protected void OnPingMessage(TCPMessage message)
{
using (IOStream stream = new IOStream(message.Content)) {
double rtt = 0;
bool error = stream.ReadDouble(out rtt);
string dateStr = null;
error = stream.ReadString(out dateStr);
RTT = rtt;
try {
if (error)
{
return;
}
DateTime sent = DateTime.Parse(dateStr, CultureInfo.InvariantCulture, DateTimeStyles.RoundtripKind);
Send(new TCPMessage()
{
Code = TCPMessageCode.Pong,
Content = Encoding.UTF8.GetBytes(sent.ToString("O"))
});
} catch (Exception er) {
Console.WriteLine("Error");
}
}
}
/// <summary>
/// Listen for incomming messages
/// </summary>
protected void Listen()
{
using (Stream = GetStream()) {
Writer = new TCPWriter(Stream);
Reader = new TCPReader(Stream);
if (Logging)
{
Logger.Write("SUCCESS", "Connected to the server");
}
OnConnected?.Invoke();
if (RequireHandshake)
{
byte[] rand = new byte[10];
RandomGen.Random.NextBytes(rand);
TCPMessage init = new TCPMessage()
{
Code = TCPMessageCode.Init,
Content = rand
};
if (Logging)
{
Logger.Write("INFO", "Sending handshake");
}
Send(init);
}
while (Running)
{
TCPMessage message = Reader.Read(Socket);
if (message == null)
{
Running = false;
OnDisconnected?.Invoke();
continue;
}
if (message.Code == TCPMessageCode.Init)
{
if (Logging)
{
Logger.Write("SUCCESS", "Successful handshake");
}
OnHandshake?.Invoke();
}
else if (message.Code == TCPMessageCode.Message)
{
OnMessage?.Invoke(message);
}
}
}
}
/// <summary>
/// Handle pong and rtt
/// </summary>
/// <param name="message"></param>
protected void HandlePong(TCPMessage message)
{
try {
string strDate = Encoding.UTF8.GetString(message.Content);
DateTime time = DateTime.Parse(strDate, CultureInfo.InvariantCulture, DateTimeStyles.RoundtripKind);
message.Client.RTT = ((DateTime.UtcNow.Ticks - time.Ticks) / 10000);
} catch (Exception er) {
if (Logging)
{
Logger.Write("FAILED", "Socket RTT failed", er);
}
}
}
/// <summary>
/// Sends message to the client
/// </summary>
/// <param name="message"></param>
public void Send(TCPMessage message)
{
Writer.Write(message);
}
/// <summary>
/// Write message to stream
/// </summary>
/// <param name="message"></param>
public void Write(TCPMessage message)
{
Write(message.Code, message.Content);
}
/// <summary>
/// Listen for new messages of individual clients
/// </summary>
/// <param name="client"></param>
protected void ListenClient(TCPServerClient client)
{
if (Logging)
{
Logger.Write("REGION", "Method [ListenClient]");
}
using (Stream ns = GetStream(client)) {
client.Stream = ns;
client.Writer = new TCPWriter(ns);
client.Reader = new TCPReader(ns);
if (Logging)
{
Logger.Write("INFO", "Created stream, writer and reader for client: " + client.UID);
}
lock (ClientsList) ClientsList.Add(client);
lock (ClientsDict) ClientsDict.Add(client.UID, client);
OnConnected?.Invoke(client);
if (RequireHandshake)
{
TCPMessage message = client.Reader.Read(client);
if (message.Code != TCPMessageCode.Init ||
message.Content.Length > 10)
{
RemoveClient(client, TCPDisconnectType.NoHandshake);
return;
}
if (Logging)
{
Logger.Write("SUCCESS", "Handshake: " + client.UID);
}
client.DoneHandshake = true;
client.Send(new TCPMessage()
{
Code = TCPMessageCode.Init,
Content = new byte[] { 0, 1, 0 }
});
}
while (Running && ClientsDict.ContainsKey(client.UID))
{
TCPMessage message = client.Reader.Read(client);
if (message == null)
{
RemoveClient(client, TCPDisconnectType.Timeout);
return;
}
if (Logging)
{
Logger.Write("INFO", "New message " + Enum.GetName(typeof(TCPMessageCode), message.Code) + " from user: " + client.UID);
}
if (message.Code == TCPMessageCode.Message)
{
OnMessage?.Invoke(client, message);
}
}
}
}
