From donat.zenichev@gmail.com Mon Nov 13 16:05:45 2017
From: Donat Zenichev <donat.zenichev@gmail.com>
To: sr-users@lists.kamailio.org
Subject: [SR-Users] parse_from_header(): bad From header
Date: Mon, 13 Nov 2017 17:05:36 +0200
Message-ID:
 <CANLwQCk49wRP8zcbN-zV3RPgfe0=gAf3Ejn6bwnhMtPY9vPV2w@mail.gmail.com>
MIME-Version: 1.0
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Hi community.
We experience the problem with malformed messages.

First of all, I want to say, that most of time kamailio works well and
nothing happens that can drop sessions.
But from time-to-time something changes (may be in the network) and
kamailio receives requests with malformed headers (To or From hfs).

The schema:
uplinks -> kamailio <-> routing server (asterisk)

Malformed messages were received only from asterisk server.
Sip debug on asterisk showed that messages were transmitted correctly and
headers were nice.
But kamailio obtains changed (broken) packets or perhaps can't read them
properly.

How does it look like:
Nov 10 12:37:06 kamailio-name kamailio[965]: INFO: <script>: Going to
NATMANAGE for BYE from sip:useragent7122(a)kamailio_address:5068
(IP=3Dwss:client_address:62881) - R=3Dsip:dialed_did_service(a)asterisk_addre=
ss:50600
ID=3D1b0044070de406153bf0e4b84d6bb793(a)asterisk_address:50600
Nov 10 12:37:06 kamailio-name kamailio[965]: NOTICE: <script>: Relaying
request to <null> - R=3Dsip:dialed_did_service(a)asterisk_address:50600
ID=3D1b0044070de406153bf0e4b84d6bb793(a)asterisk_address:50600
Nov 10 12:37:06 kamailio-name kamailio[965]: ERROR: <core>
[parser/parse_addr_spec.c:719]: parse_addr_spec(): unexpected char [<] in
status 6: [<sip:useragent6] .
Nov 10 12:37:06 kamailio-name kamailio[965]: ERROR: <core>
[parser/parse_from.c:75]: parse_from_header(): bad From header
[<sip:useragent6<+.w>;tag=3Djja7l45gd1]
Nov 10 12:37:06 kamailio-name kamailio[965]: ERROR: dialog [dlg_cseq.c:89]:
dlg_cseq_prepare_msg(): cannot parse FROM header
Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: <core>
[parser/parse_addr_spec.c:719]: parse_addr_spec(): unexpected char [<] in
status 6: [<sip:useragent6] .
Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: <core>
[parser/parse_from.c:75]: parse_from_header(): bad From header
[<sip:useragent6<+.w>;tag=3Djja7l45gd1]
Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: dialog [dlg_cseq.c:89]:
dlg_cseq_prepare_msg(): cannot parse FROM header
Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: <core>
[parser/parse_addr_spec.c:719]: parse_addr_spec(): unexpected char [<] in
status 6: [<sip:useragent6] .
Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: <core>
[parser/parse_from.c:75]: parse_from_header(): bad From header
[<sip:useragent6<+.w>;tag=3Djja7l45gd1]
Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: uac [replace.c:783]:
restore_uris_reply(): failed to find/parse FROM hdr
Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: <core>
[parser/parse_addr_spec.c:719]: parse_addr_spec(): unexpected char [<] in
status 6: [<sip:useragent6] .
Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: <core>
[parser/parse_from.c:75]: parse_from_header(): bad From header
[<sip:useragent6<+.w>;tag=3Djja7l45gd1]
Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: pv [pv_core.c:465]:
pv_get_from_attr(): cannot parse From header
Nov 10 12:37:06 kamailio-name kamailio[937]: INFO: <script>: Skip manage
DEVICE_STATE for BYE from <null> (IP=3Dudp:asterisk_address:50600) with (200
- OK) - R=3D<null> ID=3D1b0044070de406153bf0e4b84d6bb793(a)asterisk_address:5=
0600
Nov 10 12:37:06 kamailio-name kamailio[937]: INFO: <script>:
------------------------------------MANAGE BYE by DEVICE_STATE_BYE_MANAGE
route - 200 - OK M=3DBYE IP=3Dudp:asterisk_address:50600
ID=3D1b0044070de406153bf0e4b84d6bb793(a)asterisk_address:50600
Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: <core>
[parser/parse_addr_spec.c:719]: parse_addr_spec(): unexpected char [<] in
status 6: [<sip:useragent6] .
Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: <core>
[parser/parse_from.c:75]: parse_from_header(): bad From header
[<sip:useragent6<+.w>;tag=3Djja7l45gd1]
Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: pv [pv_core.c:465]:
pv_get_from_attr(): cannot parse From header
Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: <core>
[parser/parse_addr_spec.c:719]: parse_addr_spec(): unexpected char [<] in
status 6: [<sip:useragent6] .
Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: <core>
[parser/parse_from.c:75]: parse_from_header(): bad From header
[<sip:useragent6<+.w>;tag=3Djja7l45gd1]
Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: rtpengine
[rtpengine_funcs.c:331]: get_from_tag(): failed to parse From header
Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: rtpengine
[rtpengine.c:2252]: rtpp_function_call(): can't get From tag
Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: <core>
[parser/parse_addr_spec.c:719]: parse_addr_spec(): unexpected char [<] in
status 6: [<sip:useragent6] .
Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: <core>
[parser/parse_from.c:75]: parse_from_header(): bad From header
[<sip:useragent6<+.w>;tag=3Djja7l45gd1]
Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: pv [pv_core.c:465]:
pv_get_from_attr(): cannot parse From header
Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: <core>
[parser/parse_addr_spec.c:719]: parse_addr_spec(): unexpected char [<] in
status 6: [<sip:useragent6] .
Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: <core>
[parser/parse_from.c:75]: parse_from_header(): bad From header
[<sip:useragent6<+.w>;tag=3Djja7l45gd1]
Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: pv [pv_core.c:465]:
pv_get_from_attr(): cannot parse From header

How the packet looks like:
ACK sip:tt7etmau(a)bb0pd5t63b26.invalid;alias=3Dclient_address~57573~6;transp=
ort=3Dws
SIP/2.0
Via: SIP/2.0/UDP asterisk_address:50600;branch=3Dz9hG4bK117106ca;rport
Route: <sip:kam2.domain.com:5068
;nat=3Dyes;transport=3Dudp;r2=3Don;ftag=3Das06869a5d;lr=3Don;vsf=3DAAAAAEZZSV=
VDVV1VRBlUUkUpFQxdVUZYXiRCHU1RQl1HRVNaXhhAQ3RuLnR3aWxpby5jb20-;vst=3DAAAAAAAA=
AAAAAAAAAAAAAAAfBwQRQE8NBR9BChIFAwddCgADFEVDQlYudHdpbGlvLmNvbQ--;did=3Db0c.73=
31>,<sip:kam2.callision.com:5068
;nat=3Dyes;transport=3Dws;r2=3Don;ftag=3Das06869a5d;lr=3Don;vsf=3DAAAAAEZZSVV=
DVV1VRBlUUkUpFQxdVUZYXiRCHU1RQl1HRVNaXhhAQ3RuLnR3aWxpby5jb20-;vst=3DAAAAAAAAA=
AAAAAAAAAAAAAAfBwQRQE8NBR9BChIFAwddCgADFEVDQlYudHdpbGlvLmNvbQ--;did=3Db0c.733=
1>
Max-Forwards: 70
From: "19172423539" <sip:19172423539(a)asterisk_address:50600>;tag=3Das06869a=
5d
To: <sip:useragent7122(a)10.0.1.18:5068>;tag=3Dnmv7kmpau3
Contact: <sip:19172423539(a)asterisk_address:50600>
Call-ID: 629d5a132c194c536b5f5c1a2a3c6e32(a)asterisk_address:50600
CSeq: 102 ACK
User-Agent: asterisk PBX
Content-Length: 0


The transport is used to send messages between asterisk and kamailio is TCP.
TCP configurations:
tcp_connection_lifetime=3D3604
tcp_accept_no_cl=3Dyes
tcp_connect_timeout=3D5
tcp_send_timeout=3D5
tcp_rd_buf_size=3D16384
tcp_keepalive=3Dyes
tcp_crlf_ping=3Dyes
tcp_keepcnt=3D3
tcp_keepidle=3D30
tcp_keepintvl=3D15
tcp_max_connections=3D4096

I found the idea, that we need to change following parameters:
modparam("uac","restore_mode","auto")
modparam("uac","restore_dlg",1)

to:
modparam("uac","restore_mode","none")
modparam("uac","restore_dlg",0)

I did that, now it looks like all is fine, but I think it can get back.
Thanks in advance.



--=20
--=20
BR, Donat Zenichev
Wnet VoIP team
Tel Ukraine:  +380(44) 5-900-800
Tel USA: +164(67) 8-174-17
https://w-net.us/ <http://wnet.ua>



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From juliabo@gmail.com Tue Nov 14 07:52:49 2017
From: Julia Boudniatsky <juliabo@gmail.com>
To: sr-users@lists.kamailio.org
Subject: Re: [SR-Users] parse_from_header(): bad From header
Date: Tue, 14 Nov 2017 08:52:40 +0200
Message-ID:
 <CAASaakbdT1t_+8N8LL2tvLbsQZsSO30oZBYuSDPuGN-oywRTbw@mail.gmail.com>
In-Reply-To:
 <CANLwQCk49wRP8zcbN-zV3RPgfe0=gAf3Ejn6bwnhMtPY9vPV2w@mail.gmail.com>
MIME-Version: 1.0
Content-Type: multipart/mixed; boundary="===============1367117166=="

--===============1367117166==
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Content-Transfer-Encoding: quoted-printable

Hello,

It looks like headers "From" in initial INVITE and received message are
different.
For example:
 in INVITE : <sip:useragent7122(a)kamailio_address:5068>
 in received message
When you use header "From" transformation ( Route with vsf), restore may be
correct only for exactly the same header "From" format.
For example
Check may be port number is missing/added in "From" received message.


