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 \r
   8 using System;\r
   9 using System.Collections;\r
  10 using System.Collections.Specialized;\r
  11 using System.Configuration;\r
  12 using System.IO;\r
  13 using System.Runtime.Serialization;\r
  14 \r
  15 namespace System.Net \r
  16 {\r
  17         [Serializable]\r
  18         public abstract class WebRequest : MarshalByRefObject, ISerializable\r
  19         {\r
  20                 static HybridDictionary prefixes = new HybridDictionary ();\r
  21                 \r
  22                 // Constructors\r
  23                 \r
  24                 static WebRequest ()\r
  25                 {\r
  26                         ConfigurationSettings.GetConfig ("system.net/webRequestModules");\r
  27                 }\r
  28                 \r
  29                 protected WebRequest () { }             \r
  30                 \r
  31                 protected WebRequest (SerializationInfo serializationInfo, StreamingContext streamingContext) \r
  32                 {\r
  33                         throw new NotSupportedException ();\r
  34                 }\r
  35                 \r
  36                 // Properties\r
  37                 \r
  38                 public virtual string ConnectionGroupName { \r
  39                         get { throw new NotSupportedException (); }\r
  40                         set { throw new NotSupportedException (); }\r
  41                 }\r
  42                 \r
  43                 public virtual long ContentLength { \r
  44                         get { throw new NotSupportedException (); }\r
  45                         set { throw new NotSupportedException (); }\r
  46                 }\r
  47                 \r
  48                 public virtual string ContentType { \r
  49                         get { throw new NotSupportedException (); }\r
  50                         set { throw new NotSupportedException (); }\r
  51                 }\r
  52                 \r
  53                 public virtual ICredentials Credentials { \r
  54                         get { throw new NotSupportedException (); }\r
  55                         set { throw new NotSupportedException (); }\r
  56                 }\r
  57                 \r
  58                 public virtual WebHeaderCollection Headers { \r
  59                         get { throw new NotSupportedException (); }\r
  60                         set { throw new NotSupportedException (); }\r
  61                 }\r
  62                 \r
  63                 public virtual string Method { \r
  64                         get { throw new NotSupportedException (); }\r
  65                         set { throw new NotSupportedException (); }\r
  66                 }\r
  67                 \r
  68                 public virtual bool PreAuthenticate { \r
  69                         get { throw new NotSupportedException (); }\r
  70                         set { throw new NotSupportedException (); }\r
  71                 }\r
  72                 \r
  73                 public virtual IWebProxy Proxy { \r
  74                         get { throw new NotSupportedException (); }\r
  75                         set { throw new NotSupportedException (); }\r
  76                 }\r
  77                 \r
  78                 public virtual Uri RequestUri { \r
  79                         get { throw new NotSupportedException (); }\r
  80                         set { throw new NotSupportedException (); }\r
  81                 }\r
  82                 \r
  83                 public virtual int Timeout { \r
  84                         get { throw new NotSupportedException (); }\r
  85                         set { throw new NotSupportedException (); }\r
  86                 }\r
  87                 \r
  88                 // Methods\r
  89                 \r
  90                 public virtual void Abort()\r
  91                 {\r
  92                         throw new NotSupportedException ();\r
  93                 }\r
  94                 \r
  95                 public virtual IAsyncResult BeginGetRequestStream (AsyncCallback callback, object state) \r
  96                 {\r
  97                         throw new NotSupportedException ();\r
  98                 }\r
  99                 \r
 100                 public virtual IAsyncResult BeginGetResponse (AsyncCallback callback, object state)\r
 101                 {\r
 102                         throw new NotSupportedException ();\r
 103                 }\r
 104 \r
 105                 public static WebRequest Create (string requestUriString) \r
 106                 {\r
 107                         if (requestUriString == null)\r
 108                                 throw new ArgumentNullException ("requestUriString");\r
 109                         return Create (new Uri (requestUriString));\r
 110                 }\r
 111                                 \r
 112                 public static WebRequest Create (Uri requestUri) \r
