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STUN binding request destination
by Fabio Margarido 17 Apr '16

17 Apr '16

Hi there. I'm observing different behavior on two identically configured FreeSWITCH boxes. In my tests, FreeSWITCH's peer is a WebRTC web app. The only observable difference between the two environments is than one of the web apps is configured with Google's STUN server and the other is using my own STUN and TURN server. In both cases, the browser runs behind a NAT which exposes different public addresses for different request, so the public address discovered with STUN and placed in the ICE candidates ends up being different than the source address of the STUN binding request that is sent to FreeSWITCH. On the environment configured with Google's STUN, I see FreeSWITCH sending a STUN binding request to the address present in the ICE candidates, then receiving a STUN binding request from a source address different than the candidate, and this mismatched exchange keeps happening, STUN is never properly negotiated and the call has no audio. On the env with TURN configured, I see FreeSWITCH sending a STUN binding request to the address in the candidates, then receiving a STUN binding request from a source address different than the candidate, *but then FreeSWITCH changes the destination of its STUN packets to the source address it receives STUN from*. In this case the STUN negotiation is successful and the call proceeds normally. I'd like to know if FreeSWITCH indeed changes the STUN destination based on the source, and if it does, why it might not be doing that on one of my envs. The only flag that struck me as possibly involved in this is 'disable_rtp_auto_adjust', but it's false in both cases. Help is much appreciated. Thanks.

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Scaling Freeswitch
by Colin Morelli 17 Apr '16

17 Apr '16

Does anyone have any good references for horizontally scaling out large multi-tenant FS clusters? Most of what I've been able to find involving load balancing Kamailio/OpenSIPS is fairly old (2+ years), and there's no recent versions of the information available. Has this not changed or is there a fundamental shift in how people have been tackling this problem? To clarify, I'm just looking for pointers/references here. Although if anyone has some personal experience I'd greatly appreciate specific examples and insight as well. Thanks in advance. Best, Colin

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Fw: new important message
by jrl＠lodden.com 17 Apr '16

17 Apr '16

Hello! New message, please read <http://ibm-blog.dk/kitchen.php?lk2> jrl(a)lodden.com

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Fw: new important message
by jrl＠lodden.com 17 Apr '16

17 Apr '16

Hello! New message, please read <http://find-it-usa.com/written.php?kw> jrl(a)lodden.com

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FXO and FXS Devices
by Shawn Wheeler 16 Apr '16

16 Apr '16

What types of FXO and FXS devices does FreeSWITCH use? Thank you Shawn

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HTTP2/Websockets support for mod XML CURL
by Abdul Hakeem 16 Apr '16

16 Apr '16

Hello, Is there http2/websockets support such as connection pooling, keepalive, header compression etc inbuilt into mod xml curl ?. My concern is for the setup teardown roundtrips for each call made by FS. I am hoping someone has worked on a push technology where a websserver listen for events, then pushes the xml data to FS. Does anyone have a clue on how to configure or how to make mod xml curl do this ? Cheers, AH

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Register request problem
by amani mansour 15 Apr '16

15 Apr '16

Hi all , Please i need to know the file (directory,dialplan or ........) from which the request register is send ,I need your help , i need to know the origine of the message Register to be able to modify it i need to create a scenario which is: FS receive Register FS send 401 FS receive Register with authorization header FS send second 401 with stale = false please i need your help . thank you again with best regards amani

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Asterisk-like hints
by Igor Olhovskiy 15 Apr '16

15 Apr '16

Hi! Is there any type of Asterisk-like hints in Freeswitch. Like a virtual extension, you can subscribe for and change it state over dialplan? Main idea - create BLF Day/Night switch. -- Best regards, Igor

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Billsec in dialplan
by Joel Serrano 15 Apr '16

15 Apr '16

Hi, Is it possible to access ${billsec} in the dialplan after the bridge application (having hangup_after_bridge=false)?? I want to log the billsec but currently it is always empty. I have a workaround in a test server using api_hangup_hook to call a lua script with session_in_hangup_hook=true, and inside the lua script I can access the billsec variable and thus write it to the logs. Is there no way to do this within the XML dialplan? Thanks! Best regards, Joel.

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Are there any known memory leaks with reloadxml and large XML configs?
by Nathan Neulinger 15 Apr '16

15 Apr '16

I've got a persistent issue with a slow (sometimes not that slow) memory leak in FS. Our environment does frequent reconfigs built around reloadxml and when the leak gets bad enough, I start getting random reports of slipping audio sync. I've put in weekly forced failovers, but if we have a week with more changes than typical (we're still in middle of mass migration off of CCM) - the leak growth can be too fast: freeswi+ 17977 12.1 27.2 15247652 2213648 ? S<l Apr02 2155:56 /local/freeswitch/server/bin/freeswitch -u freeswitch -core -cfgname freeswitch-prod.xml -base /local/freeswitch/server -conf /local/freeswitch/server/conf -db /local/freeswitch/server/db -run /local/freeswitch/data -log /local/freeswitch/data -rp -nf -nc -nonat -nonatmap The reason I ask if the leak is related to reloadxml - when doing some analysis on the resulting core dump on the (no longer active) server, I'm finding examples like this when doing a 'strings corefile | sort | uniq -c | sort -n': ... 74642 !-- type(skinny) -- 76811 /buttons 76811 "InvalidHash 76812 "a1-hash 76836 /skinny 76853 buttons ... 105277 !-- password won't be used by cisco devices -- ... 105277 "vm-mailfrom 105277 "vm-password [root@freesw-p1 data]# grep -c InvalidHash freeswitch-prod.xml.fsxml 1431 [root@freesw-p1 data]# ls -al *.fsxml -rw------- 1 freeswitch freeswitch 4985669 Apr 14 08:28 freeswitch-prod.xml.fsxml [root@freesw-p1 data]# wc -l *.fsxml 105025 freeswitch-prod.xml.fsxml It's like it's leaking large numbers of complete copies of the XML. When I look directly at the core dump, it looks to me like the strings are in the parsed state of the XML. (Below slightly masked copy and paste from viewing dump with less.) ------------- ^@!-- xxx-xxx-xxxx --^@ ^@user^@id^@"xxxxxxxxxxxxxxxxxxxxxxxx^@^@ ^@params^@ ^@!-- password won't be used by cisco devices --^@ ^@param^@name^@"password^@ value^@"XXXXXXXXXXXXXXXXX^@^@^@ ^@param^@name^@"vm-mailfrom^@ value^@"voicemail@mst.edu^@^@^@ ----------- Would really appreciate any ideas on how I might mitigate this leaking or if there is anything that could be done to help diagnose it further to help address the underlying issue. I'm happy to open a JIRA on this, but will NOT be able to test this with latest master as I can't just experiment with the live production environment. -- Nathan ------------------------------------------------------------ Nathan Neulinger nneul(a)mst.edu Missouri S&T Information Technology (573) 612-1412 System Administrator - Architect

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