class/System.Web.Services/System.Web.Services.Protocols/HttpSimpleClientProtocol.cs

   1 //
   2 // System.Web.Services.Protocols.HttpSimpleClientProtocol.cs
   3 //
   4 // Author:
   5 //   Tim Coleman (tim@timcoleman.com)
   6 //   Lluis Sanchez Gual (lluis@ximian.com)
   7 //
   8 // Copyright (C) Tim Coleman, 2002
   9 //
  10
  11 //
  12 // Permission is hereby granted, free of charge, to any person obtaining
  13 // a copy of this software and associated documentation files (the
  14 // "Software"), to deal in the Software without restriction, including
  15 // without limitation the rights to use, copy, modify, merge, publish,
  16 // distribute, sublicense, and/or sell copies of the Software, and to
  17 // permit persons to whom the Software is furnished to do so, subject to
  18 // the following conditions:
  19 //
  20 // The above copyright notice and this permission notice shall be
  21 // included in all copies or substantial portions of the Software.
  22 //
  23 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  24 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  25 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  26 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  27 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  28 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  29 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  30 //
  31
  32 using System.Web.Services;
  33 using System.Net;
  34 using System.IO;
  35 using System.Threading;
  36
  37 namespace System.Web.Services.Protocols {
  38 #if NET_2_0
  39         [System.Runtime.InteropServices.ComVisible (true)]
  40 #endif
  41         public abstract class HttpSimpleClientProtocol : HttpWebClientProtocol {
  42
  43                 #region Fields
  44
  45                 internal HttpSimpleTypeStubInfo TypeStub;
  46
  47                 #endregion // Fields
  48
  49                 #region Constructors
  50
  51                 protected HttpSimpleClientProtocol ()
  52                 {
  53                 }
  54
  55                 #endregion // Constructors
  56
  57                 #region Methods
  58
  59                 protected IAsyncResult BeginInvoke (string methodName, string requestUrl, object[] parameters, AsyncCallback callback, object asyncState)
  60                 {
  61                         HttpSimpleMethodStubInfo method = (HttpSimpleMethodStubInfo) TypeStub.GetMethod (methodName);
  62                         SimpleWebClientAsyncResult ainfo = null;
  63
  64                         try
  65                         {
  66                                 MimeParameterWriter parameterWriter = (MimeParameterWriter) method.ParameterWriterType.Create ();
  67                                 string url = parameterWriter.GetRequestUrl (requestUrl, parameters);
  68                                 WebRequest req = GetWebRequest (new Uri(url));
  69
  70                                 ainfo = new SimpleWebClientAsyncResult (req, callback, asyncState);
  71                                 ainfo.Parameters = parameters;
  72                                 ainfo.ParameterWriter = parameterWriter;
  73                                 ainfo.Method = method;
  74
  75                                 ainfo.Request = req;
  76                                 ainfo.Request.BeginGetRequestStream (new AsyncCallback (AsyncGetRequestStreamDone), ainfo);
  77                                 RegisterMapping (asyncState, ainfo);
  78                         }
  79                         catch (Exception ex)
  80                         {
  81                                 if (ainfo != null)
  82                                         ainfo.SetCompleted (null, ex, false);
  83                                 else
  84                                         throw ex;
  85                         }
  86
  87                         return ainfo;
  88
  89                 }
  90
  91                 void AsyncGetRequestStreamDone (IAsyncResult ar)
  92                 {
  93                         SimpleWebClientAsyncResult ainfo = (SimpleWebClientAsyncResult) ar.AsyncState;
  94                         try
  95                         {
  96                                 if (ainfo.ParameterWriter.UsesWriteRequest)
  97                                 {
  98                                         Stream stream = ainfo.Request.GetRequestStream ();
  99                                         ainfo.ParameterWriter.WriteRequest (stream, ainfo.Parameters);
 100                                         stream.Close ();
 101                                 }
 102
 103                                 ainfo.Request.BeginGetResponse (new AsyncCallback (AsyncGetResponseDone), ainfo);
 104                         }
 105                         catch (Exception ex)
 106                         {
 107                                 ainfo.SetCompleted (null, ex, true);
 108                         }
 109                 }
 110
 111                 void AsyncGetResponseDone (IAsyncResult ar)
 112                 {
 113                         SimpleWebClientAsyncResult ainfo = (SimpleWebClientAsyncResult) ar.AsyncState;
 114                         WebResponse response = null;
 115
 116                         try {
 117                                 response = GetWebResponse (ainfo.Request, ar);
 118                         }
 119                         catch (WebException ex) {
 120                                 response = ex.Response;