On Mon, Nov 13, 2017 at 5:05 PM, Donat Zenichev <donat.zenichev(a)gmail.com>
wrote:

> Hi community.
> We experience the problem with malformed messages.
>
> First of all, I want to say, that most of time kamailio works well and
> nothing happens that can drop sessions.
> But from time-to-time something changes (may be in the network) and
> kamailio receives requests with malformed headers (To or From hfs).
>
> The schema:
> uplinks -> kamailio <-> routing server (asterisk)
>
> Malformed messages were received only from asterisk server.
> Sip debug on asterisk showed that messages were transmitted correctly and
> headers were nice.
> But kamailio obtains changed (broken) packets or perhaps can't read them
> properly.
>
> How does it look like:
> Nov 10 12:37:06 kamailio-name kamailio[965]: INFO: <script>: Going to
> NATMANAGE for BYE from sip:useragent7122(a)kamailio_address:5068
> (IP=3Dwss:client_address:62881) - R=3Dsip:dialed_did_service(a)asterisk_add=
ress:50600
> ID=3D1b0044070de406153bf0e4b84d6bb793(a)asterisk_address:50600
> Nov 10 12:37:06 kamailio-name kamailio[965]: NOTICE: <script>: Relaying
> request to <null> - R=3Dsip:dialed_did_service(a)asterisk_address:50600 ID=
=3D
> 1b0044070de406153bf0e4b84d6bb793(a)asterisk_address:50600
> Nov 10 12:37:06 kamailio-name kamailio[965]: ERROR: <core>
> [parser/parse_addr_spec.c:719]: parse_addr_spec(): unexpected char [<] in
> status 6: [<sip:useragent6] .
> Nov 10 12:37:06 kamailio-name kamailio[965]: ERROR: <core>
> [parser/parse_from.c:75]: parse_from_header(): bad From header
> [<sip:useragent6<+.w>;tag=3Djja7l45gd1]
> Nov 10 12:37:06 kamailio-name kamailio[965]: ERROR: dialog
> [dlg_cseq.c:89]: dlg_cseq_prepare_msg(): cannot parse FROM header
> Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: <core>
> [parser/parse_addr_spec.c:719]: parse_addr_spec(): unexpected char [<] in
> status 6: [<sip:useragent6] .
> Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: <core>
> [parser/parse_from.c:75]: parse_from_header(): bad From header
> [<sip:useragent6<+.w>;tag=3Djja7l45gd1]
> Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: dialog
> [dlg_cseq.c:89]: dlg_cseq_prepare_msg(): cannot parse FROM header
> Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: <core>
> [parser/parse_addr_spec.c:719]: parse_addr_spec(): unexpected char [<] in
> status 6: [<sip:useragent6] .
> Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: <core>
> [parser/parse_from.c:75]: parse_from_header(): bad From header
> [<sip:useragent6<+.w>;tag=3Djja7l45gd1]
> Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: uac [replace.c:783]:
> restore_uris_reply(): failed to find/parse FROM hdr
> Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: <core>
> [parser/parse_addr_spec.c:719]: parse_addr_spec(): unexpected char [<] in
> status 6: [<sip:useragent6] .
> Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: <core>
> [parser/parse_from.c:75]: parse_from_header(): bad From header
> [<sip:useragent6<+.w>;tag=3Djja7l45gd1]
> Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: pv [pv_core.c:465]:
> pv_get_from_attr(): cannot parse From header
> Nov 10 12:37:06 kamailio-name kamailio[937]: INFO: <script>: Skip manage
> DEVICE_STATE for BYE from <null> (IP=3Dudp:asterisk_address:50600) with
> (200 - OK) - R=3D<null> ID=3D1b0044070de406153bf0e4b84d6bb793(a)asterisk_ad=
dress
> :50600
> Nov 10 12:37:06 kamailio-name kamailio[937]: INFO: <script>:
> ------------------------------------MANAGE BYE by DEVICE_STATE_BYE_MANAGE
> route - 200 - OK M=3DBYE IP=3Dudp:asterisk_address:50600 ID=3D
> 1b0044070de406153bf0e4b84d6bb793(a)asterisk_address:50600
> Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: <core>
> [parser/parse_addr_spec.c:719]: parse_addr_spec(): unexpected char [<] in
> status 6: [<sip:useragent6] .
> Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: <core>
> [parser/parse_from.c:75]: parse_from_header(): bad From header
> [<sip:useragent6<+.w>;tag=3Djja7l45gd1]
> Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: pv [pv_core.c:465]:
> pv_get_from_attr(): cannot parse From header
> Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: <core>
> [parser/parse_addr_spec.c:719]: parse_addr_spec(): unexpected char [<] in
> status 6: [<sip:useragent6] .
> Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: <core>
> [parser/parse_from.c:75]: parse_from_header(): bad From header
> [<sip:useragent6<+.w>;tag=3Djja7l45gd1]
> Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: rtpengine
> [rtpengine_funcs.c:331]: get_from_tag(): failed to parse From header
> Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: rtpengine
> [rtpengine.c:2252]: rtpp_function_call(): can't get From tag
> Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: <core>
> [parser/parse_addr_spec.c:719]: parse_addr_spec(): unexpected char [<] in
> status 6: [<sip:useragent6] .
> Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: <core>
> [parser/parse_from.c:75]: parse_from_header(): bad From header
> [<sip:useragent6<+.w>;tag=3Djja7l45gd1]
> Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: pv [pv_core.c:465]:
> pv_get_from_attr(): cannot parse From header
> Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: <core>
> [parser/parse_addr_spec.c:719]: parse_addr_spec(): unexpected char [<] in
> status 6: [<sip:useragent6] .
> Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: <core>
> [parser/parse_from.c:75]: parse_from_header(): bad From header
> [<sip:useragent6<+.w>;tag=3Djja7l45gd1]
> Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: pv [pv_core.c:465]:
> pv_get_from_attr(): cannot parse From header
>
> How the packet looks like:
> ACK sip:tt7etmau(a)bb0pd5t63b26.invalid;alias=3Dclient_address~57573~6;tran=
sport=3Dws
> SIP/2.0
> Via: SIP/2.0/UDP asterisk_address:50600;branch=3Dz9hG4bK117106ca;rport
> Route: <sip:kam2.domain.com:5068;nat=3Dyes;transport=3Dudp;r2=3Don;ftag=3D
> as06869a5d;lr=3Don;vsf=3DAAAAAEZZSVVDVV1VRBlUUkUpFQxdVU
> ZYXiRCHU1RQl1HRVNaXhhAQ3RuLnR3aWxpby5jb20-;vst=3D
> AAAAAAAAAAAAAAAAAAAAAAAfBwQRQE8NBR9BChIFAwddCgADFEVDQlYudHdp
> bGlvLmNvbQ--;did=3Db0c.7331>,<sip:kam2.callision.com:5068;
> nat=3Dyes;transport=3Dws;r2=3Don;ftag=3Das06869a5d;lr=3Don;vsf=3D
> AAAAAEZZSVVDVV1VRBlUUkUpFQxdVUZYXiRCHU1RQl1HRVNaXhhAQ3RuLnR3
> aWxpby5jb20-;vst=3DAAAAAAAAAAAAAAAAAAAAAAAfBwQRQE
> 8NBR9BChIFAwddCgADFEVDQlYudHdpbGlvLmNvbQ--;did=3Db0c.7331>
> Max-Forwards: 70
> From: "19172423539 <(917)%20242-3539>" <sip:19172423539 <(917)%20242-3539>
> @asterisk_address:50600>;tag=3Das06869a5d
> To: <sip:useragent7122(a)10.0.1.18:5068>;tag=3Dnmv7kmpau3
> Contact: <sip:19172423539 <(917)%20242-3539>@asterisk_address:50600>
> Call-ID: 629d5a132c194c536b5f5c1a2a3c6e32(a)asterisk_address:50600
> CSeq: 102 ACK
> User-Agent: asterisk PBX
> Content-Length: 0
>
>
> The transport is used to send messages between asterisk and kamailio is
> TCP.
> TCP configurations:
> tcp_connection_lifetime=3D3604
> tcp_accept_no_cl=3Dyes
> tcp_connect_timeout=3D5
> tcp_send_timeout=3D5
> tcp_rd_buf_size=3D16384
> tcp_keepalive=3Dyes
> tcp_crlf_ping=3Dyes
> tcp_keepcnt=3D3
> tcp_keepidle=3D30
> tcp_keepintvl=3D15
> tcp_max_connections=3D4096
>
> I found the idea, that we need to change following parameters:
> modparam("uac","restore_mode","auto")
> modparam("uac","restore_dlg",1)
>
> to:
> modparam("uac","restore_mode","none")
> modparam("uac","restore_dlg",0)
>
> I did that, now it looks like all is fine, but I think it can get back.
> Thanks in advance.
>
>
>
> --
> --
> BR, Donat Zenichev
> Wnet VoIP team
> Tel Ukraine:  +380(44) 5-900-800
> Tel USA: +164(67) 8-174-17
> https://w-net.us/ <http://wnet.ua>
>
> _______________________________________________
> Kamailio (SER) - Users Mailing List
> sr-users(a)lists.kamailio.org
> https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users
>
>



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--===============1367117166==--


From juliabo@gmail.com Tue Nov 14 08:04:31 2017
From: Julia Boudniatsky <juliabo@gmail.com>
To: sr-users@lists.kamailio.org
Subject: Re: [SR-Users] parse_from_header(): bad From header
Date: Tue, 14 Nov 2017 09:04:07 +0200
Message-ID:
 <CAASaakZ=UM-12QCU6Ygm5BwHgM0Jo39zhp1Kk4M7PNuS3W+NYg@mail.gmail.com>
In-Reply-To:
 <CANLwQCk49wRP8zcbN-zV3RPgfe0=gAf3Ejn6bwnhMtPY9vPV2w@mail.gmail.com>
MIME-Version: 1.0
Content-Type: multipart/mixed; boundary="===============1643988195=="

--===============1643988195==
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: quoted-printable

Hello,

It looks like headers "From" in initial INVITE and received message are
different.

For example:
 in INVITE : <sip:useragent7122(a)kamailio_address:5068>
 in received message : <sip:useragent7122(a)kamailio_address>

When you use header "From" transformation (I see Route with vsf), restore
may be correct only for exactly the same header "From".
Check may be port number is missing/added in  received message header
"From".

Best regards,
Julia

On Mon, Nov 13, 2017 at 5:05 PM, Donat Zenichev <donat.zenichev(a)gmail.com>
wrote:

