public void Start()
{
if (serverSocket == null)
{
serverSocket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
IPEndPoint localEP = new IPEndPoint(IPAddress.Any, port);
serverSocket.Bind(localEP);
serverSocket.Listen(int.MaxValue);
isStopped = false;
new Thread(delegate
{
using (serverSocket)
{
while (!isStopped)
{
try
{
if (serverSocket.Poll(1000 * 10, SelectMode.SelectRead))
{
TcpSession session = new TcpSession(serverSocket.Accept());
session.DataReceived += new TcpSessionDataReceivedEventHandler(NetworkClient_DataReceived);
session.Disconnected += new TcpSessionEventHandler(NetworkClient_Disconnected);
sessions.Add(session);
if (SessionConnected != null)
SessionConnected(session);
session.Start();
}
}
catch (SocketException e)
{
if (e.ErrorCode != 10035)
break;
}
catch (Exception e)
{
Debug.Print(e.Message);
break;
}
Thread.Sleep(0);
}
}
serverSocket.Close();
serverSocket = null;
sessions.Clear();
}).Start();
}
}
private void Session_Disconnected(TcpSession session)
{
// TODO: release locos and accessories
}
private bool Session_DataReceived(TcpSession session, byte[] data)
{
BlinkLED(HWConfig.LEDNetwork);
NetworkMessageReceiver nmr = session.Tag as NetworkMessageReceiver;
NetworkMessage[] msgs = nmr.Process(data);
if (msgs != null)
foreach (NetworkMessage msg in msgs)
{
NetworkMessage response = ProcessNetworkMessage(msg);
if (response != null)
{
session.Send(WSDataFrame.WrapString(response.PackToString(nmr.MessageFormat)));
BlinkLED(HWConfig.LEDNetwork);
}
}
return false; // don't disconnect
}
private void Session_Connected(TcpSession session)
{
session.Tag = new NetworkMessageReceiver(msgFormat);
}
private void Session_Disconnected(TcpSession session)
{
}
private void NetworkClient_Disconnected(TcpSession session)
{
if (SessionDisconnected != null)
SessionDisconnected(session);
if (sessions.Contains(session))
sessions.Remove(session);
}
private bool NetworkClient_DataReceived(TcpSession session, byte[] data)
{
return SessionDataReceived != null ? SessionDataReceived(session, data) : false;
}
private bool tcpServer_SessionReceived(TcpSession session, byte[] data)
{
if (!session.IsHandshaked)
{
// from tablet:
/*
GET /Typhoon HTTP/1.1
Upgrade: WebSocket
Connection: Upgrade
Host: 192.168.0.102:2013
Origin: http://192.168.0.102:81
Sec-Websocket-Key: +d6dlnAp7rrQ3otS7Zvi7g==
Sec-WebSocket-Version: 13
+d6dlnAp7rrQ3otS7Zvi7g==: websocket
+d6dlnAp7rrQ3otS7Zvi7g==: Upgrade
*/
// from local:
/*
GET /Typhoon HTTP/1.1
Upgrade: WebSocket
Connection: Upgrade
Host: localhost:2013
Origin: http://localhost:81
Sec-Websocket-Key: K92AZtSFpS+9OgiwcPMheg==
Sec-WebSocket-Version: 13
K92AZtSFpS+9OgiwcPMheg==: websocket
K92AZtSFpS+9OgiwcPMheg==: x-webkit-deflate-frame
K92AZtSFpS+9OgiwcPMheg==: Upgrade
*/
// location: ws://localhost:2013
// origin: "http://localhost:81"
WSClientHandshake chs = WSClientHandshake.FromBytes(data);
//if (chs.IsValid && "ws://" + chs.Host == location && chs.Origin == origin)
//if (chs.IsValid && "ws://" + chs.Host == location)
if (chs.IsValid)
{
WSServerHandshake shs = new WSServerHandshake(chs.Key);
string stringShake = shs.ToString();
byte[] byteResponse = Encoding.UTF8.GetBytes(stringShake);
session.Send(byteResponse);
session.IsHandshaked = true;
// for debug:
//client.Send(WebSocketDataFrame.WrapString("Hello from server!!!"));
return false;
}
else
return true; // disconnect client
}
else
{
WSDataFrame frame = new WSDataFrame(data);
byte[] payload = null;
if (frame.IsValid() && frame.FIN)
payload = frame.GetPayload();
// for debug:
//string s = new string(Encoding.UTF8.GetChars(payload));
//string b = "";
//b += s;
return SessionDataReceived != null ? SessionDataReceived(session, payload) : false;
}
}
private void tcpServer_SessionDisconnected(TcpSession session)
{
if (SessionDisconnected != null)
SessionDisconnected(session);
}
private bool NetworkClient_DataReceived(TcpSession session, byte[] data)
{
return(SessionDataReceived != null?SessionDataReceived(session, data) : false);
}
