private void Execute(SocketPool pool, UseSocket use)
{
PooledSocket sock = null;
try
{
//Acquire a socket
sock = pool.Acquire();
//Use the socket as a parameter to the delegate and return its result.
if (sock != null)
{
use(sock);
}
}
catch (Exception e)
{
Console.WriteLine("Error in Execute: " + pool.Host);
//Socket is probably broken
if (sock != null)
{
sock.Close();
}
}
finally
{
if (sock != null)
{
sock.Dispose();
}
}
}
/// <summary>
/// private constructor. This method takes the array of hosts and sets up an private list of socketpools.
/// </summary>
public ServerPool(string[] hosts)
{
hostDictionary = new Dictionary <uint, SocketPool>();
List <SocketPool> pools = new List <SocketPool>();
List <uint> keys = new List <uint>();
foreach (string host in hosts)
{
//Create pool
SocketPool pool = new SocketPool(this, host.Trim());
//Create 250 keys for this pool, store each key in the hostDictionary, as well as in the list of keys.
for (int i = 0; i < 250; i++)
{
uint key = (uint)i;
if (!hostDictionary.ContainsKey(key))
{
hostDictionary[key] = pool;
keys.Add(key);
}
}
pools.Add(pool);
}
//Hostlist should contain the list of all pools that has been created.
HostList = pools.ToArray();
//Hostkeys should contain the list of all key for all pools that have been created.
//This array forms the server key continuum that we use to lookup which server a
//given item key hash should be assigned to.
keys.Sort();
hostKeys = keys.ToArray();
}
public PooledSocket(SocketPool socketPool, IPEndPoint endPoint, int sendReceiveTimeout)
{
this.socketPool = socketPool;
Created = DateTime.Now;
//Set up the socket.
socket = new Socket(endPoint.AddressFamily, SocketType.Stream, ProtocolType.Tcp);
socket.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.SendTimeout, sendReceiveTimeout);
socket.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.ReceiveTimeout, sendReceiveTimeout);
socket.ReceiveTimeout = sendReceiveTimeout;
socket.SendTimeout = sendReceiveTimeout;
//Do not use Nagle's Algorithm
socket.NoDelay = true;
//Establish connection
socket.Connect(endPoint);
//Wraps two layers of streams around the socket for communication.
stream = new BufferedStream(new NetworkStream(socket, false));
}
