Hello,
After switching transport in pjsip endpoint from udp to tcp Asterisk can’t accept call.
ParameterName : ParameterValue
===============================================
allow_reload : true
async_operations : 1
bind : xx.xxx.xxx.xx:5060
ca_list_file :
ca_list_path :
cert_file :
cipher :
cos : 0
domain :
external_media_address :
external_signaling_address :
external_signaling_port : 0
local_net :
method : unspecified
password :
priv_key_file :
protocol : udp/tcp
require_client_cert : No
symmetric_transport : false
tos : 0
verify_client : No
verify_server : No
websocket_write_timeout : 100
On CLI only this message:
[Dec 4 09:42:17] **ERROR** [64]: **res_pjsip_session.c** : **709** **handle_incoming_sdp** : Failed to handle incoming SDP. Session has been already disconnected
Asterisk 17.0.0
Has anyone encountered a similar situation?
jcolp
December 4, 2019, 11:00am
2
What is the actual transport configuration and endpoint configuration? Why do you have allow_reload enabled? (It is STRONGLY recommended not to enable it)
pjsip.conf:
[transport-tcp]
allow_reload=yes
type=transport
protocol=tcp
bind=xx.xxx.xxx.xx:5060
[transport-udp]
allow_reload=yes
type=transport
protocol=udp
bind=xx.xxx.xxx.xx:5060
other pjsip configuration is realtime:
Endpoint: <Endpoint/CID.....................................> <State.....> <Channels.>
I/OAuth: <AuthId/UserName...........................................................>
Aor: <Aor............................................> <MaxContact>
Contact: <Aor/ContactUri..........................> <Hash....> <Status> <RTT(ms)..>
Transport: <TransportId........> <Type> <cos> <tos> <BindAddress..................>
Identify: <Identify/Endpoint.........................................................>
Match: <criteria.........................>
Channel: <ChannelId......................................> <State.....> <Time.....>
Exten: <DialedExten...........> CLCID: <ConnectedLineCID.......>
==========================================================================================
Endpoint: kamailio-dev In use 1 of inf
Aor: kamailio-aor 0
Contact: kamailio-aor/sip:xx.xxx.xxx.xx:5060 da2aa7a151 NonQual nan
Transport: transport-tcp udp 0 0 xx.xxx.xxx.xx:5060
Identify: kamailio-identify/kamailio-dev
Match: xx.xxx.xxx.xx/32
Channel: PJSIP/kamailio-dev-00000006/Echo Up 01:22:00
Exten: 999 CLCID: "" <>
ParameterName : ParameterValue
=========================================================
100rel : no
accept_multiple_sdp_answers : false
accountcode :
acl :
aggregate_mwi : true
allow : (ulaw|alaw)
allow_overlap : true
allow_subscribe : true
allow_transfer : true
aors : endpoint-aor
asymmetric_rtp_codec : false
auth :
bind_rtp_to_media_address : false
bundle : false
call_group :
callerid : <unknown>
callerid_privacy : allowed_not_screened
callerid_tag :
connected_line_method : invite
contact_acl :
context : default
cos_audio : 0
cos_video : 0
device_state_busy_at : 0
direct_media : false
direct_media_glare_mitigation : none
direct_media_method : invite
disable_direct_media_on_nat : false
dtls_auto_generate_cert : No
dtls_ca_file :
dtls_ca_path :
dtls_cert_file :
dtls_cipher :
dtls_fingerprint : SHA-256
dtls_private_key :
dtls_rekey : 0
dtls_setup : active
dtls_verify : No
dtmf_mode : rfc4733
fax_detect : false
fax_detect_timeout : 0
follow_early_media_fork : true
force_avp : false
force_rport : false
from_domain :
from_user :
g726_non_standard : false
ice_support : false
identify_by : ip
ignore_183_without_sdp : false
inband_progress : false
incoming_mwi_mailbox :
language :
mailboxes :
max_audio_streams : 1
max_video_streams : 1
media_address : xx.xx.xx.xx
media_encryption : no
media_encryption_optimistic : false
media_use_received_transport : false
message_context :
moh_passthrough : false
moh_suggest : default
mwi_from_user :
mwi_subscribe_replaces_unsolicited : no
named_call_group :
named_pickup_group :
notify_early_inuse_ringing : false
one_touch_recording : false
outbound_auth :
outbound_proxy :
pickup_group :
preferred_codec_only : false
record_off_feature : automixmon
record_on_feature : automixmon
refer_blind_progress : true
rewrite_contact : true
rpid_immediate : false
rtcp_mux : false
rtp_engine : asterisk
rtp_ipv6 : false
rtp_keepalive : 0
rtp_symmetric : false
rtp_timeout : 0
rtp_timeout_hold : 0
sdp_owner : -
sdp_session : Asterisk
send_connected_line : yes
send_diversion : false
send_pai : false
send_rpid : false
set_var :
srtp_tag_32 : false
sub_min_expiry : 0
subscribe_context :
suppress_q850_reason_headers : false
t38_udptl : false
t38_udptl_ec : none
t38_udptl_ipv6 : false
t38_udptl_maxdatagram : 0
t38_udptl_nat : false
timers : yes
timers_min_se : 90
timers_sess_expires : 1800
tone_zone :
tos_audio : 0
tos_video : 0
transport : transport-tcp
trust_connected_line : yes
trust_id_inbound : false
trust_id_outbound : false
use_avpf : false
use_ptime : false
user_eq_phone : false
voicemail_extension :
webrtc : no
jcolp
December 4, 2019, 11:25am
4
Is TCP actually being used from Kamailio? Your Contact also doesn’t appear to be set to use “;transport=tcp” to have TCP being used. If this isn’t done it’ll try to use UDP, and since you’ve forced TCP as the transport on the endpoint it’ll fail.
Generally you don’t need to specify a transport on the endpoint, just in the Contact URI.
1 Like
Thanks for help @jcolp ! Now tcp connection works.
To be honest, tcp connection didn’t solve initial issue with pickup feature in my env.
jcolp
December 5, 2019, 11:13am
6
You should create a new topic.
system
January 4, 2020, 11:14am
7
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