C# Program to Establish Client Server Relationship

Here is source code of the C# Program to Establish Client Server Relationship. The C# program is successfully compiled and executed with Microsoft Visual Studio. The program output is also shown below.

1. /*

2.  * C# Program to Establish Client Server Relationship

3.  */

4. //SERVER PROGRAM

5. using System;

6. using System.Collections.Generic;

7. using System.Linq;

8. using System.Text;

9. using System.Net;

10. using System.Net.Sockets;

11. namespace Server336

12. {

13.     class Program

14.     {

15.         static void Main(string[] args)

16.         {

17.             try

18.             {

19.                 IPAddress ipAd = IPAddress.Parse("10.18.227.162");

20.                 TcpListener myList = new TcpListener(ipAd, 8001);

21.                 myList.Start();

22.                 Console.WriteLine("The server is running at port 8001...");

23.                 Console.WriteLine("The local End point is  :" + myList.LocalEndpoint);

24.                 Console.WriteLine("Waiting for a connection.....");

25.                 Socket s = myList.AcceptSocket();

26.                 Console.WriteLine("Connection accepted from " + s.RemoteEndPoint);

27.                 byte[] b = new byte[100];

28.                 int k = s.Receive(b);

29.                 Console.WriteLine("Recieved...");

30.                 for (int i = 0; i < k; i++)

31.                 {

32.                     Console.Write(Convert.ToChar(b[i]));

33.                 }

34.                 ASCIIEncoding asen = new ASCIIEncoding();

35.                 s.Send(asen.GetBytes("The string was recieved by the server."));

36.                 Console.WriteLine("\nSent Acknowledgement");

37.                 s.Close();

38.                 myList.Stop();

39.             }

40.             catch (Exception e)

41.             {

42.                 Console.WriteLine("Error..... " + e.StackTrace);

43.             }

44.             Console.ReadLine();

45.         }

46.     }

47. }

49. //CLIENT PROGRAM

50. using System;

51. using System.Collections.Generic;

52. using System.Linq;

53. using System.Text;

54. using System.IO;

55. using System.Net;

56. using System.Text;

57. using System.Net.Sockets;

59. namespace Client336

60. {

61.     class Program

62.     {

63.         static void Main(string[] args)

64.         {

65.             try

66.             {

67.                 TcpClient tcpclnt = new TcpClient();

68.                 Console.WriteLine("Connecting.....");

69.                 tcpclnt.Connect("10.18.227.162", 8001);                

70.                 Console.WriteLine("Connected");

71.                 Console.Write("Enter the string to be transmitted : ");

72.                 String str = Console.ReadLine();

73.                 Stream stm = tcpclnt.GetStream();

74.                 ASCIIEncoding asen = new ASCIIEncoding();

75.                 byte[] ba = asen.GetBytes(str);

76.                 Console.WriteLine("Transmitting.....");

77.                 stm.Write(ba, 0, ba.Length);

78.                 byte[] bb = new byte[100];

79.                 int k = stm.Read(bb, 0, 100);

80.                 for (int i = 0; i < k; i++)

81.                     Console.Write(Convert.ToChar(bb[i]));

82.                 tcpclnt.Close();

83.                 Console.Read();

84.             }

85.             catch (Exception e)

86.             {

87.                 Console.WriteLine("Error..... " + e.StackTrace);

88.             }

89.         }

90.     }

91. }