#include "VpnPeer.hpp"
#include "UdpVpn.hpp"

#include <cstdint>
#include <cstring>
#include <functional>

VpnPeer::VpnPeer(UdpVpn* vpn, const sockaddr_in6& ext_addr,
        const in6_addr& int_addr)
    : _vpn(vpn), _ext_addr(ext_addr), _int_addr(int_addr), _next_seqno(0)
{}

void VpnPeer::set_int_addr(const in6_addr& int_addr) {
    memcpy(&_int_addr, &int_addr, sizeof(_int_addr));
}

size_t VpnPeer::write(const char* data, size_t len) {
    ssize_t nsent;

    nsent = sendto(_vpn->get_socket_fd(), data, len, MSG_CONFIRM,
            (const struct sockaddr*) &_ext_addr, sizeof(_ext_addr));
    if(nsent < 0)
        throw NetError("Could not send UDP packet", errno, true);

    return (size_t) nsent;
}

size_t VpnPeer::write(const VpnPacket& packet) {
    return write(packet.get_data(), packet.get_data_size());
}