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cpp-libs
libnice
Commits
50cf7c0d
Commit
50cf7c0d
authored
Jul 29, 2008
by
Youness Alaoui
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Cleaner way to handle inbound stun messages from the nice agent
parent
e06e3f77
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agent/agent.c
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agent/agent.c
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50cf7c0d
...
...
@@ -1263,31 +1263,19 @@ _nice_agent_recv (
return
0
;
}
/* step: check for a RTP fingerprint
*
* The top two bits of an RTP message are the version number; the current
* version number is 2. The top two bits of a STUN message are always 0.
*
* - XXX: should use a two-phase check, first a lightweight check,
* and then full validation */
if
((
buf
[
0
]
&
0xc0
)
==
0x80
)
{
/* looks like RTP */
return
len
;
}
/* step: validate using the new STUN API */
/* - note: old check '((buf[0] & 0xc0) == 0)' */
else
if
(
stun_message_validate_buffer_length
((
uint8_t
*
)
buf
,
(
size_t
)
len
)
==
len
)
{
/* If the retval is no 0, its not a valid stun packet, probably data */
conn_check_handle_inbound_stun
(
agent
,
stream
,
component
,
udp_socket
,
&
from
,
buf
,
len
);
}
else
{
/* not RTP nor STUN, pass to client */
if
(
stun_message_validate_buffer_length
((
uint8_t
*
)
buf
,
(
size_t
)
len
)
==
len
)
{
/* If the retval is no 0, its not a valid stun packet, probably data */
if
(
conn_check_handle_inbound_stun
(
agent
,
stream
,
component
,
udp_socket
,
&
from
,
buf
,
len
)
==
FALSE
)
{
/* unhandled STUN, pass to client */
return
len
;
}
}
else
{
/* not STUN, pass to client */
return
len
;
}
/* handled STUN message*/
return
0
;
}
...
...
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