public void TestTokenMessage()
{
TokenMessage msg = new TokenMessage();
msg.EncodeHiddenComm("A", "B");
TokenMessage msgTwo = new TokenMessage();
msgTwo.Decode(msg.ToSend);
CompareTokenMessages(msg, msgTwo);
msg.EncodeMessage("C", "D", "hello!! :D |");
msgTwo.Decode(msg.ToSend);
CompareTokenMessages(msg, msgTwo);
}
private void CompareTokenMessages(TokenMessage msg, TokenMessage msgTwo)
{
Assert.AreEqual(msg.Destination, msgTwo.Destination);
Assert.AreEqual(msg.Sender, msgTwo.Sender);
Assert.AreEqual(msg.Token, msgTwo.Token);
Assert.AreEqual(msg.Info, msgTwo.Info);
int len = 0;
if (msg.ToSend.Length >= msgTwo.ToSend.Length)
{
len = msg.ToSend.Length;
}
else
{
len = msgTwo.ToSend.Length;
}
for (int i = 0; i < len; i++)
{
Assert.AreEqual(msg.ToSend[i], msgTwo.ToSend[i]);
}
}
/// <summary>
/// The instance so that we can send a message or token.
/// </summary>
private void sender()
{
int numConnected = 0;
while (numConnected != this.nodeCount)
{
lock (this.nodes)
{
numConnected = this.nodes.Count;
}
Thread.Sleep(100);
}
TokenMessage msg = new TokenMessage();
msg.EncodeHiddenComm(GlobalConst.serverName, GlobalConst.serverName);
lock (this.nodes)
{
NetworkStream stream = this.nodes.First().GetStream();
}
//Need to check the index
curIndex = 0;
this.tokenCount++;
lock (stopwatch)
{
stopwatch.Start();
}
//Send first token
//Set a stopwatch and then use that stopwatch here.
//Every time ANY tcpclient receives something, reset stopwatch.
//If the stopwatch runs out, resend token ad infinitum until SOMETHING tells it to stop
//That something is up to you.
while (!interrupted)
{
TcpClient client = null;
lock(this.nodes)
{
client = this.nodes[curIndex];
}
actuallySend(client, msg);
while (stopwatch.Elapsed.TotalSeconds < 5)
{
Thread.Sleep(2500);
if(!stopwatch.IsRunning)
{
stopwatch.Start();
}
}
}
}
/// <summary>
/// Handles the client comm. STarts a new thread for each node.
/// </summary>
/// <param name="clientObject">The client object.</param>
private void HandleClientComm(object clientObject)
{
try
{
TcpClient client = (TcpClient)clientObject;
NetworkStream clientStream = client.GetStream();
TokenMessage msg = new TokenMessage();
byte[] message;
int bytesRead;
while (true)
{
bytesRead = 0;
message = GlobalConst.getSpaceByteArray(GlobalConst.BUFSIZE);
try
{
//blocks until a client sends a message
bytesRead = clientStream.Read(message, 0, GlobalConst.BUFSIZE);
lock (stopwatch)
{
stopwatch.Reset();
}
//Console.WriteLine("Got a message on tokenHub");
//RESET STOPWATCH
}
catch
{
//a socket error has occured
break;
}
if (bytesRead == 0)
{
//the client has disconnected from the server
break;
}
bool good = msg.Decode(message);
if (msg.Token)
{
//SEND TOKEN TO NEXT PERSON
this.tokenCount++;
lock(this.nodes)
{
if (this.tokenCount >= this.nodes.Count)
{
break;
}
}
}
else if (!good)
{
continue;
}
else
{
this.tokenCount = 0;
}
int index = nodes.IndexOf(client) + 1;
int max = nodes.Count;
if (index >= max)
{
index = 0;
}
curIndex = index;
TcpClient clientNew = null;
lock(this.nodes)
{
clientNew = this.nodes[curIndex];
}
actuallySend(clientNew, msg);
//message has successfully been received
//Send it to the next node. get the index of the current tcpclient then call send.
}
}
catch (ThreadInterruptedException)
{
TcpClient c = (TcpClient)clientObject;
c.Close();
}
catch (Exception ex)
{
Console.WriteLine(ex);
}
}
/// <summary>
/// Actuallies the SwitchSend.