> Hi community.
> We experience the problem with malformed messages.
>
> First of all, I want to say, that most of time kamailio works well and
> nothing happens that can drop sessions.
> But from time-to-time something changes (may be in the network) and
> kamailio receives requests with malformed headers (To or From hfs).
>
> The schema:
> uplinks -> kamailio <-> routing server (asterisk)
>
> Malformed messages were received only from asterisk server.
> Sip debug on asterisk showed that messages were transmitted correctly and
> headers were nice.
> But kamailio obtains changed (broken) packets or perhaps can't read them
> properly.
>
> How does it look like:
> Nov 10 12:37:06 kamailio-name kamailio[965]: INFO: <script>: Going to
> NATMANAGE for BYE from sip:useragent7122(a)kamailio_address:5068
> (IP=3Dwss:client_address:62881) - R=3Dsip:dialed_did_service(a)asterisk_add=
ress:50600
> ID=3D1b0044070de406153bf0e4b84d6bb793(a)asterisk_address:50600
> Nov 10 12:37:06 kamailio-name kamailio[965]: NOTICE: <script>: Relaying
> request to <null> - R=3Dsip:dialed_did_service(a)asterisk_address:50600 ID=
=3D
> 1b0044070de406153bf0e4b84d6bb793(a)asterisk_address:50600
> Nov 10 12:37:06 kamailio-name kamailio[965]: ERROR: <core>
> [parser/parse_addr_spec.c:719]: parse_addr_spec(): unexpected char [<] in
> status 6: [<sip:useragent6] .
> Nov 10 12:37:06 kamailio-name kamailio[965]: ERROR: <core>
> [parser/parse_from.c:75]: parse_from_header(): bad From header
> [<sip:useragent6<+.w>;tag=3Djja7l45gd1]
> Nov 10 12:37:06 kamailio-name kamailio[965]: ERROR: dialog
> [dlg_cseq.c:89]: dlg_cseq_prepare_msg(): cannot parse FROM header
> Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: <core>
> [parser/parse_addr_spec.c:719]: parse_addr_spec(): unexpected char [<] in
> status 6: [<sip:useragent6] .
> Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: <core>
> [parser/parse_from.c:75]: parse_from_header(): bad From header
> [<sip:useragent6<+.w>;tag=3Djja7l45gd1]
> Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: dialog
> [dlg_cseq.c:89]: dlg_cseq_prepare_msg(): cannot parse FROM header
> Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: <core>
> [parser/parse_addr_spec.c:719]: parse_addr_spec(): unexpected char [<] in
> status 6: [<sip:useragent6] .
> Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: <core>
> [parser/parse_from.c:75]: parse_from_header(): bad From header
> [<sip:useragent6<+.w>;tag=3Djja7l45gd1]
> Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: uac [replace.c:783]:
> restore_uris_reply(): failed to find/parse FROM hdr
> Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: <core>
> [parser/parse_addr_spec.c:719]: parse_addr_spec(): unexpected char [<] in
> status 6: [<sip:useragent6] .
> Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: <core>
> [parser/parse_from.c:75]: parse_from_header(): bad From header
> [<sip:useragent6<+.w>;tag=3Djja7l45gd1]
> Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: pv [pv_core.c:465]:
> pv_get_from_attr(): cannot parse From header
> Nov 10 12:37:06 kamailio-name kamailio[937]: INFO: <script>: Skip manage
> DEVICE_STATE for BYE from <null> (IP=3Dudp:asterisk_address:50600) with
> (200 - OK) - R=3D<null> ID=3D1b0044070de406153bf0e4b84d6bb793(a)asterisk_ad=
dress
> :50600
> Nov 10 12:37:06 kamailio-name kamailio[937]: INFO: <script>:
> ------------------------------------MANAGE BYE by DEVICE_STATE_BYE_MANAGE
> route - 200 - OK M=3DBYE IP=3Dudp:asterisk_address:50600 ID=3D
> 1b0044070de406153bf0e4b84d6bb793(a)asterisk_address:50600
> Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: <core>
> [parser/parse_addr_spec.c:719]: parse_addr_spec(): unexpected char [<] in
> status 6: [<sip:useragent6] .
> Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: <core>
> [parser/parse_from.c:75]: parse_from_header(): bad From header
> [<sip:useragent6<+.w>;tag=3Djja7l45gd1]
> Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: pv [pv_core.c:465]:
> pv_get_from_attr(): cannot parse From header
> Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: <core>
> [parser/parse_addr_spec.c:719]: parse_addr_spec(): unexpected char [<] in
> status 6: [<sip:useragent6] .
> Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: <core>
> [parser/parse_from.c:75]: parse_from_header(): bad From header
> [<sip:useragent6<+.w>;tag=3Djja7l45gd1]
> Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: rtpengine
> [rtpengine_funcs.c:331]: get_from_tag(): failed to parse From header
> Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: rtpengine
> [rtpengine.c:2252]: rtpp_function_call(): can't get From tag
> Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: <core>
> [parser/parse_addr_spec.c:719]: parse_addr_spec(): unexpected char [<] in
> status 6: [<sip:useragent6] .
> Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: <core>
> [parser/parse_from.c:75]: parse_from_header(): bad From header
> [<sip:useragent6<+.w>;tag=3Djja7l45gd1]
> Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: pv [pv_core.c:465]:
> pv_get_from_attr(): cannot parse From header
> Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: <core>
> [parser/parse_addr_spec.c:719]: parse_addr_spec(): unexpected char [<] in
> status 6: [<sip:useragent6] .
> Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: <core>
> [parser/parse_from.c:75]: parse_from_header(): bad From header
> [<sip:useragent6<+.w>;tag=3Djja7l45gd1]
> Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: pv [pv_core.c:465]:
> pv_get_from_attr(): cannot parse From header
>
> How the packet looks like:
> ACK sip:tt7etmau(a)bb0pd5t63b26.invalid;alias=3Dclient_address~57573~6;tran=
sport=3Dws
> SIP/2.0
> Via: SIP/2.0/UDP asterisk_address:50600;branch=3Dz9hG4bK117106ca;rport
> Route: <sip:kam2.domain.com:5068;nat=3Dyes;transport=3Dudp;r2=3Don;ftag=3D
> as06869a5d;lr=3Don;vsf=3DAAAAAEZZSVVDVV1VRBlUUkUpFQxdVU
> ZYXiRCHU1RQl1HRVNaXhhAQ3RuLnR3aWxpby5jb20-;vst=3D
> AAAAAAAAAAAAAAAAAAAAAAAfBwQRQE8NBR9BChIFAwddCgADFEVDQlYudHdp
> bGlvLmNvbQ--;did=3Db0c.7331>,<sip:kam2.callision.com:5068;
> nat=3Dyes;transport=3Dws;r2=3Don;ftag=3Das06869a5d;lr=3Don;vsf=3D
> AAAAAEZZSVVDVV1VRBlUUkUpFQxdVUZYXiRCHU1RQl1HRVNaXhhAQ3RuLnR3
> aWxpby5jb20-;vst=3DAAAAAAAAAAAAAAAAAAAAAAAfBwQRQE
> 8NBR9BChIFAwddCgADFEVDQlYudHdpbGlvLmNvbQ--;did=3Db0c.7331>
> Max-Forwards: 70
> From: "19172423539 <(917)%20242-3539>" <sip:19172423539 <(917)%20242-3539>
> @asterisk_address:50600>;tag=3Das06869a5d
> To: <sip:useragent7122(a)10.0.1.18:5068>;tag=3Dnmv7kmpau3
> Contact: <sip:19172423539 <(917)%20242-3539>@asterisk_address:50600>
> Call-ID: 629d5a132c194c536b5f5c1a2a3c6e32(a)asterisk_address:50600
> CSeq: 102 ACK
> User-Agent: asterisk PBX
> Content-Length: 0
>
>
> The transport is used to send messages between asterisk and kamailio is
> TCP.
> TCP configurations:
> tcp_connection_lifetime=3D3604
> tcp_accept_no_cl=3Dyes
> tcp_connect_timeout=3D5
> tcp_send_timeout=3D5
> tcp_rd_buf_size=3D16384
> tcp_keepalive=3Dyes
> tcp_crlf_ping=3Dyes
> tcp_keepcnt=3D3
> tcp_keepidle=3D30
> tcp_keepintvl=3D15
> tcp_max_connections=3D4096
>
> I found the idea, that we need to change following parameters:
> modparam("uac","restore_mode","auto")
> modparam("uac","restore_dlg",1)
>
> to:
> modparam("uac","restore_mode","none")
> modparam("uac","restore_dlg",0)
>
> I did that, now it looks like all is fine, but I think it can get back.
> Thanks in advance.
>
>
>
> --
> --
> BR, Donat Zenichev
> Wnet VoIP team
> Tel Ukraine:  +380(44) 5-900-800
> Tel USA: +164(67) 8-174-17
> https://w-net.us/ <http://wnet.ua>
>
> _______________________________________________
> Kamailio (SER) - Users Mailing List
> sr-users(a)lists.kamailio.org
> https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users
>
>



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--===============1643988195==--


From miconda@gmail.com Tue Nov 14 08:47:42 2017
From: Daniel-Constantin Mierla <miconda@gmail.com>
To: sr-users@lists.kamailio.org
Subject: Re: [SR-Users] parse_from_header(): bad From header
Date: Tue, 14 Nov 2017 08:47:30 +0100
Message-ID: <adfe057e-4d66-fe4c-e77c-db57b7bccfc8@gmail.com>
In-Reply-To:
 <CAASaakZ=UM-12QCU6Ygm5BwHgM0Jo39zhp1Kk4M7PNuS3W+NYg@mail.gmail.com>
MIME-Version: 1.0
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Hello,

it would be useful to know also the version of kamailio that is run
there. The latest release series should have a safety check in order to
prevent setting an invalid restored From/To URI.

On the other hand, if the UA doesn't preserve the From/To, then it
doesn't require to be unchanged, so the update (without auto restore) of
the From/To can be done only for initial INVITE, when UA takes the
caller/callee ids. For requests within the dialog, these headers can be
left unchanged or changed to something like anonymous(a)anonymous.invalid

The last option here, which is the safest, is to use dialog module
together with uac, so uac module stores the From/To values inside the
dialog and restores them from there, instead of relying on
record-routing and the masking algorithm for values.

