_sip_find_and_copy_header
if (_sip_find_and_copy_header(_sip_request, new_msg, SIP_FROM,
if (_sip_find_and_copy_header(_sip_request, new_msg, SIP_TO,
if (_sip_find_and_copy_header(_sip_request, new_msg,
if (_sip_find_and_copy_header(_sip_request, new_msg, SIP_CALL_ID, NULL,
if (_sip_find_and_copy_header(_sip_request, new_msg, SIP_CSEQ, NULL,
if ((ret = _sip_find_and_copy_header(_request, _ack_msg, SIP_VIA,
(void) _sip_find_and_copy_header(_request, _ack_msg,
if ((ret = _sip_find_and_copy_header(_response, _ack_msg, SIP_TO,
if ((ret = _sip_find_and_copy_header(_request, _ack_msg, SIP_FROM,
if ((ret = _sip_find_and_copy_header(_request, _ack_msg, SIP_CALL_ID,
if ((ret = _sip_find_and_copy_header(_response, _ack_msg, SIP_TO,
if ((ret = _sip_find_and_copy_header(_response, _ack_msg, SIP_FROM,
if ((ret = _sip_find_and_copy_header(_response, _ack_msg, SIP_CALL_ID,
if ((ret = _sip_find_and_copy_header(_response, _ack_msg,
extern int _sip_find_and_copy_header(_sip_msg_t *, _sip_msg_t *,
ret = _sip_find_and_copy_header(_old_msg, _new_msg, header_name, param,