private void HandleClient()
{
try
{
var auth = new AuthenticationServer(_chatserver, _client);
if (!auth.Authenticate())
{
throw new Exception();
}
_chatserver.Write(_client.GetStream(),
ChatProtocolValues.CONNECTION_MSG(auth.UserId));
Nickname = auth.UserId;
Room = _chatserver.AssignRoom(Nickname);
Console.WriteLine(Resources.RoomAssigned + Room + Resources.For + Nickname);
try
{
_chatserver.AddConnection(Nickname, _client);
}
catch
{
// ignored
}
_chatserver.Broadcast(ChatProtocolValues.Welcome(Nickname, Room), Room);
while ((_readdata = _chatserver.Read(_client.GetStream())) != "")
{
_readdata = _readdata.Trim();
Console.WriteLine(Resources.Read + _readdata);
if (_readdata.ToUpper().Substring(0, 1) == ChatProtocolValues.IsCmd)
{
_action = action_default;
if (
(_readdata.ToUpper() + ":").IndexOf(ChatProtocolValues.GetPicCmd, StringComparison.Ordinal) ==
0)
{
_action = action_get_pic;
}
if (
(_readdata.ToUpper() + ":").IndexOf(ChatProtocolValues.SendPicCmd, StringComparison.Ordinal) ==
0)
{
_action = action_send_pic;
}
if (
(_readdata.ToUpper() + ":").IndexOf(ChatProtocolValues.GetMediaCmd, StringComparison.Ordinal) ==
0)
{
_action = action_get_media;
}
if (
(_readdata.ToUpper() + ":").IndexOf(ChatProtocolValues.SendMediaCmd,
StringComparison.Ordinal) ==
0)
{
_action = action_send_media;
}
if ((_readdata.ToUpper() + " ").IndexOf(ChatProtocolValues.HelpCmd, StringComparison.Ordinal) ==
0)
{
_action = action_help;
}
if ((_readdata.ToUpper() + " ").IndexOf(ChatProtocolValues.QuitCmd, StringComparison.Ordinal) ==
0)
{
_action = action_quit;
}
if (
(_readdata.ToUpper() + " ").IndexOf(ChatProtocolValues.ChangeRoomCmd,
StringComparison.Ordinal) == 0)
{
_action = action_change_room;
}
if (
(_readdata.ToUpper() + " ").IndexOf(ChatProtocolValues.WhichRoomCmd,
StringComparison.Ordinal) ==
0)
{
_action = action_which_room;
}
if ((_readdata.ToUpper() + " ").IndexOf(ChatProtocolValues.ListCmd, StringComparison.Ordinal) ==
0)
{
_action = action_list;
}
if (
(_readdata.ToUpper() + ":").IndexOf(ChatProtocolValues.PrivateMsgCmd,
StringComparison.Ordinal) == 0)
{
_action = action_private_message;
}
}
else
{
_action = action_send_message;
}
_action();
}
}
catch (Exception e)
{
Console.WriteLine(Resources.ErrorFromServer);
Console.WriteLine(Resources.Stars);
Console.WriteLine(e);
Console.WriteLine(Resources.Stars);
Console.WriteLine(Resources.WaitingForConnection);
}
finally
{
try
{
_chatserver.Write(_client.GetStream(), ChatProtocolValues.QuitMsg);
}
catch
{
// ignored
}
if (Room != 0 && Nickname != "")
{
_chatserver.RemoveRoomUser(_chatserver.RoomUsers[Room - 1], Nickname);
_chatserver.Broadcast(ChatProtocolValues.USER_LOG_OUT(Nickname, Room));
}
try
{
_chatserver.RemoveConnection(Nickname, _client);
}
catch
{
// ignored
}
}
}
//The main method that handle all the chat communication with the client
private void HandleClient()
{
try
{
//Autheticate the user
AuthenticationServer auth = new AuthenticationServer(chatserver, client);
if (!auth.Authenticate())
{
throw(new Exception());
}
//Send connection message to client
//returning the user id
chatserver.Write(client.GetStream(),
ChatProtocolValues.CONNECTION_MSG(auth.UserID));
//buffer
byte[] bytes = new byte[256];
