public bool DeregisterComputationalNode(Node node)
{
int i = 0;
foreach (Node n in ComputationalNodes) {
if (n.ID == node.ID) {
Clients.RemoveAt(i);
return true;
}
i++;
}
return false;
}
public bool DeregisterTaskManagers(Node node)
{
int i = 0;
foreach (Node n in TaskManagers) {
if (n.ID == node.ID) {
Clients.RemoveAt(i);
return true;
}
i++;
}
return false;
}
public static void Receive(Socket client, Node node)
{
try {
// Create the state object.
StateObject state = new StateObject();
state.workSocket = client;
state.node = node;
// Begin receiving the data from the remote device.
client.BeginReceive(state.buffer, 0, StateObject.BufferSize, 0, new AsyncCallback(ReceiveCallback), state);
} catch (Exception e) {
node.FailedToSendToServer(null);
Console.WriteLine("Receive Exception: " + e.Message + "\nAttempting to reconnect");
}
}
public void RegisterTaskManager(Node node)
{
this.TaskManagers.Add(node);
}
public void RegisterComputationalNode(Node node)
{
this.ComputationalNodes.Add(node);
}
public void RegisterClient(Node node)
{
this.Clients.Add(node);
}
public void RegisterBackupServer(Node node)
{
foreach (Node n in this.BackupServers) { //do not duplicate same backup
if (n.IP.Equals(node.IP) && n.Port == node.Port)
return;
}
this.BackupServers.Enqueue(node);
}
public static void StartClient(Int32 port, IPAddress ipAddress, String message, Node node)
{
// Connect to a remote device.
Socket client = null;
try {
// Establish the remote endpoint for the socket.
// The name of the
// remote device is "host.contoso.com".
//IPHostEntry ipHostInfo = Dns.Resolve("host.contoso.com");
//IPAddress ipAddress = ipHostInfo.AddressList[0];
//IPAddress ipAddress = getIPAddressOfTheLocalMachine();
IPEndPoint remoteEP = new IPEndPoint(ipAddress, port);
// Create a TCP/IP socket.
client = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
StateObject state = new StateObject();
state.workSocket = client;
state.node = node;
// Connect to the remote endpoint.
client.BeginConnect(remoteEP, new AsyncCallback(ConnectCallback), state);
connectDone.WaitOne();
// Send test data to the remote device.
Send(client, message, node); //wyjebane <EOF>
sendDone.WaitOne();
// Receive the response from the remote device.
Receive(client, node);
receiveDone.WaitOne();
// Write the response to the console.
//Console.WriteLine("Response received : {0}", response);
Console.ReadLine();
// Release the socket.
client.Shutdown(SocketShutdown.Both);
client.Close();
} catch (SocketException e) {
Console.WriteLine("StartClient Exception: " + e.ToString() + "\nAttempting to reconnect");
if (client != null) {
//Console.WriteLine("Weszłem");
//client.Shutdown(SocketShutdown.Both);
//client.Close();
}
node.FailedToSendToServer(message);
} catch (Exception e) {
Console.WriteLine("StartClient General Exception: " + e.ToString()+"\n");
}
}
public static void Send(Socket client, String data, Node node)
{
// Convert the string data to byte data using ASCII encoding.
byte[] byteData = Encoding.ASCII.GetBytes(data);
StateObject state = new StateObject();
state.node = node;
state.workSocket = client;
// Begin sending the data to the remote device.
client.BeginSend(byteData, 0, byteData.Length, 0, new AsyncCallback(SendCallback), state);
}
bool ensureNode(Node node)
{
if (node == null)
return false;
return true;
//Console.WriteLine("Did not find node with id: "+ status.Id + "\tSending NoOp");
}
public void SendMessage(Int32 port, IPAddress server, String message, Node node)
{
AsynchronousClient.StartClient(port, server, message, node);
}
