I am a new user of sipx/sipxtapi.My initial experimentation has been with the
source code found here: http://scm.sipfoundry.org/rep/sipX/branches.I've been
able to download and build this source code, and as well I have built an
application module that leverages sipxtapi to make/receive calls. This code is
modeled after the two test apps ("ReceiveCall", and "Placecall") found within
the sipxtapi baseline. Within a day or two I was able to get my first
application module working. I can now place a call and receive a call from
within my application. I have tested this with a cots sip client (xlite) on the
other end of the network. My application is multi-threaded and I build on
windows xp with visual studio 2005.
Though largely successful I do have a shutdown problem with my first
application. This application deals with voice in two threads of execution. The
primary thread is the thread that will make all calls into the SIP api (for
example this is where sipxinitialize is invoked). The other thread is the GUI
front-end. This thread does not make any calls into the sipx api. I do a lot of
thread programming and do not in general have any problem with thread
management. Interstingly all i need to do in order to get my application to
crash is to call sipxinitialize in a thread of execution and then to shutdown
this thread. A crash seems to occur when the sipx code that references the
microphone/speaker references into garbage memory.
1] what is the best starting point project for a sipx/sipxtapi user? should i
use sipXecs or should i rely on an older (perhaps more mature) project such as
the one that can be found at this url:
http://scm.sipfoundry.org/rep/sipX/branches?
2] are there examples of proper startup/shutdown in a multi-threaded
environment? i am sure i'm not the only person using sipxtapi in a
multi-threaded app, so i'm looking to others for lessons learned in this regard.
Thanks in advance
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