mcs/class/System.ServiceModel/System.ServiceModel.Channels/HttpRequestChannel.cs

   1 //
   2 // HttpRequestChannel.cs
   3 //
   4 // Author:
   5 //      Atsushi Enomoto <atsushi@ximian.com>
   6 //
   7 // Copyright (C) 2006 Novell, Inc.  http://www.novell.com
   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 using System;
  29 using System.Collections.Generic;
  30 using System.IO;
  31 using System.Net;
  32 using System.Net.Security;
  33 using System.ServiceModel;
  34 using System.ServiceModel.Description;
  35 using System.ServiceModel.Security;
  36 using System.Threading;
  37
  38 namespace System.ServiceModel.Channels
  39 {
  40         internal class HttpRequestChannel : RequestChannelBase
  41         {
  42                 HttpChannelFactory<IRequestChannel> source;
  43                 EndpointAddress address;
  44                 Uri via;
  45
  46                 WebRequest web_request;
  47
  48                 // FIXME: supply maxSizeOfHeaders.
  49                 int max_headers = 0x10000;
  50
  51                 // Constructor
  52
  53                 public HttpRequestChannel (HttpChannelFactory<IRequestChannel> factory,
  54                         EndpointAddress address, Uri via)
  55                         : base (factory)
  56                 {
  57                         this.source = factory;
  58                         this.address = address;
  59                         this.via = via;
  60                 }
  61
  62                 public int MaxSizeOfHeaders {
  63                         get { return max_headers; }
  64                 }
  65
  66                 public MessageEncoder Encoder {
  67                         get { return source.MessageEncoder; }
  68                 }
  69
  70                 public override EndpointAddress RemoteAddress {
  71                         get { return address; }
  72                 }
  73
  74                 public override Uri Via {
  75                         get { return via; }
  76                 }
  77
  78                 // Request
  79
  80                 public override Message Request (Message message, TimeSpan timeout)
  81                 {
  82                         return ProcessRequest (message, timeout);
  83                 }
  84
  85                 Message ProcessRequest (Message message, TimeSpan timeout)
  86                 {
  87                         // FIXME: is distination really like this?
  88                         Uri destination = message.Headers.To ?? Via ?? RemoteAddress.Uri;
  89
  90                         web_request = HttpWebRequest.Create (destination);
  91                         web_request.Method = "POST";
  92                         web_request.ContentType = Encoder.ContentType;
  93
  94 #if !NET_2_1 // FIXME: implement this to not depend on Timeout property
  95                         web_request.Timeout = (int) timeout.TotalMilliseconds;
  96 #endif
  97
  98                         // There is no SOAP Action/To header when AddressingVersion is None.
  99                         if (message.Version.Addressing == AddressingVersion.None) {
 100                                 if (message.Headers.Action != null) {
 101                                         web_request.Headers ["SOAPAction"] = message.Headers.Action;
 102                                         message.Headers.RemoveAll ("Action", message.Version.Addressing.Namespace);
 103                                         if (message.Headers.Action != null) throw new Exception (message.Headers.Action);
 104                                 }
 105                         }
 106
 107                         // apply HttpRequestMessageProperty if exists.
 108                         bool suppressEntityBody = false;
 109 #if !NET_2_1
 110                         string pname = HttpRequestMessageProperty.Name;
 111                         if (message.Properties.ContainsKey (pname)) {
 112                                 HttpRequestMessageProperty hp = (HttpRequestMessageProperty) message.Properties [pname];
 113                                 web_request.Headers.Add (hp.Headers);
 114                                 web_request.Method = hp.Method;
 115                                 // FIXME: do we have to handle hp.QueryString ?
 116                                 if (hp.SuppressEntityBody)
 117                                         suppressEntityBody = true;
 118                         }
 119 #endif
 120
 121                         if (!suppressEntityBody && String.Compare (web_request.Method, "GET", StringComparison.OrdinalIgnoreCase) != 0) {
 122                                 MemoryStream buffer = new MemoryStream ();
 123                                 Encoder.WriteMessage (message, buffer);
 124
 125                                 if (buffer.Length > int.MaxValue)
 126                                         throw new InvalidOperationException ("The argument message is too large.");
 127
 128 #if !NET_2_1
 129                                 web_request.ContentLength = (int) buffer.Length;
 130 #endif
 131
 132 #if NET_2_1
 133                                 // We can verify cross domain access policy
 134                                 // with full set of headers and target URL.
 135                                 if (!CrossDomainAccessManager.Current.IsAllowed (destination, web_request.Headers.AllKeys))
 136                                         throw new InvalidOperationException (String.Format ("Cross domain web service access to {0} is not allowed", destination));
 137 #endif
 138
 139                                 Stream requestStream = web_request.EndGetRequestStream (web_request.BeginGetRequestStream (null, null));
 140                                 requestStream.Write (buffer.GetBuffer (), 0, (int) buffer.Length);
 141                                 requestStream.Close ();
 142                         }
 143
 144                         WebResponse res;
 145                         Stream resstr;
 146                         try {
 147                                 res = web_request.EndGetResponse (web_request.BeginGetResponse (null, null));
 148                                 resstr = res.GetResponseStream ();
 149                         } catch (WebException we) {
 150                                 res = we.Response;
 151 #if NET_2_1 // debug
 152                                 Console.WriteLine (we);
 153 #endif
 154                                 try {
 155                                         // The response might contain SOAP fault. It might not.
