void PacketSender::send_l2(PDU &pdu, struct sockaddr* link_addr,
uint32_t len_addr, const NetworkInterface &iface)
{
int sock = get_ether_socket(iface);
PDU::serialization_type buffer = pdu.serialize();
if(!buffer.empty()) {
#if defined(BSD) || defined(__FreeBSD_kernel__)
if(::write(sock, &buffer[0], buffer.size()) == -1)
#else
if(::sendto(sock, &buffer[0], buffer.size(), 0, link_addr, len_addr) == -1)
#endif
throw socket_write_error(make_error_string());
}
}
PDU *IPv4Stream::allocate_pdu() const {
PDU::serialization_type buffer;
buffer.reserve(total_size);
// Check if we actually have all the data we need. Otherwise return nullptr;
uint16_t expected = 0;
for(fragments_type::const_iterator it = fragments.begin(); it != fragments.end(); ++it) {
if(expected != it->offset())
return 0;
expected = static_cast<uint16_t>(it->offset() + it->payload().size());
buffer.insert(buffer.end(), it->payload().begin(), it->payload().end());
}
return Internals::pdu_from_flag(
static_cast<Constants::IP::e>(transport_proto),
buffer.empty() ? 0 : &buffer[0],
static_cast<uint32_t>(buffer.size())
);
}