HI Bogdan,
Thanks for the reply.
I was using 3.2.13, so I have now patched this to 3.2.15, which is the latest
version on the 3.2 branch. I repeated the test and got the same behaviour.
Please see the below information as requested...
Script...
if ( $si == '10.10.14.71' && is_method("INVITE") ) {
exec("/usr/local/bin/sbc-route", $tU, $var(out));
xlog("Value returned from Re-direct Script is
$var(out)");
$branch = $var(out);
xlog("Target is set as $branch");
send_reply(302, "Server Redirect");
exit;
}
Xlog information logged when the call request comes in...
2023-11-15T09:52:55.375039+00:00 uk-rdh-testast2 /usr/sbin/opensips[283656]:
Value returned from Re-direct Script is sip:[email protected]
2023-11-15T09:52:55.375456+00:00 uk-rdh-testast2 /usr/sbin/opensips[283656]:
Target is set as sip:[email protected]
The 302 response is below, exported from Wireshark...
No. Time Source Destination Protocol
Length Info
15 09:53:20.012882 10.10.12.70 10.10.14.71 SIP 666
Status: 302 Server Redirect |
Frame 15: 666 bytes on wire (5328 bits), 666 bytes captured (5328 bits)
Ethernet II, Src: bb:bb:bb:bb:bb:bb (bb:bb:bb:bb:bb:bb), Dst: aa:aa:aa:aa:aa:aa
(aa:aa:aa:aa:aa:aa)
Internet Protocol Version 4, Src: 10.10.12.70, Dst: 10.10.14.71
User Datagram Protocol, Src Port: 5070, Dst Port: 5060
Session Initiation Protocol (302)
Status-Line: SIP/2.0 302 Server Redirect
Message Header
From:
sip:[email protected];user=phone;tag=BN1699364674-1-1700041999-377836318
To:
sip:[email protected];user=phone;tag=5d8f.6023fbda08f41f7e9ebdc611f91805ef
Call-ID:
[email protected]<mailto:[email protected]>
[Generated Call-ID:
[email protected]<mailto:[email protected]>]
CSeq: 61414 INVITE
Via: SIP/2.0/UDP
10.10.14.71:5060;branch=z9hG4bK-6a03d713-a7b27-28f11294-7f0923fc1278
Via: SIP/2.0/UDP
149.x.xxx.xx:5060;received=151.x.xxx.x;rport=5060;branch=z9hG4bK1699364674
Via: SIP/2.0/UDP 151.x.xxx.x:5060;branch=z9hG4bK0aB2fefabe20ff62d0e
Contact: <sip:[email protected]
[Expert Info (Warning/Malformed): Header has no colon after the name]
[Header has no colon after the name]
[Severity level: Warning]
[Group: Malformed]
Server: OpenSIPS (3.2.15 (x86_64/linux))
Content-Length: 0
If it is any help, I did try another method of inputting the Contact header,
which was using the 'append_to_reply' command, rather than using the $branch
method, so I just formatted in the URI as such...
append_to_reply('Contact: <$var(out)>');
This pushed the closing > from the 'Contact' URI to the "Server" line, as you
can see on the outputted 302 below...
