A PROJECT REPORT ON
“Data Transmission Using Multi-Tasking Sockets” Submitted in partial fulfillment for the Degree of B. Tech in Information Technology Session 2012 – 2013
Submitted by Awadhesh Kumar Singh (09EBKIT010)
DEPARTMENT OF (CS & IT)
B.K. BIRLA INSTITUTE OF ENGINEERING &TECHNOLOGY, PILANI (RAJ.) (Affiliated to Rajasthan Technical University, Kota) 1
CERTIFICATE This is to certify that the work entitled “Data Transmission Using Multi-Tasking Sockets” is the original work being submitted by “Awadhesh Kumar Singh(09EBKIT010)“ in partial fulfillment for the Degree of B.Tech in “Information Technology” of the Rajasthan Technical Univer Universit sity, y, Kota. Kota. To the best of my knowled knowledge ge and belief belief,, the candidate candidate has fulfille fulfilled d the requirements of the rules and regulations relating to the de gree in B.Tech. of Rajasthan Technical Technica l University, Kota. The matter embodied in this project has not been submitted for the award of any degree of any university.
Date:
Signature of Supervisor (Guide - Mr. Gopal Krishan Prajapat) BKBIET, Pilani
College Seal
Mr. S B Dandin (Dean CS/IT)
Mr.Nimish Kumar (Project Evaluator)
Mr.Himanshu Verma (Project Evaluator)
2
CERTIFICATE This is to certify that the work entitled “Data Transmission Using Multi-Tasking Sockets” is the original work being submitted by “Awadhesh Kumar Singh(09EBKIT010)“ in partial fulfillment for the Degree of B.Tech in “Information Technology” of the Rajasthan Technical Univer Universit sity, y, Kota. Kota. To the best of my knowled knowledge ge and belief belief,, the candidate candidate has fulfille fulfilled d the requirements of the rules and regulations relating to the de gree in B.Tech. of Rajasthan Technical Technica l University, Kota. The matter embodied in this project has not been submitted for the award of any degree of any university.
Date:
Signature of Supervisor (Guide - Mr. Gopal Krishan Prajapat) BKBIET, Pilani
College Seal
Mr. S B Dandin (Dean CS/IT)
Mr.Nimish Kumar (Project Evaluator)
Mr.Himanshu Verma (Project Evaluator)
2
DECLARATION
I here hereby by decl declar aree that that the the work, work, whic which h is bein being g pres present ented ed in the the Proj Projec ect, t, enti entitl tled ed “Data Transmi Transmissio ssion n Using Using Multi-Ta Multi-Taskin sking g Sockets Sockets” ” submitted in part partia iall fulf fulfil illm lmen entt of the the
requirement for the award of Degree of “Bachelor of Technology” in Department of CS & IT Engineering with Information Technology Technology , and and subm submit itte ted d to the the with Special Specializat ization ion in Information Departm Department ent of CS & IT Engineering, B. K. Birla Institute of Engineering and Technology,
Pilani, Rajasthan Technical University, Kota is an authentic record of my own investigations carried out under the supervision of Mr. Gopal Krishan Prajapat , Department of CS & IT Engineering, B. K. Birla Institute of Engineering and Technology, Pilani. I have not submitted the matter presented in this project anywhere for the award of any other degree.
Awadhesh Kumar Singh Enrolment No.: 09EBKIT010 B. K. Birla Institute of Engineering and Technology, Pilani.
Counter Signed by
(Dean- Mr. Shridhar B. Dandin) B. K. Birla Institute of Engineering and Technology, Pilani.
(Guide- Mr. Gopal Krishan Prajapat) B. K. Birla Institute of Engineering and Technology, Pilani.
3
ACKNOWLEDGEMENTS
This work would not been possible, but it is the wealth of experience and acknowledges that is generated within the portals of B. K. Birla Institute of Engineering and Technology, Pilani, which enlightened my path to complete my project. First and foremost I wish to place my profound gratitude and sincere thanks to respected guide Mr. Gopal Krishan Prajapat for his valuable time and tireless efforts without which this work would not have completed on time. I also like to thank Dr. P.S. Bhatnagar (Director, B. K. Birla Institute of Engineering and Technology) and Mr. Shridhar Dandin(Dean CS & IT, B. K. Birla Institute of Engineering and Technology) for providing me with highly motivating and vibrant atmosphere in the college and department. Before bring it to end I would like to add little heartfelt words to my all friends who were part of this project in numerous ways.
