KeepAliveDelay removed; ping frequency doubled instead if no activity in 1.5 x ping frequency

Samples/ChatClient/Form1.Designer.cs

@@ -63,6 +63,7 @@
 			this.button1.TabIndex = 2;
 			this.button1.Text = "Send";
 			this.button1.UseVisualStyleBackColor = true;
+			this.button1.Click += new System.EventHandler(this.button1_Click);
 			// 
 			// button2
 			// 

Samples/ChatClient/Form1.cs

@@ -38,5 +38,12 @@ namespace ChatClient
 			else
 				Program.SettingsWindow.Show();
 		}
+
+		private void button1_Click(object sender, EventArgs e)
+		{
+			string txt = textBox1.Text.Trim();
+			Program.Input(txt);
+			textBox1.Text = "";
+		}
 	}
 }

Samples/ChatClient/Program.cs

@@ -44,6 +44,9 @@ namespace ChatClient
 
 		public static void Input(string input)
 		{
+			if (string.IsNullOrEmpty(input))
+				return;
+
 			if (input.ToLowerInvariant().StartsWith("connect "))
 			{
 				string host = input.Substring(8).Trim();