider;
         }
 
-        public override byte[] Handle(string path, Stream request)
+        public override byte[] Handle(string path, Stream request, 
+                                      OSHttpRequest httpRequest, OSHttpResponse httpResponse)
         {
             string param = GetParam(path);
             byte[] result = new byte[] {};
@@ -121,7 +123,8 @@ namespace OpenSim.Grid.AssetServer
         private OpenAsset_Main m_assetManager;
         private IAssetProvider m_assetProvider;
 
-        public override byte[] Handle(string path, Stream request)
+        public override byte[] Handle(string path, Stream request, 
+                                      OSHttpRequest httpRequest, OSHttpResponse httpResponse)
         {
             string param = GetParam(path);
 

OpenSim/Grid/MessagingServer/XMPPHTTPService.cs

@@ -27,6 +27,7 @@
 
 using System;
 using System.IO;
+using System.Net;
 using System.Reflection;
 using libsecondlife;
 using log4net;
@@ -51,7 +52,8 @@ namespace OpenSim.Grid.MessagingServer
 
         }
 
-        public override byte[] Handle(string path, Stream request)
+        public override byte[] Handle(string path, Stream request, 
+                                      OSHttpRequest httpRequest, OSHttpResponse httpResponse)
         {
             string param = GetParam(path);
             byte[] result = new byte[] {};
@@ -84,7 +86,8 @@ namespace OpenSim.Grid.MessagingServer
     {
         private static readonly ILog m_log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
 
-        public override byte[] Handle(string path, Stream request)
+        public override byte[] Handle(string path, Stream request, 
+                                      OSHttpRequest httpRequest, OSHttpResponse httpResponse)
         {
             string param = GetParam(path);
 

OpenSim/Region/Application/OpenSimMain.cs

@@ -28,6 +28,7 @@
 using System;
 using System.Collections.Generic;
 using System.IO;
+using System.Net;
 using System.Reflection;
 using System.Text;
 using System.Threading;
@@ -681,7 +682,8 @@ namespace OpenSim
         /// </summary>
         protected class SimStatusHandler : IStreamedRequestHandler
         {
-            public byte[] Handle(string path, Stream request)
+            public byte[] Handle(string path, Stream request, 
+                                 OSHttpRequest httpRequest, OSHttpResponse httpResponse)
             {
                 return Encoding.UTF8.GetBytes("OK");
             }