--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Pml/IPmlCommunicator.cs	Tue Sep 11 16:28:53 2012 +0200
@@ -0,0 +1,51 @@
+using System;
+using System.Collections.Generic;
+using System.Text;
+
+namespace UCIS.Pml {
+	public class PmlCallReceivedEventArgs : EventArgs {
+		private PmlElement _request;
+		private PmlElement _reply;
+		private UInt32 _sid;
+		private bool _wantReply;
+
+		internal PmlCallReceivedEventArgs(PmlElement request, bool wantReply, UInt32 sid) {
+			_request = request;
+			_wantReply = wantReply;
+			_sid = sid;
+			_reply = null;
+		}
+		public bool WantReply {
+			get { return _wantReply; }
+		}
+		internal UInt32 SID {
+			get { return _sid; }
+		}
+		public PmlElement Reply {
+			get { return _reply; }
+			set { _reply = value; }
+		}
+		public PmlElement Request {
+			get { return _request; }
+		}
+	}
+	public abstract class PmlChannelRequestReceivedEventArgs : EventArgs {
+		public abstract IPmlChannel Accept();
+		public abstract void Reject();
+		public abstract PmlElement Data { get; }
+	}
+	public interface IPmlCommunicator {
+		event EventHandler<PmlCallReceivedEventArgs> CallReceived;
+		event EventHandler<PmlChannelRequestReceivedEventArgs> ChannelRequestReceived;
+
+		void Call(PmlElement message);
+		PmlElement Invoke(PmlElement message);
+
+		IAsyncResult BeginInvoke(PmlElement message, AsyncCallback callback, Object state);
+		PmlElement EndInvoke(IAsyncResult result);
+
+		IPmlChannel CreateChannel(PmlElement data);
+		IAsyncResult BeginCreateChannel(PmlElement data, AsyncCallback callback, Object state);
+		IPmlChannel EndCreateChannel(IAsyncResult result);
+	}
+}