2005-01-23 smeghead

* Port the java SAM client library to mono/C# and released into the
      public domain.  The 0.1 version of this port is available in CVS as
      i2p/apps/sam/csharp/src/I2P.SAM.Client.  The other nonfunctional C#
      library has been removed.

apps/sam/csharp/src/I2P.SAM.Client/SamEventHandler.cs

@@ -0,0 +1,116 @@
+using System;
+using System.Collections.Specialized;
+using System.Threading;
+
+namespace I2P.SAM.Client
+{
+	/// <summary>
+	///   Simple helper implementation of a SamClientEventListener.
+	/// </summary>
+	public class SamEventHandler : SamClientEventListenerImpl
+	{
+		private object              _helloLock         = new Object();
+		private String              _helloOk;
+		private NameValueCollection _namingReplies     = new NameValueCollection();
+		private object              _namingReplyLock   = new Object();
+		private object              _sessionCreateLock = new Object();
+		private String              _sessionCreateOk;
+
+		public override void HelloReplyReceived(bool ok) {
+			lock (_helloLock) {
+				if (ok)
+					_helloOk = Boolean.TrueString;
+				else
+					_helloOk = Boolean.FalseString;
+
+				Monitor.PulseAll(_helloLock);
+			}
+		}
+
+		public override void NamingReplyReceived(string name, string result, string valueString, string message) {
+			lock (_namingReplyLock) {
+				if (result.Equals(SamBridgeMessages.NAMING_REPLY_OK))
+					_namingReplies.Add(name, valueString);
+				else
+					_namingReplies.Add(name, result);
+
+				Monitor.PulseAll(_namingReplyLock);
+			}
+		}
+
+		public override void SessionStatusReceived(string result, string destination, string message) {
+			lock (_sessionCreateLock) {
+				if (result.Equals(SamBridgeMessages.SESSION_STATUS_OK))
+					_sessionCreateOk = Boolean.TrueString;
+				else
+					_sessionCreateOk = Boolean.FalseString;
+
+				Monitor.PulseAll(_sessionCreateLock);
+			}
+		}
+
+	    public override void UnknownMessageReceived(string major, string minor, NameValueCollection parameters) {
+			Console.WriteLine("wrt, [" + major + "] [" + minor + "] [" + parameters + "]");
+	    }
+	    
+		/*
+		 * Blocking lookup calls below.
+		 */
+
+		/// <summary>
+		///   Wait for the connection to be established, returning true if
+		///   everything went ok.
+		/// </summary>
+		public bool WaitForHelloReply() {
+			while (true) {
+				lock (_helloLock) {
+					if (_helloOk == null)
+						Monitor.Wait(_helloLock);
+					else
+						return Boolean.Parse(_helloOk);
+				}
+			}
+		}
+
+		/// <summary>
+		///   Return the destination found matching the name, or <c>null</c> if
+		///   the key was not able to be retrieved.
+		/// </summary>
+		/// <param name="name">The name to be looked for, or "ME".</param>
+		public string WaitForNamingReply(string name) {
+			while (true) {
+				lock (_namingReplyLock) {
+					try {
+						string valueString = _namingReplies[name];
+						_namingReplies.Remove(name);
+
+						if (valueString.Equals(SamBridgeMessages.NAMING_REPLY_INVALID_KEY))
+							return null;
+						else if (valueString.Equals(SamBridgeMessages.NAMING_REPLY_KEY_NOT_FOUND))
+							return null;
+						else
+							return valueString;
+
+					} catch (ArgumentNullException ane) {
+						Monitor.Wait(_namingReplyLock);
+					}
+				}
+			}
+		}
+
+		/// <summary>
+		///   Wait for the session to be created, returning true if everything
+		///   went ok.
+		/// </summary>
+		public bool WaitForSessionCreateReply() {
+			while (true) {
+				lock (_sessionCreateLock) {
+					if (_sessionCreateOk == null)
+						Monitor.Wait(_sessionCreateLock);
+					else
+						return Boolean.Parse(_sessionCreateOk);
+				}
+			}
+		}
+	}
+}