Date: 07/01/2013
Awadhesh Kumar Singh (09EBKIT010) (IT 4th year)
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CONTENTS
CHAPTER
CHAPTER 1
CHAPTER 2
CHAPTER 3
TOPIC
PAGE NO.
DECLARATION
3
ACKNOWLEDGEMENTS
4
CONTENTS
5
LIST OF FIGURES
7
LIST OF ABBREVATIONS
8
TEAM INFORMATION
9
ABSTRACT
10
INTRODUCTION
11
1.1
PURPOSE
12
1.2
SCOPE & OBJECTIVE
12
1.3
EXISTING MODEL
12
TOOLS & ENVIRONMENT USED
13
2.1
SOFTWARE REQUIREMENTS
13
2.2
HARDWARE REQUIREMENTS
13
ANALYSIS & DESIGN DOCUMENT
14
3.1
FEASIBILITY STUDY
14
3.1.1
ECONOMIC FEASIBILITY
14
3.1.2
TECHNICAL FEASIBILITY
15
3.1.3
BEHAVIOURAL FEASIBILITY
15
3.2
FUNCTIONAL DESCRIPTION
16
3.3
MODULE CLASSIFICATION
16
3.3.1
CLIENT BASED MODULE
16
5
3.3.2
SERVER BASED MODULE
16
3.4
E MAILS CLIENTS’ OPERATIONS
17
3.5
E MAILS SERVER’S OPERATIONS
17
3.6
E MAIL INBOX’S OPERATIONS
18
3.7
DIAGRAMS
19
3.7.1
DATA FLOW DIAGRAMS
19
3.7.2
UML DIAGRAMS
21
3.8
SNAPSHOTS
25
CHAPTER 4
CONCLUSION
29
CHAPTER 5
LIMITATION OF THE PROJECT
30
CHAPTER 6
FUTURE SCOPE & APPLICATIONS
31
REFERENCES
32
GLOSSARY
33
APPENDIX
34
LIST OF FIGURES
• • • • • • • • •
DFD Level 1(Interaction b/w client & server) DFD Level 2(Architecture for functionality of Java Mail in LAN) DFD Level 3 Class Diagram for Java Mail Use Case Diagram for client module Use Case Diagram for Storage Module Use Case Diagram for Client Module Use Case Diagram for Server Module Use Case Diagram for Sending/Receiving Module
6
7
LIST OF ABBREVIATION
•
TCP: Transmission Control Protocol.
•
UDP: User Datagram Protocol.
•
JDK: Java Development Tool Kit.
•
IDE: Integrated Development Environment.
•
PCM: Pulse-Code Modulation .
8
•
TEAM INFORMATION
The Project is under the process of completion by
AKANKSHA JANGIR
Information & Technology 09EBKIT002 B. K. Birla Institute of Engineering and Technology, Pilani.
AWADHESH KUMAR SINGH
Information & Technology 09EBKIT010 B. K. Birla Institute of Engineering and Technology, Pilani.
KAVITA CHOUHAN
Information & Technology 09EBKIT022 B. K. Birla Institute of Engineering and Technology, Pilani.
9
ABSTRACT
In yesteryears Computer Science Engineering has entered a new phase where the characteristics of various platforms have been combined together to yield a new platform compatible with each and every working application which are characterized and controlled at a huge scale by the developers. Nowadays portable applications have been built which can run on similar environments or different after modifying them to some extent. This Project a new socket class which supports both TCP and UDP communication, but it provides some advantages compared to other classes that you may find here or on some other Socket Programming articles. First of all, this class doesn’t have any limitation like the need to provide a window handle to be used. This limitation is bad if all you want is a simple console application. So this library doesn’t have such a limitation. It also provides threading support automatically for you, which handles the socket connection and disconnection to a peer. It also features some options not yet found in any socket classes that I have seen so far. It supports both client and server sockets. A server socket can be referred as to a socket that can accept many connections. This document is meant for describing all the features and procedures that were followed while developing the system. This document specially mentions the details of the project how it will be developed, the primary requirements, as well as v arious features and functionalities of the project and the procedures which will be followed in achieving these objectives.
