[Osip] crash on multiple re-INVITEs

[KURTH Christoph]

hi,

I have encountered a problem regarding re-INVITE messages,
during a test against a snom 360 telephone.
we established a call and set it on-hold and off-hold multiple times:

 snom                         osip/eXosip
   |         INVITE
   | ---------------------------> |
   |           200 Ok             |
   | <--------------------------- |
   |         ACK                  |
   | ---------------------------> |
   |                              |
   |      re-INVITE (on-hold)     |
   | ---------------------------> |
   |           100 Trying         |
   | <--------------------------- |
   |                              |
   |      re-INVITE (off-hold)    |
   | ---------------------------> |
   |           100 Trying         |
   | <--------------------------- |
   |                              X   (eXosip crashes here !!)


We did not accept the first re-INVITE with a final response (the application
was not fast enough - or the snom too fast).

unfortunately I could not figure out, why this happens or where to fix it.
has someone detected the same problem ?
I'm also not sure, whether the snom phone acts non-RFC conform, or not.

br,
Christoph.