Initial data commit

Task/Echo-server/REALbasic/echo-server.basic

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+Class EchoSocket
+Inherits TCPSocket
+  Sub DataAvailable()
+    If Instr(Me.LookAhead, EndofLine.Windows) > 0 Then
+      Dim data As String = Me.ReadAll
+      Dim lines() As String = Split(data, EndofLine.Windows)
+      For i As Integer = 0 To Ubound(lines)
+        Me.Write(lines(i) + EndOfLine.Windows)
+        Print(lines(i))
+      Next
+    End If
+  End Sub
+End Class
+
+Class EchoServer
+Inherits ServerSocket
+  Function AddSocket() As TCPSocket
+    Return New EchoSocket
+  End Function
+End Class
+
+Class App
+Inherits ConsoleApplication
+  Function Run(args() As String) As Integer
+    Listener = New EchoServer
+    Listener.Port = 12321
+    Listener.Listen()
+    While True
+      DoEvents() 'pump the event loop
+    Wend
+  End Function
+  Private Listener As EchoServer
+End Class