int UDP_Socket::receive(IPaddress &ip, const void * const &data, const Uint16 &num_bytes) {
IPaddress ipaddress = {0, 0};
UDPpacket packet =
{
-1,
reinterpret_cast<Uint8 *>(const_cast<void *>(data)),
0,
num_bytes,
0,
ipaddress
};
int retval = SDLNet_UDP_Recv(sock, &packet);
if(retval == -1)
throw Socket_Closed();
else if(!retval) {
packet.address.host = 0;
packet.address.port = 0;
}
ip = packet.address;
return packet.len;
}
int TCP_Socket::receive(void * const &data, const Uint16 &num_bytes) {
int retval = check_socket();
if(retval) {
retval = SDLNet_TCP_Recv(sock, data, num_bytes);
if(retval <= 0)
throw Socket_Closed();
}
return retval;
}
void UDP_Socket::send(const IPaddress &ip, const void * const &data, const Uint16 &num_bytes) {
if(num_bytes < 8167u) {
UDPpacket packet =
{
-1,
reinterpret_cast<Uint8 *>(const_cast<void *>(data)),
num_bytes,
num_bytes,
0, // Will == -1 on error after UDP_Send, otherwise == # of bytes sent
ip
};
if(!SDLNet_UDP_Send(sock, -1, &packet))
throw Socket_Closed();
}
throw UDP_Packet_Overflow();
}
void TCP_Socket::send(const void * const &data, const Uint16 &num_bytes) {
if(SDLNet_TCP_Send(sock, const_cast<void *>(data), num_bytes) < num_bytes)
throw Socket_Closed();
}
int TCP_Socket::check_socket() {
int retval = SDLNet_CheckSockets(sockset, 0);
if(retval == -1)
throw Socket_Closed();
return retval;
}