mcs/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         [System.Runtime.InteropServices.ComVisible (true)]
  39         public abstract class HttpSimpleClientProtocol : HttpWebClientProtocol {
  40
  41                 #region Fields
  42
  43                 internal HttpSimpleTypeStubInfo TypeStub;
  44
  45                 #endregion // Fields
  46
  47                 #region Constructors
  48
  49                 protected HttpSimpleClientProtocol ()
  50                 {
  51                 }
  52
  53                 #endregion // Constructors
  54
  55                 #region Methods
  56
  57                 protected IAsyncResult BeginInvoke (string methodName, string requestUrl, object[] parameters, AsyncCallback callback, object asyncState)
  58                 {
  59                         HttpSimpleMethodStubInfo method = (HttpSimpleMethodStubInfo) TypeStub.GetMethod (methodName);
  60                         SimpleWebClientAsyncResult ainfo = null;
  61
  62                         try
  63                         {
  64                                 MimeParameterWriter parameterWriter = (MimeParameterWriter) method.ParameterWriterType.Create ();
  65                                 string url = parameterWriter.GetRequestUrl (requestUrl, parameters);
  66                                 WebRequest req = GetWebRequest (new Uri(url));
  67
  68                                 ainfo = new SimpleWebClientAsyncResult (req, callback, asyncState);
  69                                 ainfo.Parameters = parameters;
  70                                 ainfo.ParameterWriter = parameterWriter;
  71                                 ainfo.Method = method;
  72
  73                                 ainfo.Request = req;
  74                                 ainfo.Request.BeginGetRequestStream (new AsyncCallback (AsyncGetRequestStreamDone), ainfo);
  75                                 RegisterMapping (asyncState, ainfo);
  76                         }
  77                         catch (Exception ex)
  78                         {
  79                                 if (ainfo != null)
  80                                         ainfo.SetCompleted (null, ex, false);
  81                                 else
  82                                         throw ex;
  83                         }
  84
  85                         return ainfo;
  86
  87                 }
  88
  89                 void AsyncGetRequestStreamDone (IAsyncResult ar)
  90                 {
  91                         SimpleWebClientAsyncResult ainfo = (SimpleWebClientAsyncResult) ar.AsyncState;
  92                         try
  93                         {
  94                                 if (ainfo.ParameterWriter.UsesWriteRequest)
  95                                 {
  96                                         Stream stream = ainfo.Request.GetRequestStream ();
  97                                         ainfo.ParameterWriter.WriteRequest (stream, ainfo.Parameters);
  98                                         stream.Close ();
  99                                 }
 100
 101                                 ainfo.Request.BeginGetResponse (new AsyncCallback (AsyncGetResponseDone), ainfo);
 102                         }
 103                         catch (Exception ex)
 104                         {
 105                                 ainfo.SetCompleted (null, ex, true);
 106                         }
 107                 }
 108
 109                 void AsyncGetResponseDone (IAsyncResult ar)
 110                 {
 111                         SimpleWebClientAsyncResult ainfo = (SimpleWebClientAsyncResult) ar.AsyncState;
 112                         WebResponse response = null;
 113
 114                         try {
 115                                 response = GetWebResponse (ainfo.Request, ar);
 116                         }
 117                         catch (WebException ex) {
 118                                 response = ex.Response;
 119                                 HttpWebResponse http_response = response as HttpWebResponse;
 120                                 if (http_response == null || http_response.StatusCode != HttpStatusCode.InternalServerError) {
 121                                         ainfo.SetCompleted (null, ex, true);
 122                                         return;
 123                                 }
 124                         }
 125                         catch (Exception ex) {
 126                                 ainfo.SetCompleted (null, ex, true);
 127                                 return;
 128                         }
 129
 130                         try {
 131                                 MimeReturnReader returnReader = (MimeReturnReader) ainfo.Method.ReturnReaderType.Create ();
