public void PutSocket(CustomSocket socket)
{
DebugLogging.Log("Put Socket -> Pool size: " + availableSockets.Count.ToString());
lock (availableSockets)
{
TimeSpan socketLifeTime = DateTime.Now.Subtract(socket.TimeCreated);
if (availableSockets.Count < POOL_MAX_SIZE && socketLifeTime.Seconds < EXPIRE_SECONDS)
{
if (socket != null)
{
if (socket.Connected)
{
availableSockets.Enqueue(socket);
DebugLogging.Log("Socket Queued -> Pool size: " + availableSockets.Count.ToString());
}
else
{
socket.Close();
}
}
}
else
{
socket.Close();
DebugLogging.Log("PutSocket - Socket is forced " +
"to closed -> Pool size: " +
availableSockets.Count.ToString());
}
}
}
public CustomSocket GetSocket()
{
DebugLogging.Log("Get Socket -> Pool size: " + availableSockets.Count.ToString());
if (availableSockets.Count > 0)
{
lock (availableSockets)
{
CustomSocket socket = null;
while (availableSockets.Count > 0)
{
socket = availableSockets.Dequeue();
if (socket.Connected)
{
DebugLogging.Log("Socket Dequeued -> Pool size: " +
availableSockets.Count.ToString());
return(socket);
}
else
{
socket.Close();
System.Threading.Interlocked.Decrement(ref SocketCounter);
DebugLogging.Log("GetSocket -- Close -- Count: " +
SocketCounter.ToString());
}
}
}
}
return(ConnectSocket());
}
private static string SocketSendReceive(string viewer, string owner, string gadget)
{
// These keys need to match what you see in edu.ucsf.profiles.shindig.service.SecureTokenGeneratorService in Shindig
string request = "c=default" + (viewer != null ? "&v=" + HttpUtility.UrlEncode(viewer) : "") +
(owner != null ? "&o=" + HttpUtility.UrlEncode(owner) : "") + "&u=" + HttpUtility.UrlEncode(gadget) + "\r\n";
Byte[] bytesSent = System.Text.Encoding.ASCII.GetBytes(request);
Byte[] bytesReceived = new Byte[256];
// Create a socket connection with the specified server and port.
//Socket s = ConnectSocket(tokenService[0], Int32.Parse(tokenService[1]));
// during startup we might fail a few times, so be will to retry
string page = "";
for (int i = 0; i < 3 && page.Length == 0; i++)
{
CustomSocket s = null;
try
{
s = sockets.GetSocket();
if (s == null)
{
return("Connection failed");
}
// Send request to the server.
DebugLogging.Log("Sending Bytes");
s.Send(bytesSent, bytesSent.Length, 0);
// Receive the server home page content.
int bytes = 0;
// The following will block until te page is transmitted.
do
{
DebugLogging.Log("Receiving Bytes");
bytes = s.Receive(bytesReceived, bytesReceived.Length, 0);
page = page + Encoding.ASCII.GetString(bytesReceived, 0, bytes);
DebugLogging.Log("Socket Page=" + page + "|");
}while (page.Length == page.TrimEnd().Length&& bytes > 0);
}
catch (Exception ex)
{
DebugLogging.Log("Socket Error :" + ex.Message);
page = "";
}
finally
{
if (sockets != null)
{
sockets.PutSocket(s);
}
}
}
return(page.TrimEnd());
}
public SocketConnectionPool(string server, int port, int minConnections, int maxConnections, int expire, int timeout)
{
this.POOL_MAX_SIZE = maxConnections;
this.POOL_MIN_SIZE = minConnections;
this.EXPIRE_SECONDS = expire;
this.RECIEVE_TIMEOUT = timeout;
this.server = server;
this.port = port;
this.availableSockets = new Queue <CustomSocket>();
for (int i = 0; i < minConnections; i++)
{
CustomSocket cachedSocket = ConnectSocket();
PutSocket(cachedSocket);
}
DebugLogging.Log("Connection Pool is initialized" +
" with Max Number of " +
POOL_MAX_SIZE.ToString() + " And Min number of " +
availableSockets.Count.ToString());
}
private CustomSocket ConnectSocket()
{
CustomSocket s = null;
IPHostEntry hostEntry = null;
// Get host related information.
hostEntry = Dns.GetHostEntry(server);
// Loop through the AddressList to obtain the supported AddressFamily. This is to avoid
// an exception that occurs when the host IP Address is not compatible with the address family
// (typical in the IPv6 case).
foreach (IPAddress address in hostEntry.AddressList)
{
IPEndPoint ipe = new IPEndPoint(address, port);
CustomSocket tempSocket =
new CustomSocket(ipe.AddressFamily, SocketType.Stream, ProtocolType.Tcp);
try
{
tempSocket.Connect(ipe);
}
catch
{
// ignore error, move on to the next entry
}
if (tempSocket.Connected)
{
s = tempSocket;
s.ReceiveTimeout = RECIEVE_TIMEOUT;
break;
}
else
{
continue;
}
}
return(s);
}
private CustomSocket ConnectSocket()
{
CustomSocket s = null;
IPHostEntry hostEntry = null;
// Get host related information.
hostEntry = Dns.GetHostEntry(server);
// Loop through the AddressList to obtain the supported AddressFamily. This is to avoid
// an exception that occurs when the host IP Address is not compatible with the address family
// (typical in the IPv6 case).
foreach (IPAddress address in hostEntry.AddressList)
{
IPEndPoint ipe = new IPEndPoint(address, port);
CustomSocket tempSocket =
new CustomSocket(ipe.AddressFamily, SocketType.Stream, ProtocolType.Tcp);
try
{
tempSocket.Connect(ipe);
}
catch
{
// ignore error, move on to the next entry
}
if (tempSocket.Connected)
{
s = tempSocket;
s.ReceiveTimeout = RECIEVE_TIMEOUT;
break;
}
else
{
continue;
}
}
return s;
}
public void PutSocket(CustomSocket socket)
{
DebugLogging.Log("Put Socket -> Pool size: " + availableSockets.Count.ToString());
lock (availableSockets)
{
TimeSpan socketLifeTime = DateTime.Now.Subtract(socket.TimeCreated);
if (availableSockets.Count < POOL_MAX_SIZE && socketLifeTime.Seconds < EXPIRE_SECONDS)
{
if (socket != null)
{
if (socket.Connected)
{
availableSockets.Enqueue(socket);
DebugLogging.Log("Socket Queued -> Pool size: " + availableSockets.Count.ToString());
}
else
{
socket.CloseNice();
}
}
}
else
{
socket.CloseNice();
DebugLogging.Log("PutSocket - Socket is forced " +
"to closed -> Pool size: " +
availableSockets.Count.ToString());
}
}
}
