sdp_find_attribute(3COMMPUTIL) Communication Protocol Parser Utilities Library Functions sdp_find_attribute(3COMMPUTIL)
NAME
sdp_find_attribute - find the attribute from the attribute list
SYNOPSIS
cc [ flag...] file... -lcommputil [ library...]
#include <sdp.h>
sdp_attr_t *sdp_find_attribute(sdp_attr_t *attr, const char *name);
DESCRIPTION
The sdp_find_attribute() function searches the attribute list attr for the specified attribute name. If the attribute is found it returns
the pointer to that attribute. Otherwise it returns NULL.
RETURN VALUES
The sdp_find_attribute() function returns the attribute (sdp_attr_t *) on success and NULL when the search fails or when mandatory input
parameters are NULL.
EXAMPLES
Example 1 An (incomplete) SDP description that contains one media section: audio.
m=audio 49170 RTP/AVP 0 8
a=rtpmap:0 PCMU/8000
a=rtpmap:8 PCMA/8000
a=sendonly
a=ptime:10000
a=maxptime:20000
/*
* Assuming that above description is parsed using sdp_parse and that
* the parsed structure is in "session" sdp_session_t structure.
*/
sdp_attr_t *ptime;
sdp_attr_t *max_ptime;
sdp_media_t *media = session->s_media;
if ((ptime = sdp_find_attribute(media->m_attr, "ptime")) == NULL)
/* ptime attribute not present */
else if((max_ptime = sdp_find_attribute(media->m_attr,
"maxptime")) == NULL)
/* max_ptime attribute not present */
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Interface Stability |Committed |
+-----------------------------+-----------------------------+
|MT-Level |Safe |
+-----------------------------+-----------------------------+
SEE ALSO
libcommputil(3LIB), sdp_parse(3COMMPUTIL), attributes(5)
SunOS 5.11 12 Oct 2007 sdp_find_attribute(3COMMPUTIL)