public static void ServerStop()
{
try
{
if (sr_clientList.Count == 0)
{
if (ServerNetworkEngineServerStoppedEvent != null)
{
ServerNetworkEngineServerStoppedEvent.Invoke();
}
Status = false;
s_serverSocket.Close();
return;
}
Status = false;
if (ServerNetworkEngineServerStopBeganEvent != null)
{
ServerNetworkEngineServerStopBeganEvent.Invoke(sr_clientList.Count);
}
MessageStructure msgToSend = new MessageStructure
{
Command = Command.Disconnect
};
byte[] msgToSendByte = msgToSend.ToByte();
Task.Factory.StartNew(() =>
{
foreach (Client client in sr_clientList)
{
// Added only to slow down the progress bar advance for demonstration purposes
Thread.Sleep(150);
client.Socket.BeginSend(msgToSendByte, 0, msgToSendByte.Length, SocketFlags.None, OnSend, client.Socket);
}
});
s_serverSocket.Close();
}
catch (Exception ex)
{
MessageBox.Show(ex.Message + @" -> btnStopSrv_Click", @"Server", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
private static void OnReceive(IAsyncResult ar)
{
//if (!s_serverEngineStatus) {
// return;
//}
try
{
// Casting the AsyncState to a socket class
Socket receivedClientSocket = (Socket)ar.AsyncState;
receivedClientSocket.EndReceive(ar);
// Translating the array of received bytes to an intelligent class MessageStructure
MessageStructure msgReceived = new MessageStructure(sr_byteMessage);
// Constract the initial details of new object MessageStructure which will be sent out
MessageStructure msgToSend = new MessageStructure
{
UserName = msgReceived.UserName,
Command = msgReceived.Command,
ClientName = msgReceived.ClientName,
Color = msgReceived.Color
};
// Create a new byte[] class which will filled in the following case switch statment
byte[] messageBytes;
switch (msgReceived.Command)
{
case Command.Register:
msgToSend.Message = ServerDataEngine.Register(msgReceived.UserName, "Haven't logged in yet", "null", "Offline");
messageBytes = msgToSend.ToByte();
receivedClientSocket.Send(messageBytes, 0, messageBytes.Length, SocketFlags.None);
return;
case Command.AttemptLogin:
if (sr_clientList.Any(client => client.Name == msgReceived.ClientName))
{
msgToSend.Message = "This Name already in use";
messageBytes = msgToSend.ToByte();
receivedClientSocket.Send(messageBytes, 0, messageBytes.Length, SocketFlags.None);
receivedClientSocket.Close();
return;
}
if (ServerDataEngine.CheckIfRegistered(msgReceived.UserName) == 0)
{
msgToSend.Message = "No user found which matches this User name";
messageBytes = msgToSend.ToByte();
receivedClientSocket.Send(messageBytes, 0, messageBytes.Length, SocketFlags.None);
receivedClientSocket.Close();
return;
}
if (ServerDataEngine.CheckStatus(msgReceived.UserName) == "Online")
{
msgToSend.Message = "This User Name already logged in";
messageBytes = msgToSend.ToByte();
receivedClientSocket.Send(messageBytes, 0, messageBytes.Length, SocketFlags.None);
receivedClientSocket.Close();
return;
}
msgToSend.Command = Command.Login;
msgReceived.Command = Command.Login;
//messageBytes = msgToSend.ToByte();
//receivedClientSocket.BeginSend(messageBytes, 0, messageBytes.Length, SocketFlags.None, OnSend, receivedClientSocket);
goto case Command.Login;
case Command.Login:
// When the Login Command is received the ServerNetworkEngine will
// add that established connection (Socket) along
// with the provoided information to distinguish it (Name) to sr_clientList
// as a Client and sent the command Login to ohter clients to handle
// it on their end excluding the sending client
// and set the status of the new logged in client to online
Client newClient = new Client
{
UserName = msgReceived.UserName,
Name = msgReceived.ClientName,
Socket = receivedClientSocket,
Color = ColorTranslator.FromHtml(msgReceived.Color),
IpEndPoint = receivedClientSocket.RemoteEndPoint as IPEndPoint
};
// Adding the current handled established connection(client) to the connected _clientList
sr_clientList.Add(newClient);
// Setting the message to broadcast to all other clients
msgToSend.Message = "<<< " + newClient.Name + " has joined the room >>>";
ServerDataEngine.UpdateStatus(msgReceived.UserName, msgReceived.ClientName, "Online");
ServerDataEngine.UpdateDate(msgReceived.UserName, Time.NowTimeDate());
if (ServerNetworkEngineEngineClientToAddEvent != null)
{
ServerNetworkEngineEngineClientToAddEvent.Invoke(newClient.Name, newClient.IpEndPoint);
}
break;
case Command.Logout:
// When the Logout Command is received the ServerNetworkEngine will
// remove the the client from _clientList a long with all of
// it's information, socket/clientName etc..
