public string GetNextMessage()
{
int messageBytes;
int bytesRead;
int messages;
if (!Mailslot.GetMailslotInfo(_handle, IntPtr.Zero, out messageBytes,
out messages, IntPtr.Zero))
{
throw new Win32Exception();
}
if (messageBytes == Mailslot.MailslotNoMessage)
{
return(null);
}
var bBuffer = new byte[messageBytes];
if (!Mailslot.ReadFile(_handle, bBuffer, messageBytes, out bytesRead,
IntPtr.Zero) || bytesRead == 0)
{
throw new Win32Exception();
}
return(Encoding.Unicode.GetString(bBuffer));
}
public void SendMessage(string msg)
{
if (_handle == null)
{
CreateHandle();
}
int bytesWritten;
byte[] bMessage = Encoding.Unicode.GetBytes(msg);
bool succeeded = Mailslot.WriteFile(_handle, bMessage,
bMessage.Length, out bytesWritten, IntPtr.Zero);
if (!succeeded || bMessage.Length != bytesWritten)
{
if (_handle != null)
{
_handle.Close();
}
_handle = null;
throw new Win32Exception();
}
}
public MailslotServer(string name)
{
_handle = Mailslot.CreateMailslot(@"\\.\mailslot\" + name, 0, 0, IntPtr.Zero);
if (_handle.IsInvalid)
{
throw new Win32Exception();
}
}
private void CreateHandle()
{
_handle = Mailslot.CreateFile(
@"\\" + _machine + @"\mailslot\" + _name,
Mailslot.FileDesiredAccess.GenericWrite,
Mailslot.FileShareMode.FileShareRead,
IntPtr.Zero,
Mailslot.FileCreationDisposition.OpenExisting,
0,
IntPtr.Zero);
if (_handle.IsInvalid)
{
throw new Win32Exception();
}
}