/// <summary>
/// Lắng nghe phản hồi từ phía client
/// </summary>
void Receive(object obj)
{
Socket client = obj as Socket;
try
{
while (true)
{
byte[] buffer = new byte[1024 * 1024 * 20];
client.Receive(buffer);
object data = Deserialize(buffer);
ServerResponse container = data as ServerResponse;
switch (container.Type)
{
case ServerResponseType.SendStudent:
Student student = container.Data as Student;
AddMessage(client.RemoteEndPoint.ToString() + ": Thông tin sinh viên thao tác trên máy: " + student.FullNameAndId);
break;
case ServerResponseType.SendFile:
FileResponse file = container.Data as FileResponse;
string fileName = file.FileInfo.Name;
AddMessage(client.RemoteEndPoint.ToString() + ": Đã nhận bài làm, tập tin có tên: " + fileName);
using (var fileStream = File.Create(fileName))
{
fileStream.Write(file.FileContent, 0, file.FileContent.Length);
}
break;
case ServerResponseType.SendList:
break;
case ServerResponseType.SendString:
string computerName = (string)container.Data;
AddMessage(client.RemoteEndPoint.ToString() + ": Tên máy: " + computerName);
break;
case ServerResponseType.BeginExam:
break;
case ServerResponseType.FinishExam:
break;
case ServerResponseType.LockClient:
break;
default:
break;
}
}
}
catch
{
AddMessage(client.RemoteEndPoint.ToString() + ": " + "Đã đóng kết nối");
clientList.Remove(client);
client.Close();
}
}
public void HandleMessage(ServerResponse sender, Event e)
{
Event.EventTypeEnum enumType = e.EventType;
Account acc = new Account("NULL", "NULL");
switch (enumType)
{
case Event.EventTypeEnum.CreateAccount:
//Check list of all accounts and make sure the username isn't taken. If not, send new account
LoginEventData createAccData = JsonConvert.DeserializeObject <LoginEventData>(e.EventData.ToString());
bool canCreate = true;
if (accountList == null)
{
accountList = new List <Account>();
}
for (int i = 0; i < accountList.Count && canCreate; i++)
{
string s = accountList.ElementAt(i).Username;
if (s == createAccData.Username)
{
canCreate = false;
}
}
if (canCreate)
{
acc = new Account(createAccData.Username, createAccData.Password);
acc.IsOnline = true;
accountList.Add(acc);
updateActivityList("New user created: " + createAccData.Username);
updateUserList(accountList);
//Send success response
//sender.SendResponseToClient(new Event(Event.EventTypeEnum.ServerResponseSuccess, null));
//Send account data
sender.SendResponseToClient(new Event(Event.EventTypeEnum.ServerSendAccount, new AccountData(acc)));
}
else
{
updateActivityList("User attempted to create an account with the same username as one that exists.");
sender.SendResponseToClient(new Event(Event.EventTypeEnum.ServerResponseError, new ServerErrorData("Account already exists. Try again.")));
}
break;
case Event.EventTypeEnum.LoginAttempt:
//Find if the username exits. If so, make sure the password is correct. Send account data
bool found = false;
LoginEventData loginData = JsonConvert.DeserializeObject <LoginEventData>(e.EventData.ToString());
for (int i = 0; i < accountList.Count && !found; i++)
{
string u = accountList.ElementAt(i).Username;
if (u == loginData.Username)
{
found = true;
acc = accountList.ElementAt(i);
}
}
if (loginData.Password == acc.Password)
{
//Successful login attempt
updateActivityList("User " + loginData.Username + " has logged in");
acc.IsOnline = true;
updateUserList(accountList);
sender.SendResponseToClient(new Event(Event.EventTypeEnum.ServerSendAccount, new AccountData(acc)));
}
else
{
//Unsuccessful login attempt
updateActivityList("User " + loginData.Username + " made bad login attempt");
sender.SendResponseToClient(new Event(Event.EventTypeEnum.ServerResponseError, new ServerErrorData("We couldn't find that username/password combo. Try again.")));
}
break;
case Event.EventTypeEnum.UserLogOff:
LoginEventData logOffData = JsonConvert.DeserializeObject <LoginEventData>(e.EventData.ToString());
foreach (Account a in accountList)
{
if (a.Username == logOffData.Username)
{
updateActivityList(a.Username + " has logged off");
a.IsOnline = false;
updateUserList(accountList);
break;
}
}
break;
case Event.EventTypeEnum.ClientStockRequest:
StockRequestData reqData = JsonConvert.DeserializeObject <StockRequestData>(e.EventData.ToString());
string reqSymbol = reqData.StockSymbol.ToUpper();
bool inStockList = false;
Stock reqStockToSend = new Stock("NULL");
for (int i = 0; i < stockList.Count; i++)
{
string tStock = stockList.ElementAt(i).TickerSymbol;
if (tStock == reqSymbol)
{
inStockList = true;
stockList.ElementAt(i).UpdateStock();
reqStockToSend = stockList.ElementAt(i);
break;
}
}
if (!inStockList)
{
Stock tStock = new Stock(reqSymbol);
reqStockToSend = tStock;
stockList.Add(tStock);
}
StockData sd = new StockData(reqStockToSend);
Event reqEventToSend = new Event(Event.EventTypeEnum.ServerSendStock, sd);
sender.SendResponseToClient(reqEventToSend);
updateStockList(stockList);
break;
case Event.EventTypeEnum.NULLEVENTENUM:
updateActivityList("Null event received in ServerHandler.HandleMessage()");
break;
}
}