mcs/class/System/System.Net/WebRequest.cs

   1 //\r
   2 // System.Net.WebRequest\r
   3 //\r
   4 // Authors:\r
   5 //   Lawrence Pit (loz@cable.a2000.nl)\r
   6 //\r
   7
   8 //
   9 // Permission is hereby granted, free of charge, to any person obtaining
  10 // a copy of this software and associated documentation files (the
  11 // "Software"), to deal in the Software without restriction, including
  12 // without limitation the rights to use, copy, modify, merge, publish,
  13 // distribute, sublicense, and/or sell copies of the Software, and to
  14 // permit persons to whom the Software is furnished to do so, subject to
  15 // the following conditions:
  16 //
  17 // The above copyright notice and this permission notice shall be
  18 // included in all copies or substantial portions of the Software.
  19 //
  20 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  21 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  22 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  23 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  24 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  25 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  26 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  27 //
  28 \r
  29 using System;\r
  30 using System.Collections;\r
  31 using System.Collections.Specialized;\r
  32 using System.Configuration;\r
  33 using System.IO;\r
  34 using System.Runtime.Serialization;\r
  35 #if NET_2_0\r
  36 using System.Net.Configuration;\r
  37 #endif\r
  38 \r
  39 namespace System.Net \r
  40 {\r
  41         [Serializable]\r
  42         public abstract class WebRequest : MarshalByRefObject, ISerializable\r
  43         {\r
  44                 static HybridDictionary prefixes = new HybridDictionary ();\r
  45                 \r
  46                 // Constructors\r
  47                 \r
  48                 static WebRequest ()\r
  49                 {\r
  50 #if NET_2_0 && CONFIGURATION_DEP\r
  51                         object cfg = ConfigurationManager.GetSection ("system.net/webRequestModules");\r
  52                         WebRequestModulesSection s = cfg as WebRequestModulesSection;\r
  53                         if (s != null) {\r
  54                                 foreach (WebRequestModuleElement el in\r
  55                                          s.WebRequestModules)\r
  56                                         AddPrefix (el.Prefix, el.Type);\r
  57                                 return;\r
  58                         }\r
  59 #endif\r
  60                         ConfigurationSettings.GetConfig ("system.net/webRequestModules");\r
  61                 }\r
  62                 \r
  63                 protected WebRequest ()
  64                 {
  65                 }\r
  66                 \r
  67                 protected WebRequest (SerializationInfo serializationInfo, StreamingContext streamingContext) \r
  68                 {\r
  69                 }\r
  70                 \r
  71                 // Properties\r
  72                 \r
  73                 public virtual string ConnectionGroupName { \r
  74                         get { throw new NotImplementedException (); }\r
  75                         set { throw new NotImplementedException (); }\r
  76                 }\r
  77                 \r
  78                 public virtual long ContentLength { \r
  79                         get { throw new NotImplementedException (); }\r
  80                         set { throw new NotImplementedException (); }\r
  81                 }\r
  82                 \r
  83                 public virtual string ContentType { \r
  84                         get { throw new NotImplementedException (); }\r
  85                         set { throw new NotImplementedException (); }\r
  86                 }\r
  87                 \r
  88                 public virtual ICredentials Credentials { \r
  89                         get { throw new NotImplementedException (); }\r
  90                         set { throw new NotImplementedException (); }\r
  91                 }\r
  92                 \r
  93                 public virtual WebHeaderCollection Headers { \r
  94                         get { throw new NotImplementedException (); }\r
  95                         set { throw new NotImplementedException (); }\r
  96                 }\r
  97                 \r
  98                 public virtual string Method { \r
  99                         get { throw new NotImplementedException (); }\r
 100                         set { throw new NotImplementedException (); }\r
 101                 }\r
 102                 \r
 103                 public virtual bool PreAuthenticate { \r
 104                         get { throw new NotImplementedException (); }\r
 105                         set { throw new NotImplementedException (); }\r
 106                 }\r
 107                 \r
 108                 public virtual IWebProxy Proxy { \r
 109                         get { throw new NotImplementedException (); }\r
 110                         set { throw new NotImplementedException (); }\r
 111                 }\r
 112                 \r
 113                 public virtual Uri RequestUri { \r
 114                         get { throw new NotImplementedException (); }\r
 115                 }\r
 116                 \r
 117                 public virtual int Timeout { \r
 118                         get { throw new NotImplementedException (); }\r
 119                         set { throw new NotImplementedException (); }\r
 120                 }\r
 121                 \r
 122                 // Methods\r
 123                 \r
 124                 public virtual void Abort()\r
 125                 {\r
 126                         throw new NotImplementedException ();\r
 127                 }\r
 128                 \r
 129                 public virtual IAsyncResult BeginGetRequestStream (AsyncCallback callback, object state) \r
 130                 {\r
 131                         throw new NotImplementedException ();\r
