New subject: python_exec return 0 causes script hangs; return -1 is treated like 0

15 Feb 2018


      5.1.1: if python_exec method returns 0, then the script hangs
If the python_exec method return -1, then expressions treat it as if
it returned zero.
Somewhere there seems to be an offset by 1 issue.
if (!python_exec("method")) {
   # if you return -1, the script does not hang but treated like zero
}
##################
Example 1:
class kamailio(object):
    def hello(self, msg):
        KSR.info("hello, world\n")
        return 0
Calling:  python_exec("hello")
will cause script hang
###################
Example 2:
class kamailio(object):
    def hello(self, msg):
        KSR.info("hello, world\n")
        return -1
Calling  python_exec("hello")
if (!python_exec("hello")) {
                        ## method returns -1
                        ## why did we get here?
                        xlog("L_INFO","method return zero!\n");
                }
shows INFO: <script>: method return zero!