/// </summary>
/// <param name="client">The client.</param>
/// <param name="msg">The MSG.</param>
private void actuallySend(TcpClient client, TokenMessage msg)
{
stopwatch.Reset();
client.GetStream().Write(msg.ToSend, 0, msg.ToSend.Length);
client.GetStream().Flush();
}
/// <summary>
/// Tokens the sending.
/// </summary>
private void TokenSending()
{
int toSendCount = 0;
char[] sep = { ',' };
NetworkStream stream = this.client.GetStream();
lock (ToSend)
{
toSendCount = ToSend.Count;
}
try
{
while (toSendCount > 0)
{
while (!this.hasToken)
{
try
{
Thread.Sleep(Timeout.Infinite);
}
catch(ThreadAbortException)
{
throw;
}
catch
{
;
}
if (!this.hasToken)
{
Console.WriteLine("Sending for node {0} received an interrupt when it wasn't supposed to.", parentNode.Name);
}
}
String msgToSend = toSend.Peek();
String[] info = msgToSend.Split(sep, 2);
TokenMessage msg = new TokenMessage();
msg.EncodeMessage(this.parentNode.Name, info[0], info[1]);
if (this.parentNode.GetRandomNum() < GlobalConst.errorPerc)
{
msg.ToSend[4] = 0;
}
UseDelegate(stream, msg);
//ASSUMING NO ERRORS. Need to update once errors have been put in.
try
{
Thread.Sleep(GlobalConst.TokenTimer * 1000);
continue;
}
catch(ThreadAbortException)
{
throw;
}
catch
{
;
}
lock (ToSend)
{
toSendCount = this.toSend.Count;
}
}
this.doneSending = true;
}
catch (ThreadAbortException)
{
}
}
/// <summary>
/// Tokens the listening.
/// </summary>
private void TokenListening()
{
int bytesRead = 0;
int countTimesSent = 0;
byte[] message;
NetworkStream stream = this.client.GetStream();
TokenMessage token = new TokenMessage(); //Whenever we receive something, we ALWAYS send something back.
while (true)
{
bytesRead = 0;
message = GlobalConst.getSpaceByteArray(GlobalConst.BUFSIZE);
try
{
bytesRead = stream.Read(message, 0, GlobalConst.BUFSIZE);
}
catch
{
//socket error. WTF.
break;
}
if(bytesRead == 0)
{
break;
}
TokenMessage msg = new TokenMessage();
bool msgOK = msg.Decode(message);
if(msg.Token)
{
//Console.WriteLine("Got token on Node " + this.parentNode.Name);
this.hasToken = true;
if (this.senderThread.ThreadState.Equals(ThreadState.Stopped))
{
UseDelegate(stream, msg);
}
else
{
while (this.SenderThread.ThreadState.Equals(ThreadState.WaitSleepJoin) == false)
{
Thread.Sleep(50);
}
this.SenderThread.Interrupt();
}
}
else if (!msgOK)
{
Console.WriteLine("Got a bad message on Node " + this.parentNode.Name);
}
else
{
//Console.WriteLine("Got message on Node {0} ", this.parentNode.Name);
if (msg.Sender.Equals(this.parentNode.Name))
{
if (msg.FS == '1' || countTimesSent > 3)
{
this.toSend.Dequeue();
token.EncodeHiddenComm(GlobalConst.serverName, GlobalConst.serverName);
this.hasToken = false;
while (!this.senderThread.ThreadState.Equals(ThreadState.WaitSleepJoin))
{
Thread.Sleep(50);
}
this.SenderThread.Interrupt();
}
else
{
countTimesSent++;
token = msg;
}
}
else if (msg.Destination.Equals(this.parentNode.Name))
{
this.parentNode.writeOutMessage(msg);
token = msg;
token.FS = '1';
}
else
{
token = msg;
}
UseDelegate(stream, token);
}
}
this.doneReceiving = true;
if(!this.doneSending)
{
SenderThread.Abort();
}
while (!this.parentThread.ThreadState.Equals(ThreadState.WaitSleepJoin))
{
Thread.Sleep(100);
}
this.parentThread.Interrupt();
}
