mcs/class/System.ServiceModel/System.ServiceModel.Channels.Http/HttpReplyChannel.cs

   1 //
   2 // HttpReplyChannel.cs
   3 //
   4 // Author:
   5 //      Atsushi Enomoto <atsushi@ximian.com>
   6 //
   7 // Copyright (C) 2010 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.Collections.Specialized;
  31 using System.IO;
  32 using System.Net;
  33 using System.ServiceModel;
  34 using System.Text;
  35 using System.Threading;
  36
  37 namespace System.ServiceModel.Channels.Http
  38 {
  39         internal class HttpReplyChannel : InternalReplyChannelBase
  40         {
  41                 HttpChannelListener<IReplyChannel> source;
  42                 RequestContext reqctx;
  43
  44                 public HttpReplyChannel (HttpChannelListener<IReplyChannel> listener)
  45                         : base (listener)
  46                 {
  47                         this.source = listener;
  48                 }
  49
  50                 public MessageEncoder Encoder {
  51                         get { return source.MessageEncoder; }
  52                 }
  53
  54                 internal MessageVersion MessageVersion {
  55                         get { return source.MessageEncoder.MessageVersion; }
  56                 }
  57
  58                 public override RequestContext ReceiveRequest (TimeSpan timeout)
  59                 {
  60                         RequestContext ctx;
  61                         if (!TryReceiveRequest (timeout, out ctx))
  62                                 throw new TimeoutException ();
  63                         return ctx;
  64                 }
  65
  66                 protected override void OnOpen (TimeSpan timeout)
  67                 {
  68                 }
  69
  70                 protected override void OnAbort ()
  71                 {
  72                         AbortConnections (TimeSpan.Zero);
  73                         base.OnAbort (); // FIXME: remove it. The base is wrong. But it is somehow required to not block some tests.
  74                 }
  75
  76                 public override bool CancelAsync (TimeSpan timeout)
  77                 {
  78                         AbortConnections (timeout);
  79                         // FIXME: this wait is sort of hack (because it should not be required), but without it some tests are blocked.
  80                         // This hack even had better be moved to base.CancelAsync().
  81                         if (CurrentAsyncResult != null)
  82                                 CurrentAsyncResult.AsyncWaitHandle.WaitOne (TimeSpan.FromMilliseconds (300));
  83                         return base.CancelAsync (timeout);
  84                 }
  85
  86                 void AbortConnections (TimeSpan timeout)
  87                 {
  88                         if (reqctx != null)
  89                                 reqctx.Close (timeout);
  90                 }
  91
  92                 bool close_started;
  93
  94                 protected override void OnClose (TimeSpan timeout)
  95                 {
  96                         if (close_started)
  97                                 return;
  98                         close_started = true;
  99                         DateTime start = DateTime.Now;
 100
 101                         // FIXME: consider timeout
 102                         AbortConnections (timeout - (DateTime.Now - start));
 103
 104                         base.OnClose (timeout - (DateTime.Now - start));
 105                 }
 106
 107                 protected string GetHeaderItem (string raw)
 108                 {
 109                         if (raw == null || raw.Length == 0)
 110                                 return raw;
 111                         switch (raw [0]) {
 112                         case '\'':
 113                         case '"':
 114                                 if (raw [raw.Length - 1] == raw [0])
 115                                         return raw.Substring (1, raw.Length - 2);
 116                                 // FIXME: is it simply an error?
 117                                 break;
 118                         }
 119                         return raw;
 120                 }
 121
 122                 protected HttpRequestMessageProperty CreateRequestProperty (HttpContextInfo ctxi)
 123                 {
 124                         var query = ctxi.Request.Url.Query;
 125                         var prop = new HttpRequestMessageProperty ();
 126                         prop.Method = ctxi.Request.HttpMethod;
 127                         prop.QueryString = query.StartsWith ("?") ? query.Substring (1) : query;
 128                         // FIXME: prop.SuppressEntityBody
 129                         prop.Headers.Add (ctxi.Request.Headers);
 130                         return prop;
 131                 }
 132
 133                 public override bool TryReceiveRequest (TimeSpan timeout, out RequestContext context)
 134                 {
 135                         context = null;
 136                         HttpContextInfo ctxi;
 137                         if (!source.ListenerManager.TryDequeueRequest (source.ChannelDispatcher, timeout, out ctxi))
 138                                 return false;
 139                         if (ctxi == null)
 140                                 return true; // returning true, yet context is null. This happens at closing phase.
