private void BackgroundWorkerOnDoWork(object sender, DoWorkEventArgs doWorkEventArgs)
{
var receiveBuffer = new byte[4096];
int receiveBytesCount;
var node = (Node)doWorkEventArgs.Argument;
using (var socket = new Socket(SocketType.Stream, ProtocolType.Tcp))
{
try
{
socket.Connect(node.Address, node.Port);
}
catch
{
doWorkEventArgs.Result = CheckConnectionResult.CreateFail(node.Id);
return;
}
if (!socket.Connected)
{
doWorkEventArgs.Result = CheckConnectionResult.CreateFail(node.Id);
return;
}
var messageToSend = Encoding.UTF8.GetBytes("{\"numberOfRecords\":200,\"version\":1,\"includeInfo\":true}");
try
{
socket.Send(messageToSend);
}
catch
{
doWorkEventArgs.Result = CheckConnectionResult.CreateFail(node.Id);
return;
}
try
{
receiveBytesCount = socket.Receive(receiveBuffer, 4096, SocketFlags.None);
}
catch
{
doWorkEventArgs.Result = CheckConnectionResult.CreateFail(node.Id);
return;
}
}
var receivedData = Encoding.UTF8.GetString(receiveBuffer, 0, receiveBytesCount);
var dataDecoderResult = _dataDecoder.Decode(receivedData);
if (dataDecoderResult == null)
{
doWorkEventArgs.Result = CheckConnectionResult.CreateFail(node.Id);
return;
}
doWorkEventArgs.Result = CheckConnectionResult.CreateSuccess(node.Id, dataDecoderResult);
}
private void OneDone(CheckConnectionResult result)
{
var nodes = _nodeRepository.GetAll();
var node = nodes.First(x => x.Id == result.Id);
var now = DateTime.Now;
if (result.IsOnline)
{
node.CurrentStatus = NodeStatus.Available;
node.UpSince = result.DataDecoderResult.UpSince;
node.LastDataAvailableTime = result.DataDecoderResult.LastDataAvailableTime;
node.LastAccessed = now;
}
else
{
node.ResetSessionVariables();
}
node.LastTry = now;
_nodeRepository.Update(node);
FillList();
}