public Packet(PacketCommand cmd, [CanBeNull] byte[] payload)
{
// to pass the buffer to unmanaged code, we need to memcpy it to an unmanaged buffer
var length = payload?.Length ?? 0;
var buffer = IntPtr.Zero;
try {
// payload may be null, in which case we pass nullptr to C++
if (payload != null)
{
buffer = Marshal.AllocHGlobal(length);
Marshal.Copy(payload, 0, buffer, length);
}
m_handle = NativeMethods.wirefox_packet_create((byte)cmd, buffer, new UIntPtr((uint)length));
m_cmd = cmd;
m_sender = PeerID.Invalid;
m_payload = payload;
} finally {
if (buffer != IntPtr.Zero)
{
Marshal.FreeHGlobal(buffer);
}
}
}
internal Packet(IntPtr handle)
{
m_handle = handle;
m_cmd = (PacketCommand)NativeMethods.wirefox_packet_get_cmd(handle);
m_sender = new PeerID(NativeMethods.wirefox_packet_get_sender(handle));
var dataptr = NativeMethods.wirefox_packet_get_data(handle);
if (dataptr == IntPtr.Zero)
{
// nullptr payload is allowed
m_payload = new byte[0];
}
else
{
// copy payload of correct length over to managed land
m_payload = new byte[NativeMethods.wirefox_packet_get_length(handle).ToUInt32()];
Marshal.Copy(NativeMethods.wirefox_packet_get_data(handle), m_payload, 0, m_payload.Length);
}
}
public void DisconnectImmediate(PeerID who)
{
NativeMethods.wirefox_peer_disconnect_immediate(m_handle, who);
}
public uint Send(Packet packet, PeerID recipient, PacketOptions options, PacketPriority priority = PacketPriority.MEDIUM)
{
return(NativeMethods.wirefox_peer_send(m_handle, packet.GetHandle(), recipient, options, priority, 0));
}
public void Disconnect(PeerID who, TimeSpan linger)
{
NativeMethods.wirefox_peer_disconnect(m_handle, who, (uint)linger.TotalMilliseconds);
}
public void Disconnect(PeerID who)
{
Disconnect(who, TimeSpan.FromMilliseconds(200));
}
public ulong GetStat(PeerID who, PeerStatID stat)
{
return((ulong)NativeMethods.wirefox_peer_get_stat(m_handle, who, stat));
}
public bool GetPingAvailable(PeerID who)
{
return(NativeMethods.wirefox_peer_get_ping_available(m_handle, who));
}
public int GetPing(PeerID who)
{
return((int)NativeMethods.wirefox_peer_get_ping(m_handle, who));
}