void OnClientDisconnected(ChatClientHolder client)
{
var message = $"Client disconnected: {client.Name}.{Environment.NewLine}";
clients.Remove(client);
Console.Write(message);
BroadcastMessage(message);
}
void BroadcastMessage(string message, ChatClientHolder owner = null)
{
lock (clients)
{
byte[] writeBuffer = Encoding.UTF8.GetBytes(message);
foreach (var client in clients)
{
if ((owner == null) || (owner != client))
{
var stream = client.Client.GetStream();
stream.Write(writeBuffer, 0, writeBuffer.Length);
}
}
}
}
void ProcessClient(Task <TcpClient> task)
{
var client = task.Result;
var index = 0;
lock ( clients )
{
index = clients.Count;
}
var holder = new ChatClientHolder(client, index);
OnClientConnected(holder);
var stream = client.GetStream();
var readBuffer = new byte[1024];
while (true)
{
if (!IsClientConnected(client))
{
break;
}
try
{
var messageBuilder = new StringBuilder();
int readBytes = 0;
do
{
readBytes = stream.Read(readBuffer, 0, readBuffer.Length);
messageBuilder.AppendFormat("{0}", Encoding.UTF8.GetString(readBuffer, 0, readBytes));
}while(stream.DataAvailable);
if (messageBuilder.Length > 0)
{
var message = messageBuilder.ToString().TrimEnd();
message = $"{holder.Name}: \"{message}\"{Environment.NewLine}";
Console.WriteLine(message);
BroadcastMessage(message, holder);
}
}
catch (Exception e)
{
Console.WriteLine($"Exception in ProcessClient: {e.Message}");
break;
}
}
OnClientDisconnected(holder);
client.Dispose();
}
