<s>
GnucDNA	B-Protocol
was	O
a	O
software	B-Library
library	I-Library
for	O
building	O
peer-to-peer	O
applications	O
.	O
</s>
<s>
It	O
provides	O
developers	O
with	O
a	O
common	O
layer	O
to	O
create	O
their	O
own	O
Gnutella	B-Protocol
or	O
Gnutella2	O
client	O
or	O
network	O
.	O
</s>
<s>
As	O
a	O
separate	O
component	O
,	O
GnucDNA	B-Protocol
can	O
be	O
updated	O
independently	O
of	O
the	O
client	O
,	O
passing	O
down	O
improvements	O
to	O
the	O
applications	O
already	O
using	O
it	O
.	O
</s>
<s>
GnucDNA	B-Protocol
is	O
a	O
widespread	O
and	O
established	O
library	O
which	O
can	O
be	O
extended	O
by	O
programmers	O
.	O
</s>
<s>
It	O
includes	O
the	O
capability	O
of	O
forming	O
a	O
decentralized	O
network	O
between	O
peers	O
with	O
integrated	O
Ultrapeer	B-Protocol
support	O
,	O
allowing	O
the	O
network	O
to	O
avoid	O
bottlenecks	O
of	O
low	O
bandwidth	O
nodes	O
.	O
</s>
<s>
However	O
,	O
the	O
Ultrapeer	B-Protocol
-	O
respectively	O
Hub	O
on	O
G2	O
-	O
support	O
is	O
outdated	O
compared	O
to	O
modern	O
implementations	O
by	O
clients	O
like	O
gtk-gnutella	B-Language
and	O
Shareaza	B-Application
.	O
</s>
<s>
The	O
library	O
gives	O
programs	O
which	O
link	O
to	O
it	O
the	O
ability	O
to	O
share	O
files	O
with	O
built-in	O
support	O
for	O
uploading	O
,	O
downloading	O
,	O
file	O
queuing	O
and	O
partial	O
file	O
sharing	O
(	O
the	O
ability	O
to	O
upload	O
verified	O
chunks	O
of	O
a	O
file	O
while	O
it	O
is	O
downloading	O
)	O
,	O
hash	B-Error_Name
those	O
files	O
,	O
extract	O
meta-data	O
to	O
be	O
shared	O
through	O
the	O
network	O
,	O
and	O
the	O
ability	O
to	O
perform	O
advanced	O
searching	O
by	O
specific	O
hash	B-Error_Name
and	O
meta-data	O
parameters	O
.	O
</s>
<s>
GnucDNA	B-Protocol
also	O
offers	O
applications	O
the	O
ability	O
to	O
update	O
their	O
software	O
easily	O
through	O
the	O
same	O
P2P	O
network	O
that	O
they	O
create	O
.	O
</s>
<s>
The	O
GnucDNA	B-Protocol
component	O
is	O
COM	B-Application
based	O
to	O
inherit	O
the	O
advantage	O
of	O
language	O
independence	O
and	O
versatility	O
.	O
</s>
<s>
Applications	O
in	O
C++	B-Language
,	O
Visual	B-Language
Basic	I-Language
,	O
.Net	O
,	O
and	O
even	O
scripts	O
can	O
utilize	O
GnucDNA	B-Protocol
.	O
</s>
<s>
Also	O
by	O
being	O
a	O
separate	O
component	O
,	O
it	O
can	O
be	O
used	O
in	O
a	O
number	O
of	O
alternate	O
situations	O
such	O
as	O
part	O
of	O
a	O
plugin	B-Application
,	O
a	O
service	O
or	O
running	O
behind	O
a	O
web	B-Application
server	I-Application
.	O
</s>
<s>
Over	O
five	O
years	O
of	O
development	O
have	O
already	O
gone	O
into	O
coding	B-General_Concept
,	O
improving	O
,	O
and	O
testing	O
the	O
GnucDNA	B-Protocol
as	O
part	O
of	O
the	O
Gnucleus	O
project	O
.	O
</s>
<s>
So	O
the	O
decision	O
was	O
taken	O
,	O
to	O
move	O
the	O
Gnucleus	O
engine	O
,	O
now	O
called	O
GnucDNA	B-Protocol
,	O
into	O
a	O
separate	O
component	O
,	O
so	O
that	O
anyone	O
has	O
access	O
to	O
it	O
without	O
fear	O
of	O
falling	O
behind	O
in	O
the	O
developments	O
and	O
improvements	O
that	O
are	O
made	O
.	O
</s>
<s>
Gnucleus	O
is	O
the	O
gnutella	B-Protocol
and	O
Gnutella2	O
client	O
project	O
for	O
Microsoft	B-Application
Windows	I-Application
that	O
the	O
GnucDNA	B-Protocol
library	O
code	O
originally	O
has	O
been	O
developed	O
in	O
,	O
before	O
it	O
was	O
split	O
to	O
a	O
semi-separated	O
project	O
.	O
</s>
<s>
Just	O
like	O
the	O
GnucDNA	B-Protocol
library	O
,	O
it	O
has	O
been	O
released	O
under	O
the	O
GNU	B-License
General	I-License
Public	I-License
License	I-License
.	O
</s>
<s>
Gnucleus	O
implements	O
a	O
number	O
of	O
features	O
including	O
Ultrapeer	B-Protocol
capability	O
on	O
gnutella	B-Protocol
(	O
resp	O
.	O
</s>
<s>
Hub	O
mode	O
on	O
G2	O
)	O
,	O
multisource	O
swarming	O
downloads	O
,	O
partial-file	O
sharing	O
,	O
SHA1	B-Algorithm
file	O
hashing	O
,	O
Merkle	B-Algorithm
tree	I-Algorithm
sub	O
chunk	O
verification	O
and	O
proxy	B-Application
server	I-Application
support	O
.	O
</s>
<s>
Kiwi	O
Alpha	O
is	O
a	O
peer-to-peer	O
file	O
sharing	O
application	O
that	O
uses	O
the	O
GnucDNA	B-Protocol
library	O
to	O
connect	O
to	O
the	O
gnutella	B-Protocol
and	O
G2	O
networks	O
.	O
</s>
<s>
This	O
is	O
misleading	O
,	O
as	O
both	O
supported	O
protocols	O
do	O
not	O
obfuscate	O
the	O
user	O
's	O
IP	B-Protocol
address	I-Protocol
,	O
which	O
the	O
statement	O
seems	O
to	O
indicate	O
.	O
</s>
