mcs/class/Microsoft.Web.Services/Microsoft.Web.Services.Messaging/SoapTcpTransport.cs

   1 //
   2 // Microsoft.Web.Services.Messaging.SoapTcpTransport.cs
   3 //
   4 // Author: Todd Berman <tberman@gentoo.org>
   5 //
   6 // (C) 2003 Todd Berman
   7
   8 using System;
   9 using System.Net;
  10 using System.Net.Sockets;
  11 using System.Collections;
  12 using Microsoft.Web.Services;
  13 using Microsoft.Web.Services.Addressing;
  14
  15 namespace Microsoft.Web.Services.Messaging
  16 {
  17         public class SoapTcpTransport : SoapTransport, ISoapTransport
  18         {
  19
  20                 public static string Scheme = "soap.tcp";
  21
  22                 private Hashtable _listeners = new Hashtable ();
  23                 private Hashtable _receivers = new Hashtable ();
  24
  25                 public SoapTcpChannel GetTcpChannel (Uri to)
  26                 {
  27                         SoapTcpChannel chan = null;
  28                         lock (Channels.SyncRoot) {
  29                                 int port = (to.Port == -1) ? 8081 : to.Port;
  30
  31                                 Uri uri = new Uri (String.Format("{0}://{1}:{2}", Scheme, to.Host, port));
  32
  33                                 chan = Channels[uri.AbsoluteUri] as SoapTcpChannel;
  34
  35                                 if(chan == null) {
  36                                         SoapTcpChannel newChan = new SoapTcpChannel (uri, Formatter);
  37                                         Channels.Add (uri.AbsoluteUri, newChan);
  38
  39                                         newChan.BeginReceive(new AsyncCallback (OnReceive), newChan);
  40                                         chan = newChan;
  41
  42                                 }
  43                         }
  44                         return chan;
  45                 }
  46
  47                 public IAsyncResult BeginSend (SoapEnvelope env,
  48                                                 Uri dest,
  49                                                 AsyncCallback callback,
  50                                                 object state)
  51                 {
  52                         SoapTcpChannel chan = GetTcpChannel (dest);
  53
  54                         return new SendAsyncResult (chan, env, callback, state);
  55                 }
  56
  57                 public void EndSend (IAsyncResult result)
  58                 {
  59                         if(result == null) {
  60                                 throw new ArgumentNullException ("result");
  61                         }
  62
  63                         if(result is SendAsyncResult) {
  64                                 AsyncResult.End (result);
  65                         } else {
  66                                 throw new InvalidOperationException ("Invalid IAsyncResult Type");
  67                         }
  68                 }
  69
  70                 public void RegisterPort (Uri to, Type rType)
  71                 {
  72                         GenericRegister (to, rType);
  73                 }
  74
  75                 public void RegisterPort (Uri to, SoapReceiver rec)
  76                 {
  77                         GenericRegister (to, rec);
  78                 }
  79
  80                 private void GenericRegister (Uri to, object rType)
  81                 {
  82                         if(to == null) {
  83                                 throw new ArgumentNullException ("to");
  84                         }
  85                         if(Scheme != to.Scheme) {
  86                                 throw new ArgumentException ("invalid Scheme");
  87                         }
  88                         //if(to.Host != "localhost") {
  89                         //      throw new ArgumentException ("Host name " + to.Host + " does not equal " + Dns.GetHostName() );
  90                         //}
  91
  92                         lock(Channels.SyncRoot) {
  93                                 if(Receivers.Contains (to) == true) {
  94                                         throw new ArgumentException ("URI has already been registered");
  95                                 }
  96                                 int port = to.Port <= -1 ? 8081 : to.Port;
  97                                 Uri to_with_port = new Uri (Scheme + "://" + to.Host + ":" + port);
  98                                 SoapTcpListener tcp = (SoapTcpListener) _listeners[to_with_port];
  99
 100                                 if(tcp == null) {
 101
 102                                         //This is what Hervey says it does, not WSE2 TP tested.