//set nickname as user id which is alraedy unique
nickname = auth.UserID;
//Assign a room to connected client
room = chatserver.AssignRoom(nickname);
Console.WriteLine("room assigned= " + room + " for " + nickname);
//Add to Connections
try
{
chatserver.AddConnection(nickname, client);
}
catch {}
//Broadcast to chat room about the new user
chatserver.Broadcast(ChatProtocolValues.WELCOME(nickname, room), room);
//listen to all client data send
while ((readdata = chatserver.Read(client.GetStream())) != "")
{
readdata = readdata.Trim();
//Print out read data in console
Console.WriteLine("Read>" + readdata);
//Check if the readdata is a command
if (readdata.ToUpper().Substring(0, 1) == ChatProtocolValues.IS_CMD)
{
//Assign a default action
action = new SocketHelperAction(action_default);
//Reassign action based on format content
if ((readdata.ToUpper() + ":").IndexOf(ChatProtocolValues.GET_PIC_CMD) == 0)
{
action = new SocketHelperAction(action_get_pic);
}
if ((readdata.ToUpper() + ":").IndexOf(ChatProtocolValues.SEND_PIC_CMD) == 0)
{
action = new SocketHelperAction(action_send_pic);
}
if ((readdata.ToUpper() + ":").IndexOf(ChatProtocolValues.GET_MEDIA_CMD) == 0)
{
action = new SocketHelperAction(action_get_media);
}
if ((readdata.ToUpper() + ":").IndexOf(ChatProtocolValues.SEND_MEDIA_CMD) == 0)
{
action = new SocketHelperAction(action_send_media);
}
if ((readdata.ToUpper() + " ").IndexOf(ChatProtocolValues.HELP_CMD) == 0)
{
action = new SocketHelperAction(action_help);
}
if ((readdata.ToUpper() + " ").IndexOf(ChatProtocolValues.QUIT_CMD) == 0)
{
action = new SocketHelperAction(action_quit);
}
if ((readdata.ToUpper() + " ").IndexOf(ChatProtocolValues.CHANGE_ROOM_CMD) == 0)
{
action = new SocketHelperAction(action_change_room);
}
if ((readdata.ToUpper() + " ").IndexOf(ChatProtocolValues.WHICH_ROOM_CMD) == 0)
{
action = new SocketHelperAction(action_which_room);
}
if ((readdata.ToUpper() + " ").IndexOf(ChatProtocolValues.LIST_CMD) == 0)
{
action = new SocketHelperAction(action_list);
}
if ((readdata.ToUpper() + ":").IndexOf(ChatProtocolValues.PRIVATE_MSG_CMD) == 0)
{
action = new SocketHelperAction(action_private_message);
}
}
else //NON COMMAND
{
//if not a command assign to a mesage sending action
action = new SocketHelperAction(action_send_message);
} //COMMANDS
//perform the action
action();
} //WHILE
}
catch (Exception e)
{
//Trapped exception
Console.WriteLine("The following error is trapped by the chat server");
Console.WriteLine("*************************************************");
Console.WriteLine(e);
Console.WriteLine("*************************************************");
Console.WriteLine("Waiting for Connection...");
}
finally
{
//while loop ended or when there are some other problems
//try to inform client to shut down
try
{
chatserver.Write(client.GetStream(), ChatProtocolValues.QUIT_MSG);
}
catch {}
//if the client had belong to a room
if ((room != 0) && (nickname != ""))
{
//remove user from room
chatserver.RemoveRoomUser(chatserver.RoomUsers[room - 1], nickname);
//inform all that the client has logged out
chatserver.Broadcast(ChatProtocolValues.USER_LOG_OUT(nickname, room));
}
//remove the client connection
try
{
chatserver.RemoveConnection(nickname, client);
}
catch {}
}
}