 156                                         resstr = res.GetResponseStream ();
 157                                 } catch (WebException we2) {
 158 #if NET_2_1 // debug
 159                                         Console.WriteLine (we2);
 160 #endif
 161                                         throw we;
 162                                 }
 163                         }
 164
 165                         try {
 166                                 using (var responseStream = resstr) {
 167                                         MemoryStream ms = new MemoryStream ();
 168                                         byte [] b = new byte [65536];
 169                                         int n = 0;
 170
 171                                         while (true) {
 172                                                 n = responseStream.Read (b, 0, 65536);
 173                                                 if (n == 0)
 174                                                         break;
 175                                                 ms.Write (b, 0, n);
 176                                         }
 177                                         ms.Seek (0, SeekOrigin.Begin);
 178
 179                                         Message ret = Encoder.ReadMessage (
 180                                                 //responseStream, MaxSizeOfHeaders);
 181                                                 ms, MaxSizeOfHeaders, res.ContentType);
 182 /*
 183 MessageBuffer buf = ret.CreateBufferedCopy (0x10000);
 184 ret = buf.CreateMessage ();
 185 System.Xml.XmlTextWriter w = new System.Xml.XmlTextWriter (Console.Out);
 186 w.Formatting = System.Xml.Formatting.Indented;
 187 buf.CreateMessage ().WriteMessage (w);
 188 w.Close ();
 189 */
 190                                         return ret;
 191                                 }
 192                         } finally {
 193                                 res.Close ();
 194                         }
 195                 }
 196
 197                 public override IAsyncResult BeginRequest (Message message, TimeSpan timeout, AsyncCallback callback, object state)
 198                 {
 199                         ThrowIfDisposedOrNotOpen ();
 200
 201                         return new HttpChannelRequestAsyncResult (this, message, timeout, callback, state);
 202                 }
 203
 204                 public override Message EndRequest (IAsyncResult result)
 205                 {
 206                         if (result == null)
 207                                 throw new ArgumentNullException ("result");
 208                         HttpChannelRequestAsyncResult r = result as HttpChannelRequestAsyncResult;
 209                         if (r == null)
 210                                 throw new InvalidOperationException ("Wrong IAsyncResult");
 211                         r.WaitEnd ();
 212                         return r.Response;
 213                 }
 214
 215                 // Abort
 216
 217                 protected override void OnAbort ()
 218                 {
 219                         throw new NotImplementedException ();
 220                 }
 221
 222                 // Close
 223
 224                 protected override void OnClose (TimeSpan timeout)
 225                 {
 226                         if (web_request != null)
 227                                 web_request.Abort ();
 228                         web_request = null;
 229                 }
 230
 231                 protected override IAsyncResult OnBeginClose (TimeSpan timeout, AsyncCallback callback, object state)
 232                 {
 233                         throw new NotImplementedException ();
 234                 }
 235
 236                 protected override void OnEndClose (IAsyncResult result)
 237                 {
 238                         throw new NotImplementedException ();
 239                 }
 240
 241                 // Open
 242
 243                 protected override void OnOpen (TimeSpan timeout)
 244                 {
 245                 }
 246
 247                 protected override IAsyncResult OnBeginOpen (TimeSpan timeout, AsyncCallback callback, object state)
 248                 {
 249                         throw new NotImplementedException ();
 250                 }
 251
 252                 protected override void OnEndOpen (IAsyncResult result)
 253                 {
 254                         throw new NotImplementedException ();
 255                 }
 256
 257                 class HttpChannelRequestAsyncResult : IAsyncResult
 258                 {
 259                         HttpRequestChannel channel;
 260                         Message message;
 261                         TimeSpan timeout;
 262                         AsyncCallback callback;
 263                         object state;
 264                         AutoResetEvent wait;
 265                         bool done, waiting;
 266                         Message response;
 267                         Exception error;
 268
 269                         public HttpChannelRequestAsyncResult (HttpRequestChannel channel, Message message, TimeSpan timeout, AsyncCallback callback, object state)
 270                         {
 271                                 this.channel = channel;
 272                                 this.message = message;
 273                                 this.timeout = timeout;
 274                                 this.callback = callback;
 275                                 this.state = state;
 276
 277                                 wait = new AutoResetEvent (false);
 278                                 Thread t = new Thread (delegate () {
 279                                         try {
 280                                                 response = channel.ProcessRequest (message, timeout);
 281                                                 if (callback != null)
 282                                                         callback (this);
 283                                         } catch (Exception ex) {
 284                                                 error = ex;
 285                                         } finally {
 286                                                 done = true;
 287                                                 wait.Set ();
 288                                         }
 289                                 });
 290                                 t.Start ();
 291                         }
 292
 293                         public Message Response {
 294                                 get { return response; }
 295                         }
 296
 297                         public WaitHandle AsyncWaitHandle {
 298                                 get { return wait; }
 299                         }
 300
 301                         public object AsyncState {
 302                                 get { return state; }
 303                         }
 304
 305                         public bool CompletedSynchronously {
 306                                 get { return done && !waiting; }
 307                         }
 308
 309                         public bool IsCompleted {
 310                                 get { return done; }
 311                         }
 312
 313                         public void WaitEnd ()
 314                         {
 315                                 if (!done) {
 316                                         waiting = true;
 317                                         wait.WaitOne (timeout, true);
 318                                 }
 319                                 if (error != null)
 320                                         throw error;
 321                         }
 322                 }
 323         }
 324 }