[SR-Users] kamailio 4.4.4 fills IPv6 contact address when sending packet over IPv4
Pali Rohár
pali.rohar at gmail.com
Fri Jul 19 10:19:29 CEST 2019
Ok, I will try a new version (but I dislike using non-system versions of
software) and will let know if something was changed.
On Friday 19 July 2019 07:58:32 Henning Westerholt wrote:
> Hello Pali,
>
> this is hard to say without more details. Unfortunately Kamailio 4.4 is
> already end of life. I would suggest that you try your cfg with a newer
> 5.2 version (you can find debian and other OS repositories with updated
> packages on www.kamailio.org).
>
> Cheers,
>
> Henning
>
> Am 18.07.19 um 10:57 schrieb Pali Rohár:
> > So what affects content of the Contact header in NOTIFY packets? Is
> > there any special option for it? And why is NOTIFY packets handled
> > differently as other packets?
> >
> > On Friday 12 July 2019 10:00:57 Pali Rohár wrote:
> >> My SIP client (really desktop linphone) sets IPv4 Contact address of my
> >> internet connection. I looked at it.
> >>
> >> And those packets are between my SIP server and remote sip.linphone.org
> >> server. I have nothing with sip.linphone.org server. Really kamailio 4.4
> >> sets IPv6 Contact address in that header for outgoing NOTIFY packets.
> >> And it does *not* happen for INVITE or MESSAGE packets. Only for NOTIFY.
> >>
> >> I really do not know why, therefore I'm asking.
> >>
> >> On Thursday 11 July 2019 23:46:40 Brandon Armstead wrote:
> >>> Are you sure Linphone is not setting it? Get a trace from client side, for
> >>> some reason I’ve my doubts kamailio is defaulting to an ipv6 address.
> >>>
> >>> On Thu, Jul 11, 2019 at 11:42 PM Pali Rohár <pali.rohar at gmail.com> wrote:
> >>>
> >>>> Hi!
> >>>>
> >>>> I have not set pua_reginfo parameter. Should I set it? And if yes to
> >>>> which value? There should be at least settings for packets outgoing via
> >>>> IPv4 and another setting for packets outgoing via IPv6.
> >>>>
> >>>> On Thursday 11 July 2019 06:46:35 YASIN CANER wrote:
> >>>>> Hello,
> >>>>>
> >>>>> did you try to set parameter server address?
> >>>>>
> >>>> http://kamailio.org/docs/modules/5.2.x/modules/pua_reginfo.html#idm1031504764
> >>>>> pua_reginfo Module - kamailio.org<
> >>>> http://kamailio.org/docs/modules/5.2.x/modules/pua_reginfo.html#idm1031504764
> >>>>> Keeping different Servers in Sync regarding the location database Get
> >>>> notified, when a user registers: A presence-server, which handles offline
> >>>> message storage for an account, would get notified, when the user comes
> >>>> online.
> >>>>> kamailio.org
> >>>>>
> >>>>>
> >>>>> Yasin CANER
> >>>>>
> >>>>> ________________________________
> >>>>> From: sr-users <sr-users-bounces at lists.kamailio.org> on behalf of Pali
> >>>> Rohár <pali.rohar at gmail.com>
> >>>>> Sent: Wednesday, July 10, 2019 9:29 PM
> >>>>> To: sr-users at lists.kamailio.org
> >>>>> Subject: Re: [SR-Users] kamailio 4.4.4 fills IPv6 contact address when
> >>>> sending packet over IPv4
> >>>>> Hi! Do you have any idea why Kamailio fills incorrect address into
> >>>>> Contact header? And how to avoid it?
> >>>>>
> >>>>> On Sunday 30 June 2019 23:11:22 Pali Rohár wrote:
> >>>>>> Hi!
> >>>>>>
> >>>>>> I detected strange problem that sip.linphone.org refuse to accept
> >>>>>> presence information re-transmitted by kamailio 4.4.4 server.
> >>>>>>
> >>>>>> I debug this problem with tcpdump and I found out that problem is in
> >>>>>> kamailio which fills IPv6 address into UDP datagram and that datagram
> >>>> is
> >>>>>> sent via IPv4 socket to IPv4 address, to sip.linphone.org server. And
> >>>>>> sip.linphone.org server does not have IPv6 connectivity, so correctly
> >>>>>> return over IPv4 to sender just "400 Bad Contact Header" error.
> >>>>>>
> >>>>>> On my server is running kamailio 4.4.4 from Debian Stretch and I can
> >>>>>> 100% reproduce this problem against public sip.linphone.org server.
> >>>>>>
> >>>>>> My server has both IPv4 and IPv6 connectivity and kamailio is listening
> >>>>>> for both IPv4 and IPv6 connections.
> >>>>>>
> >>>>>> So why is kamailio sending IPv6 address over IPv4 and therefore makes
> >>>> it
> >>>>>> impossible to communicate with non-IPv6 enabled servers? Looks like a
> >>>>>> problem with choosing default/correct socket for Contact header.
