1 files changed, 335 insertions, 0 deletions

diff --git a/OpenSim/Framework/WebUtil.cs b/OpenSim/Framework/WebUtil.cs
index 1feeeb3..64cd014 100644
--- a/OpenSim/Framework/WebUtil.cs
+++ b/OpenSim/Framework/WebUtil.cs
@@ -36,6 +36,9 @@ using System.Net.Security;
 using System.Reflection;
 using System.Text;
 using System.Web;
+using System.Xml;
+using System.Xml.Serialization;
+
 using log4net;
 using OpenSim.Framework.Servers.HttpServer;
 using OpenMetaverse.StructuredData;
@@ -625,4 +628,336 @@ namespace OpenSim.Framework
 
 
     }
+
+    public static class AsynchronousRestObjectRequester
+    {
+        private static readonly ILog m_log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
+
+        /// <summary>
+        /// Perform an asynchronous REST request.
+        /// </summary>
+        /// <param name="verb">GET or POST</param>
+        /// <param name="requestUrl"></param>
+        /// <param name="obj"></param>
+        /// <param name="action"></param>
+        /// <returns></returns>
+        ///
+        /// <exception cref="System.Net.WebException">Thrown if we encounter a
+        /// network issue while posting the request.  You'll want to make
+        /// sure you deal with this as they're not uncommon</exception>
+        //
+        public static void MakeRequest<TRequest, TResponse>(string verb,
+                string requestUrl, TRequest obj, Action<TResponse> action)
+        {
+            //            m_log.DebugFormat("[ASYNC REQUEST]: Starting {0} {1}", verb, requestUrl);
+
+            Type type = typeof(TRequest);
+
+            WebRequest request = WebRequest.Create(requestUrl);
+            WebResponse response = null;
+            TResponse deserial = default(TResponse);
+            XmlSerializer deserializer = new XmlSerializer(typeof(TResponse));
+
+            request.Method = verb;
+
+            if (verb == "POST")
+            {
+                request.ContentType = "text/xml";
+
+                MemoryStream buffer = new MemoryStream();
+
+                XmlWriterSettings settings = new XmlWriterSettings();
+                settings.Encoding = Encoding.UTF8;
+
+                using (XmlWriter writer = XmlWriter.Create(buffer, settings))
+                {
+                    XmlSerializer serializer = new XmlSerializer(type);
+                    serializer.Serialize(writer, obj);
+                    writer.Flush();
+                }
+
+                int length = (int)buffer.Length;
+                request.ContentLength = length;
+
+                request.BeginGetRequestStream(delegate(IAsyncResult res)
+                {
+                    Stream requestStream = request.EndGetRequestStream(res);
+
+                    requestStream.Write(buffer.ToArray(), 0, length);
+                    requestStream.Close();
+
+                    request.BeginGetResponse(delegate(IAsyncResult ar)
+                    {
+                        response = request.EndGetResponse(ar);
+                        Stream respStream = null;
+                        try
+                        {
+                            respStream = response.GetResponseStream();
+                            deserial = (TResponse)deserializer.Deserialize(
+                                    respStream);
+                        }
+                        catch (System.InvalidOperationException)
+                        {
+                        }
+                        finally
+                        {
+                            // Let's not close this
+                            //buffer.Close();
+                            respStream.Close();
+                            response.Close();
+                        }
+
+                        action(deserial);
+
+                    }, null);
+                }, null);
+
+
+                return;
+            }
+
+            request.BeginGetResponse(delegate(IAsyncResult res2)
+            {
+                try
+                {
+                    // If the server returns a 404, this appears to trigger a System.Net.WebException even though that isn't
+                    // documented in MSDN
+                    response = request.EndGetResponse(res2);
+
+                    Stream respStream = null;
+                    try
+                    {
+                        respStream = response.GetResponseStream();
+                        deserial = (TResponse)deserializer.Deserialize(respStream);
+                    }
+                    catch (System.InvalidOperationException)
+                    {
+                    }
+                    finally
+                    {
+                        respStream.Close();
+                        response.Close();
+                    }
+                }
+                catch (WebException e)
+                {
+                    if (e.Status == WebExceptionStatus.ProtocolError)
+                    {
+                        if (e.Response is HttpWebResponse)
+                        {
+                            HttpWebResponse httpResponse = (HttpWebResponse)e.Response;
+
+                            if (httpResponse.StatusCode != HttpStatusCode.NotFound)
+                            {
+                                // We don't appear to be handling any other status codes, so log these feailures to that
+                                // people don't spend unnecessary hours hunting phantom bugs.
+                                m_log.DebugFormat(
+                                    "[ASYNC REQUEST]: Request {0} {1} failed with unexpected status code {2}",
+                                    verb, requestUrl, httpResponse.StatusCode);
+                            }
+                        }
+                    }
+                    else
+                    {
+                        m_log.ErrorFormat("[ASYNC REQUEST]: Request {0} {1} failed with status {2} and message {3}", verb, requestUrl, e.Status, e.Message);
+                    }
+                }
+                catch (Exception e)
+                {
+                    m_log.ErrorFormat("[ASYNC REQUEST]: Request {0} {1} failed with exception {2}", verb, requestUrl, e);
+                }
+
+                //  m_log.DebugFormat("[ASYNC REQUEST]: Received {0}", deserial.ToString());
+
+                try
+                {
+                    action(deserial);
+                }
+                catch (Exception e)
+                {
+                    m_log.ErrorFormat(
+                        "[ASYNC REQUEST]: Request {0} {1} callback failed with exception {2}", verb, requestUrl, e);
+                }
+
+            }, null);
+        }
+    }
+
+    public static class SynchronousRestFormsRequester
+    {
+        private static readonly ILog m_log =
+                LogManager.GetLogger(
+                MethodBase.GetCurrentMethod().DeclaringType);
+
+        /// <summary>
+        /// Perform a synchronous REST request.
