Originating a call from lua with rudimentary error checking

25 Jun 2009

      ...
...
What's the recommended way to check if the session constructor was
successful (i.e. the number could be dialed)?
...
check that s is nil.
Doesn't work ... s is never nil.  Type shows it as userdata
even if Session failed.  Specifically my test was:

  local s = freeswitch.Session (
              "{ignore_early_media=true,origination_caller_id_name=" ..
               caller .. "}loopback/" .. destination .. "/default/XML")

  stream:write (type(s))

  if s == nil then
    stream:write ("-ERR call failed\n")
    return
  end

and I dialed an unreachable number.
...
and that s.ready() is true
Checking s.ready() results in:

  [ERR] freeswitch_lua.cpp:102 session is not initalized

if Session failed.

What I'm looking for is a way to try to originate a call which doesn't
throw ERR messages if the attempt fails.

Explicitly calling session.originate seems to allow you to check if
the call was successful ... is there a particular reason it's discouraged?

I'm happy to avoid it if a better approach is available, however I'm
having trouble finding one.

-- John
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John Wehle

Anthony Minessale

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