 113                 {\r
 114                         if (requestUri == null)\r
 115                                 throw new ArgumentNullException ("requestUri");\r
 116                         return GetCreator (requestUri.AbsoluteUri).Create (requestUri);\r
 117                 }\r
 118                 \r
 119                 public static WebRequest CreateDefault (Uri requestUri)\r
 120                 {\r
 121                         if (requestUri == null)\r
 122                                 throw new ArgumentNullException ("requestUri");\r
 123                         return GetCreator (requestUri.Scheme).Create (requestUri);\r
 124                 }\r
 125 \r
 126                 public virtual Stream EndGetRequestStream (IAsyncResult asyncResult)\r
 127                 {\r
 128                         throw new NotSupportedException ();\r
 129                 }\r
 130                 \r
 131                 public virtual WebResponse EndGetResponse (IAsyncResult asyncResult)\r
 132                 {\r
 133                         throw new NotSupportedException ();\r
 134                 }\r
 135                 \r
 136                 public virtual Stream GetRequestStream()\r
 137                 {\r
 138                         throw new NotSupportedException ();\r
 139                 }\r
 140                 \r
 141                 public virtual WebResponse GetResponse()\r
 142                 {\r
 143                         throw new NotSupportedException ();\r
 144                 }\r
 145                 \r
 146                 void ISerializable.GetObjectData (SerializationInfo serializationInfo,\r
 147                                                   StreamingContext streamingContext)\r
 148                 {\r
 149                         throw new NotSupportedException ();\r
 150                 }\r
 151 \r
 152                 public static bool RegisterPrefix (string prefix, IWebRequestCreate creator)\r
 153                 {\r
 154                         if (prefix == null)\r
 155                                 throw new ArgumentNullException("prefix");\r
 156                         if (creator == null)\r
 157                                 throw new ArgumentNullException("creator");                     \r
 158                         \r
 159                         lock (prefixes.SyncRoot) {\r
 160                                 if (prefixes.Contains (prefix))\r
 161                                         return false;\r
 162                                 prefixes.Add (prefix.ToLower (), creator);\r
 163                         }\r
 164                         return true;\r
 165                 }\r
 166                 \r
 167                 private static IWebRequestCreate GetCreator (string prefix)\r
 168                 {\r
 169                         int longestPrefix = -1;\r
 170                         IWebRequestCreate creator = null;\r
 171 \r
 172                         prefix = prefix.ToLower ();\r
 173 \r
 174                         IDictionaryEnumerator e = prefixes.GetEnumerator ();\r
 175                         while (e.MoveNext ()) {\r
 176                                 string key = e.Key as string;\r
 177 \r
 178                                 if (key.Length <= longestPrefix) \r
 179                                         continue;\r
 180                                 \r
 181                                 if (!prefix.StartsWith (key))\r
 182                                         continue;                                       \r
 183                                         \r
 184                                 longestPrefix = key.Length;\r
 185                                 creator = (IWebRequestCreate) e.Value;\r
 186                         }\r
 187                         \r
 188                         if (creator == null) \r
 189                                 throw new NotSupportedException (prefix);\r
 190                                 \r
 191                         return creator;\r
 192                 }\r
 193 \r
 194                 internal static void ClearPrefixes ()\r
 195                 {\r
 196                         prefixes.Clear ();\r
 197                 }\r
 198 \r
 199                 internal static void RemovePrefix (string prefix)\r
 200                 {\r
 201                         prefixes.Remove (prefix);\r
 202                 }\r
 203 \r
 204                 internal static void AddPrefix (string prefix, string typeName)\r
 205                 {\r
 206                         Type type = Type.GetType (typeName);\r
 207                         if (type == null)\r
 208                                 throw new ConfigurationException (String.Format ("Type {0} not found", typeName));\r
 209 \r
 210                         object o = Activator.CreateInstance (type);\r
 211                         prefixes [prefix] = o;\r
 212                 }\r
 213         }\r
 214 }\r
 215 \r