HP-UX C SIP Stack Message Layer Reference Guide (February 2008)

34 HP C SIP Stack Message Layer Reference Guide
Get and Set Functions
RvSipMsgGetHeaderByTypeExt()
eOption
Specifies whether the application wishes to get only legal syntax headers, or any
header (legal and illegal headers).
hListElem
The handle to the current position in the list. Supply this value if you chose
“next” or “previous” in the location parameter. This is also an output parameter
and will be set with a link to requested header in the list.
hListElem
The handle to the current position in the list. Supply this value if you chose
“next” or “previous” in the location parameter. This is also an output parameter
and will be set with a link to requested header in the list.
RETURN VALUES
Returns the header handle as void*, or NULL if there is no header to retrieve.