+        /// </summary>
+        /// <param name="verb"></param>
+        /// <param name="requestUrl"></param>
+        /// <param name="obj"> </param>
+        /// <returns></returns>
+        ///
+        /// <exception cref="System.Net.WebException">Thrown if we encounter a network issue while posting
+        /// the request.  You'll want to make sure you deal with this as they're not uncommon</exception>
+        public static string MakeRequest(string verb, string requestUrl, string obj)
+        {
+            WebRequest request = WebRequest.Create(requestUrl);
+            request.Method = verb;
+            string respstring = String.Empty;
+
+            using (MemoryStream buffer = new MemoryStream())
+            {
+                if ((verb == "POST") || (verb == "PUT"))
+                {
+                    request.ContentType = "text/www-form-urlencoded";
+
+                    int length = 0;
+                    using (StreamWriter writer = new StreamWriter(buffer))
+                    {
+                        writer.Write(obj);
+                        writer.Flush();
+                    }
+
+                    length = (int)obj.Length;
+                    request.ContentLength = length;
+
+                    Stream requestStream = null;
+                    try
+                    {
+                        requestStream = request.GetRequestStream();
+                        requestStream.Write(buffer.ToArray(), 0, length);
+                    }
+                    catch (Exception e)
+                    {
+                        m_log.DebugFormat("[FORMS]: exception occured on sending request to {0}: " + e.ToString(), requestUrl);
+                    }
+                    finally
+                    {
+                        if (requestStream != null)
+                            requestStream.Close();
+                    }
+                }
+
+                try
+                {
+                    using (WebResponse resp = request.GetResponse())
+                    {
+                        if (resp.ContentLength != 0)
+                        {
+                            Stream respStream = null;
+                            try
+                            {
+                                respStream = resp.GetResponseStream();
+                                using (StreamReader reader = new StreamReader(respStream))
+                                {
+                                    respstring = reader.ReadToEnd();
+                                }
+                            }
+                            catch (Exception e)
+                            {
+                                m_log.DebugFormat("[FORMS]: exception occured on receiving reply " + e.ToString());
+                            }
+                            finally
+                            {
+                                if (respStream != null)
+                                    respStream.Close();
+                            }
+                        }
+                    }
+                }
+                catch (System.InvalidOperationException)
+                {
+                    // This is what happens when there is invalid XML
+                    m_log.DebugFormat("[FORMS]: InvalidOperationException on receiving request");
+                }
+            }
+            return respstring;
+        }
+    }
+
+    public class SynchronousRestObjectPoster
+    {
+        [Obsolete]
+        public static TResponse BeginPostObject<TRequest, TResponse>(string verb, string requestUrl, TRequest obj)
+        {
+            return SynchronousRestObjectRequester.MakeRequest<TRequest, TResponse>(verb, requestUrl, obj);
+        }
+    }
+
+    public class SynchronousRestObjectRequester
+    {
+        /// <summary>
+        /// Perform a synchronous REST request.
+        /// </summary>
+        /// <param name="verb"></param>
+        /// <param name="requestUrl"></param>
+        /// <param name="obj"> </param>
+        /// <returns></returns>
+        ///
+        /// <exception cref="System.Net.WebException">Thrown if we encounter a network issue while posting
+        /// the request.  You'll want to make sure you deal with this as they're not uncommon</exception>
+        public static TResponse MakeRequest<TRequest, TResponse>(string verb, string requestUrl, TRequest obj)
+        {
+            Type type = typeof(TRequest);
+            TResponse deserial = default(TResponse);
+
+            WebRequest request = WebRequest.Create(requestUrl);
+            request.Method = verb;
+
+            if ((verb == "POST") || (verb == "PUT"))
+            {
+                request.ContentType = "text/xml";
+
+                MemoryStream buffer = new MemoryStream();
+
+                XmlWriterSettings settings = new XmlWriterSettings();
+                settings.Encoding = Encoding.UTF8;
+
+                using (XmlWriter writer = XmlWriter.Create(buffer, settings))
+                {
+                    XmlSerializer serializer = new XmlSerializer(type);
+                    serializer.Serialize(writer, obj);
+                    writer.Flush();
+                }
+
+                int length = (int)buffer.Length;
+                request.ContentLength = length;
+
+                Stream requestStream = null;
+                try
+                {
+                    requestStream = request.GetRequestStream();
+                    requestStream.Write(buffer.ToArray(), 0, length);
+                }
+                catch (Exception)
+                {
+                    return deserial;
+                }
+                finally
+                {
+                    if (requestStream != null)
+                        requestStream.Close();
+                }
+            }
+
+            try
+            {
+                using (WebResponse resp = request.GetResponse())
+                {
+                    if (resp.ContentLength > 0)
+                    {
+                        Stream respStream = resp.GetResponseStream();
+                        XmlSerializer deserializer = new XmlSerializer(typeof(TResponse));
+                        deserial = (TResponse)deserializer.Deserialize(respStream);
+                        respStream.Close();
+                    }
+                }
+            }
+            catch (System.InvalidOperationException)
+            {
+                // This is what happens when there is invalid XML
+            }
+            return deserial;
+        }
+    }
 }