mcs/class/System.Runtime.Remoting/System.Runtime.Remoting.Channels.Http/HttpHelper.cs

   1 //==========================================================================
   2 //  File:       HttpHelper.cs
   3 //
   4 //  Summary:    Implements Helper internal class for transmission over HTTP.
   5 //
   6 //  Classes:    internal  HttpHelper
   7 //
   8 //      By :
   9 //              Ahmad    Tantawy        popsito82@hotmail.com
  10 //              Ahmad    Kadry          kadrianoz@hotmail.com
  11 //              Hussein  Mehanna        hussein_mehanna@hotmail.com
  12 //
  13 //==========================================================================
  14
  15 //
  16 // Permission is hereby granted, free of charge, to any person obtaining
  17 // a copy of this software and associated documentation files (the
  18 // "Software"), to deal in the Software without restriction, including
  19 // without limitation the rights to use, copy, modify, merge, publish,
  20 // distribute, sublicense, and/or sell copies of the Software, and to
  21 // permit persons to whom the Software is furnished to do so, subject to
  22 // the following conditions:
  23 //
  24 // The above copyright notice and this permission notice shall be
  25 // included in all copies or substantial portions of the Software.
  26 //
  27 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  28 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  29 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  30 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  31 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  32 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  33 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  34 //
  35
  36
  37 using System;
  38 using System.Globalization;
  39 using System.IO;
  40 using System.Net;
  41 using System.Text.RegularExpressions;
  42
  43 namespace System.Runtime.Remoting.Channels.Http
  44 {
  45         internal class HttpHelper
  46         {
  47                 public static string Parse(string URL , out string ObjectURI)
  48                 {
  49                         int Pos;
  50                         ObjectURI = null;
  51                         string ChannelURI = null;
  52
  53                         Pos = IndexOfChannelUri (URL);
  54                         if(Pos > 0)
  55                         {
  56                                 Pos = URL.IndexOf("/", Pos);
  57                                 if(Pos >= 0)
  58                                 {
  59                                         ObjectURI = URL.Substring(Pos);
  60                                         ChannelURI = URL.Substring(0, Pos);
  61                                 }
  62                                 else ChannelURI = URL;
  63                         }
  64                         return ChannelURI;
  65
  66                 }
  67
  68                 static int IndexOfChannelUri(string URL)
  69                 {
  70                         CompareInfo ci = CultureInfo.InvariantCulture.CompareInfo;
  71
  72                         if (ci.IsPrefix (URL, "http://", CompareOptions.IgnoreCase))
  73                                 return "http://".Length;
  74
  75                         if (ci.IsPrefix (URL, "https://", CompareOptions.IgnoreCase))
  76                                 return "https://".Length;
  77
  78                         return -1;
  79                 }
  80
  81                 public static bool StartsWithHttp (string url)
  82                 {
  83                         return IndexOfChannelUri (url) > 0;
  84                 }
  85
  86                 public static void CopyStream (Stream inStream, Stream outStream)
  87                 {
  88                         byte[] buffer = new byte [1024];
  89
  90                         int nr;
  91                         while ((nr = inStream.Read (buffer, 0, buffer.Length)) > 0)
  92                                 outStream.Write (buffer, 0, nr);
  93
  94                         outStream.Flush ();
  95
  96                         if (outStream.CanSeek)
  97                                 outStream.Seek (0,SeekOrigin.Begin);
  98                 }
  99
 100                 public static String GetHostName()
 101                 {
 102                                 string hostName = Dns.GetHostName();
 103
 104                                 if (hostName == null)
 105                                 {
 106                                         throw new ArgumentNullException("hostName");
 107                                 }
 108
 109                         return hostName;
 110                 } // GetHostName
 111
 112                 public static String GetMachineName()
 113                 {
 114
 115                         String machineName = GetHostName();
 116                         if (machineName != null)
 117                                 machineName= Dns.GetHostByName(machineName).HostName;
 118
 119                         if (machineName== null)
 120                         {
 121                                 throw new ArgumentNullException("machine");
 122                         }
 123
 124                         return machineName;
 125                 }
 126         }
 127 }