SynchronousRestObjectRequester.cs 4.7 KB

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  1. /*
  2. * Copyright (c) Contributors, http://opensimulator.org/
  3. * See CONTRIBUTORS.TXT for a full list of copyright holders.
  4. *
  5. * Redistribution and use in source and binary forms, with or without
  6. * modification, are permitted provided that the following conditions are met:
  7. * * Redistributions of source code must retain the above copyright
  8. * notice, this list of conditions and the following disclaimer.
  9. * * Redistributions in binary form must reproduce the above copyright
  10. * notice, this list of conditions and the following disclaimer in the
  11. * documentation and/or other materials provided with the distribution.
  12. * * Neither the name of the OpenSimulator Project nor the
  13. * names of its contributors may be used to endorse or promote products
  14. * derived from this software without specific prior written permission.
  15. *
  16. * THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY
  17. * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  18. * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  19. * DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY
  20. * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  21. * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  22. * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  23. * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  24. * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  25. * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  26. */
  27. using System;
  28. using System.IO;
  29. using System.Net;
  30. using System.Text;
  31. using System.Xml;
  32. using System.Xml.Serialization;
  33. namespace OpenSim.Framework.Servers.HttpServer
  34. {
  35. public class SynchronousRestObjectPoster
  36. {
  37. [Obsolete]
  38. public static TResponse BeginPostObject<TRequest, TResponse>(string verb, string requestUrl, TRequest obj)
  39. {
  40. return SynchronousRestObjectRequester.MakeRequest<TRequest, TResponse>(verb, requestUrl, obj);
  41. }
  42. }
  43. public class SynchronousRestObjectRequester
  44. {
  45. /// <summary>
  46. /// Perform a synchronous REST request.
  47. /// </summary>
  48. /// <param name="verb"></param>
  49. /// <param name="requestUrl"></param>
  50. /// <param name="obj"> </param>
  51. /// <returns></returns>
  52. ///
  53. /// <exception cref="System.Net.WebException">Thrown if we encounter a network issue while posting
  54. /// the request. You'll want to make sure you deal with this as they're not uncommon</exception>
  55. public static TResponse MakeRequest<TRequest, TResponse>(string verb, string requestUrl, TRequest obj)
  56. {
  57. Type type = typeof (TRequest);
  58. TResponse deserial = default(TResponse);
  59. WebRequest request = WebRequest.Create(requestUrl);
  60. request.Method = verb;
  61. if ((verb == "POST") || (verb == "PUT"))
  62. {
  63. request.ContentType = "text/xml";
  64. MemoryStream buffer = new MemoryStream();
  65. XmlWriterSettings settings = new XmlWriterSettings();
  66. settings.Encoding = Encoding.UTF8;
  67. using (XmlWriter writer = XmlWriter.Create(buffer, settings))
  68. {
  69. XmlSerializer serializer = new XmlSerializer(type);
  70. serializer.Serialize(writer, obj);
  71. writer.Flush();
  72. }
  73. int length = (int) buffer.Length;
  74. request.ContentLength = length;
  75. Stream requestStream = null;
  76. try
  77. {
  78. requestStream = request.GetRequestStream();
  79. requestStream.Write(buffer.ToArray(), 0, length);
  80. }
  81. catch (Exception)
  82. {
  83. return deserial;
  84. }
  85. finally
  86. {
  87. if (requestStream != null)
  88. requestStream.Close();
  89. }
  90. }
  91. try
  92. {
  93. using (WebResponse resp = request.GetResponse())
  94. {
  95. if (resp.ContentLength > 0)
  96. {
  97. Stream respStream = resp.GetResponseStream();
  98. XmlSerializer deserializer = new XmlSerializer(typeof(TResponse));
  99. deserial = (TResponse)deserializer.Deserialize(respStream);
  100. respStream.Close();
  101. }
  102. }
  103. }
  104. catch (System.InvalidOperationException)
  105. {
  106. // This is what happens when there is invalid XML
  107. }
  108. return deserial;
  109. }
  110. }
  111. }