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Chapter-1
INTRODUCTION This article is about a client/server multi-threaded socket class. The thread is optional since the developer is still responsible to decide if needs it. There are other Socket classes here and other places over the Internet but none of them can provide feedback (event detection) to your application like this one does. It provides you with the following events detection: connection established, connection dropped, connection failed and data reception (including 0 byte packet). Data transmission, digital transmission, or digital communications is the physical transfer of data (a digital bit stream) over a point-to-point or point-to-multipoint communication channel. Examples of such channels are copper wires, optical fibers, wireless communication channels, and storage media. The data is represented as an electromagnetic signal, such as an electrical voltage, radio wave, microwave, or infrared signal. While analog communications is the transfer of continuously varying information signal, digital communications is the transfer of discrete messages. The messages are either represented by a sequence of pulses by means of a line code ( baseband transmission), or by a limited set of continuously varying wave forms (pass band transmission), using a digital modulation method. The pass band modulation and corresponding demodulation (also known as detection) is carried out by modem equipment. According to the most common definition of digital signal, both baseband and pass band signals representing bit-streams are considered as digital transmission, while an alternative definition only considers the baseband signal as digital, and pass band transmission of digital data as a form of digital-to-analog conversion. Data transmitted may be digital messages originating from a data source, for example a computer or a keyboard. It may also be an analog signal such as a phone call or a video signal, digitized into a bit-stream for example using pulse-code modulation (PCM) or more advanced source coding (analog-to-digital conversion and data compression) schemes. This source coding and decoding is carried out by codec equipment.
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3.8.
Purpose
This document describes the capabilities that will be provided by the software applications ‘ Data Transmission Using Sockets’ . Its purpose is to send the information from one place to another
using through a secured interface. These programs use sockets to create the connection between the sender and the receiver. Special protocols like TCP and UDP are used to send the data through requests and acknowledgements.
1.2 Scope and objective
A Data Transmission Application is a software application which enables a user to send and interact with other users and also to send information in the form of text, images and other information typically located on a local system within the LAN. Text and images are send as attachments to the receiver where on the other side the receiver opens the attachments and gets the information send by the sender in the safer manner. This model allows a user to quickly send the small amount of information or data within the secured LAN.
1.3 Existing Model We have many number of secure data transmission methods out of which data transmission using sockets is one of the best opted methods for the secured data transmission within a LAN. This existing model uses the TCP/IP protocols to connect the both sender and the receiver locations. .
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Chapter-2 TOOLS AND ENVIRONMENT USED 2.1Software Requirement
1) Language
: JDK1.3
2) Platform
:
Windows and Linux (platform Independent)
3) Client
:
Own Client designed Using Java Socket
4) Server
:
Server designed Using Java Server Socket
5) IDE
: NetBeans IDE 6.9.1
2.2Hardware Requirement
1) RAM
2) Processor
3) Processor Speed
: 128MB (Minimum)
: Pentium 2 and above
: Above 500 MHz
13
Chapter-3
ANALYSIS & DESIGN DOCUMENT
3.1FEASIBILITY STUDY
All projects are feasible – given unlimited resources and infinite time! Unfortunately, the development of computer- based system or product is more likely plagued by a scarcity of resources and difficult delivery dates. It is both necessary and prudent to evaluate the feasibility of a project at the earliest possible time. Months or years of effort, thousands or millions of dollars, and untold professional embarrassment can be averted if an ill-conceived system is recognized early in the definition phase.
Feasibility and risk analysis are related in many ways. If project risk is great the feasibility of producing quality software is reduced. During product engineering, however, we concentrate our attention on four primary areas of interest.
3.1.1ECONOMIC FEASIBILITY
Economic feasibility attempts to weigh the costs of developing and implementing a new system, against the benefits that would accrue from having the new system in place. This feasibility study gives the top management the economic justification for the new system. A simple economic analysis which gives the actual comparison of costs and benefits are much more meaningful in this case. In addition, this proves to be a useful point of reference to compare actual costs as the project progresses. There could be various types of intangible benefits on account of automation. These could include increased customer satisfaction, improvement in product quality better decision making timeliness of information, expediting activities, improved accuracy of operations, better documentation and record keeping, faster retrieval of information, better employee morale.
14
In present system assessing student’s answers is a very time consuming activity that makes teachers cut down the time they can allocate to other duties. It is considered to play a fundamental role in the educational process. If it is developed in the electronic system like computer then the burden on the teachers can be reduced. No need to waste the time. Using out tool results will come within fraction of a second. The decision making becomes easy.
