/// <summary>
/// recieve a HelloRequest from the client
/// </summary>
/// <param name="pHro">the HRO</param>
public void recieveHelloRequest(HelloRequestObject pHro)
{
Log.LogManager.writeLogDebug("[RegistrationService:RegistrationService] Hello request recieved from " + pHro.Name + " with the ID " + pHro.ID);
ClientConfigObject cco = _DBManager.recieveHelloRequest(pHro);
Log.LogManager.writeLogDebug("[RegistrationService:RegistrationService] Hello: CCO generated, isConnected: " + cco.clientRequestObject.isConnected);
OnConfigRequestSendingEvent(cco);
}
/// <summary>
/// initializes the RegistrationServer
/// </summary>
internal void initialize()
{
_ConfigManager = new ConfigManager();
//timer registration
_timeoutTimer = new Timer(ConfigManager._ClientConfigObject.clientConnectionConfig.keepAliveInterval + 1000);
_timeoutTimer.Elapsed += intervalTimer_Elapsed;
_timeoutTimer.AutoReset = true;
_timeoutTimer.Start();
LogManager.updateClientStatus(Post_KNV_Client.MainWindow.ClientStatus.disconnected);
RequestHelloEvent(HelloRequestObject.createHelloFromClientConfig(ConfigManager._ClientConfigObject));
}
/// <summary>
/// gets fired when the registration service requests a HELLO to the server (e.g. after a timeout)
/// </summary>
/// <param name="pHello"></param>
void _RegistrationService_RequestHelloEvent(HelloRequestObject pHello)
{
//send hello
if (Config.ConfigManager._ClientConfigObject.clientConnectionConfig.targetGateway != String.Empty)
{
LogManager.writeLog("[Webservice] Sending HELLO to " + ConfigManager._ClientConfigObject.clientConnectionConfig.targetGateway);
_WebserviceSender.startHelloRequest(ConfigManager._ClientConfigObject.clientConnectionConfig.targetGateway, pHello);
}
else
{
LogManager.writeLog("[Webservice] Sending HELLO to " + ConfigManager._ClientConfigObject.clientConnectionConfig.targetIP);
_WebserviceSender.startHelloRequest(ConfigManager._ClientConfigObject.clientConnectionConfig.targetIP, pHello);
}
}
/// <summary>
/// response function from a hello.
/// </summary>
/// <param name="message">the stream recieved from the client</param>
/// <returns>a status message</returns>
public String responseHello(Stream message)
{
// deserialize
BinaryFormatter formatter = new BinaryFormatter();
HelloRequestObject hro = (HelloRequestObject)formatter.Deserialize(message);
// give info in the Log
LogManager.writeLog("[Webservice:ServerDefinition] Client " + hro.Name.ToString() + " " + hro.ownIP.ToString() + " has connected.");
// fire the event
OnHelloRequestEvent(hro);
// feedback for the client
return("HELLOREQUEST RECIEVED");
}
/// <summary>
/// starts a hello request to the target IP with the HRO object
/// </summary>
/// <param name="pTargetIP">the target server</param>
/// <param name="pHelloObject">data package containing the necessary information</param>
public void startHelloRequest(String pTargetIP, HelloRequestObject pHelloObject)
{
//send data
if (helloWorking)
{
return;
}
helloWorking = true;
Task <String> t = new Task <String>(() => sendRequestThread(@"http://" + pTargetIP + @"/HELLO", pHelloObject, 10000));
t.ContinueWith(TaskFaultedHandler, TaskContinuationOptions.OnlyOnFaulted);
t.ContinueWith(HelloRequestSuccessfulHandler, TaskContinuationOptions.OnlyOnRanToCompletion);
t.ContinueWith(delegate { helloWorking = false; });
t.Start();
}
/// <summary>
/// gets thrown every time the keepAliveInterval hits
/// </summary>
void intervalTimer_Elapsed(object sender, ElapsedEventArgs e)
{
if (ConfigManager._ClientConfigObject.clientRequestObject.isConnected)
{
