private void Worker()
{
try
{
var request = (HttpWebRequest)WebRequest.Create(Url);
using (var response = (HttpWebResponse)request.GetResponse())
using (var stream = response.GetResponseStream())
using (var reader = new StreamReader(stream, Encoding.GetEncoding("utf-8")))
{
// Set Read Buffer
var buffer = new char[1048576]; // 1 MB
int i = reader.Read(buffer, 0, buffer.Length);
string xml = "";
while (i > 0 && !stop.WaitOne(0, true))
{
// Get string from buffer
var s = new string(buffer, 0, i);
// Find Beginning of XML (exclude HTTP header)
int b = s.IndexOf("<?xml ");
if (b >= 0)
{
s = s.Substring(b);
}
// Add buffer to XML
xml += s;
// Find Closing Tag
int c = FindClosingTag(xml);
// Test if End of XML
if (c >= 0)
{
b = xml.LastIndexOf("<?xml ");
if (c > b)
{
// Raise XML Received Event and pass XML
XmlReceived?.Invoke(xml.Substring(b, c - b));
// Remove MTConnect document from xml
xml = xml.Remove(b, c - b).Trim();
}
if (!string.IsNullOrEmpty(xml))
{
// Raise XML Error and break from while
XmlError?.Invoke(xml);
break;
}
// Reset XML
xml = "";
}
// Clear Buffer
Array.Clear(buffer, 0, buffer.Length);
// Read Next Chunk
i = reader.Read(buffer, 0, buffer.Length);
}
}
}
catch (Exception ex)
{
ConnectionError?.Invoke(ex);
}
}
private void SampleStream_XmlError(string xml)
{
XmlError?.Invoke(xml);
}