3.1.2 TECHNICAL FEASIBILITY
Evaluating the technical feasibility is the trickiest part of a feasibility study. This is because, at this point in time, not too many detailed design of the system, making it difficult to access issues like performance, costs on (on account of the kind of technology to be deployed). A number of issues have to be considered while doing a technical analysis: Understanding the different technologies involved in the proposed system before commencing the project. It should be very clear about what are the technologies that are to be required for the development of the new system. Finding out whether the organization currently possesses the required technologies. Our new web browser software is installed in any local system. So, it is necessary to install the primary software requirements prior to it. One major advantage in application is platform neutral. We can deploy and use it in any operating system since this browser works in Windows and Linux platforms as well.
3.1.3 BEHAVIORAL FEASIBILITY People are inherently resistant to change and computer has been known to facilitate changes. An estimate should be made of how strong the user is likely to move towards the development of computerized system. This software lets the owner of the desktop only to use it or say the user of the desktop can only use this software. This ensures proper authentication and authorization and no much security required as there is no data which can be corrupted.
15
3.2 FUNCTIONAL DESCRIPTION
Transmitting Message and Files between Client and Server.
The data will be valid until the Server is Valid.
Everything defined as Object oriented.
Server has been developed using Server Socket programming in Java.
Client has been developed using Socket Programming.
Transmitting data between Client and Server has been developed IP Address.
We are running it as Server Client in PC itself.
We can convert it to internet server and client processing by Implementing POP3 protocol and SMTP server. Because of Object Oriented Technology it is very easy to convert.
We have Used Data file to store username and password.
Usage of Sql Server will not be needed for sending Messages and attachments.
3.3 MODULE CLASSIFICATION 3.3.1 Client based:
Email Client ( ) Email ( ) (maintenance) User ( ) 3.3.2 Server based:
EmailServer ( ) Inbox:
InboxList( ) RecipientList( ) Design view:
FontChange( )
16
MainFunctionmenuGUI( ) MainLoginmenuGUI( ) ReadMailWindowGUI( ) SendMailWindowGUI( ) ViewGraphicsAttachments( ) ViewMediaAttachments( ) ViewtextAttachments ( ) 3.4 OPERATIONS INVOLVED IN E MAIL CLIENTS
EMail Clients: This is the module which Handles Client even ts as follows ,
Interacting with Login menu GUI of Design view.
Getting User name from server.
Sending undeleted mail back to server for storage.
Setting up Client Data Storage.
Shut down the server when finished.
Delete mail from Inbox.
Send inbox item to server for storage while exit.
Create a copy of Inbox backup for UnDeletion.
3.5 OPERATIONS INVOLVED IN E MAIL SERVER 3.5.1 EMail Server :
Create new instance of server storage vectors
Create new instance of server GUI to display messages
Starts the server 17
Set up socket to accept connections
Accept new client
Update server window details
Run indefinitely
Starts up the server in the correct manner
Extract information for server from files
Read object from file and add to server vector
Gets a vector of emails from persistent storage
Set up file input stream from persistent server file
Read object from file and add to server vector
Display message and close stream
Output server information to persistent storage
Sends all server usernames to file
Set up new file output stream
Update server message window
Send all server mail to a file
3.6 OPERATIONS INVOLVED IN E MAIL INBOX •
Check if there is mail to select
•
Get the mail selected by user
•
Delete mail from vector
•
Update read property of mail
•
Update list of emails
18
•
Open email in new mail window
•
Delete mail from mail vector
•
Display message to user
•
Retrieve the backup inbox from client
•
Display message to user
•
Updates the content of the inbox list
•
If mail is unread create different description
•
Set inbox window to description of mail
3.7 DIAGRAMS 3.7.1 Data flow Diagrams:
Context level Diagram
Client
Server
Fig 1: DFD1: Interaction between client and Server
19
First Level Data Flow Diagram
Client 1
Server
Client 2
Client 3
Fig 2: DFD2: Architecture for the functionality Java Mail in LAN
20
Fig 3: DFD3: Step wise functions of a Java Mail from initial step to the final step 3.7.2 UML Diagrams Class Diagram
A class is a set of objects that share same attributes, operations. Graphically a class is represented as a rectangle, including its name, attributes, and operations. A class diagram shows a set of classes and the relationships among them. Class Diagram for Java Mail
EMailClient
EMailServer
inbox : Vector PORT : int host : InetAddress
userNames : Vector PORT : int LoginMenu getUser() addMail() addUser() getEmail() readInMailFromServerFile() readInUserNamesFromServerFile() deleteMail()
login : JButton login()
addMail() addUser() getMail() getName() getUserNames() deleteMail() deleteAll()
InboxList selectedMailNumber : int mailDescriptor : Vector refreshListContents()
ReadMail SendMail names : String recipient : String sendEmail() setNewFont() sendAttachment()
email : Email readMail() setNewFont() unreadMail() deleteMail() undeleteMail()
Fig 4: Class Diagram
21
Use Case Diagrams
Use Case diagrams shows a set of use cases and actors and their relationships. These diagrams illustrate the static use case view of a system and are important in organizing and modeling the behaviors of a system.
