public void CheckCancellationRequests()
{
try
{
if (!m_netStream.DataAvailable)
{
return;
}
XMLStream inputXMLStream = new XMLStream();
var bytes = m_netStream.Read(inputXMLStream.getBuffer(), inputXMLStream.getBufferOffset(),
inputXMLStream.getBufferSize() - inputXMLStream.getBufferOffset());
inputXMLStream.addBytesRead(bytes);
//we let the xmlstream object know that some bytes have been read in its buffer
string xmlItem = inputXMLStream.peekNextXMLItem();
if (xmlItem != "")
{
string xmlItemContent = inputXMLStream.getLastXMLItemContent();
if (xmlItemContent == JobTransmitter.m_quitMessage)
{
inputXMLStream.addProcessedBytes(bytes);
inputXMLStream.discardProcessedData();
LogMessage("Stopping job execution");
m_cancelTokenSource.Cancel();
}
}
}
catch (IOException)
{
LogMessage("IOException in CheckCancellationRequests()");
}
catch (OperationCanceledException)
{
LogMessage("Thread finished gracefully");
}
catch (ObjectDisposedException)
{
LogMessage("Network stream closed: async read finished");
}
catch (InvalidOperationException ex)
{
LogMessage("InvalidOperationException in CheckCancellationRequests");
LogMessage(ex.ToString());
}
catch (Exception ex)
{
LogMessage("Unhandled exception in CheckCancellationRequests");
LogMessage(ex.ToString());
}
}
protected void SendFile(string fileName, FileType type, bool sendContent
, bool fromCachedDir, CancellationToken cancelToken, string rename = null)
{
string fileTypeXMLTag;
string header;
byte[] headerBytes;
string footer = "";
fileTypeXMLTag = getFileTypeXMLTag(type);
string sentFilename;
if (rename != null)
{
sentFilename = rename;
}
else
{
sentFilename = fileName;
}
header = "<" + fileTypeXMLTag + " Name=\"" + sentFilename + "\"";
if (sendContent)
{
footer = "</" + fileTypeXMLTag + ">";
}
if (sendContent)
{
FileStream fileStream = null;
long fileSize = 0;
LogMessage("Sending file " + fileName);
if (fromCachedDir)
{
fileName = getCachedFilename(fileName);
}
try { fileStream = File.OpenRead(fileName); }
catch
{
LogMessage("Could not find input file: " + fileName);
return;
}
fileSize = fileStream.Length;
header += " Size=\"" + fileSize + "\">";
//send the header
headerBytes = Encoding.ASCII.GetBytes(header);
WriteAsync(headerBytes, 0, headerBytes.Length, cancelToken);
long readBytes = 0;
int lastReadBytes;
while (readBytes < fileSize)
{
byte[] buffer = new byte[m_xmlStream.getBufferSize()];
lastReadBytes = fileStream.Read(buffer, 0, m_xmlStream.getBufferSize());
readBytes += lastReadBytes;
try
{
WriteAsync(buffer, 0, (int)lastReadBytes, cancelToken);
}
catch (Exception ex)
{
Console.WriteLine(ex.Message + ex.StackTrace);
}
}
fileStream.Close();
//Send the footer: </Exe>, </Input> or </Output>
byte[] footerBytes = Encoding.ASCII.GetBytes(footer);
WriteAsync(footerBytes, 0, footerBytes.Length, cancelToken);
m_netStream.Flush();
}
else
{
header += "/>";
//send the header
headerBytes = Encoding.ASCII.GetBytes(header);
WriteAsync(headerBytes, 0, headerBytes.Length, cancelToken);
m_netStream.Flush();
}
}