May 2017 - FreeSWITCH-users - FreeSWITCH Mailing Lists

TLS SIP packet tracing and visualization
by Giovanni Maruzzelli 12 May '17

12 May '17

Hello fellows, after some experimentation with various tools, I come out with a little shell tool that maybe can be useful to you too. It can only work with non-forward secrecy ciphers, obviously, and only if is started before the client do the initial TLS handshake (eg, just restart the client). Forward secrecy cannot be decrypted after fact, so don't waste effort. An example of ciphers that can be decrypted are the "AES256-SHA" openssl cipher group. You can use ssldump to check what cipher is used by serverhello. Enjoy, make it better, and share it :) #!/bin/bash # brought to you by Giovanni Maruzzelli # SERVERIP="192.168.1.150" SERVERPORT="5061" PRIVKEY="/etc/certs/privkey.pem" STDERR2DEVNULL=" 2>/dev/null " REGEX="notyet" if [ -z "$1" ]; then REGEX="\\\.*" else REGEX="$1" fi FILTER="ssl.app_data and sip matches" FILTER2="$FILTER \"$REGEX\"" FILTER3="'$FILTER2'" ARGUMENT="-i 1 -Y $FILTER3 -E header=y -T fields -e frame.number -e frame.time -e frame.time_delta_displayed -e ip.src -e ip.dst -e sip.Status-Line -e sip.Request-Line -e sip.msg_hdr -l -d tcp.port\=\=5061,sip -o \"ssl.keys_list: $SERVERIP,$SERVERPORT,sip,$PRIVKEY\" $STDERR2DEVNULL | sed -u 's/\t/\n/g' | sed -u '/^$/d' | sed -u 's/^[0-9]*$/\n==&==============================/g'" echo "" echo "NB: if it do not works, edit script so that STDERR2DEVNULL=\" \" and try again" echo "" echo "NB: remember to quote and escape match patterns, using triple slash" echo " eg, for matching 1010(a)pbx.example.com, use \"1010(a)pbx.example.com \"" echo " eg, for matching anything, use \"\\\\\\.*\"" echo " eg, for matching *98, use \"\\\\\\*98\"" echo "USAGE: $0 \"\\\\\\*98(a)pbx.example.com\"" echo "" case "$1" in -help|--help|?) exit 0 ;; *) echo "THIS TIME WE'RE DOING:" echo "tshark $ARGUMENT" echo "" bash -c "tshark $ARGUMENT" ;; esac -- Sincerely, Giovanni Maruzzelli OpenTelecom.IT cell: +39 347 266 56 18

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Voicemail not detecting DTMF
by Ketan Kothari 12 May '17

12 May '17

Hello, I'm trying to call voicemail box number 7777 to hear the recorded messages if any, and its asking for password but when enter digit its not showing in freeswitch logs after some seconds its again asking for password. https://pastebin.com/ypZFvXD2 after the above log if i press digit '1' i should get something like this, [DEBUG] switch_rtp.c:6927 RTP RECV DTMF 1:960 But i am getting nothing. However at the time of leaving the voicemail, the DTMF is detected fine. what could be the issue?

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mod_distribution feature
by Antonio Silva 12 May '17

12 May '17

Hi all, Just found mod_distribution and is pretty cool feature to have. Right now it distributes calls to gateways in a weighted round-robin fashion, could it be cool to have /Weighted Random Distribution. /i found this paper explaining an implementation in python: https://www.electricmonk.nl/log/2009/12/23/weighted-random-distribution/ it could be ported to mod_distributor. / /What you guys think about it? -- Saludos / Regards / Cumprimentos, António silva

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STRP
by David Villasmil 12 May '17

12 May '17

Hello Guys, So i've got this scenario where i'm receving in TCP+SRTP(opus) and I need to send to the b-leg in TCP+STRP(PCMA)... i've enabled: <action application="bridge" data="{sip_secure_media=true,sdp_secure_savp_only=true,absolute_codec_string=^^:PCMA:PCMU}sofia/external/${destination_number}@myserver;transport=tcp" /> But the sdp is being went without srtp, what am I missing? Regards, David Villasmil email: david.villasmil.work(a)gmail.com phone: +34669448337 ᐧ

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Changing audio DTLS state from HANDSHAKE to FAIL issue
by sachin 11 May '17

11 May '17

Hello All,I am trying to setup the Webrtc call between 2 SIPML5 client. I am using FreeSWITCH Version 1.6.14 on Windows. I am using internal LAN.The clients are getting registered over wss. I have created self signed certificates.  In var.xml I have set the codecs setting as follows  <X-PRE-PROCESS cmd="set" data="global_codec_prefs=PCMU,PCMA">  <X-PRE-PROCESS cmd="set" data="outbound_codec_prefs=PCMU,PCMA">I am able to establish the call and there is 2 way voice when I call from Sipmpl5 to Linphone and it works. But when I call from Linphone to Firefox (Simpl5) then the call is not getting established and I am getting following error2017-05-04 11:29:04.543434 [ERR] switch_rtp.c:2907 audio Handshake failure 12017-05-04 11:29:04.543434 [INFO] switch_rtp.c:2908 Changing audio DTLS state from HANDSHAKE to FAIL2017-05-04 11:29:04.543434 [NOTICE] switch_rtp.c:2889 Hangup sofia/internal/sip:1001@df7jal23ls0d.invalid [CS_EXCHANGE_MEDIA] [DESTINATION_OUT_OF_ORDER]My setup is as followsSIPML5 (FireFox browser 53.0)<-----> FS (v1.5)(Windows) <----> LinphoneI am attaching the logs for the reference.fs-logleve9.txt : Debug trace with loglevel =9fs-sip-trace.txt : Sip tracePlease let me know what could the issue and pointers to resolve the same.Thanks and RegardsSD

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Freeswitch Packet Fragmentation issue
by Charles Bujold 11 May '17

11 May '17

The only codec is PCMU, nothing else listed.

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Why two ilbc(ilbc2) RPMs in CentOS 7 repos
by Richard Chan 11 May '17

11 May '17

Hi, I was wondering what the purpose is of having two RPMs for ilbc, named ilbc and ilbc2. Does the build system check for both? In Fedora (not sure for CentOS) there is an incompatible RPM so perhaps to avoid a package name clash? -- Richard Chan

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Setting up webrtc certificates
by Ravi sanyal 11 May '17

11 May '17

Hello, I'm following the guide on confluence to setup webrtc and testing the various ports for certificate information. I noticed that i need to copy the ca.crt file into the certs folder, however, i used letsencrypt over the self-signed program that was being used for the example. What is the equivalent of this file in letsencrypt? Nathan -- *Virtual Guard Ltd* *info(a)virtualguard.co.nz <info(a)virtualguard.co.nz>*

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Passing variables directly in mod_lcr
by Jakub Wojewoda 11 May '17

11 May '17

Anyone knows how to import custom variable in mod_lcr? I've got custom query with custom variable "custom_var" in lcr.xml, and export it in export_fields. I can see it in ${lcr_auto_route} as[custom_variable=xxxx ...]gateway when I call <action application="lcr" data="1234"/>. But I want to see it as ${custom_var}. Any ideas? Regards, Jakub Wojewoda

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BFCP screen sharing
by Andres Gomez 10 May '17

10 May '17

Hi Friends can I use bfcp screen sharing in videoconferences? How can i use ? Regards Carlos.

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