private void btnSend_Click(object sender, EventArgs e)
{
string recipient = null;
try
{
recipient = listViewUsers.SelectedItems[0].Text;
}
catch (Exception ex)
{
MessageBox.Show("Please select one recipient");
return;
}
Chatroom.Message msg = new Chatroom.Message("MSG", textboxInput.Text);
msg.Sender = username;
msg.Recipient = recipient;
byte[] inputStream = Chatroom.SocketHelper.Serialize(msg);
stream.Write(inputStream, 0, inputStream.Length);
stream.Flush();
PrintMsg(username + ":" + textboxInput.Text);
textboxInput.Text = string.Empty;
}
private void ReceiveMessageListener(Object obj)
{
int i;
byte[] inputBytes = new byte[1024];
try
{
while ((i = stream.Read(inputBytes, 0, inputBytes.Length)) != 0)
{
Chatroom.Message msg = Chatroom.SocketHelper.Deserialize(inputBytes) as Chatroom.Message;
switch (msg.Header)
{
case "MSG":
PrintMsg("From" + msg.Sender + ": " + msg.Data as string);
break;
case "UPDATEUSER":
InitializeListView(msg.Data as string[]);
break;
default:
PrintMsg(msg.Data as string);
break;
}
stream.Flush();
inputBytes = new byte[1024];
}
}
catch (IOException ex)
{
PrintMsg("Server is shutted down!");
}
}
private void SendMessage(TcpClient socket, string header, object data, string sender = null, string recipient = null)
{
try
{
NetworkStream nwStream = socket.GetStream();
Chatroom.Message msg = new Chatroom.Message(header, data);
msg.Sender = sender;
msg.Recipient = recipient;
Byte[] replyBytes = Chatroom.SocketHelper.Serialize(msg);
nwStream.Write(replyBytes, 0, replyBytes.Length);
nwStream.Flush();
}
catch (Exception e)
{
Console.WriteLine("Exception: {0}", e.ToString());
}
}
private bool LoginByNewUsername(string username)
{
NetworkStream stream = client.GetStream();
Chatroom.Message msg = new Chatroom.Message("CREATEUSER", username);
Byte[] data = Chatroom.SocketHelper.Serialize(msg);
stream.Write(data, 0, data.Length);
stream.Flush();
Console.WriteLine("CREATEUSER:{0}", username);
data = new Byte[1];
String responseCode = String.Empty;
Int32 bytes = stream.Read(data, 0, data.Length);
responseCode = Encoding.ASCII.GetString(data);
if (responseCode == "1")
{
return(true);
}
return(false);
}
private void HandleDevice(Object obj)
{
TcpClient client = (TcpClient)obj;
var stream = client.GetStream();
Byte[] bytes = new Byte[1024];
Byte[] replyBytes = new Byte[1024];
int i;
try
{
while ((i = stream.Read(bytes, 0, bytes.Length)) != 0)
{
Chatroom.Message msg = Chatroom.SocketHelper.Deserialize(bytes) as Chatroom.Message;
switch (msg.Header)
{
case "CREATEUSER":
string newUser = msg.Data as string;
Console.WriteLine(">>Register new user: {0}", newUser);
string replyCode;
if (AddUser(msg.Data as string, client))
{
replyCode = "1";
}
else
{
replyCode = "0";
}
replyBytes = Encoding.ASCII.GetBytes(replyCode);
stream.Write(replyBytes, 0, replyBytes.Length);
stream.Flush();
Console.WriteLine(">>Reply code: {0}", replyCode);
UpdateUserListInAllClients();
Broadcast("NOTICE", newUser + " is online");
break;
case "MSG":
TcpClient recipientClient = clientsTable[msg.Recipient] as TcpClient;
SendMessage(recipientClient, "MSG", msg.Data as string, msg.Sender, msg.Recipient);
Console.WriteLine(msg.Sender + " => " + msg.Recipient + ": " + msg.Data as string);
break;
default:
Console.WriteLine(">>" + msg.Data as string);
break;
}
stream.Flush();
bytes = new Byte[1024];
}
}
catch (IOException e)
{
if (!client.Connected)
{
string user = GetUserName(client);
Console.WriteLine(">>Client " + user + " disconnect");
if (user != null)
{
DeleteUser(user);
UpdateUserListInAllClients();
Broadcast("NOTICE", user + " is offline");
}
Console.WriteLine(">>" + user + " is removed");
}
else
{
Console.WriteLine("Exception: {0}", e.ToString());
}
}
}
