[Freeswitch-users] FreeSWITCH not replying to SIP INVITE

Sat May 11 19:31:45 MSD 2013

Cal,

Thanks for your response. 

I will perform as many of those tests as I can, but while I'm doing that I
need to clarify my situation. On re-reading my original post I realise I
have not been clear.

.         My FS is running on Windows as a service.

.         FS is running on the same virtual host as the automated call
handling application.

.         FS does not stop responding completely but only to SIP INVITE from
the draytel service

.         When FS is in this state I can still call the automated call
handling application using a soft phone on my LAN.

.         When FS is in this state I do not see any log output from FS when
the draytel service sends a SIP INVITE.

I hope that is more clear, please let me know if any of the above alters
your thinking. 

I will attempt to work through your suggestions.

Chris.

From: freeswitch-users-bounces at lists.freeswitch.org
[mailto:freeswitch-users-bounces at lists.freeswitch.org] On Behalf Of Cal
Leeming [Simplicity Media Ltd]
Sent: 11 May 2013 12:58
To: FreeSWITCH Users Help
Subject: Re: [Freeswitch-users] FreeSWITCH not replying to SIP INVITE

Hi Chris,

There is a couple of things you can do here to determine what is happening.

First, make sure you are running the latest freeswitch stable release.
Enable console logging and set the log level to debug (console loglevel
debug) iirc, Next, see if you are able to type 'status' into the CLI after
it has stopped responding, and make sure it outputs something. Perform a
test to see how long it takes for the freeswitch instance to stop
responding. Copy all the log entries from the point where it started, to the
point where it stopped responding, then attach and send the file to this
list. 

Once the fs instance has stopped responding, can you please try and
construct a SIP packet and send it manually to the server from the local
host of the server. You can use sendip to do this, by following the
instructions at [1]. Once you send the packet, check to see if it is
received by fs. 

If no packet is being received even when sending from localhost, run
"netstat -inp | grep LISTEN | SIPPORTHERE", replacing SIPPORTHERE with the
port you are running sip on fs. Ensure that the only entry for udp is th fs
instance, and nothing else. For a slightly more deeper approach, attach an
strafe to the fs instance, you can do this by looking in the process list
for the fs instance, then typing "strafe -ifq -p PIDHERE" replacing PIDHERE
with the pid of your fs instance. Attempt to send a call to fs, ensure the
packet arrives through wireshark, and see if the packet appears in the
strace (this is a really brutal way of debugging sometimes, it doesn't offer
all the answers but can give you a bit of an X-ray as to what is going on).

Also ensure you eliminate any possible outside interference, such as switch
gear or routing equipment.. If possible, connect the windows server and the
fs instance directly together, bypassing anything in between. Ensure you
also disable any local firewall on the fs server, I.e. iptables.

This should hopefully give you a nudge in the right direction to determine
where this problem is happening.

Hope this helps!

Cal

ps) typed on my ipad, sorry for any spelling mistakes

[1]
http://www.moythreads.com/wordpress/2012/03/15/sending-udp-packets-from-the-
command-line/

On Saturday, May 11, 2013, Christopher Hall wrote:

Steve,

Thanks for your response, I have tried with global siptrace turned on and I
see absolutely nothing when I make the call, the SIP INVITE messages are
sent to the FreeSWITCH host machine as seen using WireShark running on that
host.

Chris.

From: freeswitch-users-bounces at lists.freeswitch.org
<javascript:_e(%7b%7d,%20'cvml',%20'freeswitch-users-bounces at lists.freeswitc
h.org');>  [mailto:freeswitch-users-bounces at lists.freeswitch.org
<javascript:_e(%7b%7d,%20'cvml',%20'freeswitch-users-bounces at lists.freeswitc
h.org');> ] On Behalf Of Steven Ayre
Sent: 10 May 2013 20:01
To: FreeSWITCH Users Help
Subject: Re: [Freeswitch-users] FreeSWITCH not replying to SIP INVITE

Try enabling the sip trace when it happens to see if FS receives the
packets:

sofia global siptrace on

Steve

On 10 May 2013, at 17:03, "Christopher Hall" <chris.hall at vividapps.co.uk
<javascript:_e(%7b%7d,%20'cvml',%20'chris.hall at vividapps.co.uk');> > wrote:

Hi,

I'm new to FreeSWITCH lists and I'm not sure if this is the correct list for
my post, any help will be much appreciated.

I have a FreeSWITCH server configured to connect to a Draytel (draytel.org)
SIP service. This works correctly and I can dial in and out using the
service. 

I have an application running on a Windows Server that interfaces using
event socket to the FreeSWITCH server. The intended use is that calls
dialling in through the draytel service are automatically handled by this
application. Again this works correctly.

However, after a period of time which does not yet appear to be
deterministic the FreeSWITCH server stops responding to INVITE requests from
the draytel server. The FreeSWITCH server can still respond as I can dial
using a local network VOIP phone and the application handles that call, but
on the draytel connection there is no response.

When FreeSWITCH stops responding I see absolutely nothing in the output
logging information. I have run WireShark on the server that is running
FreeSWITCH and I can see SIP INVITE requests being sent from draytel to the
FreeSWITCH host but I don't see any kind of response.

Help!

Thanks

Chris.

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