 103
 104                                         if(to.Host == "localhost") {
 105                                                 tcp = new SoapTcpListener (IPAddress.Loopback, port);
 106                                         } else {
 107                                                 tcp = new SoapTcpListener (IPAddress.Any, port);
 108                                         }
 109
 110                                         tcp.Start ();
 111                                         tcp.AddReference ();
 112
 113                                         tcp.BeginAcceptSocket (new AsyncCallback (OnAcceptSocket), tcp);
 114
 115                                         _listeners[to_with_port] = tcp;
 116                                 } else {
 117                                         tcp.AddReference ();
 118                                 }
 119
 120                                 Receivers[to] = rType;
 121                         }
 122                 }
 123
 124                 public void Send (SoapEnvelope env, Uri to)
 125                 {
 126                         SoapTcpChannel tcp = GetTcpChannel (to);
 127
 128                         tcp.Send (env);
 129                 }
 130
 131                 public void UnregisterAll ()
 132                 {
 133                         lock (Channels.SyncRoot) {
 134
 135                                 Receivers.Clear ();
 136                                 foreach(SoapTcpListener tcp in _listeners.Values) {
 137                                         tcp.Stop ();
 138                                 }
 139                                 _listeners.Clear ();
 140                         }
 141                 }
 142
 143                 public void UnregisterPort (Uri to)
 144                 {
 145                         if(to == null) {
 146                                 throw new ArgumentNullException ("to");
 147                         }
 148                         lock(Channels.SyncRoot) {
 149                                 int port = to.Port < 0 ? 8081 : to.Port;
 150
 151                                 Uri newTo = new Uri (Scheme + "://" + to.Host + ":" + port);
 152                                 SoapTcpListener tcp = _listeners[newTo] as SoapTcpListener;
 153
 154                                 if(tcp != null) {
 155                                         if(tcp.ReleaseReference () == 0) {
 156                                                 _listeners.Remove(newTo);
 157                                                 tcp.Stop();
 158                                         }
 159                                         Receivers.Remove(to);
 160                                 }
 161                         }
 162                 }
 163
 164                 //private string Scheme {
 165                 //      get { return "soap.tcp"; }
 166                 //}
 167
 168                 private void OnAcceptSocket (IAsyncResult result)
 169                 {
 170                         try {
 171                                 SoapTcpListener tcp = (SoapTcpListener) result.AsyncState;
 172
 173                                 if(tcp != null) {
 174                                         Socket sock = tcp.EndAcceptSocket (result);
 175                                         if(tcp.IsListening != true) {
 176                                                 tcp.BeginAcceptSocket (new AsyncCallback (OnAcceptSocket), result);
 177                                         }
 178                                         if(sock != null) {
 179                                                 SoapTcpChannel chan = new SoapTcpChannel (sock, Formatter);
 180                                                 lock (Channels.SyncRoot) {
 181                                                         Channels.Add (chan.Destination.AbsoluteUri, chan);
 182                                                 }
 183                                                 chan.BeginReceive (new AsyncCallback (OnReceive), chan);
 184                                         }
 185                                 }
 186                         } catch (Exception)
 187                         {
 188                         }
 189                 }
 190
 191                 private void OnReceive (IAsyncResult result)
 192                 {
 193                         SoapTcpChannel tcp = result.AsyncState as SoapTcpChannel;
 194                         SoapEnvelope env = null;
 195
 196                         try {
 197                                 env = tcp.EndReceive (result);
 198                                 tcp.BeginReceive (new AsyncCallback (OnReceive), tcp);
 199                         } catch (Exception) {
 200                                 lock (Channels.SyncRoot) {
 201                                         Channels.Remove (tcp.Destination.AbsoluteUri);
 202                                         tcp.Close ();
 203                                 }
 204                         }
 205
 206                         if(env != null) {
 207                                 env.Context.Channel = tcp;
 208
 209                                 AddressingHeaders header = env.Context.Addressing;
 210
 211                                 header.Load (env);
 212
 213                                 //FIXME: There is a lot more checking to do here for a valid message.
 214                                 if(header.To != null) {
 215                                         if(header.To.Value.Scheme != "soap.tcp") {
 216                                                 SoapReceiver.DispatchMessageFault (env, new ArgumentException ("soap error"));
 217                                         }
 218                                 }
 219                                 SoapReceiver.DispatchMessage (env);
 220                         }
 221                 }
 222
 223                 protected IDictionary Receivers {
 224                         get { return _receivers; }
 225                 }
 226
 227         }
 228
 229 }