Cheers,
Daniel


On 14.11.17 08:04, Julia Boudniatsky wrote:
> Hello,
>
> It looks like headers "From" in initial INVITE and received message
> are different.
>
> For example:
> =C2=A0in INVITE : <sip:useragent7122(a)kamailio_address:5068>
> =C2=A0in received message :=C2=A0<sip:useragent7122(a)kamailio_address>
>
> When you use header "From" transformation (I see Route with vsf),
> restore may be correct only for exactly the same header "From".
> Check may be port number is missing/added in=C2=A0 received message header
> "From".
>
> Best regards,
> Julia
>
> On Mon, Nov 13, 2017 at 5:05 PM, Donat Zenichev
> <donat.zenichev(a)gmail.com <mailto:donat.zenichev(a)gmail.com>> wrote:
>
>     Hi community.
>     We experience the problem with malformed messages.
>
>     First of all, I want to say, that most of time kamailio works well
>     and nothing happens that can drop sessions.
>     But from time-to-time something changes (may be in the network)
>     and kamailio receives requests with malformed headers (To or From
>     hfs).
>
>     The schema:
>     uplinks -> kamailio <-> routing server (asterisk)
>
>     Malformed messages were received only from asterisk server.
>     Sip debug on asterisk showed that messages were transmitted
>     correctly and headers were nice.
>     But kamailio obtains changed (broken) packets or perhaps can't
>     read them properly.
>
>     How does it look like:
>     Nov 10 12:37:06 kamailio-name kamailio[965]: INFO: <script>: Going
>     to NATMANAGE for BYE from sip:useragent7122(a)kamailio_address:5068
>     (IP=3Dwss:client_address:62881) -
>     R=3Dsip:dialed_did_service(a)asterisk_address:50600
>     ID=3D1b0044070de406153bf0e4b84d6bb793(a)asterisk_address:50600
>     Nov 10 12:37:06 kamailio-name kamailio[965]: NOTICE: <script>:
>     Relaying request to <null> -
>     R=3Dsip:dialed_did_service(a)asterisk_address:50600
>     ID=3D1b0044070de406153bf0e4b84d6bb793(a)asterisk_address:50600
>     Nov 10 12:37:06 kamailio-name kamailio[965]: ERROR: <core>
>     [parser/parse_addr_spec.c:719]: parse_addr_spec(): unexpected char
>     [<] in status 6: [<sip:useragent6] .
>     Nov 10 12:37:06 kamailio-name kamailio[965]: ERROR: <core>
>     [parser/parse_from.c:75]: parse_from_header(): bad From header
>     [<sip:useragent6<+.w>;tag=3Djja7l45gd1]
>     Nov 10 12:37:06 kamailio-name kamailio[965]: ERROR: dialog
>     [dlg_cseq.c:89]: dlg_cseq_prepare_msg(): cannot parse FROM header
>     Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: <core>
>     [parser/parse_addr_spec.c:719]: parse_addr_spec(): unexpected char
>     [<] in status 6: [<sip:useragent6] .
>     Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: <core>
>     [parser/parse_from.c:75]: parse_from_header(): bad From header
>     [<sip:useragent6<+.w>;tag=3Djja7l45gd1]
>     Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: dialog
>     [dlg_cseq.c:89]: dlg_cseq_prepare_msg(): cannot parse FROM header
>     Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: <core>
>     [parser/parse_addr_spec.c:719]: parse_addr_spec(): unexpected char
>     [<] in status 6: [<sip:useragent6] .
>     Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: <core>
>     [parser/parse_from.c:75]: parse_from_header(): bad From header
>     [<sip:useragent6<+.w>;tag=3Djja7l45gd1]
>     Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: uac
>     [replace.c:783]: restore_uris_reply(): failed to find/parse FROM hdr
>     Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: <core>
>     [parser/parse_addr_spec.c:719]: parse_addr_spec(): unexpected char
>     [<] in status 6: [<sip:useragent6] .
>     Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: <core>
>     [parser/parse_from.c:75]: parse_from_header(): bad From header
>     [<sip:useragent6<+.w>;tag=3Djja7l45gd1]
>     Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: pv
>     [pv_core.c:465]: pv_get_from_attr(): cannot parse From header
>     Nov 10 12:37:06 kamailio-name kamailio[937]: INFO: <script>: Skip
>     manage DEVICE_STATE for BYE from <null>
>     (IP=3Dudp:asterisk_address:50600) with (200 - OK) - R=3D<null>
>     ID=3D1b0044070de406153bf0e4b84d6bb793(a)asterisk_address:50600
>     Nov 10 12:37:06 kamailio-name kamailio[937]: INFO: <script>:
>     ------------------------------------MANAGE BYE by
>     DEVICE_STATE_BYE_MANAGE route - 200 - OK M=3DBYE
>     IP=3Dudp:asterisk_address:50600
>     ID=3D1b0044070de406153bf0e4b84d6bb793(a)asterisk_address:50600
>     Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: <core>
>     [parser/parse_addr_spec.c:719]: parse_addr_spec(): unexpected char
>     [<] in status 6: [<sip:useragent6] .
>     Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: <core>
>     [parser/parse_from.c:75]: parse_from_header(): bad From header
>     [<sip:useragent6<+.w>;tag=3Djja7l45gd1]
>     Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: pv
>     [pv_core.c:465]: pv_get_from_attr(): cannot parse From header
>     Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: <core>
>     [parser/parse_addr_spec.c:719]: parse_addr_spec(): unexpected char
>     [<] in status 6: [<sip:useragent6] .
>     Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: <core>
>     [parser/parse_from.c:75]: parse_from_header(): bad From header
>     [<sip:useragent6<+.w>;tag=3Djja7l45gd1]
>     Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: rtpengine
>     [rtpengine_funcs.c:331]: get_from_tag(): failed to parse From header
>     Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: rtpengine
>     [rtpengine.c:2252]: rtpp_function_call(): can't get From tag
>     Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: <core>
>     [parser/parse_addr_spec.c:719]: parse_addr_spec(): unexpected char
>     [<] in status 6: [<sip:useragent6] .
>     Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: <core>
>     [parser/parse_from.c:75]: parse_from_header(): bad From header
>     [<sip:useragent6<+.w>;tag=3Djja7l45gd1]
>     Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: pv
>     [pv_core.c:465]: pv_get_from_attr(): cannot parse From header
>     Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: <core>
>     [parser/parse_addr_spec.c:719]: parse_addr_spec(): unexpected char
>     [<] in status 6: [<sip:useragent6] .
>     Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: <core>
>     [parser/parse_from.c:75]: parse_from_header(): bad From header
>     [<sip:useragent6<+.w>;tag=3Djja7l45gd1]
>     Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: pv
>     [pv_core.c:465]: pv_get_from_attr(): cannot parse From header
>
>     How the packet looks like:
>     ACK
>     sip:tt7etmau(a)bb0pd5t63b26.invalid;alias=3Dclient_address~57573~6;tran=
sport=3Dws
>     SIP/2.0
>     Via: SIP/2.0/UDP asterisk_address:50600;branch=3Dz9hG4bK117106ca;rport
>     Route:
>     <sip:kam2.domain.com:5068;nat=3Dyes;transport=3Dudp;r2=3Don;ftag=3Das06=
869a5d;lr=3Don;vsf=3DAAAAAEZZSVVDVV1VRBlUUkUpFQxdVUZYXiRCHU1RQl1HRVNaXhhAQ3Ru=
LnR3aWxpby5jb20-;vst=3DAAAAAAAAAAAAAAAAAAAAAAAfBwQRQE8NBR9BChIFAwddCgADFEVDQl=
YudHdpbGlvLmNvbQ--;did=3Db0c.7331>,<sip:kam2.callision.com:5068
>     <http://kam2.callision.com:5068>;nat=3Dyes;transport=3Dws;r2=3Don;ftag=
=3Das06869a5d;lr=3Don;vsf=3DAAAAAEZZSVVDVV1VRBlUUkUpFQxdVUZYXiRCHU1RQl1HRVNaX=
hhAQ3RuLnR3aWxpby5jb20-;vst=3DAAAAAAAAAAAAAAAAAAAAAAAfBwQRQE8NBR9BChIFAwddCgA=
DFEVDQlYudHdpbGlvLmNvbQ--;did=3Db0c.7331>
>     Max-Forwards: 70
>     From: "19172423539 <tel:%28917%29%20242-3539>" <sip:19172423539
>     <tel:%28917%29%20242-3539>@asterisk_address:50600>;tag=3Das06869a5d
>     To: <sip:useragent7122(a)10.0.1.18:5068
>     <http://sip:useragent7122(a)10.0.1.18:5068>>;tag=3Dnmv7kmpau3
>     Contact: <sip:19172423539
>     <tel:%28917%29%20242-3539>@asterisk_address:50600>
>     Call-ID: 629d5a132c194c536b5f5c1a2a3c6e32(a)asterisk_address:50600
>     CSeq: 102 ACK
>     User-Agent: asterisk PBX
>     Content-Length: 0
>
>
>     The transport is used to send messages between asterisk and
>     kamailio is TCP.
>     TCP configurations:
>     tcp_connection_lifetime=3D3604
>     tcp_accept_no_cl=3Dyes
>     tcp_connect_timeout=3D5
>     tcp_send_timeout=3D5
>     tcp_rd_buf_size=3D16384
>     tcp_keepalive=3Dyes
>     tcp_crlf_ping=3Dyes
>     tcp_keepcnt=3D3
>     tcp_keepidle=3D30
>     tcp_keepintvl=3D15
>     tcp_max_connections=3D4096=C2=A0
>
>     I found the idea, that we need to change following parameters:
>     modparam("uac","restore_mode","auto")
>     modparam("uac","restore_dlg",1)
>
>     to:
>     modparam("uac","restore_mode","none")
>     modparam("uac","restore_dlg",0)
>
>     I did that, now it looks like all is fine, but I think it can get
>     back.
>     Thanks in advance.
>
>
>
>     --=20
>     --=C2=A0
>     BR, Donat Zenichev
>     Wnet VoIP team
>     Tel Ukraine:=C2=A0 +380(44) 5-900-800
>     Tel USA: +164(67) 8-174-17
>     https://w-net.us/ <http://wnet.ua>
>
>     _______________________________________________
>     Kamailio (SER) - Users Mailing List
>     sr-users(a)lists.kamailio.org <mailto:sr-users(a)lists.kamailio.org>
>     https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users
>     <https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users>
>
>
>
>
> _______________________________________________
> Kamailio (SER) - Users Mailing List
> sr-users(a)lists.kamailio.org
> https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users

--=20
Daniel-Constantin Mierla
www.twitter.com/miconda -- www.linkedin.com/in/miconda
Kamailio Advanced Training, Nov 13-15, 2017, in Berlin - www.asipto.com
Kamailio World Conference - www.kamailioworld.com




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--===============1378309004==--


From donat.zenichev@gmail.com Thu Nov 16 14:42:57 2017
From: Donat Zenichev <donat.zenichev@gmail.com>
To: sr-users@lists.kamailio.org
Subject: Re: [SR-Users] parse_from_header(): bad From header
Date: Thu, 16 Nov 2017 15:42:44 +0200
Message-ID:
 <CANLwQCn1_RXzE4YNXTaVZWvTqqvpTcEvHq+BazYAYT_j8YrxjQ@mail.gmail.com>
In-Reply-To:
 <CANLwQCk49wRP8zcbN-zV3RPgfe0=gAf3Ejn6bwnhMtPY9vPV2w@mail.gmail.com>
MIME-Version: 1.0
Content-Type: multipart/mixed; boundary="===============0690324235=="

--===============0690324235==
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: quoted-printable

Hi Daniel.
We are using now kamailio 4.4.6

"the latest release series should have a safety check.." does it mean
stable 5.0.4 ?
Well it is a reasonable advice I think, we haven't tried this way, yet.

I thought about using uac + dialog module together, but this entails a
lot of changes in common logic.

For that moment looks like disabling the restore_mode and restore_dlg
parameters solved the problem.
So that, it is enough for me to keep calm. But further, I want to make
an effort to turn on dialog/uac modules together.

Thanks for your answers.
I will continue this topic as soon as I will start to work with it.


