REMOTING IN C# BY ANIL KUMAR

                                   REMOTING

REMOTING IS AN TECHNIQUE THROUGH WE CAN CREATE DISTRIBUTED APPLICATION AND TO COMMUNICATION BETWEEN THOSE APPLICATION

                   PROCESS 1      ISOLATE    PROCESS 2

REMOTING IS AN TECHNIQUE TO DO INTERPROCESSOR COMMUNICATION BETWEEN TWO PROCESS

  

IN JAVA RMI (Remote Method Invocation)

 

IN .NET REMOTING

THESE PROCESS MAY BE RUN AT ANY WHERE AT SEVER MACHINE OR AT DIFFERENT MACHINE

EACH APPLICATION BY DEFAULT CREATE IT’S OWN APPLICATION DOMAIN.

REMOTING IS AN SERVER CLIENT ARCHITECTURE

 

                                                                                 SERVER APPLICATION

                                                                                  CLIENT APPLICATION

                                                                 SERVICE

SERVER APPLICATION MUST BE ACTIVE TO MAKE THE CONNECTION BETWEEN SERVER AND CLIENT.

TWO MODES

SINGLETON  :    OBJECECT IS REMOVED AND FIXED ON SERVER SIDE

 SINGLE CALL  :    OBJECT IS NOT FIXED WE DESTROY THIS OBJECT AFTER WORK.

NON REMOTABLE OBJECT     NON REMOTABLE OBJECT ARE THOSE OBJECT WHICH NEVER CROSS THEIR BOUNDRY

 REMOTABLE OBJECT      REMOTABLE OJECT ARE THOSE OBJECT WHICH CAN BE ACCESS OUT OF THE BOUNDRY TO MAKE A REMOTABLE OBJECT  USE THIS CLASS.

                MARSHALBYREFOBJECT  IS AN CLASS

REMOTING   TERMS WHICH COME IN REMOTING ENVIRONMENT

 

                                                   PROXY

                                         CHANNELS

                                                                                 

                                         MESSAGE

                                       FORMATTERS

PROXY

                    PROXY IS AN FAKE COPY AT CLIENT HAND SIDE TO ACCESS THE ACTUAL OBJECT AS THOSE ARE CREATED ON SERVER SIDE. AND THE CREATION OF FAKE COPY IS DONE BY CLR.

                TO GENERATE OR CREATE PROXY USE THIS

    ACTIVATOR.GETOBJECT( );

   IDENTIFICATION OF THE PROCESS BY PORT NUMBER

   SMTP PORT NO. IS 25;

IP ADDRESS + PORT NO.     TO ACCESS AN PROCESS OR TO IDENTIFY AN PROCESS

CHANNELS         CHANNELS ARE PROGRAMS IN WHICH THE TRANSPORTATION IS OCCUR BETWEEN CLIENT AND SERVER AND SERVER TO CLIENT SIDE OF A FILE. AT DATA NETWORK DATA CAN BE IN BINARY FORM

 

                                      HTTP CHANNEL

                                      

                                      IPC CHANNEL

                                          

                                      TCP CHANNEL  ( SO FAST AND BINARY FORM)

IPC CHANNEL

Inter-Process Communication IPC is a set of techniques for the exchange of data among two or more threads in one or more processes. Processes may be running on one or more computers connected by a

IPC CHANNELS NOT SUPPORT ANY NETWORK LAYER, SO IT IS USED WHEN THE CLIENT AND SERVER BOTH ARE AT SAME MACHINE.

SAOP

(SIMPLE  ACCESS OBJECT PROTOCOL)

SAOP MESSEGE CAN BE UNDERSTAND BY ANY TECHNOLOGY IT IS STANDARD FORMAT BY W3C

 TO SEND TO HETEROGENEOUS SYSTEM USE SAOP

FORMATTER

 IS PLAY AN IMPORTANT ROLE  TO FORMAT AND TO CONVERT THE DATA

     TWO TYPES OF FORMATTER ARE

 

                                         BINARY FORMATTER

                                                 

                                          SAOP FORMATTER

                                                 

