An Internet Download Manager for Mobile Phones

8/6/2019 An Internet Download Manager for Mobile Phones

1/22


2/22

Introduction

This project is to develop a mobile application named as

...An Internet Download Manager which as the name says

download files from the internet and keep track on URLs.

Use HTTP Protocol to download files.

Supports to all the mobile phone users who are

...downloading data from the internet.

People moving on to special devices like PDA and java

...enables mobile phones.

An Internet Download Manager for Mobile Phones


3/22

Problem Description

The Objectives of doing this project is to,

Management of the downloaded files.

Download files anywhere at any time.



4/22

Functionalities of the System

Download Documents, Images, Audio, Video files.

Supports different file formats for download.

Download multiple files simultaneously.

Manages downloaded URLs (Download History).

Run downloaded files.(Inbuilt player).

Delete all download files and URLs.



5/22

Secondary Research

HTTP headers.

HTTP request headers.

HTTP response headers.

Content type formatting.

Data Handling Techniques.



6/22

HTTP headers

HTTP is called a stateless/Connectionless protocol because

...each ..command is executed independently.

The Application needs to understand the web host server

....before retrieving ...the file.

The application (Client) requests files from the server then it

...generates http request and http response from the both client

...and server ends.



7/22

HTTP request headers


Method type : GET /tharangasp/112.txt HTTP/1.1

Host Name: geocities.com

User-Agent: (Windows; U; Windows NT 5.1; en-US; rv:1.9.0.5) Firefox/3.0.5

Accept: text/html,application/xhtml+xml,application

Accept-Language: en-us,en;q=0.5

Accept-Encoding: gzip,deflate

Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7

Keep-Alive: 300

Connection: keep-alive


8/22

HTTP response headers


HTTP/1.x 200 OK

Date:Mon, 26 Jan 2009 17:44:55 GMT

Last-Modified: Fri, 21 Nov 2008 05:20:37 GMT

Accept-Ranges: bytes

Cache-Control: private

Connection: close

Transfer-Encoding: chunked

Content-Type: text/plain

Content-Encoding: gzip


9/22

Content type formatting


GZIP, X-ZIP Encoding..

HTTP headers that can be utilized to improve the speed of

request-response cycle.

The header tells the web server is that the requesting client is

...capable of receiving response in the encoding format as specified

...in the list.


10/22

Data Handling Techniques


Record management system (RMS)..

RMS approaches records as collection of data is regarded as a

..Record Store.

This record store has a collection of data which remains even after

.. exit in theMIDlet.

This persistent storage mechanism can be viewed as a simple ..

...record-oriented database model.


11/22

Design: High-level Use case diagram



12/22

Design:- Class Diagram

Attribute Diagram Class DiagramAn Internet Download Manager for Mobile Phones


13/22

Implementation


Packages used

javax.microedition.io.HttpConnection.

javax.microedition.io.Connector.

java.io.InputStream.

javax.microedition.media.Manager.

javax.microedition.rms.RecordStore.


14/22

Success Criteria


Implemented the system to establish the connection between

client and the server.

Able to download document, Image, Audio, Videos.

Support different file formats.

Implemented the application to downloadMultiple files

simultaneously.Able to run Downloaded files.

Able to generate the download history.


15/22

Implementation Issues Faced


Download different types of file formats (Supports .Txt, Jpeg,

GIF, Png,Mpg ,wav).

Download multiple files simultaneously (Max 5 URLs at a time).

View downloaded files.

Handling record store exceptions (when using byte arrays).


16/22

Testing

001

2002

2003


Unit Testing

It was properly tested and evaluated every component is

working properly approximately 100%.


17/22

Limitations

Download maximum offive URLs.

Application doesnt support to download large files.

Application runs only java enabled mobile phones.



18/22

Future Enhancements


Make the compatibility with mobile browsers.

Schedule downloads.

Accelerate the downloads

Integrate Ftp client.


19/22

Conclusion


System suits well in java enabled mobile phones.

Downloading facilities successfully implemented.

All the core system functionalities identified

All the functions are working 100%.


20/22

System Demonstration



21/22

Q & A



22/22