>Hello,
>
>it would be useful to know also the version of kamailio that is run
>there. The latest release series should have a safety check in order to
>prevent setting an invalid restored From/To URI.
>
>On the other hand, if the UA doesn't preserve the From/To, then it
>doesn't require to be unchanged, so the update (without auto restore) of
>the From/To can be done only for initial INVITE, when UA takes the
>caller/callee ids. For requests within the dialog, these headers can be
>left unchanged or changed to something like anonymous at anonymous.invalid
>
>The last option here, which is the safest, is to use dialog module
>together with uac, so uac module stores the From/To values inside the
>dialog and restores them from there, instead of relying on
>record-routing and the masking algorithm for values.
>
>Cheers,
>Daniel
>
>>>On 14.11.17 08:04, Julia Boudniatsky wrote:
>> Hello,
>>
>> It looks like headers "From" in initial INVITE and received message
>> are different.
>>
>> For example:
>>  in INVITE : <sip:useragent7122 at kamailio_address:5068>>
>>  in received message : <sip:useragent7122 at kamailio_address>>
>>
>> When you use header "From" transformation (I see Route with vsf),
>> restore may be correct only for exactly the same header "From".
>> Check may be port number is missing/added in  received message header
>> "From".
>>
>> Best regards,
>> Julia
>>
>> On Mon, Nov 13, 2017 at 5:05 PM, Donat Zenichev
>> <donat.zenichev at gmail.com <mailto:donat.zenichev at gmail.com>>>> wrote:
>>
>>     Hi community.
>>     We experience the problem with malformed messages.
>>
>>     First of all, I want to say, that most of time kamailio works well
>>     and nothing happens that can drop sessions.
>>     But from time-to-time something changes (may be in the network)
>>     and kamailio receives requests with malformed headers (To or From
>>     hfs).
>>
>>     The schema:
>>     uplinks ->> kamailio <->> routing server (asterisk)
>>
>>     Malformed messages were received only from asterisk server.
>>     Sip debug on asterisk showed that messages were transmitted
>>     correctly and headers were nice.
>>     But kamailio obtains changed (broken) packets or perhaps can't
>>     read them properly.
>>
>>     How does it look like:
>>     Nov 10 12:37:06 kamailio-name kamailio[965]: INFO: <script>>: Going
>>     to NATMANAGE for BYE from sip:useragent7122 at kamailio_address:5068
>>     (IP=3Dwss:client_address:62881) -
>>     R=3Dsip:dialed_did_service at asterisk_address:50600
>>     ID=3D1b0044070de406153bf0e4b84d6bb793 at asterisk_address:50600
>>     Nov 10 12:37:06 kamailio-name kamailio[965]: NOTICE: <script>>:
>>     Relaying request to <null>> -
>>     R=3Dsip:dialed_did_service at asterisk_address:50600
>>     ID=3D1b0044070de406153bf0e4b84d6bb793 at asterisk_address:50600
>>     Nov 10 12:37:06 kamailio-name kamailio[965]: ERROR: <core>>
>>     [parser/parse_addr_spec.c:719]: parse_addr_spec(): unexpected char
>>     [<] in status 6: [<sip:useragent6] .
>>     Nov 10 12:37:06 kamailio-name kamailio[965]: ERROR: <core>>
>>     [parser/parse_from.c:75]: parse_from_header(): bad From header
>>     [<sip:useragent6<+.w>>;tag=3Djja7l45gd1]
>>     Nov 10 12:37:06 kamailio-name kamailio[965]: ERROR: dialog
>>     [dlg_cseq.c:89]: dlg_cseq_prepare_msg(): cannot parse FROM header
>>     Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: <core>>
>>     [parser/parse_addr_spec.c:719]: parse_addr_spec(): unexpected char
>>     [<] in status 6: [<sip:useragent6] .
>>     Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: <core>>
>>     [parser/parse_from.c:75]: parse_from_header(): bad From header
>>     [<sip:useragent6<+.w>>;tag=3Djja7l45gd1]
>>     Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: dialog
>>     [dlg_cseq.c:89]: dlg_cseq_prepare_msg(): cannot parse FROM header
>>     Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: <core>>
>>     [parser/parse_addr_spec.c:719]: parse_addr_spec(): unexpected char
>>     [<] in status 6: [<sip:useragent6] .
>>     Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: <core>>
>>     [parser/parse_from.c:75]: parse_from_header(): bad From header
>>     [<sip:useragent6<+.w>>;tag=3Djja7l45gd1]
>>     Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: uac
>>     [replace.c:783]: restore_uris_reply(): failed to find/parse FROM hdr
>>     Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: <core>>
>>     [parser/parse_addr_spec.c:719]: parse_addr_spec(): unexpected char
>>     [<] in status 6: [<sip:useragent6] .
>>     Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: <core>>
>>     [parser/parse_from.c:75]: parse_from_header(): bad From header
>>     [<sip:useragent6<+.w>>;tag=3Djja7l45gd1]
>>     Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: pv
>>     [pv_core.c:465]: pv_get_from_attr(): cannot parse From header
>>     Nov 10 12:37:06 kamailio-name kamailio[937]: INFO: <script>>: Skip
>>     manage DEVICE_STATE for BYE from <null>>
>>     (IP=3Dudp:asterisk_address:50600) with (200 - OK) - R=3D<null>>
>>     ID=3D1b0044070de406153bf0e4b84d6bb793 at asterisk_address:50600
>>     Nov 10 12:37:06 kamailio-name kamailio[937]: INFO: <script>>:
>>     ------------------------------------MANAGE BYE by
>>     DEVICE_STATE_BYE_MANAGE route - 200 - OK M=3DBYE
>>     IP=3Dudp:asterisk_address:50600
>>     ID=3D1b0044070de406153bf0e4b84d6bb793 at asterisk_address:50600
>>     Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: <core>>
>>     [parser/parse_addr_spec.c:719]: parse_addr_spec(): unexpected char
>>     [<] in status 6: [<sip:useragent6] .
>>     Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: <core>>
>>     [parser/parse_from.c:75]: parse_from_header(): bad From header
>>     [<sip:useragent6<+.w>>;tag=3Djja7l45gd1]
>>     Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: pv
>>     [pv_core.c:465]: pv_get_from_attr(): cannot parse From header
>>     Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: <core>>
>>     [parser/parse_addr_spec.c:719]: parse_addr_spec(): unexpected char
>>     [<] in status 6: [<sip:useragent6] .
>>     Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: <core>>
>>     [parser/parse_from.c:75]: parse_from_header(): bad From header
>>     [<sip:useragent6<+.w>>;tag=3Djja7l45gd1]
>>     Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: rtpengine
>>     [rtpengine_funcs.c:331]: get_from_tag(): failed to parse From header
>>     Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: rtpengine
>>     [rtpengine.c:2252]: rtpp_function_call(): can't get From tag
>>     Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: <core>>
>>     [parser/parse_addr_spec.c:719]: parse_addr_spec(): unexpected char
>>     [<] in status 6: [<sip:useragent6] .
>>     Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: <core>>
>>     [parser/parse_from.c:75]: parse_from_header(): bad From header
>>     [<sip:useragent6<+.w>>;tag=3Djja7l45gd1]
>>     Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: pv
>>     [pv_core.c:465]: pv_get_from_attr(): cannot parse From header
>>     Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: <core>>
>>     [parser/parse_addr_spec.c:719]: parse_addr_spec(): unexpected char
>>     [<] in status 6: [<sip:useragent6] .
>>     Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: <core>>
>>     [parser/parse_from.c:75]: parse_from_header(): bad From header
>>     [<sip:useragent6<+.w>>;tag=3Djja7l45gd1]
>>     Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: pv
>>     [pv_core.c:465]: pv_get_from_attr(): cannot parse From header
>>
>>     How the packet looks like:
>>     ACK
>>     sip:tt7etmau at bb0pd5t63b26.invalid;alias=3Dclient_address~57573~6;tr=
ansport=3Dws
>>     SIP/2.0
>>     Via: SIP/2.0/UDP asterisk_address:50600;branch=3Dz9hG4bK117106ca;rport
>>     Route:
>>     <sip:kam2.domain.com:5068;nat=3Dyes;transport=3Dudp;r2=3Don;ftag=3Das0=
6869a5d;lr=3Don;vsf=3DAAAAAEZZSVVDVV1VRBlUUkUpFQxdVUZYXiRCHU1RQl1HRVNaXhhAQ3R=
uLnR3aWxpby5jb20-;vst=3DAAAAAAAAAAAAAAAAAAAAAAAfBwQRQE8NBR9BChIFAwddCgADFEVDQ=
lYudHdpbGlvLmNvbQ--;did=3Db0c.7331>>,<sip:kam2.callision.com:5068
>>     <http://kam2.callision.com:5068>>;nat=3Dyes;transport=3Dws;r2=3Don;fta=
g=3Das06869a5d;lr=3Don;vsf=3DAAAAAEZZSVVDVV1VRBlUUkUpFQxdVUZYXiRCHU1RQl1HRVNa=
XhhAQ3RuLnR3aWxpby5jb20-;vst=3DAAAAAAAAAAAAAAAAAAAAAAAfBwQRQE8NBR9BChIFAwddCg=
ADFEVDQlYudHdpbGlvLmNvbQ--;did=3Db0c.7331>>
>>     Max-Forwards: 70
>>     From: "19172423539 <tel:%28917%29%20242-3539>>" <sip:19172423539
>>     <tel:%28917%29%20242-3539>>@asterisk_address:50600>>;tag=3Das06869a5d
>>     To: <sip:useragent7122 at 10.0.1.18:5068
>>     <http://sip:useragent7122(a)10.0.1.18:5068>>>>;tag=3Dnmv7kmpau3
>>     Contact: <sip:19172423539
>>     <tel:%28917%29%20242-3539>>@asterisk_address:50600>>
>>     Call-ID: 629d5a132c194c536b5f5c1a2a3c6e32 at asterisk_address:50600
>>     CSeq: 102 ACK
>>     User-Agent: asterisk PBX
>>     Content-Length: 0
>>
>>
>>     The transport is used to send messages between asterisk and
>>     kamailio is TCP.
>>     TCP configurations:
>>     tcp_connection_lifetime=3D3604
>>     tcp_accept_no_cl=3Dyes
>>     tcp_connect_timeout=3D5
>>     tcp_send_timeout=3D5
>>     tcp_rd_buf_size=3D16384
>>     tcp_keepalive=3Dyes
>>     tcp_crlf_ping=3Dyes
>>     tcp_keepcnt=3D3
>>     tcp_keepidle=3D30
>>     tcp_keepintvl=3D15
>>     tcp_max_connections=3D4096
>>
>>     I found the idea, that we need to change following parameters:
>>     modparam("uac","restore_mode","auto")
>>     modparam("uac","restore_dlg",1)
>>
>>     to:
>>     modparam("uac","restore_mode","none")
>>     modparam("uac","restore_dlg",0)
>>
>>     I did that, now it looks like all is fine, but I think it can get
>>     back.
>>     Thanks in advance.
>>
>>
>>
>>     --
>>     --
>>     BR, Donat Zenichev
>>     Wnet VoIP team
>>     Tel Ukraine:  +380(44) 5-900-800
>>     Tel USA: +164(67) 8-174-17
>>     https://w-net.us/ <http://wnet.ua>>
>>
>>     _______________________________________________
>>     Kamailio (SER) - Users Mailing List
>>     sr-users at lists.kamailio.org <mailto:sr-users at lists.kamailio.org>>
>>     https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users
>>     <https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users>>
>>
>>
>>
>>
>> _______________________________________________
>> Kamailio (SER) - Users Mailing List
>> sr-users at lists.kamailio.org
>> https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users

>>--
>Daniel-Constantin Mierla
>www.twitter.com/miconda -- www.linkedin.com/in/miconda
>Kamailio Advanced Training, Nov 13-15, 2017, in Berlin - www.asipto.com
>Kamailio World Conference - www.kamailioworld.com



2017-11-13 17:05 GMT+02:00 Donat Zenichev <donat.zenichev(a)gmail.com>:

