Progress-WebClient.pdf

Progress WebClient

The Progress WebClient makes

it easy to Web-enable and deploy

Progress applications with a

rich, graphical user interface over

the Web.

The Progress ® WebClient with

IntelliStream TM technology enables

you to deploy an application with a

thin client running a rich, graphical

user interface—over the Internet, an

intranet, or a LAN. Application

developers can deploy a feature-

rich client UI in the Progress 4GL

and leverage the Internet for

server functionality. The WebClient

provides a real-time graphical client

running on your end user’s PC

without the use of any emulation

technology. With the WebClient, you

don’t have to trim down an applica-

tion’s interface and approximate it

in HTML so that a Web browser

can display it.

UI triggers and formatting, and

high performance.

You can launch the WebClient

either from a Shortcut or from a

Web browser, but it does not actually

run in the browser. The Progress

WebClient runs in its own Microsoft

window as a separate application,

not as a traditional plug-in to a

Web browser.

HIGHLIGHTS

Thin-client solution that is ideal

for providing a feature-rich, high

performance interface with low

network bandwidth

IntelliStream TM technology

dynamically and securely delivers

application components

Easy User Installation,

Speedy Deployment

Many scenarios require the ability

to install software over the Internet

or a LAN. An end user can install

the WebClient, packaged into a

self-extracting executable to be

downloaded over the Internet when

the user clicks on a hyperlink or an

object button. Or you can distribute

the WebClient and the client code

for your application on a CD.

It’s your choice. And, how a user

downloads an application is your

choice. For example, your users can

download all the client application

code at once, or you can package

your application so the user

downloads only the required

FEATURES AT A GLANCE

The Progress WebClient provides

the same support for graphical

user interfaces as the standard

Progress client for Microsoft

Windows. Once end users install the

WebClient on their PC, they can

quickly download and run your

application. The WebClient requires

less bandwidth to install and has

a much smaller footprint than the

traditional GUI client, yet it retains

all of the functionality, including

– IntelliStream TM packages and

delivers applications

– Quick application download over

the Internet, intranet or LAN

– Built-in security features

– Communicates to AppServer

through HTTP/HTTPS tunneling

or TCP/IP

components, minimizing the amount

of data actually placed on the user’s

disk and reducing network trafﬁc.

includes simple and ﬂexible installation

technology that performs many

common installation tasks for you.

If you prefer, you can combine

IntelliStream installation technology

with browser-based installation utilities,

such as InstallShield. It’s your choice.

store application resources on a Web

server or with the Progress AppServer.

IntelliStream simpliﬁes preparing

applications for deployment by

providing an Application Assembler

that allows you to create components

that reﬂect how your customers will

use your application.

Application Service Providers (ASPs) can

especially beneﬁt from the WebClient

thanks to how it eases deploying applica-

tions with feature-rich interfaces over the

Web. But you don’t have to be an ASP

to take advantage of it. For Progress

developers, the WebClient is a way to

deploy Internet applications with a rich

UI, without having to invest in another

technology. All that is required is your

knowledge of developing GUI applica-

tions with the 4GL.

After an application’s initial deployment,

IntelliStream provides highly efﬁcient

provisioning. It enables the WebClient

to determine whether the application

components have changed and the

application needs to be updated. Then

the WebClient downloads only those

changed resources to the client machine.

It delivers exactly the parts of an

application that end users need, when

they need them.

When you make changes to source

code, IntelliStream ﬁgures out which

components have changed and delivers

only those components to users. You

also have the option of designating an

upgrade as optional or mandatory, giving

you and your users even more ﬂexibility.

IntelliStream TM Packages and

Delivers Applications

Ensure Integrity with

Digital Certiﬁcates

Progress IntelliStream is technology that

makes the WebClient “smart” as it

automates many deployment tasks. It

IntelliStream features a ﬂexible, server-

based provisioning model. You can

IntelliStream also eases the implemen-

tation of various levels of security.

Downloading Application Components as Needed With IntelliStream TM

Remote Requests

AppServer

Progress WebClient

IntelliStream

Web Server

IntelliStream

Technology

Client Application

Application Componets

IntelliStream TM technology allows the WebClient to download or update only those application components that users need when they need

them, whether over the Internet, intranet, or a LAN. This illustration shows one possible conﬁguration where an AppServer serves as the

application delivery server, but application resources can reside on a Web server instead.