 141
 142                         Message msg = null;
 143
 144                         if (ctxi.Request.HttpMethod == "POST") {
 145                                 msg = CreatePostMessage (ctxi);
 146                                 if (msg == null)
 147                                         return false;
 148                         } else if (ctxi.Request.HttpMethod == "GET")
 149                                 msg = Message.CreateMessage (MessageVersion.None, null); // HTTP GET-based request
 150
 151                         if (msg.Headers.To == null)
 152                                 msg.Headers.To = ctxi.Request.Url;
 153                         msg.Properties.Add ("Via", LocalAddress.Uri);
 154                         msg.Properties.Add (HttpRequestMessageProperty.Name, CreateRequestProperty (ctxi));
 155
 156                         context = new HttpRequestContext (this, ctxi, msg);
 157                         reqctx = context;
 158                         return true;
 159                 }
 160
 161                 protected Message CreatePostMessage (HttpContextInfo ctxi)
 162                 {
 163                         if (ctxi.Response.StatusCode != 200) { // it's already invalid.
 164                                 ctxi.Close ();
 165                                 return null;
 166                         }
 167
 168                         if (!Encoder.IsContentTypeSupported (ctxi.Request.ContentType)) {
 169                                 ctxi.Response.StatusCode = (int) HttpStatusCode.UnsupportedMediaType;
 170                                 ctxi.Response.StatusDescription = String.Format (
 171                                                 "Expected content-type '{0}' but got '{1}'", Encoder.ContentType, ctxi.Request.ContentType);
 172                                 ctxi.Close ();
 173
 174                                 return null;
 175                         }
 176
 177                         // FIXME: supply maxSizeOfHeaders.
 178                         int maxSizeOfHeaders = 0x10000;
 179
 180 #if false // FIXME: enable it, once duplex callback test gets passed.
 181                         Stream stream = ctxi.Request.InputStream;
 182                         if (source.Source.TransferMode == TransferMode.Buffered) {
 183                                 if (ctxi.Request.ContentLength64 <= 0)
 184                                         throw new ArgumentException ("This HTTP channel is configured to use buffered mode, and thus expects Content-Length sent to the listener");
 185                                 long size = 0;
 186                                 var ms = new MemoryStream ();
 187                                 var buf = new byte [0x1000];
 188                                 while (size < ctxi.Request.ContentLength64) {
 189                                         if ((size += stream.Read (buf, 0, 0x1000)) > source.Source.MaxBufferSize)
 190                                                 throw new QuotaExceededException ("Message quota exceeded");
 191                                         ms.Write (buf, 0, (int) (size - ms.Length));
 192                                 }
 193                                 ms.Position = 0;
 194                                 stream = ms;
 195                         }
 196
 197                         var msg = Encoder.ReadMessage (
 198                                 stream, maxSizeOfHeaders, ctxi.Request.ContentType);
 199 #else
 200                         var msg = Encoder.ReadMessage (
 201                                 ctxi.Request.InputStream, maxSizeOfHeaders, ctxi.Request.ContentType);
 202 #endif
 203
 204                         if (MessageVersion.Envelope.Equals (EnvelopeVersion.Soap11) ||
 205                             MessageVersion.Addressing.Equals (AddressingVersion.None)) {
 206                                 string action = GetHeaderItem (ctxi.Request.Headers ["SOAPAction"]);
 207                                 if (action != null) {
 208                                         if (action.Length > 2 && action [0] == '"' && action [action.Length] == '"')
 209                                                 action = action.Substring (1, action.Length - 2);
 210                                         msg.Headers.Action = action;
 211                                 }
 212                         }
 213
 214                         return msg;
 215                 }
 216
 217                 public override bool WaitForRequest (TimeSpan timeout)
 218                 {
 219                         throw new NotImplementedException ();
 220                 }
 221         }
 222 }