> Hi community.
> We experience the problem with malformed messages.
>
> First of all, I want to say, that most of time kamailio works well and
> nothing happens that can drop sessions.
> But from time-to-time something changes (may be in the network) and
> kamailio receives requests with malformed headers (To or From hfs).
>
> The schema:
> uplinks -> kamailio <-> routing server (asterisk)
>
> Malformed messages were received only from asterisk server.
> Sip debug on asterisk showed that messages were transmitted correctly and
> headers were nice.
> But kamailio obtains changed (broken) packets or perhaps can't read them
> properly.
>
> How does it look like:
> Nov 10 12:37:06 kamailio-name kamailio[965]: INFO: <script>: Going to
> NATMANAGE for BYE from sip:useragent7122(a)kamailio_address:5068
> (IP=3Dwss:client_address:62881) - R=3Dsip:dialed_did_service(a)asterisk_add=
ress:50600
> ID=3D1b0044070de406153bf0e4b84d6bb793(a)asterisk_address:50600
> Nov 10 12:37:06 kamailio-name kamailio[965]: NOTICE: <script>: Relaying
> request to <null> - R=3Dsip:dialed_did_service(a)asterisk_address:50600 ID=
=3D
> 1b0044070de406153bf0e4b84d6bb793(a)asterisk_address:50600
> Nov 10 12:37:06 kamailio-name kamailio[965]: ERROR: <core>
> [parser/parse_addr_spec.c:719]: parse_addr_spec(): unexpected char [<] in
> status 6: [<sip:useragent6] .
> Nov 10 12:37:06 kamailio-name kamailio[965]: ERROR: <core>
> [parser/parse_from.c:75]: parse_from_header(): bad From header
> [<sip:useragent6<+.w>;tag=3Djja7l45gd1]
> Nov 10 12:37:06 kamailio-name kamailio[965]: ERROR: dialog
> [dlg_cseq.c:89]: dlg_cseq_prepare_msg(): cannot parse FROM header
> Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: <core>
> [parser/parse_addr_spec.c:719]: parse_addr_spec(): unexpected char [<] in
> status 6: [<sip:useragent6] .
> Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: <core>
> [parser/parse_from.c:75]: parse_from_header(): bad From header
> [<sip:useragent6<+.w>;tag=3Djja7l45gd1]
> Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: dialog
> [dlg_cseq.c:89]: dlg_cseq_prepare_msg(): cannot parse FROM header
> Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: <core>
> [parser/parse_addr_spec.c:719]: parse_addr_spec(): unexpected char [<] in
> status 6: [<sip:useragent6] .
> Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: <core>
> [parser/parse_from.c:75]: parse_from_header(): bad From header
> [<sip:useragent6<+.w>;tag=3Djja7l45gd1]
> Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: uac [replace.c:783]:
> restore_uris_reply(): failed to find/parse FROM hdr
> Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: <core>
> [parser/parse_addr_spec.c:719]: parse_addr_spec(): unexpected char [<] in
> status 6: [<sip:useragent6] .
> Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: <core>
> [parser/parse_from.c:75]: parse_from_header(): bad From header
> [<sip:useragent6<+.w>;tag=3Djja7l45gd1]
> Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: pv [pv_core.c:465]:
> pv_get_from_attr(): cannot parse From header
> Nov 10 12:37:06 kamailio-name kamailio[937]: INFO: <script>: Skip manage
> DEVICE_STATE for BYE from <null> (IP=3Dudp:asterisk_address:50600) with
> (200 - OK) - R=3D<null> ID=3D1b0044070de406153bf0e4b84d6bb793(a)asterisk_ad=
dress
> :50600
> Nov 10 12:37:06 kamailio-name kamailio[937]: INFO: <script>:
> ------------------------------------MANAGE BYE by DEVICE_STATE_BYE_MANAGE
> route - 200 - OK M=3DBYE IP=3Dudp:asterisk_address:50600 ID=3D
> 1b0044070de406153bf0e4b84d6bb793(a)asterisk_address:50600
> Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: <core>
> [parser/parse_addr_spec.c:719]: parse_addr_spec(): unexpected char [<] in
> status 6: [<sip:useragent6] .
> Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: <core>
> [parser/parse_from.c:75]: parse_from_header(): bad From header
> [<sip:useragent6<+.w>;tag=3Djja7l45gd1]
> Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: pv [pv_core.c:465]:
> pv_get_from_attr(): cannot parse From header
> Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: <core>
> [parser/parse_addr_spec.c:719]: parse_addr_spec(): unexpected char [<] in
> status 6: [<sip:useragent6] .
> Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: <core>
> [parser/parse_from.c:75]: parse_from_header(): bad From header
> [<sip:useragent6<+.w>;tag=3Djja7l45gd1]
> Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: rtpengine
> [rtpengine_funcs.c:331]: get_from_tag(): failed to parse From header
> Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: rtpengine
> [rtpengine.c:2252]: rtpp_function_call(): can't get From tag
> Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: <core>
> [parser/parse_addr_spec.c:719]: parse_addr_spec(): unexpected char [<] in
> status 6: [<sip:useragent6] .
> Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: <core>
> [parser/parse_from.c:75]: parse_from_header(): bad From header
> [<sip:useragent6<+.w>;tag=3Djja7l45gd1]
> Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: pv [pv_core.c:465]:
> pv_get_from_attr(): cannot parse From header
> Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: <core>
> [parser/parse_addr_spec.c:719]: parse_addr_spec(): unexpected char [<] in
> status 6: [<sip:useragent6] .
> Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: <core>
> [parser/parse_from.c:75]: parse_from_header(): bad From header
> [<sip:useragent6<+.w>;tag=3Djja7l45gd1]
> Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: pv [pv_core.c:465]:
> pv_get_from_attr(): cannot parse From header
>
> How the packet looks like:
> ACK sip:tt7etmau(a)bb0pd5t63b26.invalid;alias=3Dclient_address~57573~6;tran=
sport=3Dws
> SIP/2.0
> Via: SIP/2.0/UDP asterisk_address:50600;branch=3Dz9hG4bK117106ca;rport
> Route: <sip:kam2.domain.com:5068;nat=3Dyes;transport=3Dudp;r2=3Don;ftag=3D
> as06869a5d;lr=3Don;vsf=3DAAAAAEZZSVVDVV1VRBlUUkUpFQxdVU
> ZYXiRCHU1RQl1HRVNaXhhAQ3RuLnR3aWxpby5jb20-;vst=3D
> AAAAAAAAAAAAAAAAAAAAAAAfBwQRQE8NBR9BChIFAwddCgADFEVDQlYudHdp
> bGlvLmNvbQ--;did=3Db0c.7331>,<sip:kam2.callision.com:5068;
> nat=3Dyes;transport=3Dws;r2=3Don;ftag=3Das06869a5d;lr=3Don;vsf=3D
> AAAAAEZZSVVDVV1VRBlUUkUpFQxdVUZYXiRCHU1RQl1HRVNaXhhAQ3RuLnR3
> aWxpby5jb20-;vst=3DAAAAAAAAAAAAAAAAAAAAAAAfBwQRQE
> 8NBR9BChIFAwddCgADFEVDQlYudHdpbGlvLmNvbQ--;did=3Db0c.7331>
> Max-Forwards: 70
> From: "19172423539 <(917)%20242-3539>" <sip:19172423539 <(917)%20242-3539>
> @asterisk_address:50600>;tag=3Das06869a5d
> To: <sip:useragent7122(a)10.0.1.18:5068>;tag=3Dnmv7kmpau3
> Contact: <sip:19172423539 <(917)%20242-3539>@asterisk_address:50600>
> Call-ID: 629d5a132c194c536b5f5c1a2a3c6e32(a)asterisk_address:50600
> CSeq: 102 ACK
> User-Agent: asterisk PBX
> Content-Length: 0
>
>
> The transport is used to send messages between asterisk and kamailio is
> TCP.
> TCP configurations:
> tcp_connection_lifetime=3D3604
> tcp_accept_no_cl=3Dyes
> tcp_connect_timeout=3D5
> tcp_send_timeout=3D5
> tcp_rd_buf_size=3D16384
> tcp_keepalive=3Dyes
> tcp_crlf_ping=3Dyes
> tcp_keepcnt=3D3
> tcp_keepidle=3D30
> tcp_keepintvl=3D15
> tcp_max_connections=3D4096
>
> I found the idea, that we need to change following parameters:
> modparam("uac","restore_mode","auto")
> modparam("uac","restore_dlg",1)
>
> to:
> modparam("uac","restore_mode","none")
> modparam("uac","restore_dlg",0)
>
> I did that, now it looks like all is fine, but I think it can get back.
> Thanks in advance.
>
>
>
> --
> --
> BR, Donat Zenichev
> Wnet VoIP team
> Tel Ukraine:  +380(44) 5-900-800
> Tel USA: +164(67) 8-174-17
> https://w-net.us/ <http://wnet.ua>
>



--=20
--=20
BR, Donat Zenichev
Wnet VoIP team
Tel Ukraine:  +380(44) 5-900-800
Tel USA: +164(67) 8-174-17
https://w-net.us/ <http://wnet.ua>



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--===============0690324235==--


From donat.zenichev@gmail.com Wed Nov 29 16:20:21 2017
From: Donat Zenichev <donat.zenichev@gmail.com>
To: sr-users@lists.kamailio.org
Subject: Re: [SR-Users] parse_from_header(): bad From header
Date: Wed, 29 Nov 2017 17:20:10 +0200
Message-ID:
 <CANLwQCkZDPPxOXcJeM01H09vNt1X=YgNiVjEt04_+HgZTk0GZA@mail.gmail.com>
In-Reply-To:
 <CANLwQCn1_RXzE4YNXTaVZWvTqqvpTcEvHq+BazYAYT_j8YrxjQ@mail.gmail.com>
MIME-Version: 1.0
Content-Type: multipart/mixed; boundary="===============2076810245=="

--===============2076810245==
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: quoted-printable

Problem is solved.

The problem was in wrong regeneration of headers in ACK requests (uac
restore_mode parameter).
This parameter helps to modify From/To headers in all sequential requests
and replies in the same way as it has been modified in initial invite.

The uac from/to replacement relies that parties keep the same from/to
headers content.
The mechanism to replace A with B is to combine both and get the key X
which is added in the record-route as parameter.
Then practically from A and X results B and from B and X results A. It's
doing XOR over base64-encoded values.

And when endpoint or kamailio changes the mid dialog From or To URI, then
XOR against the key produces wrong values.


So the solution was to change this:
modparam("uac","restore_mode","auto")
modparam("uac","restore_dlg",1)

To this one:
modparam("uac","restore_mode","none")
modparam("uac","restore_dlg",0)

This case doesn't mean that uac module works improperly, of course no.
This means, that this options can only be used in topologies that can admit
such behavior.
In our case, kamailio changes $fU to internal numbers (before to send it to
an internal agent) for consistent callerid presentation.

So be careful while using such options in your topologies.




