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ReadMeDocs/WotIsProxy

This website contains an archive of files for the Acorn Electron, BBC Micro, Acorn Archimedes, Commodore 16 and Commodore 64 computers, which Dominic Ford has rescued from his private collection of floppy disks and cassettes.

Some of these files were originally commercial releases in the 1980s and 1990s, but they are now widely available online. I assume that copyright over them is no longer being asserted. If you own the copyright and would like files to be removed, please contact me.

Tape/disk: Home » Personal collection » Acorn hard disk » apps » web
Filename: ReadMeDocs/WotIsProxy
Read OK:
File size: 0C3C bytes
Load address: 0000
Exec address: 0000
Duplicates

There is 1 duplicate copy of this file in the archive:

File contents
Help on Proxies and how to use them
===================================

The best guide to proxies may be found at:

http://www-cache.demon.co.uk:8080/


However, here is a message taken from demon.ip.support.archimedes ...

In message <19950605.222342.63@sitex.demon.co.uk> Neil Tarrant wrote:

A proxy machine is an HTTP server that 'passes on' requests to other sites.
It requests the document on your behalf.

At first this may seem a little pointless, but after using one for a while
you'll really appreciate the benefits. Most internet WWW users browse
pages in the United States. Going over to the States each time you want to
read a HTTP doc is sluggish (to say the least). A proxy HOLDS recent copies
of *popular* documents and hence can often give a **MUCH** faster response. A
good example of this is 'http://www.playboy.com/' which is a *very* popular
home page. Accessing this without the proxy is very slow, but with the proxy,
response is *very* fast.

HTTP proxy is also very useful when browsing European sites. Not many
people realise that requests to Europe USUALLY go via the US, which adds
a hell of an overhead to the request time (it's often faster accessing
Australia).

The other important use of proxy machines (well some anyway) is that they
provide non-HTTP resource conversion. For example, gopher requests return
gibberish if fetched directly, but a proxy will translate the gibberish
into a nicely laid out HTTP document. The same is true of FTP (etc), which
is tricky to provide via a local client fetcher.

Therefore an application such as WebGopher, can provide HTTP, gopher, ftp and
others, without much programming.  [ArcWeb will handle HTTP and FTP and
gopher requests itself, and use the resource conversion utilities for gopher
and WAIS.  Ed.]

Note, however, WebGopher can do (and only does) direct gopher fetching,
'coz it's nicer', but the others can be done via a different proxy. FTP,
for example, is ONLY handled via the proxy (it took me all of 15 minutes
to add FTP support this way).

Direct fetching is usually more efficient for non-HTTP protocols, as it's
mainly for HTTP (that's where most benefits will be gained).

[If you want to use proxies, and you are a Demon customer, then use,
www-cache.demon.co.uk on port 8080 as your HTTP proxy and also for FTP,
gopher and WAIS. If you in the UK academic community then use
wwwcache.hensa.ac.uk on port 8080 except WAIS which is on port 80 on
wwwcache.hensa.ac.uk  Ed.].

NOTE: It is considered 'rude' to use an external proxy UNLESS you have
no viable alternative (ie use demon instead of hensa for HTTP), as it
places undesirable strain on the overloaded general proxy machines.

I hope this clears up the confusion many new users seem to have regarding
proxy machine usage. :-)

[For more details on how ArcWeb handles proxies, load ArcWeb and click
on the icon bar icon to open the welcome page.  Then follow the link to
the User Manual and then follow the 'Proxy' link.   Ed.]

--------------------
Neil Tarrant
(Modifications by S.Brodie marked as [Ed.])
(Modified by S.Brodie (8/11/95) to reflect Demon's new WWW proxy setup)
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00000020  74 68 65 6d 0a 3d 3d 3d  3d 3d 3d 3d 3d 3d 3d 3d  |them.===========|
00000030  3d 3d 3d 3d 3d 3d 3d 3d  3d 3d 3d 3d 3d 3d 3d 3d  |================|
00000040  3d 3d 3d 3d 3d 3d 3d 3d  0a 0a 54 68 65 20 62 65  |========..The be|
00000050  73 74 20 67 75 69 64 65  20 74 6f 20 70 72 6f 78  |st guide to prox|
00000060  69 65 73 20 6d 61 79 20  62 65 20 66 6f 75 6e 64  |ies may be found|
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000001e0  72 20 61 20 77 68 69 6c  65 0a 79 6f 75 27 6c 6c  |r a while.you'll|
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00000ba0  45 64 2e 5d 0a 0a 2d 2d  2d 2d 2d 2d 2d 2d 2d 2d  |Ed.]..----------|
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00000c00  20 53 2e 42 72 6f 64 69  65 20 28 38 2f 31 31 2f  | S.Brodie (8/11/|
00000c10  39 35 29 20 74 6f 20 72  65 66 6c 65 63 74 20 44  |95) to reflect D|
00000c20  65 6d 6f 6e 27 73 20 6e  65 77 20 57 57 57 20 70  |emon's new WWW p|
00000c30  72 6f 78 79 20 73 65 74  75 70 29 0a              |roxy setup).|
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