2008/7/30 Stefano Sabatini <[EMAIL PROTECTED]>:
> On 7/30/08, Stefano Sabatini <[EMAIL PROTECTED]> wrote:
>> On Wed, Jul 30, 2008 at 10:31 AM, Stefano Sabatini
>> <[EMAIL PROTECTED]> wrote:
>>> Hi all,
>>> can you say if there is a simple way to convert a sip_t object to a char*
>>> and viceversa?
>>>
>>> For example I would like to print all the incoming SIP messages from
>>> the the event callback function.
> [...]
>
> >From a textual representation to a msg_t and to a sip_t:
> msg_data = "...";
> msg_t* msg = msg_make (sip_default_mclass(), 0, msg_data, sizeof (msg_data));
> if (!msg) {
> fprintf(stderr, "Impossible to parse message\n");
> exit(1);
> }
> sip_t* sip = sip_object(msg);
>
> Still I don't know if there exists a function which returns a textual
> representation of a message,
> there is a sip_header_as_string(home, sip) function but not one which
> prints the whole message.
Try msg_as_string()..
> Also how can I get the headers from a sip_t struct, and how can I
> iterate thrugh them?
sip_t has pointers to each header fields, e.g., sip_via is pointer to
a list of Via header fields. You can iterate through Via header fields
with a loop like this:
sip_t *sip = sip_object(sip);
sip_via_t *via;
for (via = sip->sip_via; via; via = via->v_next) {
...
}
If you want to iterate through each header field in the message, you
should start from msg_chain_head(msg) and then proceed in order, e.g.,
for (next = msg_chain_head(msg); *next; next = &(*next)->sh_next) {
sip_header_t *sh = (*next);
msg_hclass_t const *hc = sh->sh_class;
if (sip_is_via(sh) {
sip_via_t const*via = (sip_via_t *)sh;
....
}
...
}
The list of all the message components ("chain") also includes some
non-header elements, like request-line, status-line and message body.
There is also some complications with so called "list" headers like
Require, their values are combined with their first occurrence, so
headers like
Require: 100rel
Supported: timer
Require: xyzzy
will have one sip_require_t structure with tokens "100rel" and
"xyzzy", one sip_supported_t structure with "timer" and a dummy
sip_require_t structure in the chain.
--
Pekka.Pessi mail at nokia.com
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