4 Jan
2008
4 Jan
'08
12:30 p.m.
I am using OpenSER to front some Cisco AS5300s. The way the trunk groups
on those are set up, a prefix of #755 is required to dial out, so I
transform the URI in OpenSER:
$rU = "#755" + $rU;
The problem is, certain messages never get acknowledged because OpenSER
reformats the URI to use escaped sequences. I am not sure if this is RFC
compliant.
For instance, a 200 OK comes from the media gateway, and the ACK that
OpenSER sends back has this for the URI scheme:
ACK sip:%237557069999999@ip.address:5060
This is in response to an initial INVITE to:
sip:#7557069999999@ip.address:5060
... what should I make of this?
Thanks!
--
Alex Balashov
Evariste Systems
Web : http://www.evaristesys.com/
Tel : +1-678-954-0670
Direct : +1-678-954-0671
4 Jan
4 Jan
1:24 p.m.
New subject: [OpenSER-Users] # characters in URIs getting reformatted.
Alex Balashov writes:
The problem is, certain messages never get
acknowledged because OpenSER
reformats the URI to use escaped sequences. I am not sure if this is RFC
compliant.
i don't remember that openser would automatically do any escaping. are
you sure about it?
-- juha
1:34 p.m.
On Friday 04 January 2008 13:24:31 Juha Heinanen wrote:
Alex Balashov writes:
OpenSer doesn't do escaping automatically, I've tested it now.
--
Iñaki Baz Castillo
ibc(a)in.ilimit.es
The problem is, certain messages never get
acknowledged because OpenSER
reformats the URI to use escaped sequences. I am not sure if this is
RFC compliant.
i don't remember that openser would automatically do any escaping. are
you sure about it?
1:37 p.m.
On Friday 04 January 2008 12:30:55 Alex Balashov wrote:
I am using OpenSER to front some Cisco AS5300s. The
way the trunk groups
on those are set up, a prefix of #755 is required to dial out, so I
transform the URI in OpenSER:
$rU = "#755" + $rU;
Is it legal "#" in a SIP URI???
In fact I don't allow it. I do this test in order to detect illegal
characteres:
if ( $ru != $(ru{s.escape.common}) || ($rU && $rU != $(rU{s.escape.user})) ) {
sl_send_reply("403", "Forbidden, illegal characters in RURI");
exit;
}
And when a # is present in the URI the condition is not matched so the message
is forbidden.
Anyway I've not verified if "#" is an illegal character according to some
RFC.
--
Iñaki Baz Castillo
ibc(a)in.ilimit.es
1:54 p.m.
Take a look at RFC-3261 starting about page 219. The hash mark / pound
sign (#) is no where to be found.
It appears that a percent sign (%) is used to escape hex digits.
Regards,
Norm
Iñaki Baz Castillo wrote:
On Friday 04 January 2008 12:30:55 Alex Balashov
wrote:
I am using OpenSER to front some Cisco AS5300s.
The way the trunk groups
on those are set up, a prefix of #755 is required to dial out, so I
transform the URI in OpenSER:
$rU = "#755" + $rU;
Is it legal "#" in a SIP URI???
In fact I don't allow it. I do this test in order to detect illegal
characteres:
if ( $ru != $(ru{s.escape.common}) || ($rU && $rU != $(rU{s.escape.user})) ) {
sl_send_reply("403", "Forbidden, illegal characters in RURI");
exit;
}
And when a # is present in the URI the condition is not matched so the message
is forbidden.
Anyway I've not verified if "#" is an illegal character according to some
RFC.
2:10 p.m.
On Friday 04 January 2008 13:54:41 Norman Brandinger wrote:
Take a look at RFC-3261 starting about page 219. The
hash mark / pound
sign (#) is no where to be found.
It says:
25.1 Basic Rules
...
Several rules are incorporated from RFC 2396 [5] but are updated to
make them compliant with RFC 2234
...
And RFC 2396 says:
2.4.3. Excluded US-ASCII Characters
...
The character "#" is excluded because it is used to delimit a URI from a
fragment identifier in URI references
...
So I assume that "#" is a illegal character in a SIP URI, am I wrong?
Regards.
--
Iñaki Baz Castillo
ibc(a)in.ilimit.es
5981
days inactive
5981
days old
5 comments
4 participants
participants (4)
-
Alex Balashov -
Iñaki Baz Castillo -
jh＠tutpro.com -
Norman Brandinger