<s>
Netty	B-Language
is	O
a	O
non-blocking	B-Language
I/O	I-Language
client-server	O
framework	B-Architecture
for	O
the	O
development	O
of	O
Java	B-Device
network	O
applications	O
such	O
as	O
protocol	O
servers	O
and	O
clients	O
.	O
</s>
<s>
The	O
asynchronous	O
event-driven	B-Application
network	O
application	O
framework	B-Architecture
and	O
tools	O
are	O
used	O
to	O
simplify	O
network	B-Operating_System
programming	I-Operating_System
such	O
as	O
TCP	B-Protocol
and	O
UDP	B-Protocol
socket	O
servers	O
.	O
</s>
<s>
Netty	B-Language
includes	O
an	O
implementation	O
of	O
the	O
reactor	B-Operating_System
pattern	I-Operating_System
of	O
programming	O
.	O
</s>
<s>
Originally	O
developed	O
by	O
JBoss	B-Language
,	O
Netty	B-Language
is	O
now	O
developed	O
and	O
maintained	O
by	O
the	O
Netty	B-Language
Project	O
Community	O
.	O
</s>
<s>
Besides	O
being	O
an	O
asynchronous	O
network	O
application	O
framework	B-Architecture
,	O
Netty	B-Language
also	O
includes	O
built-in	O
implementations	O
of	O
SSL/TLS	B-Protocol
,	O
HTTP	B-Protocol
,	O
HTTP/2	B-Protocol
,	O
HTTP/3	B-Protocol
,	O
WebSockets	B-Protocol
,	O
DNS	B-Application
,	O
Protocol	B-Protocol
Buffers	I-Protocol
,	O
SPDY	B-Protocol
and	O
other	O
protocols	O
.	O
</s>
<s>
Netty	B-Language
is	O
not	O
a	O
Java	B-Device
web	B-Language
container	I-Language
,	O
but	O
is	O
able	O
to	O
run	O
inside	O
one	O
,	O
and	O
supports	O
message	O
compression	B-General_Concept
.	O
</s>
<s>
Netty	B-Language
has	O
been	O
actively	O
developed	O
since	O
2004	O
.	O
</s>
<s>
Beginning	O
with	O
version	O
4.0.0	O
,	O
Netty	B-Language
also	O
supports	O
the	O
usage	O
of	O
NIO.2	O
as	O
a	O
backend	B-Architecture
,	O
along	O
with	O
NIO	B-Language
and	O
blocking	O
Java	B-Device
sockets	O
.	O
</s>
