// Apply the given filter it to the packet source. Only packets that match this
// filter will be captured.
func (h *Handle) ApplyFilter(filter *filter.Filter) error {
if !filter.Validate() {
return fmt.Errorf("Invalid filter")
}
h.filter = filter
return nil
}
// Apply the given filter it to the packet source. Only packets that match this
// filter will be captured.
func (h *Handle) ApplyFilter(filter *filter.Filter) error {
if !filter.Validate() {
return fmt.Errorf("Invalid filter")
}
err_str := (*C.char)(C.calloc(256, 1))
defer C.free(unsafe.Pointer(err_str))
dev_str := C.CString(h.Device)
defer C.free(unsafe.Pointer(dev_str))
err := C.pcap_setfilter(h.pcap, (*C.struct_bpf_program)(filter.Program()))
if err < 0 {
return fmt.Errorf("Could not set filter: %s", h.get_error())
}
return nil
}