<s>
Rocket	B-Protocol
Streaming	I-Protocol
Audio	I-Protocol
Server	I-Protocol
(	O
RSAS	O
)	O
is	O
webserver	B-Application
for	O
delivering	O
live	O
streaming	O
audio	O
over	O
the	O
internet	O
.	O
</s>
<s>
It	O
receives	O
live	O
,	O
compressed	O
audio	O
from	O
a	O
streaming	O
audio	O
encoder	O
and	O
delivers	O
that	O
audio	O
to	O
listeners	O
connected	O
to	O
the	O
server	B-Application
.	O
</s>
<s>
RSAS	O
was	O
started	O
as	O
a	O
drop-in	B-Architecture
replacement	I-Architecture
for	O
Icecast	B-Application
,	O
designed	O
to	O
overcome	O
the	O
performance	O
limitations	O
and	O
other	O
flaws	O
in	O
Icecast	B-Application
discovered	O
while	O
building	O
the	O
Radio	O
Mast	O
streaming	O
audio	O
CDN	O
.	O
</s>
<s>
RSAS	O
was	O
developed	O
in	O
C++	B-Language
by	O
Albert	O
Santoni	O
in	O
2019	O
after	O
difficulty	O
scaling	O
up	O
the	O
Icecast-based	O
Radio	O
Mast	O
streaming	O
audio	O
CDN	O
and	O
dissatisfaction	O
with	O
the	O
direction	O
of	O
Icecast	B-Application
development	O
.	O
</s>
<s>
RSAS	O
is	O
a	O
webserver	B-Application
for	O
distributing	O
live	O
streaming	O
audio	O
,	O
available	O
on	O
Linux	B-Application
,	O
Windows	O
,	O
and	O
FreeBSD	B-Operating_System
.	O
</s>
<s>
It	O
implements	O
the	O
HTTP	O
,	O
SOURCE	O
,	O
and	O
HLS	B-Protocol
protocols	I-Protocol
,	O
</s>
<s>
as	O
well	O
as	O
APIs	O
from	O
Icecast	B-Application
to	O
provide	O
compatibility	O
with	O
Icecast-related	O
software	O
,	O
such	O
as	O
encoders	O
.	O
</s>
<s>
Created	O
as	O
a	O
replacement	O
for	O
Icecast	B-Application
,	O
RSAS	O
is	O
compatible	O
with	O
the	O
configuration	O
file	O
format	O
from	O
Icecast	B-Application
2.4	O
.	O
</s>
<s>
In	O
addition	O
to	O
supporting	O
most	O
Icecast	B-Application
features	O
,	O
RSAS	O
provides	O
additional	O
functionality	O
such	O
as	O
HLS	B-Protocol
support	O
,	O
improved	O
AAC	B-Application
support	O
,	O
live	O
streaming	O
metadata	O
,	O
and	O
ad	O
insertion	O
.	O
</s>
<s>
on	O
a	O
server	B-Application
.	O
</s>
<s>
serve	O
regular	O
files	O
with	O
speeds	O
equivalent	O
to	O
nginx	B-Operating_System
on	O
Linux	B-Application
.	O
</s>
