OpenSim-Test/OpenSim/Framework/Servers/HttpServer/SynchronousRestObjectRequester.cs

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using System;
using System.IO;
using System.Net;
using System.Text;
using System.Xml;
using System.Xml.Serialization;

namespace OpenSim.Framework.Servers.HttpServer
{
    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);

            WebRequest request = WebRequest.Create(requestUrl);
            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;

                Stream requestStream = request.GetRequestStream();
                requestStream.Write(buffer.ToArray(), 0, length);
            }

            TResponse deserial = default(TResponse);
            try
            {
                using (WebResponse resp = request.GetResponse())
                {
                    if (resp.ContentLength > 0)
                    {
                        XmlSerializer deserializer = new XmlSerializer(typeof(TResponse));
                        deserial = (TResponse)deserializer.Deserialize(resp.GetResponseStream());
                    }
                }
            }
            catch (System.InvalidOperationException)
            {
                // This is what happens when there is invalid XML
            }
            return deserial;
        }
    }
}