2017-11-16 15:42 GMT+02:00 Donat Zenichev <donat.zenichev(a)gmail.com>:

> Hi Daniel.
> We are using now kamailio 4.4.6
>
> "the latest release series should have a safety check.." does it mean stabl=
e 5.0.4 ?
> Well it is a reasonable advice I think, we haven't tried this way, yet.
>
> I thought about using uac + dialog module together, but this entails a lot =
of changes in common logic.
>
> For that moment looks like disabling the restore_mode and restore_dlg param=
eters solved the problem.
> So that, it is enough for me to keep calm. But further, I want to make an e=
ffort to turn on dialog/uac modules together.
>
> Thanks for your answers.
> I will continue this topic as soon as I will start to work with it.
>
>
> >Hello,
> >
> >it would be useful to know also the version of kamailio that is run
> >there. The latest release series should have a safety check in order to
> >prevent setting an invalid restored From/To URI.
> >
> >On the other hand, if the UA doesn't preserve the From/To, then it
> >doesn't require to be unchanged, so the update (without auto restore) of
> >the From/To can be done only for initial INVITE, when UA takes the
> >caller/callee ids. For requests within the dialog, these headers can be
> >left unchanged or changed to something like anonymous at anonymous.invalid
> >
> >The last option here, which is the safest, is to use dialog module
> >together with uac, so uac module stores the From/To values inside the
> >dialog and restores them from there, instead of relying on
> >record-routing and the masking algorithm for values.
> >
> >Cheers,
> >Daniel
> >
> >>>On 14.11.17 08:04, Julia Boudniatsky wrote:
> >> Hello,
> >>
> >> It looks like headers "From" in initial INVITE and received message
> >> are different.
> >>
> >> For example:
> >>  in INVITE : <sip:useragent7122 at kamailio_address:5068>>
> >>  in received message : <sip:useragent7122 at kamailio_address>>
> >>
> >> When you use header "From" transformation (I see Route with vsf),
> >> restore may be correct only for exactly the same header "From".
> >> Check may be port number is missing/added in  received message header
> >> "From".
> >>
> >> Best regards,
> >> Julia
> >>
> >> On Mon, Nov 13, 2017 at 5:05 PM, Donat Zenichev
> >> <donat.zenichev at gmail.com <mailto:donat.zenichev at gmail.com>>>> wro=
te:
> >>
> >>     Hi community.
> >>     We experience the problem with malformed messages.
> >>
> >>     First of all, I want to say, that most of time kamailio works well
> >>     and nothing happens that can drop sessions.
> >>     But from time-to-time something changes (may be in the network)
> >>     and kamailio receives requests with malformed headers (To or From
> >>     hfs).
> >>
> >>     The schema:
> >>     uplinks ->> kamailio <->> routing server (asterisk)
> >>
> >>     Malformed messages were received only from asterisk server.
> >>     Sip debug on asterisk showed that messages were transmitted
> >>     correctly and headers were nice.
> >>     But kamailio obtains changed (broken) packets or perhaps can't
> >>     read them properly.
> >>
> >>     How does it look like:
> >>     Nov 10 12:37:06 kamailio-name kamailio[965]: INFO: <script>>: Going
> >>     to NATMANAGE for BYE from sip:useragent7122 at kamailio_address:5068
> >>     (IP=3Dwss:client_address:62881) -
> >>     R=3Dsip:dialed_did_service at asterisk_address:50600
> >>     ID=3D1b0044070de406153bf0e4b84d6bb793 at asterisk_address:50600
> >>     Nov 10 12:37:06 kamailio-name kamailio[965]: NOTICE: <script>>:
> >>     Relaying request to <null>> -
> >>     R=3Dsip:dialed_did_service at asterisk_address:50600
> >>     ID=3D1b0044070de406153bf0e4b84d6bb793 at asterisk_address:50600
> >>     Nov 10 12:37:06 kamailio-name kamailio[965]: ERROR: <core>>
> >>     [parser/parse_addr_spec.c:719]: parse_addr_spec(): unexpected char
> >>     [<] in status 6: [<sip:useragent6] .
> >>     Nov 10 12:37:06 kamailio-name kamailio[965]: ERROR: <core>>
> >>     [parser/parse_from.c:75]: parse_from_header(): bad From header
> >>     [<sip:useragent6<+.w>>;tag=3Djja7l45gd1]
> >>     Nov 10 12:37:06 kamailio-name kamailio[965]: ERROR: dialog
> >>     [dlg_cseq.c:89]: dlg_cseq_prepare_msg(): cannot parse FROM header
> >>     Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: <core>>
> >>     [parser/parse_addr_spec.c:719]: parse_addr_spec(): unexpected char
> >>     [<] in status 6: [<sip:useragent6] .
> >>     Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: <core>>
> >>     [parser/parse_from.c:75]: parse_from_header(): bad From header
> >>     [<sip:useragent6<+.w>>;tag=3Djja7l45gd1]
> >>     Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: dialog
> >>     [dlg_cseq.c:89]: dlg_cseq_prepare_msg(): cannot parse FROM header
> >>     Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: <core>>
> >>     [parser/parse_addr_spec.c:719]: parse_addr_spec(): unexpected char
> >>     [<] in status 6: [<sip:useragent6] .
> >>     Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: <core>>
> >>     [parser/parse_from.c:75]: parse_from_header(): bad From header
> >>     [<sip:useragent6<+.w>>;tag=3Djja7l45gd1]
> >>     Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: uac
> >>     [replace.c:783]: restore_uris_reply(): failed to find/parse FROM hdr
> >>     Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: <core>>
> >>     [parser/parse_addr_spec.c:719]: parse_addr_spec(): unexpected char
> >>     [<] in status 6: [<sip:useragent6] .
> >>     Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: <core>>
> >>     [parser/parse_from.c:75]: parse_from_header(): bad From header
> >>     [<sip:useragent6<+.w>>;tag=3Djja7l45gd1]
> >>     Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: pv
> >>     [pv_core.c:465]: pv_get_from_attr(): cannot parse From header
> >>     Nov 10 12:37:06 kamailio-name kamailio[937]: INFO: <script>>: Skip
> >>     manage DEVICE_STATE for BYE from <null>>
> >>     (IP=3Dudp:asterisk_address:50600) with (200 - OK) - R=3D<null>>
> >>     ID=3D1b0044070de406153bf0e4b84d6bb793 at asterisk_address:50600
> >>     Nov 10 12:37:06 kamailio-name kamailio[937]: INFO: <script>>:
> >>     ------------------------------------MANAGE BYE by
> >>     DEVICE_STATE_BYE_MANAGE route - 200 - OK M=3DBYE
> >>     IP=3Dudp:asterisk_address:50600
> >>     ID=3D1b0044070de406153bf0e4b84d6bb793 at asterisk_address:50600
> >>     Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: <core>>
> >>     [parser/parse_addr_spec.c:719]: parse_addr_spec(): unexpected char
> >>     [<] in status 6: [<sip:useragent6] .
> >>     Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: <core>>
> >>     [parser/parse_from.c:75]: parse_from_header(): bad From header
> >>     [<sip:useragent6<+.w>>;tag=3Djja7l45gd1]
> >>     Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: pv
> >>     [pv_core.c:465]: pv_get_from_attr(): cannot parse From header
> >>     Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: <core>>
> >>     [parser/parse_addr_spec.c:719]: parse_addr_spec(): unexpected char
> >>     [<] in status 6: [<sip:useragent6] .
> >>     Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: <core>>
> >>     [parser/parse_from.c:75]: parse_from_header(): bad From header
> >>     [<sip:useragent6<+.w>>;tag=3Djja7l45gd1]
> >>     Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: rtpengine
> >>     [rtpengine_funcs.c:331]: get_from_tag(): failed to parse From header
> >>     Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: rtpengine
> >>     [rtpengine.c:2252]: rtpp_function_call(): can't get From tag
> >>     Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: <core>>
> >>     [parser/parse_addr_spec.c:719]: parse_addr_spec(): unexpected char
> >>     [<] in status 6: [<sip:useragent6] .
> >>     Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: <core>>
> >>     [parser/parse_from.c:75]: parse_from_header(): bad From header
> >>     [<sip:useragent6<+.w>>;tag=3Djja7l45gd1]
> >>     Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: pv
> >>     [pv_core.c:465]: pv_get_from_attr(): cannot parse From header
> >>     Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: <core>>
> >>     [parser/parse_addr_spec.c:719]: parse_addr_spec(): unexpected char
> >>     [<] in status 6: [<sip:useragent6] .
> >>     Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: <core>>
> >>     [parser/parse_from.c:75]: parse_from_header(): bad From header
> >>     [<sip:useragent6<+.w>>;tag=3Djja7l45gd1]
> >>     Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: pv
> >>     [pv_core.c:465]: pv_get_from_attr(): cannot parse From header
> >>
> >>     How the packet looks like:
> >>     ACK
> >>     sip:tt7etmau at bb0pd5t63b26.invalid;alias=3Dclient_address~57573~6;=
transport=3Dws
> >>     SIP/2.0
> >>     Via: SIP/2.0/UDP asterisk_address:50600;branch=3Dz9hG4bK117106ca;rpo=
rt
> >>     Route:
> >>     <sip:kam2.domain.com:5068;nat=3Dyes;transport=3Dudp;r2=3Don;ftag=3Da=
s06869a5d;lr=3Don;vsf=3DAAAAAEZZSVVDVV1VRBlUUkUpFQxdVUZYXiRCHU1RQl1HRVNaXhhAQ=
3RuLnR3aWxpby5jb20-;vst=3DAAAAAAAAAAAAAAAAAAAAAAAfBwQRQE8NBR9BChIFAwddCgADFEV=
DQlYudHdpbGlvLmNvbQ--;did=3Db0c.7331>>,<sip:kam2.callision.com:5068
> >>     <http://kam2.callision.com:5068>>;nat=3Dyes;transport=3Dws;r2=3Don;f=
tag=3Das06869a5d;lr=3Don;vsf=3DAAAAAEZZSVVDVV1VRBlUUkUpFQxdVUZYXiRCHU1RQl1HRV=
NaXhhAQ3RuLnR3aWxpby5jb20-;vst=3DAAAAAAAAAAAAAAAAAAAAAAAfBwQRQE8NBR9BChIFAwdd=
CgADFEVDQlYudHdpbGlvLmNvbQ--;did=3Db0c.7331>>
> >>     Max-Forwards: 70
> >>     From: "19172423539 <tel:%28917%29%20242-3539>>" <sip:19172423539
> >>     <tel:%28917%29%20242-3539>>@asterisk_address:50600>>;tag=3Das06869a5d
> >>     To: <sip:useragent7122 at 10.0.1.18:5068
> >>     <http://sip:useragent7122(a)10.0.1.18:5068>>>>;tag=3Dnmv7kmpau3
> >>     Contact: <sip:19172423539 <(917)%20242-3539>
> >>     <tel:%28917%29%20242-3539>>@asterisk_address:50600>>
> >>     Call-ID: 629d5a132c194c536b5f5c1a2a3c6e32 at asterisk_address:50600
> >>     CSeq: 102 ACK
> >>     User-Agent: asterisk PBX
