[Users] choosing transport according to message size

[JF]

Thanks, this did the trick! I had to add msg:len checks whenever
t_relay is called. When incoming request is larger than X (e.g. 1300)
bytes we force sending over TCP so that no UDP fragmentation occurs.
Wouldn't it make sense to handle this automatically inside t_relay? or
via a modparam such as "force_tcp_size_limit"...

JF

On 5/11/06, Bogdan-Andrei Iancu <bogdan at voice-system.ro> wrote:
> an alternative will be just to append the "transport=tcp" parameter to
> RURI or DST_URI  if you do not want to change the RURI.
>     see http://openser.org/docs/modules/1.1.x/uri.html#AEN118
>
> regards,
> bogdan
>
> JF wrote:
>
> > Also, we cannot use the t_relay() function with no params if we want
> > to force transport proto, we have to use
> > t_relay("[proto:]host[:port]"), and specify a host in the script. Am I
> > right? Is there another way to force the proto?
> >
> > Thanks in advance.
> >
> > JF
> >
> > On 5/11/06, JF <jfkavaka at gmail.com> wrote:
> >
> >> Thanks for your answer.
> >>
> >> This is a real problem when there are several SIP hops adding Vias and
> >> Record-Routes, especially with INVITEs carrying SDPs as large as 700
> >> bytes... Messages easily grow bigger than the MTU.
> >> Is there a recommended way of handling this using openser? Anyone else
> >> facing this kind of problems? The safest way is to use always TCP...
> >>
> >> JF
> >>
> >> On 5/10/06, Bogdan-Andrei Iancu <bogdan at voice-system.ro> wrote:
> >> > Hi,
> >> >
> >> > no, there is no way to figure out the size of the outgoing package.
> >> The
> >> > only automatic protocol selection is via NSPTR records (if the target
> >> > has such records) - please see the SIP location for this.
> >> >
> >> > also you can choose the proto via the script.
> >> >
> >> > regards,
> >> > bogdan
> >> >
> >> > JF wrote:
> >> >
> >> > > Hi all,
> >> > >
> >> > > Is there any function in openser that selects the transport protocol
> >> > > (TCP or UDP) according to the message size? E.g. if the message
> >> going
> >> > > out is bigger than MTU, use TCP... or does the script writer have to
> >> > > take this into account every time a relaying function is called?
> >> > > Also, in this second case, is the actual outgoing message size
> >> > > available in the script (i.e. after lumps are applied)?
> >> > >
> >> > > Thanks in advance,
> >> > >
> >> > > JF
> >> > >
> >> > > _______________________________________________
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> >> > > Users at openser.org
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> >> > >
> >> > >
> >> >
> >> >
> >>
>
>