                                     CHANNEL IS FOR TRANSPORTER

                                      FORMATTER IS FOR ENCODER

                                                     PRACTICAL

1.      CLIENT APPLICATION

2.      SERVER APPLICATION

3.      SERVICE APPLICATION

         PRACTICAL EXAMPLE OF PRIVATE CHAT

             FIRSTLY CREATE SERVICE APPLICATIONS

1.      ADD AN CLASS LIBRARY FOR INTERFACE NAMING OF FUNCTIONS

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Collections;

namespace Ichat

{

    public interface Ichatting

    {

        void setmessage(string to, string from, string mess);

        string getmessage(string user);

        ICollection Getusers();

        void adduser(string nm);

    }

}

2.      THEN CREATE ANOTHER CLASS LIBRARY FOR IMPLEMENTATION OF THESE FUNCTIONS

· AND ADD A REFRENCE THIS ICHAT CLASS LIBRARY

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

namespace ClassLibrary10

{

    public class Chat:MarshalByRefObject,Ichat.Ichatting

    {

        Dictionary<string, string> dc = new Dictionary<string, string>();

        #region Ichatting Members

        public System.Collections.ICollection Getusers()

        {

            return dc.Keys;

        }

        public void adduser(string nm)

        {

            dc.Add(nm,"");

        }

        public string getmessage(string user)

        {

            if (dc.ContainsKey(user))

            {

                return dc[user];

            }

            return null;

        }

        public void setmessage(string to, string from, string mess)

        {

            dc[to] = from + ":" + mess + Environment.NewLine;

            dc[from] =from + ":" + mess + Environment.NewLine;

        }

        #endregion

    }

}

3.  THEN CREATE SERVER APPLICATION

·         ADD A REFRENCE YOUR BOTH CLASS LIBRARY OF SERVICES

·         ADD A REFRENCE  USING SYSTEM.RUNTIME.REMOTING NAMESPACE

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Runtime.Remoting;

using System.Runtime.Remoting.Channels;

using System.Runtime.Remoting.Channels.Tcp;

namespace ConsoleApplication4

{

    class Program

    {

        static void Main(string[] args)

        {

            TcpChannel tc = new TcpChannel(8086);

            ChannelServices.RegisterChannel(tc);

            RemotingConfiguration.RegisterWellKnownServiceType(typeof(ClassLibrary10.Chat), "chat", WellKnownObjectMode.Singleton);

            Console.WriteLine("server is running");

            Console.ReadLine();

        }

    }

}

           

4.      THEN CREATE CLIENT APPLICATION

            CREATE TWO FORMS

       FOR FORM 1

      CODING

using System;

using System.Collections.Generic;

using System.ComponentModel;

using System.Data;

using System.Drawing;

using System.Linq;

using System.Text;

using System.Windows.Forms;

namespace WindowsFormsApplication39

{

    public partial class Form1 : Form

    {

        public Form1()

        {

            InitializeComponent();

        }

        public static string user;

        private void button1_Click(object sender, EventArgs e)

        {

            user = textBox1.Text;

            Form2 obj = new Form2();

            obj.Show();

        }

        private void Form1_Load(object sender, EventArgs e)

        {

        }

    }

}

   IN FORM2

  CODING

using System;

using System.Collections.Generic;

using System.ComponentModel;

using System.Data;

using System.Drawing;

using System.Linq;

using System.Text;

using System.Windows.Forms;

namespace WindowsFormsApplication39

{

    public partial class Form2 : Form

    {

        public Form2()

        {

            InitializeComponent();

        }

        private void button1_Click(object sender, EventArgs e)

        {

            obj.setmessage(comboBox1.SelectedItem.ToString(), Form1.user, textBox2.Text);

        }

        Ichat.Ichatting obj;

        private void Form2_Load(object sender, EventArgs e)

        {  

            obj = (Ichat.Ichatting)Activator.GetObject(typeof(Ichat.Ichatting), "tcp://localhost:8086/chat");

            obj.adduser(Form1.user);

            label1.Text = Form1.user;

        }

        private void timer1_Tick(object sender, EventArgs e)

        {

            foreach (string s in obj.Getusers())

            {

                if (!comboBox1.Items.Contains(s))

                {

                    comboBox1.Items.Add(s);

                }

            }

            string str = obj.getmessage(Form1.user);

           textBox1.Text = str;

        }

    }

}