<s>
The	O
Secure	O
Real-Time	B-Application
Media	I-Application
Flow	I-Application
Protocol	I-Application
(	O
RTMFP	B-Application
)	O
is	O
a	O
protocol	B-Protocol
suite	I-Protocol
developed	O
by	O
Adobe	O
Systems	O
for	O
encrypted	O
,	O
efficient	O
multimedia	O
delivery	O
through	O
both	O
client-server	B-Operating_System
and	O
peer-to-peer	O
models	O
over	O
the	O
Internet	O
.	O
</s>
<s>
RTMFP	B-Application
allows	O
users	O
of	O
live	O
,	O
real‐time	O
communications	O
,	O
such	O
as	O
social	O
networking	O
services	O
and	O
multi‐user	O
games	O
,	O
to	O
communicate	O
directly	O
with	O
each	O
other	O
using	O
their	O
computer	O
's	O
microphone	O
and	O
webcam	O
.	O
</s>
<s>
RTMFP	B-Application
is	O
a	O
peer-to-peer	O
system	O
,	O
but	O
is	O
only	O
designed	O
for	O
direct	O
end	O
user	O
to	O
end	O
user	O
communication	O
for	O
real-time	O
communication	O
,	O
not	O
for	O
file	O
sharing	O
between	O
multiple	O
peers	O
using	O
segmented	O
downloading	O
.	O
</s>
<s>
RTMFP	B-Application
enables	O
direct	O
,	O
live	O
,	O
real‐time	O
communication	O
for	O
applications	O
such	O
as	O
audio	O
and	O
video	B-Application
chat	I-Application
and	O
multi‐player	O
games	O
.	O
</s>
<s>
RTMFP	B-Application
uses	O
the	O
User	B-Protocol
Datagram	I-Protocol
Protocol	I-Protocol
,	O
(	O
UDP	O
)	O
to	O
send	O
video	O
and	O
audio	O
data	O
over	O
the	O
Internet	O
,	O
so	O
needs	O
to	O
handle	O
missing	O
,	O
dropped	O
,	O
or	O
out	O
of	O
order	O
packets	O
.	O
</s>
<s>
RTMFP	B-Application
has	O
two	O
features	O
that	O
may	O
help	O
to	O
mitigate	O
the	O
effects	O
of	O
connection	O
errors	O
.	O
</s>
<s>
For	O
example	O
,	O
when	O
a	O
wireless	B-General_Concept
network	I-General_Concept
connection	O
experiences	O
a	O
dropout	O
.	O
</s>
<s>
IP	O
Mobility	O
:	O
Active	O
network	O
peer	O
sessions	O
are	O
maintained	O
even	O
if	O
a	O
client	O
changes	O
to	O
a	O
new	O
IP	B-Protocol
address	I-Protocol
.	O
</s>
<s>
For	O
example	O
,	O
when	O
a	O
laptop	O
on	O
a	O
wireless	B-General_Concept
network	I-General_Concept
is	O
plugged	O
into	O
a	O
wired	O
connection	O
and	O
receives	O
a	O
new	O
address	O
.	O
</s>
<s>
User	B-Protocol
Datagram	I-Protocol
Protocol	I-Protocol
(	O
UDP	O
)	O
,	O
whereas	O
Real-Time	B-Operating_System
Messaging	I-Operating_System
Protocol	I-Operating_System
(	O
RTMP	O
)	O
is	O
based	O
on	O
Transmission	B-Protocol
Control	I-Protocol
Protocol	I-Protocol
(	O
TCP	O
)	O
.	O
</s>
<s>
Unlike	O
RTMP	O
,	O
RTMFP	B-Application
also	O
supports	O
sending	O
data	O
directly	O
from	O
one	O
Adobe	B-Operating_System
Flash	I-Operating_System
Player	I-Operating_System
to	O
another	O
,	O
</s>
<s>
The	O
user	O
of	O
a	O
Flash	B-Operating_System
Media	I-Operating_System
Server	I-Operating_System
will	O
also	O
be	O
required	O
to	O
authorize	O
network	O
address	O
lookup	O
and	O
NAT	B-Protocol
traversal	I-Protocol
services	O
for	O
the	O
clients	O
to	O
prevent	O
Flash	B-Operating_System
Player	I-Operating_System
from	O
being	O
used	O
in	O
an	O
unmanaged	O
way	O
.	O
</s>
<s>
Flash	B-Operating_System
Player	I-Operating_System
10.0	O
allowed	O
only	O
one-to-one	O
communication	O
for	O
P2P	O
,	O
but	O
from	O
10.1	O
application-level	O
multicast	O
is	O
allowed	O
.	O
</s>
<s>
Flash	B-Operating_System
Player	I-Operating_System
finds	O
appropriate	O
distribution	O
route	O
(	O
overlay	B-Architecture
network	I-Architecture
)	O
,	O
and	O
can	O
distribute	O
to	O
the	O
group	O
,	O
which	O
is	O
connected	O
by	O
P2P	O
.	O
</s>
<s>
RTMFP	B-Application
's	O
underlying	O
protocols	O
are	O
the	O
result	O
of	O
Adobe	O
's	O
acquisition	O
of	O
Amicima	O
in	O
2006	O
;	O
strong	O
architectural	O
similarities	O
exist	O
between	O
RTMFP	B-Application
and	O
Amicima	O
's	O
GPL-licensed	O
Secure	O
Media	O
Flow	O
Protocol	O
(	O
MFP	O
)	O
.	O
</s>
