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HeloServicesConnector.cs 4.3 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 log4net;
  28. using System;
  29. using System.Net;
  30. using System.Reflection;
  31. using Nini.Config;
  32. namespace OpenSim.Services.Connectors
  33. {
  34. public class HeloServicesConnector
  35. {
  36. private static readonly ILog m_log =
  37. LogManager.GetLogger(
  38. MethodBase.GetCurrentMethod().DeclaringType);
  39. private string m_ServerURI = String.Empty;
  40. public HeloServicesConnector()
  41. {
  42. }
  43. public HeloServicesConnector(string serverURI)
  44. {
  45. try
  46. {
  47. Uri uri;
  48. if (!serverURI.EndsWith("="))
  49. {
  50. // Let's check if this is a valid URI, because it may not be
  51. uri = new Uri(serverURI);
  52. m_ServerURI = serverURI.TrimEnd('/') + "/helo/";
  53. }
  54. else
  55. {
  56. // Simian sends malformed urls like this:
  57. // http://valley.virtualportland.org/simtest/Grid/?id=
  58. //
  59. uri = new Uri(serverURI + "xxx");
  60. if (uri.Query == string.Empty)
  61. m_ServerURI = serverURI.TrimEnd('/') + "/helo/";
  62. else
  63. {
  64. serverURI = serverURI + "xxx";
  65. m_ServerURI = serverURI.Replace(uri.Query, "");
  66. m_ServerURI = m_ServerURI.TrimEnd('/') + "/helo/";
  67. }
  68. }
  69. }
  70. catch (UriFormatException)
  71. {
  72. m_log.WarnFormat("[HELO SERVICE]: Malformed URL {0}", serverURI);
  73. }
  74. }
  75. public virtual string Helo()
  76. {
  77. if (String.IsNullOrEmpty(m_ServerURI))
  78. {
  79. m_log.WarnFormat("[HELO SERVICE]: Unable to invoke HELO due to empty URL");
  80. return String.Empty;
  81. }
  82. try
  83. {
  84. HttpWebRequest req = (HttpWebRequest)HttpWebRequest.Create(m_ServerURI);
  85. // Eventually we need to switch to HEAD
  86. /* req.Method = "HEAD"; */
  87. using (WebResponse response = req.GetResponse())
  88. {
  89. if (response.Headers.Get("X-Handlers-Provided") == null) // just in case this ever returns a null
  90. return string.Empty;
  91. return response.Headers.Get("X-Handlers-Provided");
  92. }
  93. }
  94. catch (Exception e)
  95. {
  96. m_log.DebugFormat("[HELO SERVICE]: Unable to perform HELO request to {0}: {1}", m_ServerURI, e.Message);
  97. }
  98. // fail
  99. return string.Empty;
  100. }
  101. }
  102. }