<s>
MsQuic	B-Language
is	O
a	O
free	B-License
and	I-License
open	I-License
source	I-License
implementation	O
of	O
the	O
IETF	O
QUIC	B-Protocol
protocol	I-Protocol
written	O
in	O
C	B-Language
that	O
is	O
officially	O
supported	O
on	O
the	O
Microsoft	B-Application
Windows	I-Application
(	O
including	O
Server	B-Device
)	O
,	O
Linux	B-Application
,	O
and	O
Xbox	B-Device
platforms	O
.	O
</s>
<s>
The	O
project	O
also	O
provides	O
libraries	O
for	O
macOS	B-Application
and	O
Android	B-Application
,	O
which	O
are	O
unsupported	O
.	O
</s>
<s>
It	O
is	O
designed	O
to	O
be	O
a	O
cross-platform	B-Operating_System
general	O
purpose	O
QUIC	B-Protocol
library	O
optimized	O
for	O
client	O
and	O
server	B-Device
applications	O
benefitting	O
from	O
maximal	O
throughput	O
and	O
minimal	O
latency	O
.	O
</s>
<s>
The	O
source	O
code	O
is	O
licensed	O
under	O
MIT	B-License
License	I-License
and	O
available	O
on	O
GitHub	B-Application
.	O
</s>
<s>
Among	O
its	O
features	O
are	O
,	O
in	O
part	O
,	O
support	O
for	O
asynchronous	B-Architecture
IO	I-Architecture
,	O
receive-side	O
scaling	O
(	O
RSS	O
)	O
,	O
UDP	B-Protocol
send	O
and	O
receive	O
coalescing	O
,	O
and	O
connection	O
migrations	O
that	O
persist	O
connections	O
between	O
client	O
and	O
server	B-Device
to	O
overcome	O
client	O
IP	O
or	O
port	O
changes	O
,	O
such	O
as	O
when	O
moving	O
throughout	O
mobile	O
networks	O
.	O
</s>
<s>
Both	O
the	O
HTTP/3	B-Protocol
and	O
SMB	B-Operating_System
stacks	O
of	O
Microsoft	B-Application
Windows	I-Application
leverage	O
MsQuic	B-Language
,	O
with	O
msquic.sys	O
providing	O
kernel-mode	O
functionality	O
.	O
</s>
<s>
Being	O
dependent	O
upon	O
Schannel	B-Protocol
for	O
TLS	O
1.3	O
,	O
kernel	O
mode	O
therefore	O
does	O
not	O
support	O
0-RTT	O
.	O
</s>
<s>
User-mode	B-Operating_System
programs	O
can	O
implement	O
MsQuic	B-Language
,	O
with	O
support	O
0-RTT	O
,	O
through	O
msquic.dll	O
,	O
which	O
can	O
be	O
built	O
from	O
source	O
code	O
or	O
downloaded	O
as	O
a	O
shared	O
library	O
through	O
binary	O
releases	O
on	O
the	O
repository	O
.	O
</s>
<s>
Its	O
support	O
for	O
the	O
Microsoft	O
Game	O
Development	O
Kit	O
makes	O
MsQuic	B-Language
possible	O
on	O
both	O
Xbox	B-Device
and	O
Windows	O
.	O
</s>