// server engine will also stop listening to the removed socket
// and broadcast the message to all clients excluding the removed client
receivedClientSocket.Shutdown(SocketShutdown.Both);
receivedClientSocket.BeginDisconnect(true, (OnDisonnect), receivedClientSocket);
// Setting the message to broadcast to all other clients
msgToSend.Message = "<<< " + msgReceived.ClientName + " has just left the chat >>>";
// Removing client (established connection) _clientList
foreach (Client client in sr_clientList.Where(client => client.Socket == receivedClientSocket))
{
sr_clientList.Remove(client);
ServerDataEngine.UpdateStatus(client.UserName, msgReceived.ClientName, "Offline");
break;
}
if (ServerNetworkEngineClientToRemoveEvent != null)
{
ServerNetworkEngineClientToRemoveEvent.Invoke(msgReceived.ClientName);
}
break;
case Command.Disconnect:
receivedClientSocket.BeginDisconnect(true, (OnDisonnect), receivedClientSocket);
if (ServerNetworkEngineServerStopTickEvent != null)
{
ServerNetworkEngineServerStopTickEvent.Invoke(msgReceived.ClientName);
}
ServerDataEngine.UpdateStatus(msgReceived.UserName, msgReceived.ClientName, "Offline");
++s_disconnectCout;
if (sr_clientList.Count == s_disconnectCout)
{
if (ServerNetworkEngineServerStoppedEvent != null)
{
ServerNetworkEngineServerStoppedEvent.Invoke();
}
ServerDataEngine.ResetStatus();
}
break;
case Command.List:
// when the List command received serverEngine will send the names of all the
// clients(established coneections) back to the requesting (client) (established connection)
msgToSend.Command = Command.List;
Client lastItem = sr_clientList[sr_clientList.Count - 1];
//msgToSend.ClientName = lastItem.Name;
foreach (Client client in sr_clientList)
{
//To keep things simple we use a marker to separate the user names
msgToSend.Message += client.Name + ",";
}
// Convert msgToSend to a bytearray representative, this is needed in order to send(broadcat) the message over the TCP protocol
messageBytes = msgToSend.ToByte();
// Send(broadcast) the name of the estalished connections(cleints) in the chat
receivedClientSocket.BeginSend(messageBytes, 0, messageBytes.Length, SocketFlags.None, OnSend, receivedClientSocket);
break;
case Command.Message:
// Set the message which will be broadcasted to all the connected clients
ServerDataEngine.AddMessage(msgReceived.UserName, msgReceived.Message, Time.NowTimeDate(), "false", "null");
msgToSend.Message = msgReceived.Message;
if (ServerNetworkEngineSendPublicMessageEvent != null)
{
ServerNetworkEngineSendPublicMessageEvent.Invoke(msgToSend.ClientName, ColorTranslator.FromHtml(msgReceived.Color), msgToSend.Message);
}
break;
case Command.NameChange:
foreach (Client client in sr_clientList.Where(client => client.Name == msgReceived.ClientName))
{
client.Name = msgReceived.Message;
break;
}
msgToSend.Message = msgReceived.Message;
if (ServerNetworkEngineClientNameChangedEvent != null)
{
ServerNetworkEngineClientNameChangedEvent.Invoke(msgReceived.ClientName, msgReceived.Message);
}
ServerDataEngine.UpdateLoggedLastLogged(msgReceived.ClientName, msgReceived.Message);
goto case Command.ColorChanged;
case Command.ColorChanged:
Color newColor = ColorTranslator.FromHtml(msgToSend.Color);
foreach (Client client in sr_clientList.Where(client => client.Name == msgReceived.ClientName))
{
client.Color = newColor;
break;
}
msgToSend.Message = msgReceived.Message;
if (ServerNetworkEngineClientColorChangedEvent != null)
{
ServerNetworkEngineClientColorChangedEvent.Invoke(msgReceived.ClientName, newColor);
}
break;
case Command.PrivateStart:
foreach (Client client in sr_clientList.Where(client => client.Name == msgReceived.Private))
{
msgToSend.Private = msgReceived.Private;
messageBytes = msgToSend.ToByte();
client.Socket.BeginSend(messageBytes, 0, messageBytes.Length, SocketFlags.None, OnSend, client.Socket);
if (ServerNetworkEnginePrivateChatStartedEvent != null)
{
ServerNetworkEnginePrivateChatStartedEvent.Invoke(msgReceived.ClientName, msgReceived.Private);
}
break;
}
break;
case Command.PrivateMessage:
foreach (Client client in sr_clientList.Where(clientLinq => clientLinq.Name == msgReceived.Private))
{
msgToSend.Private = msgReceived.Private;
msgToSend.Message = msgReceived.Message;
messageBytes = msgToSend.ToByte();
