/// <summary>
/// Ping the server to test the connection to the server and to
/// see if the server is still responding.
/// </summary>
/// <param name = "text">text to send</param>
/// <returns>Text returned by server (must be the same as the input text)</returns>
public string Echo(string text)
{
lock (this)
{
if (Debug.DebugOn)
Debug.WriteLine(Debug.Info, "ping (SMB_COM_ECHO)");
// for now we only support 0 or 1
int echos = 1;
SetupSmbMessage(fMsg, SmbMessage.SMB_COM_ECHO);
/*
UCHAR WordCount; Count of parameter words = 1
USHORT EchoCount; Number of times to echo data back
USHORT ByteCount; Count of data bytes; min = 1
UCHAR Buffer[1]; Data to echo
*/
// Set WordCount
fMsg.setWordCount(1);
// Set echo count
fMsg.setShortParameterAt(0, echos);
var data = new MarshalBuffer(text.Length + 10);
int pos = 0;
pos += data.SetAsciiStringAt(pos, text);
data.Size = pos;
fMsg.setContent(data);
fMsg.SendAndRecieve(fNBTSession, fMsg);
int errorclass = fMsg.getErrorClass();
if (errorclass != CifsIoException.SUCCESS)
throw new CifsIoException(errorclass, fMsg.getErrorCode());
int size = fMsg.getContentSize();
if (size == 0)
return "";
pos = fMsg.getContentOffset();
return fMsg.GetAsciiStringAt(pos, size);
}
}