 132                                 object result = returnReader.Read (response, response.GetResponseStream ());
 133                                 ainfo.SetCompleted (result, null, true);
 134                         }
 135                         catch (Exception ex) {
 136                                 ainfo.SetCompleted (null, ex, true);
 137                         }
 138                 }
 139
 140
 141                 protected object EndInvoke (IAsyncResult asyncResult)
 142                 {
 143                         if (!(asyncResult is SimpleWebClientAsyncResult))
 144                                 throw new ArgumentException ("asyncResult is not the return value from BeginInvoke");
 145
 146                         SimpleWebClientAsyncResult ainfo = (SimpleWebClientAsyncResult) asyncResult;
 147                         lock (ainfo)
 148                         {
 149                                 if (!ainfo.IsCompleted)
 150                                         ainfo.WaitForComplete ();
 151
 152                                 UnregisterMapping (ainfo.AsyncState);
 153
 154                                 if (ainfo.Exception != null)
 155                                         throw ainfo.Exception;
 156                                 else
 157                                         return ainfo.Result;
 158                         }
 159                 }
 160
 161                 protected object Invoke (string methodName, string requestUrl, object[] parameters)
 162                 {
 163                         HttpSimpleMethodStubInfo method = (HttpSimpleMethodStubInfo) TypeStub.GetMethod (methodName);
 164                         MimeParameterWriter parameterWriter = (MimeParameterWriter) method.ParameterWriterType.Create ();
 165
 166                         string url = parameterWriter.GetRequestUrl (requestUrl, parameters);
 167                         WebRequest request = GetWebRequest (new Uri(url, true));
 168
 169                         parameterWriter.InitializeRequest (request, parameters);
 170
 171                         if (parameterWriter.UsesWriteRequest)
 172                         {
 173                                 Stream stream = request.GetRequestStream ();
 174                                 parameterWriter.WriteRequest (stream, parameters);
 175                                 stream.Close ();
 176                         }
 177
 178                         WebResponse response = GetWebResponse (request);
 179
 180                         MimeReturnReader returnReader = (MimeReturnReader) method.ReturnReaderType.Create ();
 181                         return returnReader.Read (response, response.GetResponseStream ());
 182                 }
 183
 184
 185                 protected void InvokeAsync (string methodName, string requestUrl, object[] parameters, SendOrPostCallback callback)
 186                 {
 187                         InvokeAsync (methodName, requestUrl, parameters, callback, null);
 188                 }
 189
 190                 protected void InvokeAsync (string methodName, string requestUrl, object[] parameters, SendOrPostCallback callback, object userState)
 191                 {
 192                         InvokeAsyncInfo info = new InvokeAsyncInfo (callback, userState);
 193                         BeginInvoke (methodName, requestUrl, parameters, new AsyncCallback (InvokeAsyncCallback), info);
 194                 }
 195
 196                 void InvokeAsyncCallback (IAsyncResult ar)
 197                 {
 198                         InvokeAsyncInfo info = (InvokeAsyncInfo) ar.AsyncState;
 199                         SimpleWebClientAsyncResult sar = (SimpleWebClientAsyncResult) ar;
 200                         InvokeCompletedEventArgs args = new InvokeCompletedEventArgs (sar.Exception, false, info.UserState, (object[]) sar.Result);
 201                         if (info.Context != null)
 202                                 info.Context.Send (info.Callback, args);
 203                         else
 204                                 info.Callback (args);
 205                 }
 206
 207                 #endregion // Methods
 208         }
 209
 210         internal class SimpleWebClientAsyncResult : WebClientAsyncResult
 211         {
 212                 public SimpleWebClientAsyncResult (WebRequest request, AsyncCallback callback, object asyncState)
 213                 : base (request, callback, asyncState)
 214                 {
 215                 }
 216
 217                 public object[] Parameters;
 218                 public HttpSimpleMethodStubInfo Method;
 219                 public MimeParameterWriter ParameterWriter;
 220         }
 221 }