public static void ProcessClientRequest(IAsyncResult ar)
{
// Retrieve the state object and the handler socket
// from the asynchronous state object.
StateObject state = (StateObject)ar.AsyncState;
Socket handler = state.workSocket;
string input;
IPEndPoint remoteIpEndPoint = handler.RemoteEndPoint as IPEndPoint;
try
{
String content = String.Empty;
int ptr = 0;
//Getting the current thread id
int utid = GetCurrentThreadId();
foreach (ProcessThread pt in Process.GetCurrentProcess().Threads)
{
//When the incoming thread id matches the process thread id
if (utid == pt.Id)
{
//Mutex lock starts here, allows only one thread to enter
ft.WaitOne();
ptr = (int)Math.Pow(2, (currProcessor - 1));
//Sets affinity to current thread, so as to process one thread per processor
pt.ProcessorAffinity = (IntPtr)ptr;
currProcessor++;
//Gets current processor number where the thread is running
int coreid = GetCurrentProcessorNumber();
Console.WriteLine("The current thread id {0} processing the client {1}:{2} runs in the processor: {3} ",
utid, remoteIpEndPoint.Address, remoteIpEndPoint.Port, coreid);
//If all the cores are assigned with one thread per core, then resetting the curprocessor value to one,
//so as to form a round robin allocation
if (currProcessor > Environment.ProcessorCount)
{
currProcessor = 1;
}
ft.ReleaseMutex();
//Mutex lock ends here
break;
}
}
// Read data from the client socket.
int bytesRead = handler.EndReceive(ar);
if (bytesRead > 0)
{
// There might be more data, so store the data received so far.
state.sb.Append(Encoding.ASCII.GetString(
state.buffer, 0, bytesRead));
// Check for end-of-file tag. If it is not there, read more data.
content = state.sb.ToString();
if (content.IndexOf("<EOF>") > -1)
{
input = content.Remove(content.IndexOf("<EOF>"));
//Displaying the data received from the client
Console.WriteLine("Data Received: {0} in the Thread Id: {1} at {2} from the Client located at IPaddress:{3} and port {4}",
input, GetCurrentThreadId(), DateTime.Now.ToString("MM/dd/yyyy HH:mm:ss.ff"), remoteIpEndPoint.Address, remoteIpEndPoint.Port);
//Mutex starts to handle critical code
mt.WaitOne();
//Function call to KeyvalueDictionary
string output = KeyValueStore.KeyValueDictionary(input);
mt.ReleaseMutex(); //Mutex Ends here
// Echo the data back to the client.
Send(handler, output);
}
else
{
// Not all data received. Get more.
handler.BeginReceive(state.buffer, 0, StateObject.BufferSize, 0,
new AsyncCallback(ProcessClientRequest), state);
}
}
}
catch (SocketException se)
{
Console.WriteLine("The Client connected from IP address: " +
remoteIpEndPoint.Address + " on port number: " + remoteIpEndPoint.Port +
" got disconnected at the time stamp: " + DateTime.Now.ToString("MM/dd/yyyy HH:mm:ss.ff"));
handler.Shutdown(SocketShutdown.Both);
handler.Close();
}
}
