//Callback method invoked as a result of asynchronous connection request
public static void MDCConnected(IAsyncResult result)
{
Console.WriteLine("Connecting Thread : "
+ Thread.CurrentThread.GetHashCode());
AsyncStateInfo stateInfo = result.AsyncState as AsyncStateInfo;
Socket mdcSocket = stateInfo.socket;
//Successfully connects to market data server
mdcSocket.EndConnect(result);
//Begins asynchronous data receive operation
mdcSocket.BeginReceive(stateInfo.dataBuffer, 0, 512, SocketFlags.None,
new AsyncCallback(ReceiveData), stateInfo);
}
static void Main(string[] args)
{
Console.WriteLine("Market-Data Consumer Service Started -Using TCP(Async Model)");
Console.WriteLine("Main Thread : " + Thread.CurrentThread.GetHashCode());
IPEndPoint mdpEP = new IPEndPoint(IPAddress.Loopback, 20000);
Socket mdcSocket = new
Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
AsyncStateInfo stateInfo = new AsyncStateInfo(mdcSocket);
//Begins an asynchronous connection request
mdcSocket.BeginConnect(mdpEP, new AsyncCallback(MDCConnected), stateInfo);
Console.ReadLine();
if (mdcSocket.Connected == true)
{
mdcSocket.Shutdown(SocketShutdown.Both);
mdcSocket.Close();
}
}
//Callback method invoked as a result of asynchronous data receive request
public static void ReceiveData(IAsyncResult result)
{
Console.WriteLine("Receiving Thread : "
+ Thread.CurrentThread.GetHashCode());
AsyncStateInfo stateInfo = result.AsyncState as AsyncStateInfo;
Socket mdcSocket = stateInfo.socket;
//Successfully accepts data
int bytesReceived = mdcSocket.EndReceive(result);
if (bytesReceived > 0)
{
string mktPrice =
Encoding.ASCII.GetString(stateInfo.dataBuffer, 0, bytesReceived);
Console.WriteLine(mktPrice);
//Begins async. operation to receive more data sent by server
mdcSocket.BeginReceive(stateInfo.dataBuffer, 0, 512, SocketFlags.None,
new AsyncCallback(ReceiveData), stateInfo);
}
}
