Deleting an Attribute From the SDP Media Structure

The sdp_delete_attribute() function deletes the attribute specified by the attr parameter from the media list. This function finds the specified attribute by calling either the sdp_find_media_rtpmap() function or the sdp_find_attribute() function. This function frees the memory that is allocated to the attribute structure after deleting the attribute.

Return Values: The sdp_delete_attribute() function returns 0 when the function completes successfully. When the session argument is NULL or mandatory arguments do not exist, the function returns EINVAL. The value of errno does not change in the event of an error.