<s>
Agora	B-Protocol
was	O
a	O
World	O
Wide	O
Web	O
email	B-Protocol
browser	I-Protocol
and	O
was	O
a	O
proof	O
of	O
concept	O
to	O
help	O
people	O
to	O
use	O
the	O
full	O
internet	O
.	O
</s>
<s>
Agora	B-Protocol
was	O
an	O
email-based	O
web	B-Application
browser	I-Application
designed	O
for	O
non-graphic	O
terminals	O
and	O
to	O
help	O
people	O
without	O
full	O
access	O
to	O
the	O
internet	O
such	O
as	O
in	O
developing	O
countries	O
or	O
without	O
a	O
permanent	O
internet	O
connection	O
.	O
</s>
<s>
Similar	O
to	O
W3Gate	O
,	O
Agora	B-Protocol
was	O
a	O
server	B-Application
application	I-Application
designed	O
to	O
fetch	O
HTML	B-Language
documents	O
through	O
e-mail	O
rather	O
than	O
http	B-Protocol
.	I-Protocol
</s>
<s>
Agora	B-Protocol
was	O
not	O
a	O
client	B-Protocol
application	I-Protocol
.	O
</s>
<s>
To	O
access	O
the	O
Internet	O
you	O
had	O
to	O
install	O
the	O
Agora	B-Protocol
browser	I-Protocol
on	O
a	O
server	B-Application
and	O
send	O
Agora	B-Protocol
an	O
email	O
with	O
the	O
requested	O
URL	O
.	O
</s>
<s>
The	O
Agora	B-Protocol
application	O
would	O
send	O
an	O
email	O
back	O
with	O
the	O
requested	O
content	O
of	O
the	O
link	O
.	O
</s>
<s>
The	O
email	O
which	O
was	O
sent	O
by	O
the	O
server	B-Application
,	O
contained	O
the	O
HTML	B-Language
source	O
code	O
so	O
that	O
a	O
normal	O
web	B-Application
browser	I-Application
was	O
able	O
to	O
display	O
the	O
page	O
as	O
it	O
should	O
be	O
or	O
in	O
a	O
lynx-style	O
.	O
</s>
<s>
The	O
servers	O
could	O
be	O
configured	O
differently	O
so	O
that	O
some	O
servers	O
sent	O
emails	O
back	O
containing	O
only	O
JavaScript	B-Language
,	O
because	O
the	O
content	O
was	O
deeper	O
on	O
the	O
page	O
.	O
</s>
<s>
Agora	B-Protocol
was	O
praised	O
for	O
handling	O
frames	B-General_Concept
correctly	O
,	O
although	O
other	O
similar	O
applications	O
were	O
able	O
to	O
handle	O
this	O
by	O
serving	O
the	O
source	O
code	O
and	O
rerequest	O
the	O
used	O
frame	O
.	O
</s>
<s>
Although	O
Agora	B-Protocol
was	O
based	O
on	O
email	O
communication	O
it	O
was	O
able	O
to	O
search	O
by	O
different	O
search	B-Application
engines	I-Application
:	O
Archie	B-Protocol
,	O
MetaCrawler	B-Application
,	O
Lycos	B-Application
,	O
Yahoo	O
!,	O
WAIS	B-Protocol
Search	O
in	O
Oxford	O
Univ	O
,	O
Hyper	O
RFC	O
,	O
WebCrawler	B-Application
,	O
Veronica	B-Protocol
Search	I-Protocol
,	O
AltaVista	O
and	O
Google	B-Application
.	I-Application
</s>
<s>
Agora	B-Protocol
limits	O
the	O
number	O
of	O
requests	O
processed	O
in	O
each	O
message	O
to	O
10	O
to	O
prevent	O
the	O
service	O
from	O
being	O
attacked	O
by	O
messages	O
containing	O
excessive	O
commands	O
that	O
could	O
cause	O
a	O
DDOS	O
attack	O
.	O
</s>
<s>
The	O
Agora	B-Protocol
server	B-Application
is	O
based	O
on	O
the	O
Line	B-Protocol
Mode	I-Protocol
Browser	I-Protocol
and	O
on	O
the	O
libwww	B-Protocol
and	O
thus	O
it	O
supported	O
different	O
kinds	O
of	O
internet	O