LogManager.updateClientStatus(Post_KNV_Client.MainWindow.ClientStatus.waiting_for_ping);
}
if (timerRounds < 2)
{
timerRounds++;
return;
}
timerRounds = 0;
LogManager.writeLog("[RegistrationService] TIMEOUT: Requesting new HELLO");
ConfigManager._ClientConfigObject.clientRequestObject.isConnected = false;
LogManager.updateClientStatus(Post_KNV_Client.MainWindow.ClientStatus.disconnected);
RequestHelloEvent(HelloRequestObject.createHelloFromClientConfig(ConfigManager._ClientConfigObject));
}
/// <summary>
/// the task the dbMamager has to do if a client sends a HelloRequest
/// </summary>
/// <param name="pHbo">the HBO</param>
/// <returns>returns the CCO</returns>
public ClientConfigObject recieveHelloRequest(HelloRequestObject pHbo)
{
try
{
//check if client already exists
DataTable currentDataTable = getClientDataTable();
DataColumn[] primaryKeyArray = new DataColumn[1];
primaryKeyArray[0] = currentDataTable.Columns["ClientId"];
currentDataTable.PrimaryKey = primaryKeyArray;
//if exists, do
if (currentDataTable.Rows.Contains(pHbo.ID))
{
DataRow targetRow = currentDataTable.Rows.Find(pHbo.ID);
targetRow[2] = pHbo.ownIP;
//get object from DB
ClientConfigObject cco;
using (MemoryStream memStream = new MemoryStream((byte[])targetRow[3]))
{
BinaryFormatter formatter = new BinaryFormatter();
cco = (ClientConfigObject)formatter.Deserialize(memStream);
memStream.Close();
}
//change object
cco.ownIP = pHbo.ownIP;
//check if gateway is defined, if yes, send gateway info as target IP instead of server IP
if (Config.ServerConfigManager._ServerConfigObject.gatewayAddress == string.Empty)
{
cco.clientConnectionConfig.targetIP = Config.ServerConfigManager._ServerConfigObject.ownIP + ":" +
Config.ServerConfigManager._ServerConfigObject.listeningPort;
}
else
{
cco.clientConnectionConfig.targetIP = Config.ServerConfigManager._ServerConfigObject.gatewayAddress;
}
cco.clientRequestObject.isConnected = true;
//write object
using (MemoryStream wrStream = new MemoryStream())
{
BinaryFormatter formatterTwo = new BinaryFormatter();
formatterTwo.Serialize(wrStream, cco);
byte[] serInput = wrStream.ToArray();
targetRow[3] = (Object)serInput;
wrStream.Close();
}
//update
updateKinectObjectInDB(currentDataTable);
return(cco);
}
else
{
//create new cco
ClientConfigObject cco = ClientConfigObject.createDefaultConfig();
cco.clientConnectionConfig.keepAliveInterval = Config.ServerConfigManager._ServerConfigObject.keepAliveInterval;
cco.ownIP = pHbo.ownIP;
cco.name = pHbo.Name;
cco.clientRequestObject.isConnected = true;
//check if gateway is defined, if yes, send gateway info as target IP instead of server IP
if (Config.ServerConfigManager._ServerConfigObject.gatewayAddress == string.Empty)
{
cco.clientConnectionConfig.targetIP = Config.ServerConfigManager._ServerConfigObject.ownIP + ":" +
Config.ServerConfigManager._ServerConfigObject.listeningPort;
}
else
{
cco.clientConnectionConfig.targetIP = Config.ServerConfigManager._ServerConfigObject.gatewayAddress;
}
cco.ID = getNewPrimaryID(currentDataTable);
//write object
BinaryFormatter formatter = new BinaryFormatter();
MemoryStream wrStream = new MemoryStream();
formatter.Serialize(wrStream, cco);
byte[] serInput = wrStream.ToArray();
wrStream.Close();
wrStream.Dispose();
Object[] values = new Object[4];
values[0] = cco.ID;
values[1] = cco.name;
values[2] = cco.ownIP;
values[3] = (Object)serInput;
currentDataTable.Rows.Add(values);
//update the database
updateKinectObjectInDB(currentDataTable);
return(cco);
}
}
catch (Exception ex) { LogManager.writeLog("[DataManager:DBManager] ERROR: " + ex.Message); throw; }
}