Deploying Thin Client GUI Application Over the Internet

Web Server

AppServer

Progress

RDBMS

HTTP

AppServer Internet

Adapter (AIA)

NameServer

Progress WebClient

Web Server

HTTPS

AppServer

Progress

RDBMS

Secure AppServer

Internet Adapter

(AIA/S)

NameServer

The Secure

AppServer

The Progress WebClient communicates with the Progress AppServer through both HTTP and HTTPS tunneling. The Secure

AppServer enables HTTPS tunneling with support for SSL encryption.

In addition to providing user authenti-

cation through the AppServer, it

allows you to digitally sign your

application. With digital signatures,

you can address your end users’

security concerns by assuring them

of the application’s authenticity.

having them provide their security

information only once.

and business logic. But in the long-

run, this separation allows you to

protect the investment you’ve made

in your business logic.

Progress AppServer Provides Scalable

Architecture, Secure Communications

The Progress WebClient can

communicate with the Progress

AppServer through ﬁrewalls using

HTTP tunneling. This is enabled

by the AppServer Internet Adapter,

which is a Java servlet that resides

on a Web server. The AppServer

Internet Adapter also supports

HTTPS tunneling to ensure secure

communications by providing support

for encrypted Secure Sockets Layer

(SSL) connections.

The Progress AppServer is the key to

enabling a robust, scalable application

to operate with a thin client for user

presentation. The purpose of the

Progress WebClient is only to run user

interface code, leaving the database

access and other business logic and

validation functions to be done by

the AppServer. This requires that an

application be architected with

proper separation of user interface

Although security is a prime concern

among users, some users don’t like the

inconvenience of multiple logins and

security checkpoints. To enhance the

user’s experience, IntelliStream has

security caching to implement “single

sign-on.” Single sign-on hides much

of the back-and-forth trafﬁc through

security checkpoints from the user by

Requirements

Database Servers:

Architecture:

Progress Version 8/9 RDBMS or

Progress DataServer run on:

– 3-tier (UI, application logic, database)

with the business logic separated

from User Interface.

– All database connections must be

handled by the Progress AppServer.

– Windows NT/2000

– Supported UNIX platforms

– IBM OS/400

Internet, Extranet, Intranet:

Client:

If you want to implement HTTP tunnel-

ing, you must have the Progress

AppServer Internet Adapter (AIA),

which ships with the Progress

AppServer. For HTTPS (with SSL)

tunneling support, you must have

the Progress AIA/S.

– PC Windows 95/98/NT/2000

– Progress 4GL Graphical User

Interface

Application Servers:

Progress AppServer Version 9.1B

or higher run on:

LAN:

– Windows NT/2000

– Supported UNIX platforms

– IBM OS/400

The Progress WebClient can be

deployed as a client over a Local Area

Network without the use of a Web

server.

AIA and AIA/S:

A Web server that supports a Java

Servlet Engine (JSE), including:

– Tomcat 3.1 on Apache Server 1.3.9

– ServletExec 2.2 and 3.0 or JRun 2.3.3

and 3.0 on iPlanet/Netscape or

Microsoft IIS Servers

Corporate Headquarters

Progress Software Corporation, 14 Oak Park, Bedford, MA 01730 USA Tel: +1 781 280 4000 Fax: +1 781 280 4095

Europe/Middle East/Africa Headquarters

Progress Software Europe B.V. Schorpioenstraat 67 3067 GG Rotterdam,The Netherlands Tel: 31 10 286 5700 Fax: 31 10 286 5777

Latin American Headquarters

Progress Software Corporation, 2255 Glades Road, One Boca Place, Suite 300 E, Boca Raton, FL 33431 USA Tel: +1 561 998 2244 Fax: +1 561 998 1573

Asia/Paciﬁc Headquarters

Progress Software Pty. Ltd., 1911 Malvern Road, Malvern East, 3145, Australia Tel: 61 3 9805 8500 Fax: 61 39 885 9473

Progress and WebSpeed are registered trademarks, and AppServer is a trademark of Progress Software Corporation. All other trademarks,

marked and not marked, are the property of their respective owners.

www.progress.com

Speciﬁcations subject to change without notice.

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