Use Case
Actor
Fig 5: Case Diagram
Use Case Diagram for Login Module:
Request Server
Enter ID and Pwd
Client
Fetch the usernames
Server
Inbox
Acc esing Mails
22
Fig 6: Case Diagram For Login Module Usecase diagram 1: This diagram illustrates the Login Module, thereby the actions performed between the Client and Server. Initially the Client requests the Server and Client gets login with desired username and password, therby access the mails from the Inbox. Use Case Diagram for Storage Module:
Usernames
Read Mails
Client
Unread Mails
Storage Manager
Attachments
Fig 7: Case Diagram For Storage Module Usecase diagram 2: This diagram illustrates the Storage Module. The 23sernames are saved in
Usernames.dat and the mails are saved in Mail.dat. We can save all the attachments in our memory by downloading into our system.
23
Use Case Diagram for Client Module:
Enter login details
Login
Client
Server
Accesing Mails
Fig 8: Case Diagram For Client Module Usecase diagram 3: This diagram illustrates the Client Module. The Client gets logins with their
desired username and password. Once the client logs in, the client is free to use all the functions associated with the mailing as Accessing Mails. Use Case Diagram for Server module:
Client 1
Client 2
Login
Server
Client 3
24
Fig 9: Case Diagram for Server Module
Usecase diagram 4: This diagram illustrates the Server Module. This module integrates with all
the clients present in the LAN. This module also facilitates the clients to interact with each other.
Use Case Diagram for Sending/Receiving Module:
Login
Client 1
Read Mails
Server
Client 2
Received Mails
Fig 10: Case Diagram for Sending/Receiving Module Usecase diagram 5: This diagram illustrates the Client Module. This module uses the
client/server method which integrates all the clients and server. The clients who are connected within the LAN can interact with each other and perform respective functions related to mailing.
25
3.8 SNAPSHOTS
3.8.1 This is Email system Login menu used by clients.
3.8.2 This is server window that carries information of clients .
26
3.8.3 This is UI for creating new user
3.8.3 This is UI for login existing user.
3.8.4 This is Email system menu for clients . 27
3.8.5 This is Inbox window for clients.
3.8.6 UI for sending Email to other clients. 28
Chapter-4 29
CONCLUSIONS
1. Based on this project myself can conclude that the data transmission using sockets within a LAN enables the local users to exchange the data more conveniently. 2. This project can be enhanced with more functionality like virus checking, spasms, trash etc. The future enhancements may include more secure encryption and decryption of data being sent and received. 3. The use of socket programming enables the secure paths for the data to travel between authorized sender and receiver hence providing the security to greater extent.
30
Chapter-5
LIMITATIONS OF THE PROJECT
•
The main limitation of this project is that the end user must be connected to a secured LAN within his/her organization/institution.
•
To run the project safely, there must be installed JMF & JDK in the system.
31
Chapter-6
FUTURE SCOPE & APPLICATIONS OF PROJECT
•
The working model will be shown in the near future.
•
Using data transmission by sockets both sender and receiver can exchange data from one point to another without their physical displacement.
•
This project finds its own importance within a local area network where people from same organization can exchange data pertained to personal organization.
32
REFERENCES
WebSites:
http://en.wikipedia.com http://www.google.com
Books:
Software Engineering-A Practitioner’s Approach JAVA-The Complete Reference 33
The Complete Reference J2EE
GLOSSARY Feasibility Study
: Feasibility Study is made on the system being developed to analyse whether the system development process require training of personnel.
Data Flow Diagram(DFD): Data Flow Diagrams(DFDs) reveal relationships among and between the various components in a program or system. Technical Feasibility
: Technical Feasibility centers on the existing manual system of the test management process and to what extent it can support the support.
34
APPENDIX
Client Based Module Page No.16
Use Case Diagram Page No.22
Class Diagram Page No.21
Snapshots Page No.25
35
