2 Why We Need Model-Based Testing

Overview 17
using System;
using System.Net;
using System.Net.Sockets;
namespace ClientServerImpl
{
// Wrapper for .NET server socket
public class Server
{
Socket listenerSocket; // assigned by Socket
Socket connectionSocket; // assigned by Accept, used by Send etc.
const int BUFLEN = 40;
byte[] receiveBuf = new byte[BUFLEN];
// method Client.Socket assigns instance of System.Net.Sockets.Socket
public void Socket()
{
listenerSocket = new Socket(AddressFamily.InterNetwork,
SocketType.Stream, ProtocolType.Tcp);
}
public void Bind(string ipAddr, int port)
{
listenerSocket.Bind(new IPEndPoint(IPAddress.Parse(ipAddr), port));
}
public void Listen()
{
const int backlog = 0;
listenerSocket.Listen(backlog);
}
// Socket.Accept returns connectionSocket used by Send, Receive, etc.
public void Accept()
{
connectionSocket = listenerSocket.Accept();
}
// to be continued ...
Figure 2.3. Remote instrument server class (1).
We will now briefly describe how to build libraries in the .NET framework.
We put each class, Client and Server, in its own file, Client.cs and Server.cs,
respectively. This is a common convention but it is not required. This command
invokes the C# compiler csc to compile the client library.
csc /target:library Client.cs
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