public string WaitForKey(TNServerScreen currentScreen)
{
//Console.WriteLine("--wait for key");
byte[] data = null;
bool screen = false;
do
{
do
{
while (!mDataSemaphore.Acquire(1000))
{
if (mSocket == null)
{
throw new TN3270ServerException("Connection dropped");
}
}
data = (byte[])mData.Dequeue();
}while (data == null);
if (data[0] == 255 && data[1] == 253)
{
// assume do/will string
for (int i = 0; i < data.Length; i++)
{
if (data[i] == 253)
{
data[i] = 251; // swap DO to WILL
Console.WriteLine("DO " + data[i + 1]);
}
else if (data[i] == 251)
{
data[i] = 253; // swap WILL to DO
Console.WriteLine("WILL " + data[i + 1]);
}
}
mSocket.Send(data);
screen = false;
}
else
{
screen = true;
}
}while (!screen);
return(currentScreen.HandleTN3270Data(data, data.Length));
}
/// <summary>
/// Refresh the current screen. If timeout > 0, it will wait for
/// this number of milliseconds.
/// If waitForValidScreen is true, it will wait for a valid screen, otherwise it
/// will return immediately that any screen data is visible
/// </summary>
/// <param name="waitForValidScreen"></param>
/// <param name="timeoutMS">The time to wait in ms</param>
/// <returns></returns>
public bool Refresh(bool waitForValidScreen, int timeoutMS)
{
long start = DateTime.Now.Ticks / (10 * 1000);
long end = start + timeoutMS;
if (currentConnection == null)
{
throw new TNHostException("TNEmulator is not connected", "There is no currently open TN3270 connection", null);
}
if (sout != null && Debug == true)
{
sout.WriteLine("Refresh::Refresh(" + waitForValidScreen + ", " + timeoutMS + "). FastScreenMode=" + this.mConnectionConfiguration.FastScreenMode);
}
do
{
if (waitForValidScreen)
{
bool run = false;
int timeout = 0;
do
{
timeout = (int)(end - (DateTime.Now.Ticks / 10000));
if (timeout > 0)
{
if (sout != null && this.Debug)
{
sout.WriteLine("Refresh::Acquire(" + timeout + " milliseconds). unsafe Count is currently " + semaphore.Count);
}
run = semaphore.Acquire(Math.Min(timeout, 1000));
if (!IsConnected)
{
throw new TNHostException("The TN3270 connection was lost", this.currentConnection.DisconnectReason, null);
}
if (run)
{
if (sout != null && this.Debug)
{
sout.WriteLine("Refresh::return true at line 279");
}
return(true);
}
else
{
}
}
}while (!run && timeout > 0);
if (sout != null && this.Debug)
{
sout.WriteLine("Refresh::Timeout or acquire failed. run= " + run + " timeout=" + timeout);
}
}
if (this.mConnectionConfiguration.FastScreenMode || this.KeyboardLocked == 0)
{
// Store screen in screen database and identify it
this.DisposeOfCurrentScreenXML();
// Force a refresh
currentScreenXML = null;
if (sout != null && this.Debug)
{
sout.WriteLine("Refresh::Timeout, but since keyboard is not locked or fastmode=true, return true anyway");
}
return(true);
}
else
{
System.Threading.Thread.Sleep(10);
}
}while (DateTime.Now.Ticks / 10000 < end);
if (sout != null)
{
sout.WriteLine("Refresh::Timed out (2) waiting for a valid screen. Timeout was " + timeoutMS);
}
if (Config.FastScreenMode == false && Config.ThrowExceptionOnLockedScreen && this.KeyboardLocked != 0)
{
throw new ApplicationException("Timeout waiting for new screen with keyboard inhibit false - screen present with keyboard inhibit. Turn off the configuration option 'ThrowExceptionOnLockedScreen' to turn off this exception. Timeout was " + timeoutMS + " and keyboard inhibit is " + this.KeyboardLocked);
}
if (Config.IdentificationEngineOn)
{
throw new TNIdentificationException(mScreenName, GetScreenAsXML());
}
else
{
return(false);
}
}
/// <summary>
/// Refresh the current screen. If timeout > 0, it will wait for
/// this number of milliseconds.
