public WorkerProcess(IHostObject hostObject)
{
if (hostObject == null)
{
throw new ArgumentNullException("hostObject");
}
this.hostObject = hostObject;
}
/// <summary>
/// Unload the host and free up all resources used by it
/// </summary>
protected void UnloadHost()
{
if (this.HostObject != null)
{
this.HostObject.Dispose();
this.HostObject = null;
}
}
/// <summary>
/// Extract length from host object
/// </summary>
/// <param name="stegoObject"></param>
/// <returns></returns>
protected int ExtractLength(IHostObject hostObject)
{
///32 bytes of stego object will contain 4 bytes of legth information.
///We will read it byte by byte
byte[] lengthInfo = new byte[4];
for (int i = 0; i < 4; i++)
{
byte[] lengthBytes = new byte[8];
hostObject.Read(lengthBytes, 0, lengthBytes.Length);
///The first byte in this array will contain LSB information. We will have to
///read MSB first
for (int j = lengthBytes.Length; j > 0; j--)
{
///Shift one bit to right side so the next bit can be set
lengthInfo[i] <<= 0x1;
lengthInfo[i] |= Substitution.LsbValue(lengthBytes[j - 1]);
}
}
return(AppUtil.FromByteArray(lengthInfo));
}
private void TryStartHost(AutoResetEvent startedEvent, out Exception exception)
{
exception = null;
try
{
host = factory.CreateObject(address, this);
host.Closed += Host_Closed;
host.Closing += Host_Closing;
host.Faulted += Host_Faulted;
host.Opened += Host_Opened;
host.Opening += Host_Opening;
host.Open();
Logger.Debug($"Successfully started communication host for endpoint '{address}'.");
startedEvent.Set();
}
catch (Exception e)
{
exception = e;
}
}
public WorkerProcess(IHostObject hostObject)
{
if (hostObject == null)
throw new ArgumentNullException("hostObject");
this.hostObject = hostObject;
}
