internal override void ReleaseAndDisposeAll()
{
lock (padLock)
{
foreach (LinkedManagedSocket socket in sockets)
{
try
{
if (socket.Connected)
{
socket.Shutdown(SocketShutdown.Both);
}
socket.Close();
Interlocked.Decrement(ref activeSocketCount);
Interlocked.Decrement(ref socketCount);
}
catch (SocketException)
{
}
catch (ObjectDisposedException)
{
}
}
nextSocket = null;
}
}
private void PullSocketFromRotation(LinkedManagedSocket socket)
{
lock (padLock)
{
if (nextSocket != null)
{
if (socket == nextSocket)
{
nextSocket = nextSocket.Next;
spareSockets--;
}
else
{
LinkedManagedSocket pointer = nextSocket.Next;
LinkedManagedSocket prevPointer = null;
while (pointer != null && pointer != socket)
{
prevPointer = pointer;
pointer = pointer.Next;
}
if (pointer == socket && prevPointer != null && pointer != null)
{
prevPointer.Next = pointer.Next; //skip over it!
spareSockets--;
}
}
}
}
}
private LinkedManagedSocket BuildSocket()
{
LinkedManagedSocket socket = new LinkedManagedSocket(this.Settings, this);
socket.Connect(this.destination, this.Settings.ConnectTimeout);
Interlocked.Increment(ref socketCount);
return(socket);
}
internal override void ReleaseSocket(ManagedSocket socket)
{
try
{
if (socket.LastError != SocketError.Success || SocketAgedOut(socket))
{
//log.InfoFormat("releasing socket to {0} with status {1}", destination, socket.LastError);
DisposeSocket(socket);
}
else
{
if (!socket.Idle)
{
lock (padLock)
{
socket.Idle = true;
if (nextSocket == null)
{
nextSocket = (LinkedManagedSocket)socket;
spareSockets++;
}
else
{
LinkedManagedSocket newNextSocket = (LinkedManagedSocket)socket;
LinkedManagedSocket currentNextSocket = nextSocket;
newNextSocket.Next = currentNextSocket;
nextSocket = newNextSocket;
spareSockets++;
}
ExitLimiter();
}
Interlocked.Decrement(ref activeSocketCount);
}
}
}
catch (Exception ex)
{
if (log.IsErrorEnabled)
{
log.ErrorFormat("Exception releasing socket: {0}", ex);
}
}
}
public void PoolFiller()
{
do
{
Thread.Sleep(10000);
try
{
List <LinkedManagedSocket> disposeList = null;
lock (padLock)
{
LinkedManagedSocket socketPointer = nextSocket;
while (socketPointer != null)
{
if (SocketAgedOut(socketPointer))
{
LinkedManagedSocket expiredSocket = socketPointer;
socketPointer = socketPointer.Next;
PullSocketFromRotation(expiredSocket);
spareSockets--;
if (disposeList == null)
{
disposeList = new List <LinkedManagedSocket>();
}
disposeList.Add(expiredSocket);
}
else
{
socketPointer = socketPointer.Next;
}
}
}
if (disposeList != null)
{
disposeList.ForEach(expiredSocket => DisposeSocket(expiredSocket, false));
}
}
catch (Exception ex)
{
log.InfoFormat("poolfiller exception {0}", ex.Message);
}
} while (true);
}
internal override ManagedSocket GetSocket()
{
if (!EnterLimiter())
{
throw new SocketException((int)SocketError.TooManyOpenSockets);
}
List <LinkedManagedSocket> disposeList = null;
try
{
lock (padLock)
{
while (nextSocket != null)
{
// async receive could set an error at any time.
if (nextSocket.LastError == SocketError.Success)
{
var foundSocket = nextSocket;
// here we the first non-errored socket off of the linked list.
foundSocket.Idle = false;
nextSocket = foundSocket.Next;
spareSockets--;
foundSocket.Next = null;
Interlocked.Increment(ref activeSocketCount);
return(foundSocket);
}
else
{
// not null, has error
LinkedManagedSocket badSocket = nextSocket;
log.DebugFormat("Socket not used in state {0}", badSocket.LastError);
nextSocket = nextSocket.Next; // look at the next one
spareSockets--;
badSocket.Next = null;
if (disposeList == null)
{
disposeList = new List <LinkedManagedSocket>();
}
disposeList.Add(badSocket);
}
}
}
if (disposeList != null)
{
try
{
disposeList.ForEach(badSocket => DisposeSocket(badSocket, false));
}
catch (Exception ex)
{
log.InfoFormat("exception disposing sockets {0}", ex.Message);
}
disposeList = null;
}
// else, make a new one. which.. probably should not be able to happen.
var socket = BuildSocket();
lock (setLock)
{
sockets.Add(socket);
}
Interlocked.Increment(ref activeSocketCount);
return(socket);
}
catch
{
ExitLimiter();
throw;
}
finally
{
if (disposeList != null)
{
disposeList.ForEach(badSocket => DisposeSocket(badSocket, false));
}
}
}
internal override ManagedSocket GetSocket()
{
LinkedManagedSocket socket = null;
if (EnterLimiter())
{
try
{
lock (padLock)
{
LinkedManagedSocket foundSocket = null;
if (nextSocket != null)
{
while (foundSocket == null)
{
if (nextSocket == null) //might be upon second iteration of this loop
{
foundSocket = BuildSocket();
lock (setLock)
{
sockets.Add(foundSocket);
}
Interlocked.Increment(ref activeSocketCount);
break;
//return socket;
}
if (nextSocket.LastError == SocketError.Success) //async receive could set an error at any time.
{
foundSocket = nextSocket;
}
else //not null, has error
{
LinkedManagedSocket badSocket = nextSocket;
nextSocket = nextSocket.Next; //look at the next one
badSocket.Next = null;
DisposeSocket(badSocket, false);
}
}
//here we would've grabbed the first non-errored socket off of the linked list.
foundSocket.Idle = false;
nextSocket = foundSocket.Next;
foundSocket.Next = null;
Interlocked.Increment(ref activeSocketCount);
socket = foundSocket;
//return socket;
}
} //next socket was null. we no longer need a lock
if (socket != null) //found a good one on the list or built one in the loop
{
return(socket);
}
//else, make a new one. which.. probably should not be able to happen.
socket = BuildSocket();
lock (setLock)
{
sockets.Add(socket);
}
Interlocked.Increment(ref activeSocketCount);
return(socket);
}
catch
{
ExitLimiter();
throw;
}
}
throw new SocketException((int)SocketError.TooManyOpenSockets);
}