 121                                 HttpWebResponse http_response = response as HttpWebResponse;
 122                                 if (http_response == null || http_response.StatusCode != HttpStatusCode.InternalServerError) {
 123                                         ainfo.SetCompleted (null, ex, true);
 124                                         return;
 125                                 }
 126                         }
 127                         catch (Exception ex) {
 128                                 ainfo.SetCompleted (null, ex, true);
 129                                 return;
 130                         }
 131
 132                         try {
 133                                 MimeReturnReader returnReader = (MimeReturnReader) ainfo.Method.ReturnReaderType.Create ();
 134                                 object result = returnReader.Read (response, response.GetResponseStream ());
 135                                 ainfo.SetCompleted (result, null, true);
 136                         }
 137                         catch (Exception ex) {
 138                                 ainfo.SetCompleted (null, ex, true);
 139                         }
 140                 }
 141
 142
 143                 protected object EndInvoke (IAsyncResult asyncResult)
 144                 {
 145                         if (!(asyncResult is SimpleWebClientAsyncResult))
 146                                 throw new ArgumentException ("asyncResult is not the return value from BeginInvoke");
 147
 148                         SimpleWebClientAsyncResult ainfo = (SimpleWebClientAsyncResult) asyncResult;
 149                         lock (ainfo)
 150                         {
 151                                 if (!ainfo.IsCompleted)
 152                                         ainfo.WaitForComplete ();
 153
 154                                 UnregisterMapping (ainfo.AsyncState);
 155
 156                                 if (ainfo.Exception != null)
 157                                         throw ainfo.Exception;
 158                                 else
 159                                         return ainfo.Result;
 160                         }
 161                 }
 162
 163                 protected object Invoke (string methodName, string requestUrl, object[] parameters)
 164                 {
 165                         HttpSimpleMethodStubInfo method = (HttpSimpleMethodStubInfo) TypeStub.GetMethod (methodName);
 166                         MimeParameterWriter parameterWriter = (MimeParameterWriter) method.ParameterWriterType.Create ();
 167
 168                         string url = parameterWriter.GetRequestUrl (requestUrl, parameters);
 169                         WebRequest request = GetWebRequest (new Uri(url, true));
 170
 171                         parameterWriter.InitializeRequest (request, parameters);
 172
 173                         if (parameterWriter.UsesWriteRequest)
 174                         {
 175                                 Stream stream = request.GetRequestStream ();
 176                                 parameterWriter.WriteRequest (stream, parameters);
 177                                 stream.Close ();
 178                         }
 179
 180                         WebResponse response = GetWebResponse (request);
 181
 182                         MimeReturnReader returnReader = (MimeReturnReader) method.ReturnReaderType.Create ();
 183                         return returnReader.Read (response, response.GetResponseStream ());
 184                 }
 185
 186 #if NET_2_0
 187
 188                 protected void InvokeAsync (string methodName, string requestUrl, object[] parameters, SendOrPostCallback callback)
 189                 {
 190                         InvokeAsync (methodName, requestUrl, parameters, callback, null);
 191                 }
 192
 193                 protected void InvokeAsync (string methodName, string requestUrl, object[] parameters, SendOrPostCallback callback, object userState)
 194                 {
 195                         InvokeAsyncInfo info = new InvokeAsyncInfo (callback, userState);
 196                         BeginInvoke (methodName, requestUrl, parameters, new AsyncCallback (InvokeAsyncCallback), info);
 197                 }
 198
 199                 void InvokeAsyncCallback (IAsyncResult ar)
 200                 {
 201                         InvokeAsyncInfo info = (InvokeAsyncInfo) ar.AsyncState;
 202                         SimpleWebClientAsyncResult sar = (SimpleWebClientAsyncResult) ar;
 203                         InvokeCompletedEventArgs args = new InvokeCompletedEventArgs (sar.Exception, false, info.UserState, (object[]) sar.Result);
 204                         if (info.Context != null)
 205                                 info.Context.Send (info.Callback, args);
 206                         else
 207                                 info.Callback (args);
 208                 }
 209 #endif
 210
 211                 #endregion // Methods
 212         }
 213
 214         internal class SimpleWebClientAsyncResult : WebClientAsyncResult
 215         {
 216                 public SimpleWebClientAsyncResult (WebRequest request, AsyncCallback callback, object asyncState)
 217                 : base (request, callback, asyncState)
 218                 {
 219                 }
 220
 221                 public object[] Parameters;
 222                 public HttpSimpleMethodStubInfo Method;
 223                 public MimeParameterWriter ParameterWriter;
 224         }
 225 }