public byte[] ProcessHighChartsRequest(HighCharts chart)
{
if (ExeProcess.HasExited)
{
if (_keepAlive)
{
StartServer();
}
else
{
Dispose();
throw new Exception("could not process. Server is no longer running and KeepAlive is set to false.");
}
}
var newGuid = Guid.NewGuid();
var temporaryGraphImageFile = Path.Combine(TemporaryImagesDirectory, $"{newGuid}.png");
var wrapper = new HighChartsRenderServerWrapper()
{
infile = JsonConvert.SerializeObject(chart.options,
Formatting.Indented,
_jsonSerializerSettings),
constr = "Chart",
outfile = temporaryGraphImageFile,
callback = chart.callback
};
return(PostRequestAndReturnBytesOnSuccess(wrapper, temporaryGraphImageFile));
}
private byte[] PostRequestAndReturnBytesOnSuccess(HighChartsRenderServerWrapper wrapper, string temporaryGraphImageFile)
{
HttpWebRequest request = (HttpWebRequest)WebRequest.Create($"http://{_ip}:{_port}");
request.ContentType = "application/json";
request.Timeout = isFirstRun() ? 20000 : TimeoutBeforeRetry;
request.Method = "POST";
var postData = JsonConvert.SerializeObject(wrapper, _jsonSerializerSettings);
if (isFirstRun())
{
Thread.Sleep(350);
}
bool sucess = false;
var retries = 0;
while (retries > Maxretries || sucess != true)
{
try
{
using (var streamWriter = new StreamWriter(request.GetRequestStream()))
{
streamWriter.Write(postData);
streamWriter.Flush();
streamWriter.Close();
}
using (var response = (HttpWebResponse)request.GetResponse())
{
if (response.StatusCode == HttpStatusCode.OK)
{
var bytesToReturn = File.ReadAllBytes(temporaryGraphImageFile);
CreatedTempFiles.Add(temporaryGraphImageFile);
return(bytesToReturn);
}
}
sucess = true;
}
catch (Exception ex)
{
if (retries + 1 == Maxretries)
{
throw;
}
retries++;
}
}
return(null);
}