/// <summary>
/// Handles the ServerLog Event
/// </summary>
/// <param name="sender"></param>
/// <param name="args"></param>
private void Ftp_ServerLogEvent(object sender, ServerLogArgs args)
{
ServerLog.Dispatcher.Invoke(new Action(() =>
{
ServerLog.AppendText(args.Message + Environment.NewLine);
ServerLog.Focus();
ServerLog.CaretIndex = ServerLog.Text.Length;
ServerLog.ScrollToEnd();
}));
}
private void WriteMessage(string message)
{
if (InvokeRequired)
{
this.Invoke(new Action <string>(WriteMessage), message);
}
else
{
if (ServerLog.Text != "")
{
ServerLog.AppendText(Environment.NewLine);
}
ServerLog.Select(ServerLog.TextLength, 0);
ServerLog.AppendText("Server >> " + message);
ServerLog.SelectionStart = ServerLog.TextLength;
ServerLog.SelectionLength = 0;
ServerLog.ScrollToCaret();
}
}
private void ServerListening()
{
try
{
Socket listener = new Socket(SocketType.Stream, ProtocolType.Tcp);
listener.Bind(new IPEndPoint(IPAddress.Any, serverPort));
listener.Listen(0);
serverIsRunning = true;
Thread serverProcessingThread = new Thread(ServerProcessing);
serverProcessingThread.Start();
while (serverIsRunning)
{
if (listener.Poll(0, SelectMode.SelectRead))
{
Socket socket = listener.Accept();
bool authorizedConnection = false;
JObject response = new JObject();
response.Add("result", "error");
string request = "";
//чтение запроса
if ((request = ReceiveRequest(socket)).Length > 0)
{
JObject data = JObject.Parse(request);
string action = data.GetValue("action").ToString();
//обработка запроса
if (action == "authorization")
{
//чтение и проверка пароля
string name = data.GetValue("name").ToString();
string password = data.GetValue("password").ToString();
if (password.Equals(serverPassword))
{
//добавление клиента в очередь
Client client = null;
if ((client = clients.Find(item => item.Name == name)) == null)
{
if (clients.Count < maximumClients)
{
response["result"] = "success";
string text = string.Format("[{0}]: {1} connected", DateTime.Now.ToString("H:m:ss"), name);
Invoke((MethodInvoker)(() =>
{
ServerLog.AppendText(text + Environment.NewLine);
}));
//уведомление других клиентов
JObject notification = new JObject();
notification.Add("action", "message");
notification.Add("message", text);
for (int j = 0; j < clients.Count; ++j)
{
SendRequest(clients[j].Socket, notification);
}
//добавление клиента в очередь
clients.Add(new Client(DateTime.Now, socket, name));
authorizedConnection = true;
}
else
{
response.Add("message", "Server is full!");
}
}
else
{
response.Add("message", "User with this name already exists!");
}
}
else
{
response.Add("message", "Invalid password!");
}
}
else
{
response.Add("message", "You are not authorized!");
}
}
//формирование и отправка ответа
SendRequest(socket, response);
//если поключенный клиент не авторизовался
if (!authorizedConnection)
{
socket.Close();
}
}
else
{
Thread.Sleep(sleepTime);
}
}
listener.Close();
while (serverProcessingThread.IsAlive)
{
Thread.Sleep(sleepTime);
}
}
catch (ThreadAbortException)
{
}
catch (Exception exception)
{
Invoke((MethodInvoker)(() =>
{
StartServer.Enabled = true;
StopServer.Enabled = false;
ServerLog.Clear();
}));
MessageBox.Show(exception.Message);
}
}
private void ServerProcessing()
{
Queue <string> disconnected = new Queue <string>();
while (serverIsRunning)
{
for (int i = 0; i < clients.Count; ++i)
{
try
{
string request = "";
//чтение запроса
if ((request = ReceiveRequest(clients[i].Socket)).Length > 0)
{
JObject data = JObject.Parse(request);
string action = data.GetValue("action").ToString();
if (action == "send_message")
{
string message = data.GetValue("message").ToString();