> >>     Content-Length: 0
> >>
> >>
> >>     The transport is used to send messages between asterisk and
> >>     kamailio is TCP.
> >>     TCP configurations:
> >>     tcp_connection_lifetime=3D3604
> >>     tcp_accept_no_cl=3Dyes
> >>     tcp_connect_timeout=3D5
> >>     tcp_send_timeout=3D5
> >>     tcp_rd_buf_size=3D16384
> >>     tcp_keepalive=3Dyes
> >>     tcp_crlf_ping=3Dyes
> >>     tcp_keepcnt=3D3
> >>     tcp_keepidle=3D30
> >>     tcp_keepintvl=3D15
> >>     tcp_max_connections=3D4096
> >>
> >>     I found the idea, that we need to change following parameters:
> >>     modparam("uac","restore_mode","auto")
> >>     modparam("uac","restore_dlg",1)
> >>
> >>     to:
> >>     modparam("uac","restore_mode","none")
> >>     modparam("uac","restore_dlg",0)
> >>
> >>     I did that, now it looks like all is fine, but I think it can get
> >>     back.
> >>     Thanks in advance.
> >>
> >>
> >>
> >>     --
> >>     --
> >>     BR, Donat Zenichev
> >>     Wnet VoIP team
> >>     Tel Ukraine:  +380(44) 5-900-800
> >>     Tel USA: +164(67) 8-174-17
> >>     https://w-net.us/ <http://wnet.ua>>
> >>
> >>     _______________________________________________
> >>     Kamailio (SER) - Users Mailing List
> >>     sr-users at lists.kamailio.org <mailto:sr-users at lists.kamailio.or=
g>>
> >>     https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users
> >>     <https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users>>
> >>
> >>
> >>
> >>
> >> _______________________________________________
> >> Kamailio (SER) - Users Mailing List
> >> sr-users at lists.kamailio.org
> >> https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users
>
> >>--
> >Daniel-Constantin Mierla
> >www.twitter.com/miconda -- www.linkedin.com/in/miconda
> >Kamailio Advanced Training, Nov 13-15, 2017, in Berlin - www.asipto.com
> >Kamailio World Conference - www.kamailioworld.com
>
>
>
> 2017-11-13 17:05 GMT+02:00 Donat Zenichev <donat.zenichev(a)gmail.com>:
>
>> Hi community.
>> We experience the problem with malformed messages.
>>
>> First of all, I want to say, that most of time kamailio works well and
>> nothing happens that can drop sessions.
>> But from time-to-time something changes (may be in the network) and
>> kamailio receives requests with malformed headers (To or From hfs).
>>
>> The schema:
>> uplinks -> kamailio <-> routing server (asterisk)
>>
>> Malformed messages were received only from asterisk server.
>> Sip debug on asterisk showed that messages were transmitted correctly and
>> headers were nice.
>> But kamailio obtains changed (broken) packets or perhaps can't read them
>> properly.
>>
>> How does it look like:
>> Nov 10 12:37:06 kamailio-name kamailio[965]: INFO: <script>: Going to
>> NATMANAGE for BYE from sip:useragent7122(a)kamailio_address:5068
>> (IP=3Dwss:client_address:62881) - R=3Dsip:dialed_did_service(a)asterisk_ad=
dress:50600
>> ID=3D1b0044070de406153bf0e4b84d6bb793(a)asterisk_address:50600
>> Nov 10 12:37:06 kamailio-name kamailio[965]: NOTICE: <script>: Relaying
>> request to <null> - R=3Dsip:dialed_did_service(a)asterisk_address:50600
>> ID=3D1b0044070de406153bf0e4b84d6bb793(a)asterisk_address:50600
>> Nov 10 12:37:06 kamailio-name kamailio[965]: ERROR: <core>
>> [parser/parse_addr_spec.c:719]: parse_addr_spec(): unexpected char [<]
>> in status 6: [<sip:useragent6] .
>> Nov 10 12:37:06 kamailio-name kamailio[965]: ERROR: <core>
>> [parser/parse_from.c:75]: parse_from_header(): bad From header
>> [<sip:useragent6<+.w>;tag=3Djja7l45gd1]
>> Nov 10 12:37:06 kamailio-name kamailio[965]: ERROR: dialog
>> [dlg_cseq.c:89]: dlg_cseq_prepare_msg(): cannot parse FROM header
>> Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: <core>
>> [parser/parse_addr_spec.c:719]: parse_addr_spec(): unexpected char [<]
>> in status 6: [<sip:useragent6] .
>> Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: <core>
>> [parser/parse_from.c:75]: parse_from_header(): bad From header
>> [<sip:useragent6<+.w>;tag=3Djja7l45gd1]
>> Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: dialog
>> [dlg_cseq.c:89]: dlg_cseq_prepare_msg(): cannot parse FROM header
>> Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: <core>
>> [parser/parse_addr_spec.c:719]: parse_addr_spec(): unexpected char [<]
>> in status 6: [<sip:useragent6] .
>> Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: <core>
>> [parser/parse_from.c:75]: parse_from_header(): bad From header
>> [<sip:useragent6<+.w>;tag=3Djja7l45gd1]
>> Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: uac [replace.c:783]:
>> restore_uris_reply(): failed to find/parse FROM hdr
>> Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: <core>
>> [parser/parse_addr_spec.c:719]: parse_addr_spec(): unexpected char [<]
>> in status 6: [<sip:useragent6] .
>> Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: <core>
>> [parser/parse_from.c:75]: parse_from_header(): bad From header
>> [<sip:useragent6<+.w>;tag=3Djja7l45gd1]
>> Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: pv [pv_core.c:465]:
>> pv_get_from_attr(): cannot parse From header
>> Nov 10 12:37:06 kamailio-name kamailio[937]: INFO: <script>: Skip manage
>> DEVICE_STATE for BYE from <null> (IP=3Dudp:asterisk_address:50600) with
>> (200 - OK) - R=3D<null> ID=3D1b0044070de406153bf0e4b84d6
>> bb793(a)asterisk_address:50600
>> Nov 10 12:37:06 kamailio-name kamailio[937]: INFO: <script>:
>> ------------------------------------MANAGE BYE by
>> DEVICE_STATE_BYE_MANAGE route - 200 - OK M=3DBYE
>> IP=3Dudp:asterisk_address:50600 ID=3D1b0044070de406153bf0e4b84d6
>> bb793(a)asterisk_address:50600
>> Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: <core>
>> [parser/parse_addr_spec.c:719]: parse_addr_spec(): unexpected char [<]
>> in status 6: [<sip:useragent6] .
>> Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: <core>
>> [parser/parse_from.c:75]: parse_from_header(): bad From header
>> [<sip:useragent6<+.w>;tag=3Djja7l45gd1]
>> Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: pv [pv_core.c:465]:
>> pv_get_from_attr(): cannot parse From header
>> Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: <core>
>> [parser/parse_addr_spec.c:719]: parse_addr_spec(): unexpected char [<]
>> in status 6: [<sip:useragent6] .
>> Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: <core>
>> [parser/parse_from.c:75]: parse_from_header(): bad From header
>> [<sip:useragent6<+.w>;tag=3Djja7l45gd1]
>> Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: rtpengine
>> [rtpengine_funcs.c:331]: get_from_tag(): failed to parse From header
>> Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: rtpengine
>> [rtpengine.c:2252]: rtpp_function_call(): can't get From tag
>> Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: <core>
>> [parser/parse_addr_spec.c:719]: parse_addr_spec(): unexpected char [<]
>> in status 6: [<sip:useragent6] .
>> Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: <core>
>> [parser/parse_from.c:75]: parse_from_header(): bad From header
>> [<sip:useragent6<+.w>;tag=3Djja7l45gd1]
>> Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: pv [pv_core.c:465]:
>> pv_get_from_attr(): cannot parse From header
>> Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: <core>
>> [parser/parse_addr_spec.c:719]: parse_addr_spec(): unexpected char [<]
>> in status 6: [<sip:useragent6] .
>> Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: <core>
>> [parser/parse_from.c:75]: parse_from_header(): bad From header
>> [<sip:useragent6<+.w>;tag=3Djja7l45gd1]
>> Nov 10 12:37:06 kamailio-name kamailio[937]: ERROR: pv [pv_core.c:465]:
>> pv_get_from_attr(): cannot parse From header
>>
>> How the packet looks like:
>> ACK sip:tt7etmau(a)bb0pd5t63b26.invalid;alias=3Dclient_address~57573~6;tra=
nsport=3Dws
>> SIP/2.0
>> Via: SIP/2.0/UDP asterisk_address:50600;branch=3Dz9hG4bK117106ca;rport
>> Route: <sip:kam2.domain.com:5068;nat=3Dyes;transport=3Dudp;r2=3Don;ftag=3Da
>> s06869a5d;lr=3Don;vsf=3DAAAAAEZZSVVDVV1VRBlUUkUpFQxdVUZYXiRCHU1R
>> Ql1HRVNaXhhAQ3RuLnR3aWxpby5jb20-;vst=3DAAAAAAAAAAAAAAAAAAAAAAA
>> fBwQRQE8NBR9BChIFAwddCgADFEVDQlYudHdpbGlvLmNvbQ--;did=3Db0c.7331>,<sip:
>> kam2.callision.com:5068;nat=3Dyes;transport=3Dws;r2=3D
>> on;ftag=3Das06869a5d;lr=3Don;vsf=3DAAAAAEZZSVVDVV1VRBlUUkUpFQxdVUZ
>> YXiRCHU1RQl1HRVNaXhhAQ3RuLnR3aWxpby5jb20-;vst=3DAAAAAAAAAAAAAA
>> AAAAAAAAAfBwQRQE8NBR9BChIFAwddCgADFEVDQlYudHdpbGlvLmNvbQ--;did=3Db0c.7331>
>> Max-Forwards: 70
>> From: "19172423539 <(917)%20242-3539>" <sip:19172423539
>> <(917)%20242-3539>@asterisk_address:50600>;tag=3Das06869a5d
>> To: <sip:useragent7122(a)10.0.1.18:5068>;tag=3Dnmv7kmpau3
>> Contact: <sip:19172423539 <(917)%20242-3539>@asterisk_address:50600>
>> Call-ID: 629d5a132c194c536b5f5c1a2a3c6e32(a)asterisk_address:50600
>> CSeq: 102 ACK
>> User-Agent: asterisk PBX
>> Content-Length: 0
>>
>>
>> The transport is used to send messages between asterisk and kamailio is
>> TCP.
>> TCP configurations:
>> tcp_connection_lifetime=3D3604
>> tcp_accept_no_cl=3Dyes
>> tcp_connect_timeout=3D5
>> tcp_send_timeout=3D5
>> tcp_rd_buf_size=3D16384
>> tcp_keepalive=3Dyes
>> tcp_crlf_ping=3Dyes
>> tcp_keepcnt=3D3
>> tcp_keepidle=3D30
>> tcp_keepintvl=3D15
>> tcp_max_connections=3D4096
>>
>> I found the idea, that we need to change following parameters:
>> modparam("uac","restore_mode","auto")
>> modparam("uac","restore_dlg",1)
>>
>> to:
>> modparam("uac","restore_mode","none")
>> modparam("uac","restore_dlg",0)
>>
>> I did that, now it looks like all is fine, but I think it can get back.
>> Thanks in advance.
>>
>>
>>
>> --
>> --
>> BR, Donat Zenichev
>> Wnet VoIP team
>> Tel Ukraine:  +380(44) 5-900-800
>> Tel USA: +164(67) 8-174-17
>> https://w-net.us/ <http://wnet.ua>
>>
>
>
>
> --
> --
> BR, Donat Zenichev
> Wnet VoIP team
> Tel Ukraine:  +380(44) 5-900-800
> Tel USA: +164(67) 8-174-17
> https://w-net.us/ <http://wnet.ua>
>



--=20
--=20
BR, Donat Zenichev
Wnet VoIP team
Tel Ukraine:  +380(44) 5-900-800
Tel USA: +164(67) 8-174-17
https://w-net.us/ <http://wnet.ua>



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--===============2076810245==--