/// <summary>
/// Unregister the bios name
/// </summary>
/// <exception cref="ObjectDisposedException">
/// thrown when this object is disposed.
/// </exception>
public void UnRegisterName()
{
if (disposed)
{
throw new ObjectDisposedException("NetbiosTransport");
}
// if the local name in .ctr is null, exception is thrown,
// the gc will dispose the object and this method will be invoked.
if (this.localNetbiosName == null)
{
return;
}
NCB ncb = new NCB();
try
{
NetbiosUtility.InitNcb(ref ncb);
ncb.ncb_command = (byte)NcbCommand.NCBDELNAME;
ncb.ncb_lana_num = networkAdapterId;
ncb.ncb_num = ncbNum;
ncb.ncb_name = NetbiosUtility.ToNetbiosName(localNetbiosName);
InvokeNetBios(ref ncb);
}
finally
{
NetbiosUtility.FreeNcbNativeFields(ref ncb);
}
}
/// <summary>
/// Listen to local netbios endpoint
/// </summary>
/// <returns>The connected session id</returns>
/// <exception cref="ObjectDisposedException">
/// thrown when this object is disposed.
/// </exception>
/// <exception cref="InvalidOperationException">
/// throw when listen fails
/// </exception>
public byte Listen()
{
if (disposed)
{
throw new ObjectDisposedException("NetbiosTransport");
}
NCB ncb = new NCB();
try
{
NetbiosUtility.InitNcb(ref ncb);
ncb.ncb_command = (byte)NcbCommand.NCBLISTEN;
ncb.ncb_lana_num = networkAdapterId;
//* means it can accept any connection.
ncb.ncb_callname = NetbiosUtility.ToNetbiosName("*");
ncb.ncb_name = NetbiosUtility.ToNetbiosName(localNetbiosName);
InvokeNetBios(ref ncb);
if (ncb.ncb_retcode != (byte)NcbReturnCode.NRC_GOODRET)
{
throw new InvalidOperationException("Failed in NCBLISTEN command, error is "
+ ((NcbReturnCode)ncb.ncb_retcode).ToString());
}
}
finally
{
NetbiosUtility.FreeNcbNativeFields(ref ncb);
}
return(ncb.ncb_lsn);
}
/// <summary>
/// Register bios name for further call
/// </summary>
/// <returns>The name index</returns>
/// <exception cref="ObjectDisposedException">
/// thrown when this object is disposed.
/// </exception>
/// <exception cref="InvalidOperationException">
/// throw when register name fails
/// </exception>
public byte RegisterName()
{
if (disposed)
{
throw new ObjectDisposedException("NetbiosTransport");
}
NCB ncb = new NCB();
try
{
NetbiosUtility.InitNcb(ref ncb);
ncb.ncb_command = (byte)NcbCommand.NCBADDNAME;
ncb.ncb_lana_num = networkAdapterId;
ncb.ncb_name = NetbiosUtility.ToNetbiosName(localNetbiosName);
InvokeNetBios(ref ncb);
if (ncb.ncb_retcode != (byte)NcbReturnCode.NRC_GOODRET)
{
throw new InvalidOperationException("Failed in NCBADDNAME command, error is "
+ ((NcbReturnCode)ncb.ncb_retcode).ToString());
}
this.ncbNum = ncb.ncb_num;
return(ncb.ncb_num);
}
finally
{
NetbiosUtility.FreeNcbNativeFields(ref ncb);
}
}
/// <summary>
/// Connect to remote machine
/// </summary>
/// <param name="remoteName">The remote machine bios name</param>
/// <returns>The session id</returns>
/// <exception cref="ObjectDisposedException">
/// thrown when this object is disposed.
/// </exception>
/// <exception cref="InvalidOperationException">
/// throw when connect fails.
/// </exception>
/// <exception cref="ArgumentNullException">
/// thrown when remoteName is null.
/// </exception>
public int Connect(string remoteName)
{
if (disposed)
{
throw new ObjectDisposedException("NetbiosTransport");
}
if (remoteName == null)
{
throw new ArgumentNullException("remoteName");
}
NCB ncb = new NCB();
try
{
NetbiosUtility.InitNcb(ref ncb);
ncb.ncb_command = (byte)NcbCommand.NCBCALL;
ncb.ncb_lana_num = networkAdapterId;
ncb.ncb_name = NetbiosUtility.ToNetbiosName(localNetbiosName);
ncb.ncb_callname = NetbiosUtility.ToNetbiosName(remoteName);
InvokeNetBios(ref ncb);
if (ncb.ncb_retcode != (byte)NcbReturnCode.NRC_GOODRET)
{
throw new InvalidOperationException("Failed in NCBCALL command, error is "
+ ((NcbReturnCode)ncb.ncb_retcode).ToString());
}
}
finally
{
NetbiosUtility.FreeNcbNativeFields(ref ncb);
}
return(ncb.ncb_lsn);
}