string text = string.Format("[{0}]: {1}: {2}", DateTime.Now.ToString("H:m:ss"), clients[i].Name, message);
Invoke((MethodInvoker)(() =>
{
ServerLog.AppendText(text + Environment.NewLine);
}));
JObject response = new JObject();
response.Add("action", "message");
response.Add("message", text);
for (int j = 0; j < clients.Count; ++j)
{
SendRequest(clients[j].Socket, response);
}
}
else if (action == "disconnect")
{
disconnected.Enqueue(clients[i].Name);
}
}
//если клиент долго не отправлял запросов
else if ((DateTime.Now - clients[i].LastActivity).TotalSeconds > inactiveTimeout)
{
disconnected.Enqueue(clients[i].Name);
}
}
catch (Exception)
{
}
}
try
{
//удаление из очереди отключенных клиентов
if (disconnected.Count > 0)
{
while (disconnected.Count > 0)
{
string name = disconnected.Dequeue();
Client client = clients.Find(item => item.Name == name);
//уведомление клиента
JObject notification = new JObject();
notification.Add("action", "disconnect");
SendRequest(client.Socket, notification);
//удаление клиента
clients.RemoveAll(item => item.Name == name);
string text = string.Format("[{0}]: {1} disconnected", DateTime.Now.ToString("H:m:ss"), name);
Invoke((MethodInvoker)(() =>
{
ServerLog.AppendText(text + Environment.NewLine);
}));
//уведомление других клиентов
notification = new JObject();
notification.Add("action", "message");
notification.Add("message", text);
for (int j = 0; j < clients.Count; ++j)
{
SendRequest(clients[j].Socket, notification);
}
}
}
}
catch (Exception)
{
}
}
//отключение клиентов
for (int i = 0; i < clients.Count; ++i)
{
try
{
//уведомление клиента
JObject notification = new JObject();
notification.Add("action", "disconnect");
SendRequest(clients[i].Socket, notification);
clients[i].Socket.Close();
}
catch (Exception exception)
{
MessageBox.Show(exception.Message);
}
}
clients.Clear();
}
public void UpdateServerLog(string message, Color sendercolor)
{
try
{
if (ServerLog.InvokeRequired)
{
Invoke(updateServerLogDelegate, message, sendercolor);
}
else
{
ServerLog.SelectionStart = ServerLog.TextLength;
ServerLog.SelectionLength = 0;
ServerLog.SelectionColor = sendercolor;
List <string> messageComponents = new List <string>();
if (message.Contains(':'))
{
messageComponents.Add(message.Substring(0, message.IndexOf(':') + 1));
messageComponents.Add(message.Substring(message.IndexOf(':') + 1) + "\n");
}
else
{
messageComponents.Add(message + "\n");
}
for (int i = 0; i < messageComponents.Count; ++i)
{
while (messageComponents[i].Contains("<color"))
{
int startOfTag = messageComponents[i].IndexOf("<color (");
int endOfTag = messageComponents[i].IndexOf(")>");
string colorString = messageComponents[i].Substring(startOfTag + 8, endOfTag - startOfTag - 8);
string[] colors = colorString.Split(',');
ServerLog.AppendText(messageComponents[i].Substring(0, startOfTag));
if (colors.Length == 3)
{
int r = 0, g = 0, b = 0;
if (Int32.TryParse(colors[0], out r) && Int32.TryParse(colors[1], out g) && Int32.TryParse(colors[2], out b))
{
ServerLog.SelectionColor = Color.FromArgb(r, g, b);
}
}
ServerLog.AppendText(messageComponents[i].Substring(endOfTag + 2, messageComponents[i].IndexOf("</color>") - endOfTag - 2));
messageComponents[i] = messageComponents[i].Substring(messageComponents[i].IndexOf("</color>") + 8);
ServerLog.SelectionColor = ServerLog.ForeColor;
}
ServerLog.AppendText(messageComponents[i]);
ServerLog.SelectionColor = ServerLog.ForeColor;
}
ServerLog.SelectionStart = ServerLog.Text.Length;
ServerLog.ScrollToCaret();
}
}
catch (System.InvalidOperationException e)
{
Console.WriteLine(e.Message);
}
catch (InvalidAsynchronousStateException e)
{
Console.WriteLine(e.Message);
}
}