client.Socket.BeginSend(messageBytes, 0, messageBytes.Length, SocketFlags.None, OnSend, client.Socket);
receivedClientSocket.BeginSend(messageBytes, 0, messageBytes.Length, SocketFlags.None, OnSend, receivedClientSocket);
if (ServerNetworkEnginePrivateChatMessageEvent != null)
{
ServerNetworkEnginePrivateChatMessageEvent.Invoke(msgReceived.ClientName, msgReceived.Private, msgReceived.Message);
}
ServerDataEngine.AddMessage(msgReceived.UserName, msgReceived.Message, Time.NowTimeDate(), client.UserName, "null");
break;
}
break;
case Command.PrivateStopped:
foreach (Client client in sr_clientList.Where(clientLinq => clientLinq.Name == msgReceived.Private))
{
msgToSend.Private = msgReceived.Private;
messageBytes = msgToSend.ToByte();
client.Socket.BeginSend(messageBytes, 0, messageBytes.Length, SocketFlags.None, OnSend, client.Socket);
receivedClientSocket.BeginSend(messageBytes, 0, messageBytes.Length, SocketFlags.None, OnSend, receivedClientSocket);
}
if (ServerNetworkEnginePrivateChatStoppedEvent != null)
{
ServerNetworkEnginePrivateChatStoppedEvent.Invoke(msgReceived.ClientName, msgReceived.Private);
}
break;
case Command.ImageMessage:
MemoryStream s_ms = new MemoryStream(msgReceived.ImgByte);
Image s_img = Image.FromStream(s_ms);
if (!Directory.Exists(@"Images\" + msgReceived.UserName))
{
Directory.CreateDirectory(@"Images\" + msgReceived.UserName);
}
if (msgReceived.Private != null)
{
if (ServerNetworkEngineImageMessageEvent != null)
{
ServerNetworkEngineImageMessageEvent.Invoke(s_img, msgReceived.ClientName, msgReceived.Private);
}
Task.Factory.StartNew(() =>
{
foreach (Client client in sr_clientList.Where(clientLinq => clientLinq.Name == msgReceived.Private))
{
msgToSend.Private = msgReceived.Private;
msgToSend.ImgByte = msgReceived.ImgByte;
messageBytes = msgToSend.ToByte();
client.Socket.BeginSend(messageBytes, 0, messageBytes.Length, SocketFlags.None, OnSend, client.Socket);
receivedClientSocket.BeginSend(messageBytes, 0, messageBytes.Length, SocketFlags.None, OnSend, receivedClientSocket);
ServerDataEngine.AddMessage(msgReceived.UserName, "null", Time.NowTimeDate(), client.UserName, @"Images\" + msgReceived.UserName + @"\" + Time.SaveTimeDate() + @"-" + client.UserName);
//s_img.Save(@"Images\" + msgReceived.Private + @"\" + Time.SaveTimeDate() + client.UserName + @".png");
s_img.Save(@"Images\" + msgReceived.UserName + @"\" + Time.SaveTimeDate() + @".png");
break;
}
});
break;
}
if (ServerNetworkEngineImageMessageEvent != null)
{
ServerNetworkEngineImageMessageEvent.Invoke(s_img, msgReceived.ClientName, msgReceived.Private);
}
msgToSend.ImgByte = msgReceived.ImgByte;
messageBytes = msgToSend.ToByte();
Task.Factory.StartNew(() =>
{
foreach (Client client in sr_clientList)
{
client.Socket.BeginSend(messageBytes, 0, messageBytes.Length, SocketFlags.None, OnSend, client.Socket);
ServerDataEngine.AddMessage(msgReceived.UserName, "null", Time.NowTimeDate(), "false", @"Images\" + msgReceived.UserName + @"\" + Time.SaveTimeDate());
s_img.Save(@"Images\" + msgReceived.UserName + @"\" + Time.SaveTimeDate() + @".png");
}
});
break;
}
// Send(broadcast) the message to clients (established connections)
Task.Factory.StartNew(() =>
{
if (msgToSend.Command != Command.List && msgToSend.Command != Command.PrivateStart && msgToSend.Command != Command.PrivateMessage && msgToSend.Command != Command.PrivateStopped && msgToSend.Command != Command.Disconnect && msgToSend.Command != Command.ImageMessage)
{
messageBytes = msgToSend.ToByte();
foreach (Client client in sr_clientList)
{
//if (client.Socket != receivedClientSocket || msgToSend.Command != Command.Login) {
client.Socket.BeginSend(messageBytes, 0, messageBytes.Length, SocketFlags.None, OnSend, client.Socket);
//}
}
}
});
// Continue listneing to receivedClientSocket established connection(client)
if (msgReceived.Command != Command.Logout && msgReceived.Command != Command.Disconnect && msgReceived.Command != Command.AttemptLogin && msgReceived.Command != Command.Register)
{
receivedClientSocket.BeginReceive(sr_byteMessage, 0, sr_byteMessage.Length, SocketFlags.None, OnReceive, receivedClientSocket);
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message + @" -> OnReceive", @"Server", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
