/// <summary>
/// Initializes the client and establishes a new connection to the Eyeshot Web Service.
/// </summary>
/// <remarks>The client must support the callback for listening the web service replies.</remarks>
private void ClientConnect()
{
btnConnect.Enabled = false;
if (_client != null)
{
try
{
_client.Close();
}
catch
{
_client.Abort();
}
finally
{
_client = null;
}
}
_callback = new EyeshotCallback();
CallbackEventSubscription(true);
var instanceContext = new InstanceContext(_callback);
_client = new EyeshotClient(instanceContext);
ClientEventSubscription(true);
bool opened = false;
try
{
_client.Open();
opened = true;
}
catch (Exception ex)
{
if (ex is PlatformNotSupportedException)
{
AppendToLog("This platform does not support client side WebSockets natively. Please try with a more recent Windows version (Windows 8 or higher)");
}
else
{
AppendToLog(ex.Message);
}
btnConnect.Enabled = true;
}
if (!opened)
{
return;
}
_connectionId = _client.Connect(accessKey);
if (_connectionId > 0)
{
lblConnectionId.Text = "Id: " + _connectionId;
_downloadFolder = System.IO.Path.Combine(_rootDownloadFolder, String.Format(@"{0}\", _connectionId));
if (!Directory.Exists(_downloadFolder))
{
Directory.CreateDirectory(_downloadFolder);
}
InitReadingSettings();
btnInputFile.Enabled = btnUpdateSettings.Enabled = txtInput.Enabled = btnUpload.Enabled = trackUpload.Enabled = true;
btnExtraFiles.Enabled = false;
btnDisconnect.Enabled = true;
AppendToLog("Connection established.", true);
}
else
{
AppendToLog("Connection failed.", true);
if (_connectionId == -1)
{
AppendToLog("Invalid access key. Get it here: https://www.devdept.com/Account");
}
else if (_connectionId == -2)
{
AppendToLog("The access key has been suspended.");
}
else if (_connectionId == -3)
{
AppendToLog("Error while opening the connection.");
}
ClientShutdown();
btnConnect.Enabled = true;
}
}
/// <summary>
/// Disconnect and close the client connection with the Eyeshot Web Service.
/// </summary>
private void ClientShutdown()
{
if (_callback != null)
{
try
{
CallbackEventSubscription(false);
}
finally
{
_callback = null;
}
}
if (_client != null)
{
try
{
ClientEventSubscription(false);
_client.Disconnect();
_client.Close();
}
catch
{
_client.Abort();
}
}
if (chkDeleteFiles.Checked)
{
treePicView.SelectedNode = null;
// collects nodes of the current connection...
List <TreeNode> removeList = new List <TreeNode>();
foreach (TreeNode node in treePicView.Nodes)
{
if (node.Tag.ToString().Contains(_downloadFolder))
{
removeList.Add(node);
}
}
// ...and remove them
foreach (TreeNode node in removeList)
{
treePicView.Nodes.Remove(node);
}
// close the visualizer
if (_outputVisualizer != null)
{
_outputVisualizer.Close();
}
// finally I can delete the subfolder.
try
{
if (_downloadFolder != null)
{
Directory.Delete(_downloadFolder, true);
}
}
catch (Exception ex)
{
AppendToLog(ex.Message, true);
}
}
_connectionId = 0;
_mainFileUploaded = false;
lblConnectionId.Text = "Id: ";
lstBoxTasks.Items.Clear();
ProgressBarReset(progressBarUploads);
ProgressBarReset(progressBarOperations);
ProgressBarReset(progressBarDownloads);
}