No. Time Source Destination Protocol
Length Info
17 12:12:01.339034 10.10.12.70 10.10.14.71 SIP
667 Status: 302 Server Redirect |
Frame 17: 667 bytes on wire (5336 bits), 667 bytes captured (5336 bits)
Ethernet II, Src: bb:bb:bb:bb:bb:bb (bb:bb:bb:bb:bb:bb), Dst: aa:aa:aa:aa:aa:aa
(aa:aa:aa:aa:aa:aa)
Internet Protocol Version 4, Src: 10.10.12.70, Dst: 10.10.14.71
User Datagram Protocol, Src Port: 5070, Dst Port: 5060
Session Initiation Protocol (302)
Status-Line: SIP/2.0 302 Server Redirect
Message Header
From:
sip:[email protected];user=phone;tag=BN1699364667-1-1699963921-901707368
To:
sip:[email protected];user=phone;tag=5d8f.a1daebfe0f15d4035f73e92edd390da9
Call-ID:
[email protected]<mailto:[email protected]>
[Generated Call-ID:
[email protected]<mailto:[email protected]>]
CSeq: 706035 INVITE
Via: SIP/2.0/UDP
10.10.14.71:5060;branch=z9hG4bK-34260abf-94a28-2449afc3-7f0920d0abc8
Via: SIP/2.0/UDP
149.x.xxx.xx:5060;received=151.x.xxx.x;rport=5060;branch=z9hG4bK1699364667
Via: SIP/2.0/UDP 151.x.xxx.x:5060;branch=z9hG4bK0aB220722fa7bfe603d
Contact: <sip:[email protected]:5060
>Server: OpenSIPS (3.2.13 (x86_64/linux))
[Expert Info (Note/Undecoded): Unrecognised SIP header (>server)]
[Unrecognised SIP header (>server)]
[Severity level: Note]
[Group: Undecoded]
Content-Length: 0
Whether this is related or not, I cannot say, but thought I would include it in
any case.
Many Thanks,
Ben
From: Bogdan-Andrei Iancu <[email protected]>
Sent: Wednesday, November 15, 2023 7:30 AM
To: OpenSIPS users mailling list <[email protected]>; Ben Bliss
<[email protected]>
Subject: Re: [OpenSIPS-Users] Odd URI formatting issue when using Exec to
return a variable
CAUTION: This email originated from outside your organization. Exercise caution
when opening attachments or clicking links, especially from unknown senders.
Hi Ben,
Could you post the xlog output and the resulting 302 ? Also be sure you are
using the latest 3.2 version - please post the `opensips -V` here.
Regards,
Bogdan-Andrei Iancu
OpenSIPS Founder and Developer
https://www.opensips-solutions.com<https://linkprotect.cudasvc.com/url?a=https%3a%2f%2fwww.opensips-solutions.com&c=E,1,n_ThlRNU3i-MoIo_dhzoLTuWEvWUOlYVNSDoisTDDrwzbpcftjAa4w_2PyxMOisnPvCBiGpAygCZjMhqUzFW_eo3M1DZs60QBAwbpZYM6fdEYEdZt7_0&typo=1>
https://www.siphub.com<https://linkprotect.cudasvc.com/url?a=https%3a%2f%2fwww.siphub.com&c=E,1,FaWC5zmYssK-iGLeBMdcpIfqOyqXzRepdKxkoIroZfSn0rDpGcOHq3E-rAA6pLhypuKjMgc8st1DlBDvpaiolXtmHYeW9PIxKMk9l27g6Jmoso3H5n9a6tC2bOqe&typo=1>
On 11/14/23 4:00 PM, Ben Bliss wrote:
I am using Opensips v.3.2 and I am attempting to replicate the 302 redirect
outlined on the blog
(https://blog.opensips.org/2018/07/05/handling-sip-redirect-requests-in-realtime/),
but am running into an odd issue.
I am using exec to execute an external program, which returns a URI as a
variable, which is then used to populate the $branch field, which is then
returned as the contact URI in the 302 response.
For reasons I cannot explain, even though the URI is correctly formatted in the
xlogs which I print off during the call request, when the 302 message is
received, the Contact URI is missing the end '>'character. This means the
server the 302 is being sent to doesn't ACK the message, as the contact URI is
invalid.
If I specify the URI directly within OpenSIPs, then the contact header is then
formatted correctly.
Initially I thought the issue was related to the script returning the variable
(bash script), so I swapped to a Golang program, essentially returning the same
URI, but the same behaviour occurs with this as well.
The script is setup as follows...
if ( $si == '10.10.14.71' && is_method("INVITE") ) {
exec("/usr/local/bin/sbc-route", $tU, $var(out));
xlog("Value returned from Re-direct Script is
$var(out)");
$branch = $var(out);
xlog("Target is set as $branch");
send_reply(302, "Server Redirect");
exit;
}
Can anyone offer any ideas as to why this may be occurring?
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