/// <summary>
/// Broadcast clients number changed
/// </summary>
/// <param name="clientSocket"></param>
/// <param name="userName"></param>
/// <param name="changedUser"></param>
/// <param name="state"></param>
public void SendUsersList(Socket clientSocket, string userName, string changedUser, string state)
{
var data = new Data
{
Command = Command.Broadcast,
To = userName,
Message = string.Format("{0}|{1}|{2}|{3}",
string.Join(",", clients.Select(u => u.UserName).Where(name => name != userName)), changedUser, state,
serverName)
};
clientSocket.Send(data.ToByte());
}
/// <summary>
/// Parse client request
/// </summary>
/// <param name="state"></param>
/// <param name="handlerSocket"></param>
private void ParseRequest(ChatHelper.StateObject state, Socket handlerSocket)
{
var data = new Data(state.Buffer);
if (data.Command == Command.Disconnect)
{
DisconnectClient(state.WorkSocket);
return;
}
var clientStr = clients.FirstOrDefault(cl => cl.UserName == data.To);
if (clientStr == null)
return;
clientStr.Connection.Send(data.ToByte());
handlerSocket.BeginReceive(state.Buffer, 0, ChatHelper.StateObject.BUFFER_SIZE, 0,
OnReceive, state);
}
private bool ReceiveUsersList()
{
var bytes = new byte[1024];
server.Client.Receive(bytes);
var data = new Data(bytes);
var serverMessage = data.Message.Split(new[] { '|' }, StringSplitOptions.None);
if (data.Command == Command.NameExist)
{
MessageBox.Show(string.Format("Name \"{0}\" already exist on server", serverMessage[1]));
return false;
}
ServerName = serverMessage[3];
OnUserListReceived(serverMessage);
return true;
}
/// <summary>
/// Notify connecting user that specified name already exist
/// </summary>
/// <param name="clientSocket"></param>
/// <param name="name"></param>
public void SendNameAlreadyExist(Socket clientSocket, string name)
{
var data = new Data {Command = Command.NameExist, To = name};
clientSocket.Send(data.ToByte());
}
/// <summary>
/// Send message
/// </summary>
/// <param name="message"></param>
/// <param name="recipient"></param>
public void SendMessage(string message,string recipient)
{
var data = new Data {Command = Command.SendMessage, To = recipient, From = UserName, Message = message};
server.Client.Send(data.ToByte());
}
/// <summary>
/// Send call response to caller
/// </summary>
/// <param name="response"></param>
public void SendResponse(Command response)
{
var data = new Data {Command = response, To = udpSubscriber, From = UserName, ClientAddress = ClientAddress};
server.Client.Send(data.ToByte());
}
public void SendFile(byte[] file, string recipient, string fileName)
{
var data = new Data {Command = Command.SendFile, File = file, Message = fileName, To = recipient, From = UserName};
server.Client.Send(data.ToByte());
}
/// <summary>
/// Call to user
/// </summary>
/// <param name="recipient"></param>
public void SendChatRequest(string recipient)
{
var data = new Data {Command = Command.Call, To = recipient, From = UserName, ClientAddress = ClientAddress};
server.Client.Send(data.ToByte());
}
/// <summary>
/// Parse received message
/// </summary>
/// <param name="data"></param>
public void ParseMessage(Data data)
{
switch (data.Command)
{
case Command.SendMessage:
OnMessageReceived(data.Message, data.From);
break;
case Command.SendFile:
OnFileRecieved(data.File, data.From, data.Message);
break;
case Command.Broadcast:
OnUserListReceived(data.Message.Split('|'));
break;
case Command.Call:
if (!udpConnectionActive)
OnCallRecieved(data.From, data.ClientAddress);
SendResponse(Command.Busy);
break;
case Command.AcceptCall:
case Command.CancelCall:
case Command.EndCall:
case Command.Busy:
ParseResponse(data.From, data.Command, data.ClientAddress);
OnCallResponseReceived(data.Command);
break;
}
}
/// <summary>
/// Closes server connection
/// </summary>
public void CloseConnection()
{
IsConnected = false;
var data = new Data {Command = Command.Disconnect};
if (server.Client.Connected)
server.Client.Send(data.ToByte());
}
public void AnswerIncomingCall(string caller, string address, Command answer)
{
var data = new Data {Command = answer, From = UserName, To = caller, ClientAddress = ClientAddress};
if (answer == Command.AcceptCall)
{
udpSubscriber = caller;
StartVoiceChat(address);
}
server.Client.Send(data.ToByte());
}