> >>>>>>
> >>>>>> And how to fix this problem? Can you help me? I would like to have
> >>>>>> working interconnection with linphone servers.
> >>>>>>
> >>>>>> Just to note I'm seeing this problem only for presence information
> >>>>>> packets. Other requests, like INVITE or MESSAGE seems to work.
> >>>>>>
> >>>>>> Below is relevant tcpdump output. Some parts were replaced by {VAR}.
> >>>>>>
> >>>>>> PS: I'm not subscribed to list, so please CC my address when sending
> >>>>>> reply. Thank you!
> >>>>>>
> >>>>>>
> >>>>>> 17:22:58.121719 IP (tos 0x10, ttl 64, id 21629, offset 0, flags
> >>>> [none], proto UDP (17), length 1266)
> >>>>>> {MY_IPV4_ADDRESS}.5060 > 91.121.209.194.5060: [bad udp cksum
> >>>> 0xa099 -> 0x9825!] SIP, length: 1238
> >>>>>> NOTIFY sip:{REMOTE_NAME}@{REMOTE_USER_IPV4_ADDRESS}:5060;registering_acc=sip_linphone_org
> >>>> SIP/2.0
> >>>>>> Via: SIP/2.0/UDP
> >>>> {MY_IPV4_ADDRESS};branch=z9hG4bK2b55.88f93c20000000000000000000000000.0
> >>>>>> To: <sip:{REMOTE_NAME}@sip.linphone.org>;tag=75559182
> >>>>>> From:
> >>>> <sip:{MY_SIP_URI}>;tag=97d8e785fdf42bf9622a64c13c504961-2708
> >>>>>> CSeq: 2 NOTIFY
> >>>>>> Call-ID: 26cf9d5c019af2dc3302b770887bcc2e at 0:0:0:0:0:0:0:0
> >>>>>> Route: <sip:91.121.209.194:5060;lr>
> >>>>>> Content-Length: 597
> >>>>>> User-Agent: kamailio (4.4.4 (x86_64/linux))
> >>>>>> Max-Forwards: 70
> >>>>>> Event: presence
> >>>>>> Contact: <sip:{MY_IPV6_ADDRESS}:5060;transport=udp>
> >>>>>> Subscription-State: active;expires=3600
> >>>>>> Content-Type: application/pidf+xml
> >>>>>>
> >>>>>> <?xml version="1.0" encoding="UTF-8"?>
> >>>>>> <presence xmlns="urn:ietf:params:xml:ns:pidf"
> >>>> xmlns:dm="urn:ietf:params:xml:ns:pidf:data-model"
> >>>> xmlns:rpid="urn:ietf:params:xml:ns:pidf:rpid" entity="Pali
> >>>> <sip:{MY_SIP_URI}>">
> >>>>>> <tuple id="sg89ae">
> >>>>>> <status><basic>open</basic></status>
> >>>>>> <contact priority="0.8">Pali <sip:{MY_SIP_URI}></contact>
> >>>>>> </tuple>
> >>>>>>
> >>>>>> <tuple xmlns="urn:ietf:params:xml:ns:pidf" id="TA0C538B2">
> >>>>>> <status>
> >>>>>> <basic>closed</basic>
> >>>>>> </status>
> >>>>>> <contact priority="1">sip:{MY_SIP_URI}</contact>
> >>>>>> <timestamp>2019-04-19T17:20:36+02:00</timestamp>
> >>>>>> </tuple>
> >>>>>> </presence>
> >>>>>>
> >>>>>> 17:22:58.151188 IP (tos 0x0, ttl 52, id 22949, offset 0, flags [none],
> >>>> proto UDP (17), length 373)
> >>>>>> 91.121.209.194.5060 > {MY_IPV4_ADDRESS}.5060: [udp sum ok] SIP,
> >>>> length: 345
> >>>>>> SIP/2.0 400 Bad Contact Header
> >>>>>> Via: SIP/2.0/UDP
> >>>> {MY_IPV4_ADDRESS};branch=z9hG4bK2b55.88f93c20000000000000000000000000.0;rport=5060
> >>>>>> From:
> >>>> <sip:{MY_SIP_URI}>;tag=97d8e785fdf42bf9622a64c13c504961-2708
> >>>>>> To: <sip:{REMOTE_NAME}@sip.linphone.org>;tag=75559182
> >>>>>> Call-ID: 26cf9d5c019af2dc3302b770887bcc2e at 0:0:0:0:0:0:0:0
> >>>>>> CSeq: 2 NOTIFY
> >>>>>> Content-Length: 0
> >>>>>>
> >>>>>>
> >>>> --
> >>>> Pali Rohár
> >>>> pali.rohar at gmail.com
> >>>>
> >>>> _______________________________________________
> >>>> Kamailio (SER) - Users Mailing List
> >>>> sr-users at lists.kamailio.org
> >>>> https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users
> >>>>
--
Pali Rohár
pali.rohar at gmail.com
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