private int ReceivePinned(IntPtr ptr, int length)
{
int bytesReceived = SocketImports.recv(Handle, ptr, length, 0);
if (bytesReceived < 0)
{
var error = SocketImports.WSAGetLastError();
throw new Exception(String.Format("receive failed with {0}", error));
}
return(bytesReceived);
}
private unsafe int SendPinned(IntPtr buffer, int length)
{
int bytesSent = SocketImports.send(_handle, buffer, length, 0);
if (bytesSent == SocketImports.SOCKET_ERROR)
{
var error = SocketImports.WSAGetLastError();
throw new Exception(String.Format("send failed with {0}", error));
}
return(bytesSent);
}
public TcpConnection Accept()
{
IntPtr accepted = SocketImports.accept(_handle, IntPtr.Zero, 0);
if (accepted == new IntPtr(-1))
{
var error = SocketImports.WSAGetLastError();
SocketImports.WSACleanup();
throw new Exception(String.Format("listen failed with {0}", error));
}
return(new TcpConnection(accepted));
}
internal int Receive(Span <byte> buffer)
{
unsafe
{
IntPtr ptr = new IntPtr(buffer.UnsafePointer);
int bytesReceived = SocketImports.recv(Handle, ptr, buffer.Length, 0);
if (bytesReceived < 0)
{
var error = SocketImports.WSAGetLastError();
throw new Exception(String.Format("receive failed with {0}", error));
}
return(bytesReceived);
}
}
public int Send(Span <byte> bytes)
{
unsafe
{
IntPtr ptr = new IntPtr(bytes.UnsafePointer);
int bytesSent = SocketImports.send(_handle, ptr, bytes.Length, 0);
if (bytesSent == SocketImports.SOCKET_ERROR)
{
var error = SocketImports.WSAGetLastError();
throw new Exception(String.Format("send failed with {0}", error));
}
return(bytesSent);
}
}
public int Send(byte[] bytes, int count)
{
unsafe
{
fixed(byte *buffer = bytes)
{
IntPtr ptr = new IntPtr(buffer);
int bytesSent = SocketImports.send(_handle, ptr, count, 0);
if (bytesSent == SocketImports.SOCKET_ERROR)
{
var error = SocketImports.WSAGetLastError();
throw new Exception(String.Format("send failed with {0}", error));
}
return(bytesSent);
}
}
}
public int Receive(byte[] bytes)
{
unsafe
{
fixed(byte *buffer = bytes)
{
IntPtr ptr = new IntPtr(buffer);
int bytesReceived = SocketImports.recv(Handle, ptr, bytes.Length, 0);
if (bytesReceived < 0)
{
var error = SocketImports.WSAGetLastError();
throw new Exception(String.Format("receive failed with {0}", error));
}
return(bytesReceived);
}
}
}
public TcpServer()
{
var version = new TcpServer.Version(2, 2);
WSDATA data;
int result = SocketImports.WSAStartup((short)version.Raw, out data);
if (result != 0)
{
var error = SocketImports.WSAGetLastError();
throw new Exception(String.Format("ERROR: WSAStartup returned {0}", error));
}
_handle = SocketImports.socket(ADDRESS_FAMILIES.AF_INET, SOCKET_TYPE.SOCK_STREAM, PROTOCOL.IPPROTO_TCP);
if (_handle == IntPtr.Zero)
{
var error = SocketImports.WSAGetLastError();
SocketImports.WSACleanup();
throw new Exception(String.Format("ERROR: socket returned {0}", error));
}
}
private void Start(ushort port, byte address1, byte address2, byte address3, byte address4)
{
// BIND
in_addr inAddress = new in_addr();
inAddress.s_b1 = address1;
inAddress.s_b2 = address2;
inAddress.s_b3 = address3;
inAddress.s_b4 = address4;
sockaddr_in sa = new sockaddr_in();
sa.sin_family = ADDRESS_FAMILIES.AF_INET;
sa.sin_port = SocketImports.htons(port);
sa.sin_addr = inAddress;
int result;
unsafe
{
var size = sizeof(sockaddr_in);
result = SocketImports.bind(_handle, ref sa, size);
}
if (result == SocketImports.SOCKET_ERROR)
{
SocketImports.WSACleanup();
throw new Exception("bind failed");
}
// LISTEN
result = SocketImports.listen(_handle, 10);
if (result == SocketImports.SOCKET_ERROR)
{
SocketImports.WSACleanup();
throw new Exception("listen failed");
}
}
public void Stop()
{
SocketImports.WSACleanup();
}
public void Close()
{
SocketImports.closesocket(_handle);
}
