/// <summary>
/// Read from UDP
/// </summary>
/// <param name="buffer"></param>
/// <param name="size"></param>
/// <returns></returns>
public unsafe uint Read(byte *buffer, uint size)
{
// We can't do this if we just connect
if (!m_ipSpecified)
{
return(0);
}
UDPBacklogEntry *entry = (UDPBacklogEntry *)m_queue.Pop();
if (entry == null)
{
return(0);
}
if (size > entry->Size)
{
size = entry->Size;
}
Memory.Memcpy(buffer, entry->Buffer, (int)size);
Heap.Free(entry);
return(size);
}
/// <summary>
/// Get size
/// </summary>
/// <returns></returns>
public unsafe uint GetSize()
{
if (!m_connected)
{
return(0);
}
UDPBacklogEntry *entry = (UDPBacklogEntry *)m_queue.Peek();
return(entry->Size);
}
/// <summary>
/// Read packet from UDP
/// </summary>
/// <param name="buffer"></param>
/// <param name="size"></param>
/// <returns></returns>
public unsafe uint ReadPacket(byte *buffer, uint size)
{
// Minimum size of 6
if (size < 6)
{
return(0);
}
UDPBacklogEntry *entry = (UDPBacklogEntry *)m_queue.Pop();
if (entry == null)
{
return(0);
}
if (size > entry->Size + sizeof(UDPPacketHeader))
{
size = entry->Size + (uint)sizeof(UDPPacketHeader);
}
uint offset = (uint)sizeof(UDPPacketHeader);
uint sizeData = size - offset;
UDPPacketHeader *packet = (UDPPacketHeader *)buffer;
packet->Size = sizeData;
Memory.Memcpy(packet->IP, entry->IP, 4);
if (sizeData > 0)
{
Memory.Memcpy(buffer + offset, entry->Buffer, (int)sizeData);
}
Heap.Free(entry);
return(size);
}
/// <summary>
/// Receive on socket
/// </summary>
/// <param name="buffer"></param>
/// <param name="size"></param>
public unsafe void Receive(byte[] ip, byte *buffer, uint size)
{
// Do not accept empty packets
if (size == 0)
{
return;
}
UDPBacklogEntry *entry = (UDPBacklogEntry *)Heap.Alloc(sizeof(UDPBacklogEntry));
if (size >= 2048)
{
size = 2048;
}
Memory.Memcpy(entry->Buffer, buffer, (int)size);
entry->Size = size;
Memory.Memcpy(entry->IP, Util.ObjectToVoidPtr(ip), 4);
m_queue.Push(entry);
}
