Hi guys,
When I am using pjsip, I encounter the following problems:
I coded a simple test application using the default config for ua, media,
log and register with a sip server.
But it got runtime error when OPTIONS message received from the server.
Root cause:
Here is the error happened.
*in SDP.c*
PJ_DEF(pj_status_t) pjmedia_sdp_rtpmap_to_attr(pj_pool_t *pool,
const pjmedia_sdp_rtpmap
*rtpmap,
pjmedia_sdp_attr **p_attr)
{
pjmedia_sdp_attr *attr;
char tempbuf[128];
int len;
/* Check arguments. */
PJ_ASSERT_RETURN(pool && rtpmap && p_attr, PJ_EINVAL);
/* Check that mandatory attributes are specified. */
PJ_ASSERT_RETURN(rtpmap->enc_name.slen && rtpmap->clock_rate,
PJMEDIA_SDP_EINRTPMAP);
attr = PJ_POOL_ALLOC_T(pool, pjmedia_sdp_attr);
PJ_ASSERT_RETURN(attr != NULL, PJ_ENOMEM);
attr->name.ptr = "rtpmap";
attr->name.slen = 6;
/* Format: ":pt enc_name/clock_rate[/param]" */
* len = pj_ansi_snprintf(tempbuf, sizeof(tempbuf),
"%.*s %.*s/%u%s%.*s",
(int)rtpmap->pt.slen,
rtpmap->pt.ptr,
(int)rtpmap->enc_name.slen,
rtpmap->enc_name.ptr,
rtpmap->clock_rate,
(rtpmap->param.slen ? "/" : ""),
(int)rtpmap->param.slen,
rtpmap->param.ptr);*
if (len < 1 || len > (int)sizeof(tempbuf))
return PJMEDIA_SDP_ERTPMAPTOOLONG;
attr->value.slen = len;
attr->value.ptr = (char*) pj_pool_alloc(pool, attr->value.slen+1);
pj_memcpy(attr->value.ptr, tempbuf, attr->value.slen+1);
*p_attr = attr;
return PJ_SUCCESS;
}
The bold fonts above got error if *rtpmap->param.slen = 0 and
**rtpmap->param.ptr
can not be read.
My question is where I can set the value of the **rtpmap->param? Is it
must-doing? Or this is a defect that it should check the slen for string and
do not get the string if its len is zero.*
Your reply is highly appreciate!!
--
Thanks & Best Regards!
Email:rashaguo at gmail.com <Email%3Arashaguo at gmail.com>
MSN:ra8310abc at hotmail.com <MSN%3Ara8310abc at hotmail.com>
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