/// If waitForValidScreen is true, it will wait for a valid screen, otherwise it
/// will return immediately that any screen data is visible
/// </summary>
/// <param name="waitForValidScreen"></param>
/// <param name="timeoutMS">The time to wait in ms</param>
/// <returns></returns>
public bool Refresh(bool waitForValidScreen, int timeoutMS)
{
long start = DateTime.Now.Ticks / (10 * 1000);
long end = start + timeoutMS; // timeout
if (currentConnection == null)
{
throw new TNHostException("TNEmulator is not connected", "There is no currently open TN3270 connection", null);
}
if (sout != null && Debug == true)
{
sout.WriteLine("Refresh::Refresh(" + waitForValidScreen + ", " + timeoutMS + "). FastScreenMode=" + this.mConnectionConfiguration.FastScreenMode);
}
do
{
if (waitForValidScreen)
{
bool run = false;
int timeout = 0;
do
{
timeout = (int)(end - (DateTime.Now.Ticks / 10000));
if (timeout > 0)
{
if (sout != null && this.Debug)
{
sout.WriteLine("Refresh::Acquire(" + timeout + " milliseconds). unsafe Count is currently " + mre.Count);
}
run = mre.Acquire(Math.Min(timeout, 1000));
//Console.WriteLine("run = "+run);
if (!IsConnected)
{
throw new TNHostException("The TN3270 connection was lost", this.currentConnection.DisconnectReason, null);
}
if (run)
{
if (sout != null && this.Debug)
{
sout.WriteLine("Refresh::return true at line 279");
}
return(true);
}
}
}while (!run && timeout > 0);
if (sout != null && this.Debug)
{
sout.WriteLine("Refresh::Timeout or acquire failed. run= " + run + " timeout=" + timeout);
}
}
if (this.mConnectionConfiguration.FastScreenMode || this.KeyboardLocked == 0)
{
//
// Store screen in screen database and identify it
//
_currentScreenXML = null; // force a refresh
if (sout != null && this.Debug)
{
sout.WriteLine("Refresh::Timeout, but since keyboard is not locked and fastmode=true, return true anyway");
}
return(true);
//
// --Screen identification code here--
//
#if FALSE
if (waitForValidScreen)
{
if (sout != null)
{
sout.WriteLine("Refresh::waitForValidScreen is true - loop will loop and acquire another mre lock.");
}
// reset screen count to let us then wait for the next transition
// wait for the next screen transistion
//Console.WriteLine("-- acquire(0), release any pending transactions");
//mre.AcquireAll(0);
//mre.Reset();
}
else
{
if (sout != null && this.Debug == true)
{
sout.WriteLine("waitForValidScreen is false. Refresh returned false.");
}
return(false);
}
#endif
}
else
{
System.Threading.Thread.Sleep(10);
}
}while (DateTime.Now.Ticks / 10000 < end);
//
//
if (sout != null)
{
sout.WriteLine("Refresh::Timed out (2) waiting for a valid screen. Timeout was " + timeoutMS);
}
if (Config.FastScreenMode == false &&
Config.ThrowExceptionOnLockedScreen &&
this.KeyboardLocked != 0)
{
throw new ApplicationException("Timeout waiting for new screen with keyboard inhibit false - screen present with keyboard inhibit. Turn off the configuration option 'ThrowExceptionOnLockedScreen' to turn off this exception. Timeout was " + timeoutMS + " and keyboard inhibit is " + this.KeyboardLocked);
}
if (Config.IdentificationEngineOn)
{
throw new TNIdentificationException(mScreenName, GetScreenAsXML());
}
else
{
return(false);
}
}