[SR-Users] parse_from_header(): bad From header

Tue Nov 14 08:04:07 CET 2017

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>
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=wss:client_address:62881) - R=sip:dialed_did_service at asterisk_address:50600
> ID=1b0044070de406153bf0e4b84d6bb793 at asterisk_address:50600
> Nov 10 12:37:06 kamailio-name kamailio[965]: NOTICE: <script>: Relaying
> request to <null> - R=sip:dialed_did_service at asterisk_address:50600 ID=
> 1b0044070de406153bf0e4b84d6bb793 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=jja7l45gd1]
> 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=jja7l45gd1]
> 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=jja7l45gd1]
> 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=jja7l45gd1]
> 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=udp:asterisk_address:50600) with
> (200 - OK) - R=<null> ID=1b0044070de406153bf0e4b84d6bb793 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=BYE IP=udp:asterisk_address:50600 ID=
> 1b0044070de406153bf0e4b84d6bb793 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=jja7l45gd1]
> 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=jja7l45gd1]
> 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=jja7l45gd1]
> 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=jja7l45gd1]
> 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=client_address~57573~6;transport=ws
> SIP/2.0
> Via: SIP/2.0/UDP asterisk_address:50600;branch=z9hG4bK117106ca;rport
> Route: <sip:kam2.domain.com:5068;nat=yes;transport=udp;r2=on;ftag=
> as06869a5d;lr=on;vsf=AAAAAEZZSVVDVV1VRBlUUkUpFQxdVU
> ZYXiRCHU1RQl1HRVNaXhhAQ3RuLnR3aWxpby5jb20-;vst=
> AAAAAAAAAAAAAAAAAAAAAAAfBwQRQE8NBR9BChIFAwddCgADFEVDQlYudHdp
> bGlvLmNvbQ--;did=b0c.7331>,<sip:kam2.callision.com:5068;
> nat=yes;transport=ws;r2=on;ftag=as06869a5d;lr=on;vsf=
> AAAAAEZZSVVDVV1VRBlUUkUpFQxdVUZYXiRCHU1RQl1HRVNaXhhAQ3RuLnR3
> aWxpby5jb20-;vst=AAAAAAAAAAAAAAAAAAAAAAAfBwQRQE
> 8NBR9BChIFAwddCgADFEVDQlYudHdpbGlvLmNvbQ--;did=b0c.7331>
> Max-Forwards: 70
> From: "19172423539 <(917)%20242-3539>" <sip:19172423539 <(917)%20242-3539>
> @asterisk_address:50600>;tag=as06869a5d
> To: <sip:useragent7122 at 10.0.1.18:5068>;tag=nmv7kmpau3
> Contact: <sip:19172423539 <(917)%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=3604
> tcp_accept_no_cl=yes
> tcp_connect_timeout=5
> tcp_send_timeout=5
> tcp_rd_buf_size=16384
> tcp_keepalive=yes
> tcp_crlf_ping=yes
> tcp_keepcnt=3
> tcp_keepidle=30
> tcp_keepintvl=15
> tcp_max_connections=4096
>
> 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>
>
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>
>
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