AdaIC NEWS                                       Fall 1995

Ada on the Internet

surfin' the

World Wide Web
for Ada


IN THIS SECTION:

Surfing the Web
Hyperlinks From the AdaIC's Web Pages to Other Ada Resources
Text-Based Research Tools
Gopher
File Transfer Protocol - Ftp
For Those Without Internet Access
Table 6: Web Browsers Available Via Ftp
Table 7: Gopher and Ftp Client Software Sites

"Surfing the Web" sounds like skateboarding -- more for fun than for long-distance travel. In fact, though, Web surfing is a highly productive means of getting to Ada information all over world. The Ada community relies on the instantaneous connections of the Internet. And the Ada Information Clearinghouse's Internet host serves as a hub for the community. The host itself contains thousands of files -- reports, information flyers, source code, standards information, archives of past activities, the works. The AdaIC's Web server connects you to over 200 other Ada sites.

Getting aboard the AdaIC Web server is simple if you have an Internet account and a browser such as Mosaic or Netscape. (For those without Internet access, there's a dial-up line to resources on the AdaIC host itself. See "For those without Internet access", page 13.)

The World Wide Web (WWW) is an information system based on hypertext and hypermedia which links text, audio, video, and graphics-based files via a selected set of keywords. Using WWW browser software such as Mosaic or Netscape, you can access AdaIC files or link to Ada information located at various sites throughout the world. The browser software enables you to point and click in a graphical environment, and it also supports file transfer protocol (ftp), gopher, and other Internet protocols, unifying Internet access tools under one application.

To reach the AdaIC WWW pages, you must be connected to the Internet and have a browser program installed and configured on your computer. Table 6 provides a list of browsers you can download from the Internet.

The AdaIC's Web address or uniform resource locator (URL) is http://sw-eng.falls-church.va.us. Http stands for hypertext transferprotocol and distinguishes the type of protocol to be used during the Internet session. For example, if you wanted to use gopher or ftp via the World Wide Web, the URL would begin with ftp://sw-eng.falls-church.va.us or gopher://sw-eng.falls-church.va.us.

Once you reach the Software Engineering "home" page, simply click on the AdaIC logo to access Ada resources.

The AdaIC Web pages rely on an image map to guide you to the information on our server. For example, a pointer to the Ada Language Reference Manual can be found by clicking on the word "Standards" on the image map.

On each Web page, the highlighted, underlined text indicates a link to other documents and pages. The AdaIC Web pages are indexed using Wide Area Information Server (WAIS), an Internet database system, and are capable of being searched using keywords. Click on the word "Search" on the image map to search the contents of the AdaIC server. To help tailor your investigation, we've provided a search function at the top of each page. For example, if you were looking for information about a specific development tool, you could go to the "Tools" page and limit your search to the contents of that page.

We encourage you to surf our Web pages for the latest information on Ada events, news, and the advent of new software development support.

We are always seeking ways to improve the content of our host. We hope you'll take the time to give us feedback either by filling out our on-line surveys or by calling the AdaIC at 1-800/232-4211.

Table 6

Web Browsers available via ftp

Operating SystemBrowserFtp Location
MacintoshMosaic ftp.ncsa.uiuc.edu/Mosaic/Mac
" " MacWeb ftp.einet.net/einet/mac/macweb
" " Netscape ftp.netscape.com/pub/netscape/mac/netscape-1.1N.hqx
Windows Cello fatty.law.cornell.edu/pub/LII/Cello
" " Mosaic ftp.ncsa.uiuc.edu/Mosaic/Windows
" "Netscape ftp.netscape.com/pub/netscape1.2b6/N1612B6.EXE

Hyperlinks from the AdaIC's Web pages to other Ada resources

The Ada Information Clearinghouse Web pages are linked to more than 200 Ada-related organizations to provide a research hub for software developers. The list grows longer every day as we locate more and more resources. If your organization has a Web site and is not yet linked to our Web pages, please call us at 1-800/232-4211 or send e-mail to adainfo@sw-eng.falls-church.va.us with your URL.


Text-Based Research Tools
If your organization does not yet have WWW browsing capability, you can still access all of the AdaIC's information resources with the text-based utilities gopher and ftp. Users from sites around the world download 14,000 files from the AdaIC Internet host each month. You can, too!

Gopher
Gopher is a menu-driven, client-server system designed to simplify Internet navigation. A gopher server provides access to main directories, subdirectories, and individual files on a host machine in addition to connecting to other gopher servers throughout the world. It allows you to view the text of entire files before you download them.

In order to find out if gopher client software is installed at your site, simply type gopher at the command prompt. Gopher client software for both Macintosh and DOS/Windows is available as freeware via anonymous ftp from various sites around the Internet. (See Table 7.)

Table 7

Sites from which to download
ftp and gopher clients.

TurboGopher for Macintosh
ftp boom.box.micro.umn.edu

GopherAPP for Macintosh
ftp ftp.bio.indiana.edu/
util/gopher/gopherapp

PC Gopher for DOS/Windows
ftp sunsite.unc.edu
pub/packages/gopher/PC_client

HGopher for DOS/Windows
ftp lister.cc.ic.ac.uk
files pub/wingopher/hgopher.exe

Gopher for Unix
ftp boom.box.micro.umn.edu
70/11/gopher/Unix

If a gopher client server is installed, type sw-eng.falls-church.va.us at your Internet system prompt to access the AdaIC gopher. Use the down- and up-arrows on your keyboard to place the cursor-arrow next to Ada Information Clearinghouse/ and hit the return key to access the AdaIC public files. The forward slash [/] after each main directory name indicates that there are subdirectories and files within that directory.

You can search the AdaIC gopher server using keywords -- just type a forward slash at any point during the gopher session. A prompt will appear to guide you through the search process.

When you find a file you wish to download, type D to transfer it to your desktop. You can view other available commands by typing ? at any timeduring the session.

File Transfer Protocol -- FTP
The ftp utility is quick way to access and transfer files from remote electronic archives to a client's desktop. As it lacks a text and menu-browsing feature, ftp is most useful when you already have a good idea of a file's location on a host machine.

To access the AdaIC's on-line resources from your desktop, type ftp sw-eng.falls-church.va.us at your host prompt. When asked for a login name, type anonymous. When asked for a password, type your full e-mail address. (Note: as with any password, your address will not appear as you type it.)

Once logged into the AdaIC ftp server, type cd public to access the public files. Then type cd adaic to access the AdaIC's resources. Use ls or dir to view the contents of a directory, and cd to access a desired subdirectory. Typing cd .. will return you to the previous directory.

To transfer a file to your desktop, type get followed by the file name. When downloading graphics or image file formats, be sure to type binary before invoking the get command. Ask your system administrator for additional ftp commands.

It is recommended that users examine the README files provided, as they list the names and descriptions of all files contained within their respective directories. You can rename the README files as you download them by typing get README newname, where newname is a filename of your choosing.

For those without Internet access
You don't need Internet access to use gopher if you have a modem and home computer. You can use the AdaIC's gopher server by calling our dial-up line: 703/681-2845. Set your communications parameters as follows:

baud rate: 300-28,800
data bits: 8
parity: None
stop bits: 1
flow control: XON/XOFF
emulation: VT100

Once a connection is achieved, login as "guest" and give the password "Ada4sw-eng" (case sensitive). This will hook you up directly to our gopher server.

If you're on the Internet but your host doesn't support gopher or other search facilities, but does let you Telnet to another host, you can log in as "guest" and get the gopher service.

Feel free to call the AdaIC at 1-800/232-4211 for assistance!


        Back                    Contents                    Next