[Freeswitch-users] FreeSWITCH not replying to SIP INVITE

[Steven Ayre]

Run 'netstat -anp | grep freeswitch' and see whether FS is still listening
on those ports. Also try restarting sofia / freeswitch to see if that helps.

Cal's 'grep LISTEN' command will only show the TCP ports, if SIP arrives on
UDP those ports will appear with the above and it'll show all ports
(that'll include RTP ports for active calls, but given the problem I'm
guessing there won't be any/many).

If restarting FreeSWITCH doesn't help and only a reboot seems to help, it
would match a bug I have seen in iptables before. Try unloading the SIP
conntrack module and allow all packets into your server (ie disable the
firewall) and see if they start appearing. I have seen that module randomly
start blocking all packets from getting through the firewall but never
found why (moving to stateless and avoiding the conntrack module stopped
it). That was on an old 2.6 kernel so hopefully isn't present in newer
kernels.

If just restarting freeswitch helps that's not iptables. Trying to
reproduce it on the very latest version of FreeSWITCH would be a good start.

-Steve


On 11 May 2013 09:24, Christopher Hall <chris.hall at vividapps.co.uk> 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 [mailto:
> freeswitch-users-bounces at lists.freeswitch.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>
> 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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> http://www.freeswitchsolutions.com
>
> 
> 
>
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>
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> http://www.freeswitchsolutions.com
>
> 
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>
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