protocols	O
besides	O
the	O
classical	O
http	B-Protocol
and	O
gopher	B-Protocol
browsing	O
,	O
namely	O
NNTP	B-Protocol
,	O
Archie	B-Protocol
,	O
Finger	B-Application
,	O
WAIS	B-Protocol
.	O
</s>
<s>
Although	O
Agora	B-Protocol
was	O
able	O
to	O
handle	O
many	O
protocols	O
,	O
the	O
interactive	O
telnet	B-Protocol
protocol	O
was	O
an	O
exception	O
.	O
</s>
<s>
From	O
Agora	B-Protocol
0.7d	O
it	O
was	O
possible	O
to	O
search	O
some	O
searchable	B-Application
sites	O
by	O
adding	O
the	O
search	O
terms	O
separated	O
by	O
spaces	O
after	O
the	O
URL	O
,	O
but	O
this	O
would	O
not	O
work	O
with	O
forms	O
.	O
</s>
<s>
Since	O
Agora	B-Protocol
version	O
0.8e	O
it	O
was	O
possible	O
to	O
split	O
the	O
requested	O
URLs	O
into	O
two	O
or	O
more	O
lines	O
.	O
</s>
<s>
Data	B-General_Concept
compression	I-General_Concept
with	O
uuencoded	B-Device
by	O
gzip	B-Application
or	O
zip	B-Application
was	O
also	O
integrated	O
.	O
</s>
<s>
Agora	B-Protocol
version	O
0.8f	O
determined	O
frames	B-General_Concept
and	O
linked	O
pictures	O
goto	O
and	O
the	O
answer	O
mail	O
get	O
help	O
in	O
these	O
cases	O
.	O
</s>
<s>
One	O
limitation	O
of	O
Agora	B-Protocol
was	O
that	O
it	O
had	O
an	O
integrated	O
limit	O
for	O
the	O
output	O
mail	O
of	O
about	O
10,000	O
lines	O
(	O
originally	O
5,000	O
)	O
primarily	O
to	O
protect	O
users	O
and	O
the	O
network	O
from	O
excessive	O
bandwidth/resource	O
usage	O
.	O
</s>
<s>
With	O
this	O
limitation	O
,	O
uuencoded	B-Device
files	O
would	O
not	O
exceed	O
1	O
megabyte	O
because	O
some	O
operating	B-General_Concept
systems	I-General_Concept
and	O
email	B-Protocol
clients	I-Protocol
had	O
problems	O
with	O
files	O
larger	O
than	O
1MB	O
.	O
</s>
<s>
Uuencoded	B-Device
files	O
used	O
too	O
much	O
bandwidth	O
and	O
so	O
data	B-General_Concept
compression	I-General_Concept
was	O
integrated	O
.	O
</s>
<s>
Since	O
most	O
websites	O
contained	O
links	O
to	O
inline	O
images	O
or	O
binary	O
files	O
such	O
as	O
archives/executables	O
Agora	B-Protocol
had	O
to	O
uuencode	B-Device
these	O
files	O
prior	O
to	O
sending	O
them	O
.	O
</s>
<s>
Usenet	O
support	O
was	O
read	O
only	O
because	O
the	O
server	B-Application
was	O
anonymous	O
.	O
</s>
<s>
The	O
consequences	O
were	O
that	O
the	O
W3C	O
servers	O
got	O
too	O
many	O
requests	O
and	O
they	O
had	O
to	O
shut	O
down	O
their	O
Agora	B-Protocol
implementation	O
.	O
</s>
<s>
To	O
run	O
Agora	B-Protocol
on	O
a	O
server	B-Application
,	O
the	O
server	B-Application
had	O
to	O
have	O
Perl	B-Language
installed	O
.	O
</s>
<s>
The	O
libwww	B-Protocol
binaries	O
www_*	O
.	O
</s>
<s>
Agora	B-Protocol
ignored	O
completely	O
the	O
different	O
kinds	O
of	O
applets	O
which	O
were	O
popular	O
at	O
that	O
time	O
:	O
Tcl	B-Operating_System
,	O
Tk	B-Application
,	O
Java	B-Application
and	O
Python	B-Language
.	O
</s>
<s>
Agora	B-Protocol
could	O
not	O
handle	O
HTML	B-General_Concept
tables	I-General_Concept
properly	O
.	O
</s>
