public List <string> RequestFlightIDs()
{
try
{
IPHostEntry ipHostDetails = Dns.GetHostEntry(Dns.GetHostName());
IPAddress ipAddressDetails = ipHostDetails.AddressList[0];
IPEndPoint localEndPoint = new IPEndPoint(ipAddressDetails, 4242);
Socket sender = new Socket(ipAddressDetails.AddressFamily,
SocketType.Stream, ProtocolType.Tcp);
try
{
DataItem request = new DataItem("RequestFlightList");
string serialisedItem = DataItemSerialisation.GetSerialisedDataItem(request);
sender.Connect(localEndPoint);
// Send data request for Flight IDs to server
byte[] messageToSend = Encoding.ASCII.GetBytes(serialisedItem + "<EOF>");
int byteSent = sender.Send(messageToSend);
// Data buffer
byte[] messageReceived = new byte[4096];
// Recieve answer from server
int byteRecv = sender.Receive(messageReceived);
string response = Encoding.ASCII.GetString(messageReceived, 0, byteRecv);
FlightItemList flightItemList = FlightItemListSerialisation.GetDataItem(response);
return(flightItemList.FlightIDs);
}
catch (Exception e)
{
Console.WriteLine("Unexpected exception : {0}", e.ToString());
return(new List <string>());
}
}
catch (Exception e)
{
Console.WriteLine(e.ToString());
return(new List <string>());
}
}
/// <summary>
/// Run a DataServer instance.
/// </summary>
public void Run()
{
IPHostEntry ipHostDetails = Dns.GetHostEntry(Dns.GetHostName());
IPAddress ipAddressDetails = ipHostDetails.AddressList[0];
IPEndPoint localEndPoint = new IPEndPoint(ipAddressDetails, 4242);
Socket listenerSocket = new Socket(ipAddressDetails.AddressFamily,
SocketType.Stream, ProtocolType.Tcp);
try
{
listenerSocket.Bind(localEndPoint);
listenerSocket.Listen(10);
while (true)
{
WriteLine("Listening for data ");
Socket clientSocket = listenerSocket.Accept();
// Data buffer
byte[] bytes = new Byte[4096];
string data = null;
// Get the data from the server
while (true)
{
int numberOfBytes = clientSocket.Receive(bytes);
data += Encoding.ASCII.GetString(bytes, 0, numberOfBytes);
if (data.IndexOf("<EOF>", StringComparison.Ordinal) > -1)
{
break;
}
}
string serialisedXml = data.Substring(0, data.Length - 5);
DataItem dataItem = DataItemSerialisation.GetDataItem(serialisedXml);
WriteLine("Text received -> {0} ", dataItem.package);
string[] packageItems = dataItem.package.Split(',');
if (packageItems[0] == "RequestFlightList")
//Chain of Responsibility
{
List <string> FlightIDList = new List <string>();
foreach (Flight flight in FlightList.Flights)
{
FlightIDList.Add(flight.FlightID);
}
FlightItemList response = new FlightItemList(FlightIDList);
string serialisedItem = FlightItemListSerialisation.GetSerialisedDataItem(response);
byte[] message = Encoding.ASCII.GetBytes(serialisedItem);
clientSocket.Send(message);
//Recieved and responds to quest for Flight list.
}
else if (packageItems[0] == "NoOfFlights")
{
DataItem response = new DataItem((FlightList.Flights.Count - 1).ToString());
string serialisedItem = DataItemSerialisation.GetSerialisedDataItem(response);
byte[] message = Encoding.ASCII.GetBytes(serialisedItem);
clientSocket.Send(message);
//Returns list of Flights
}
else if (packageItems[0] == "BookASeat")
{
bool Successful = FlightList.Flights[Convert.ToInt32(packageItems[1])].BookSeat(packageItems[2]);
DataItem response = new DataItem(" ");
if (Successful)
{
response = new DataItem("Seat Booked Successfully");
}
else
{
response = new DataItem("Seat Unavailable");
}
//Prevents seat being booked if already occupied.
string serialisedItem = DataItemSerialisation.GetSerialisedDataItem(response);
byte[] message = Encoding.ASCII.GetBytes(serialisedItem);
clientSocket.Send(message);
}
else if (packageItems[0] == "SeatPlan")
{
DataItem response = new DataItem(FlightList.Flights[Convert.ToInt32(packageItems[1])].GetSeatingPlan());
string serialisedItem = DataItemSerialisation.GetSerialisedDataItem(response);
byte[] message = Encoding.ASCII.GetBytes(serialisedItem);
clientSocket.Send(message);
//Sends seating plan to client
}
else if (packageItems[0] == "AvailableSeats")
{
DataItem response = new DataItem(FlightList.Flights[Convert.ToInt32(packageItems[1])].GetAvailableSeats());
string serialisedItem = DataItemSerialisation.GetSerialisedDataItem(response);
byte[] message = Encoding.ASCII.GetBytes(serialisedItem);
clientSocket.Send(message);
//Sends available seat list to Client.
}
clientSocket.Shutdown(SocketShutdown.Both);
clientSocket.Close();
}
}
catch (Exception e)
{
WriteLine(e.ToString());
}
}