 132                 }\r
 133                 \r
 134                 public virtual IAsyncResult BeginGetResponse (AsyncCallback callback, object state)\r
 135                 {\r
 136                         throw new NotImplementedException ();\r
 137                 }\r
 138 \r
 139                 public static WebRequest Create (string requestUriString) \r
 140                 {\r
 141                         if (requestUriString == null)\r
 142                                 throw new ArgumentNullException ("requestUriString");\r
 143                         return Create (new Uri (requestUriString));\r
 144                 }\r
 145                                 \r
 146                 public static WebRequest Create (Uri requestUri) \r
 147                 {\r
 148                         if (requestUri == null)\r
 149                                 throw new ArgumentNullException ("requestUri");\r
 150                         return GetCreator (requestUri.AbsoluteUri).Create (requestUri);\r
 151                 }\r
 152                 \r
 153                 public static WebRequest CreateDefault (Uri requestUri)\r
 154                 {\r
 155                         if (requestUri == null)\r
 156                                 throw new ArgumentNullException ("requestUri");\r
 157                         return GetCreator (requestUri.Scheme).Create (requestUri);\r
 158                 }\r
 159 \r
 160                 public virtual Stream EndGetRequestStream (IAsyncResult asyncResult)\r
 161                 {\r
 162                         throw new NotImplementedException ();\r
 163                 }\r
 164                 \r
 165                 public virtual WebResponse EndGetResponse (IAsyncResult asyncResult)\r
 166                 {\r
 167                         throw new NotImplementedException ();\r
 168                 }\r
 169                 \r
 170                 public virtual Stream GetRequestStream()\r
 171                 {\r
 172                         throw new NotImplementedException ();\r
 173                 }\r
 174                 \r
 175                 public virtual WebResponse GetResponse()\r
 176                 {\r
 177                         throw new NotImplementedException ();\r
 178                 }\r
 179                 \r
 180                 void ISerializable.GetObjectData (SerializationInfo serializationInfo,\r
 181                                                   StreamingContext streamingContext)\r
 182                 {\r
 183                         throw new NotSupportedException ();\r
 184                 }\r
 185 \r
 186                 public static bool RegisterPrefix (string prefix, IWebRequestCreate creator)\r
 187                 {\r
 188                         if (prefix == null)\r
 189                                 throw new ArgumentNullException("prefix");\r
 190                         if (creator == null)\r
 191                                 throw new ArgumentNullException("creator");                     \r
 192                         \r
 193                         lock (prefixes.SyncRoot) {\r
 194                                 string lowerCasePrefix = prefix.ToLower ();\r
 195                                 if (prefixes.Contains (lowerCasePrefix))\r
 196                                         return false;\r
 197                                 prefixes.Add (lowerCasePrefix, creator);\r
 198                         }\r
 199                         return true;\r
 200                 }\r
 201                 \r
 202                 private static IWebRequestCreate GetCreator (string prefix)\r
 203                 {\r
 204                         int longestPrefix = -1;\r
 205                         IWebRequestCreate creator = null;\r
 206 \r
 207                         prefix = prefix.ToLower ();\r
 208 \r
 209                         IDictionaryEnumerator e = prefixes.GetEnumerator ();\r
 210                         while (e.MoveNext ()) {\r
 211                                 string key = e.Key as string;\r
 212 \r
 213                                 if (key.Length <= longestPrefix) \r
 214                                         continue;\r
 215                                 \r
 216                                 if (!prefix.StartsWith (key))\r
 217                                         continue;                                       \r
 218                                         \r
 219                                 longestPrefix = key.Length;\r
 220                                 creator = (IWebRequestCreate) e.Value;\r
 221                         }\r
 222                         \r
 223                         if (creator == null) \r
 224                                 throw new NotSupportedException (prefix);\r
 225                                 \r
 226                         return creator;\r
 227                 }\r
 228 \r
 229                 internal static void ClearPrefixes ()\r
 230                 {\r
 231                         prefixes.Clear ();\r
 232                 }\r
 233 \r
 234                 internal static void RemovePrefix (string prefix)\r
 235                 {\r
 236                         prefixes.Remove (prefix);\r
 237                 }\r
 238 \r
 239                 internal static void AddPrefix (string prefix, string typeName)\r
 240                 {\r
 241                         Type type = Type.GetType (typeName);\r
 242                         if (type == null)\r
 243                                 throw new ConfigurationException (String.Format ("Type {0} not found", typeName));\r
 244                         AddPrefix (prefix, type);\r
 245                 }\r
 246 \r
 247                 internal static void AddPrefix (string prefix, Type type)\r
 248                 {\r
 249                         object o = Activator.CreateInstance (type, true);\r
 250                         prefixes [prefix] = o;\r
 251                 }\r
 252         }\r
 253 }\r
 254 \r