public virtual byte[] Receive(ws2_32.SocketFlags flag)
{
return(_Receive(flag));
}
/// <summary> send a packet to the remote server </summary>
/// <param name="payload">The bytes that you want to sent</param>
/// <returns>The length of the packet that has been sent</returns>
public virtual int SendPacket(byte[] payload, ws2_32.SocketFlags flag)
{
return(_SendPacket(payload, flag, false));
}
private unsafe byte[] _Receive(ws2_32.SocketFlags flag)
{
List <Byte> payload = new List <Byte>();
if (EnableSizeHeader)
{
int PayloadSize = 0;
byte[] xSize = Receive((uint)HeaderSize);
if (xSize.Length <= 0)
{
return(new byte[] { });
}
try
{
switch (HeaderSize)
{
case HeaderTypeSize.BYTE:
PayloadSize = xSize[0];
break;
case HeaderTypeSize.INT:
PayloadSize = BitConverter.ToInt32(xSize, 0);
break;
case HeaderTypeSize.SHORT:
PayloadSize = BitConverter.ToInt16(xSize, 0);
break;
}
}
catch (Exception ex)
{
GlobalVariables.DumpErrorLog(ex);
//Overflow exception, We have been attacked!
Disconnect();
return(new byte[] { });
}
if (PayloadSize < 0)
{
Disconnect();
return(new byte[] { });
}
//Read the whole packet
payload.AddRange(Receive((uint)PayloadSize));
if (!Connected)
{
Disconnect();
return(new byte[] { });
}
}
else
{
//Just read the data we are receiving
byte[] bytes = new byte[ReceiveBufferSize];
int recv = 0;
fixed(byte *x = bytes)
recv = ws2_32.recv(this.Handle, x, bytes.Length, (int)flag);
if (recv <= 0)
{
Disconnect();
return(new byte[] { });
}
Array.Resize(ref bytes, recv);
payload.AddRange(bytes);
}
return(payload.ToArray());
}
private unsafe int _SendPacket(byte[] payload, ws2_32.SocketFlags flag, bool async)
{
if (!Connected)
{
return(-1);
}
if (EnableSizeHeader)
{
if (HeaderSize == HeaderTypeSize.BYTE && payload.Length > 255)
{
throw new Exception("Payload cannot be bigger then 255 bytes, Recheck the HeaderSize");
}
else if (HeaderSize == HeaderTypeSize.INT && payload.Length > int.MaxValue)
{
throw new Exception("Payload cannot be bigger then " + int.MaxValue + " bytes, Recheck the HeaderSize");
}
else if (HeaderSize == HeaderTypeSize.SHORT && payload.Length > 65535)
{
throw new Exception("Payload cannot be bigger then 65535 bytes, Recheck the HeaderSize");
}
byte[] HeaderBuffer = new byte[(int)HeaderSize];
switch (HeaderSize)
{
case HeaderTypeSize.BYTE:
HeaderBuffer = BitConverter.GetBytes((byte)payload.Length);
break;
case HeaderTypeSize.INT:
HeaderBuffer = BitConverter.GetBytes((int)payload.Length);
break;
case HeaderTypeSize.SHORT:
HeaderBuffer = BitConverter.GetBytes((short)payload.Length);
break;
}
//Send header
int DataSend = 0;
fixed(byte *x = HeaderBuffer)
{
int ret = ws2_32.send(this.Handle, x, HeaderBuffer.Length, (int)flag);
if (ret <= 0)
{
Disconnect();
return(0);
}
DataSend += ret;
}
//Send our data
byte[] buffer = new byte[0];
for (uint i = 0; i < payload.Length; i += SendBufferSize)
{
if ((i + SendBufferSize) <= payload.Length)
{
buffer = new byte[SendBufferSize];
}
else
{
buffer = new byte[payload.Length - i];
}
Array.Copy(payload, i, buffer, 0, buffer.Length);
fixed(byte *x = buffer)
{
int ret = ws2_32.send(this.Handle, x, buffer.Length, (int)flag);
if (ret <= 0)
{
Disconnect();
return(0);
}
DataSend += ret;
}
}
return(DataSend);
}
else
{
fixed(byte *x = payload)
return(ws2_32.send(this.Handle, x, payload.Length, (int)flag));
}
}