Employee Server
/*
C# Network Programming
by Richard Blum
Publisher: Sybex
ISBN: 0782141765
*/
using System;
using System.Text;
using System.Net;
using System.Net.Sockets;
public class EmployeeSrvr
{
public static void Main()
{
byte[] data = new byte[1024];
TcpListener server = new TcpListener(9050);
server.Start();
TcpClient client = server.AcceptTcpClient();
NetworkStream ns = client.GetStream();
byte[] size = new byte[2];
int recv = ns.Read(size, 0, 2);
int packsize = BitConverter.ToInt16(size, 0);
Console.WriteLine("packet size = {0}", packsize);
recv = ns.Read(data, 0, packsize);
Employee emp1 = new Employee(data);
Console.WriteLine("emp1.EmployeeID = {0}", emp1.EmployeeID);
Console.WriteLine("emp1.LastName = {0}", emp1.LastName);
Console.WriteLine("emp1.FirstName = {0}", emp1.FirstName);
Console.WriteLine("emp1.YearsService = {0}", emp1.YearsService);
Console.WriteLine("emp1.Salary = {0}\n", emp1.Salary);
size = new byte[2];
recv = ns.Read(size, 0, 2);
packsize = BitConverter.ToInt16(size, 0);
data = new byte[packsize];
Console.WriteLine("packet size = {0}", packsize);
recv = ns.Read(data, 0, packsize);
Employee emp2 = new Employee(data);
Console.WriteLine("emp2.EmployeeID = {0}", emp2.EmployeeID);
Console.WriteLine("emp2.LastName = {0}", emp2.LastName);
Console.WriteLine("emp2.FirstName = {0}", emp2.FirstName);
Console.WriteLine("emp2.YearsService = {0}", emp2.YearsService);
Console.WriteLine("emp2.Salary = {0}", emp2.Salary);
ns.Close();
client.Close();
server.Stop();
}
}
public class Employee {
public int EmployeeID;
private int LastNameSize;
public string LastName;
private int FirstNameSize;
public string FirstName;
public int YearsService;
public double Salary;
public int size;
public Employee()
{
}
public Employee(byte[] data)
{
int place = 0;
EmployeeID = BitConverter.ToInt32(data, place);
place += 4;
LastNameSize = BitConverter.ToInt32(data, place);
place += 4;
LastName = Encoding.ASCII.GetString(data, place, LastNameSize);
place = place + LastNameSize;
FirstNameSize = BitConverter.ToInt32(data, place);
place += 4;
FirstName = Encoding.ASCII.GetString(data, place, FirstNameSize);
place += FirstNameSize;
YearsService = BitConverter.ToInt32(data, place);
place += 4;
Salary = BitConverter.ToDouble(data, place);
}
public byte[] GetBytes()
{
byte[] data = new byte[1024];
int place = 0;
Buffer.BlockCopy(BitConverter.GetBytes(EmployeeID), 0, data, place, 4);
place += 4;
Buffer.BlockCopy(BitConverter.GetBytes(LastName.Length), 0, data, place, 4);
place += 4;
Buffer.BlockCopy(Encoding.ASCII.GetBytes(LastName), 0, data, place, LastName.Length);
place += LastName.Length;
Buffer.BlockCopy(BitConverter.GetBytes(FirstName.Length), 0, data, place, 4);
place += 4;
Buffer.BlockCopy(Encoding.ASCII.GetBytes(FirstName), 0, data, place, FirstName.Length);
place += FirstName.Length;
Buffer.BlockCopy(BitConverter.GetBytes(YearsService), 0, data, place, 4);
place += 4;
Buffer.BlockCopy(BitConverter.GetBytes(Salary), 0, data, place, 8);
place += 8;
size = place;
return data;
}
}
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