[Freeswitch-dev] Help on switch_channel_expand_variables(switch_channel_t *channel, const char *in)

Alex To tonhudung at gmail.com
Wed Jan 20 18:10:15 PST 2010

Thanks Anthony and Rupa, it's clear now. J


Alex To


From: freeswitch-dev-bounces at lists.freeswitch.org
[mailto:freeswitch-dev-bounces at lists.freeswitch.org] On Behalf Of Anthony
Sent: Thursday, January 21, 2010 2:49 AM
To: freeswitch-dev at lists.freeswitch.org
Subject: Re: [Freeswitch-dev] Help on
switch_channel_expand_variables(switch_channel_t *channel, const char *in)


say you had 2 vars test1=foo and test2=bar

it would turn the string "${test1} ${test2}" into "foo bar"
if the returned string does not return the exact pointer that was input, it
must be freed.

On Wed, Jan 20, 2010 at 12:04 AM, Alex To <tonhudung at gmail.com> wrote:



Could somebody shed some lights on how the mentioned method works ? What
does it do exactly ? My best guess is it takes in a channel, a string and
does something to the string (escape the string ? split the string ? or
something like that? But why need a channel parameter?)


If there is already an explanation somewhere about this, please point it out
for me or possibly just tell me what configuration should I make to trigger
this method to be called. I can use debugger and figure it out by myself.


Any help would be greatly appreciated.


Thanks very much




Alex To

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Anthony Minessale II

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