Deleting Fields From the SDP Media Structure
int sdp_delete_all_media_field(sdp_media_t *media, const char field);The sdp_delete_all_media_field() function deletes all occurrences of the SDP field that is specified by the field parameter from the SDP media structure.
Return Values: The sdp_delete_all_media_field() function returns 0 when the function completes successfully. When the session argument is NULL or the field type is unknown, the function returns EINVAL. The value of errno does not change in the event of an error.
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