/// <summary>
/// Initializes a new instance of the <see cref="TdsContext"/> class.
/// </summary>
/// <param name="wr">The wr.</param>
public TdsContext(TdsListenerContext wr)
{
_timeoutStartTimeUtcTicks = -1L;
_timeoutTicks = -1L;
_threadAbortOnTimeout = true;
ThreadContextId = new object();
_wr = wr;
Init(new TdsRequest(wr, this));
}
internal TdsRequest(TdsListenerContext wr, TdsContext context)
{
_wr = wr;
_context = context;
}
private bool CheckClientConnected(TdsListenerContext wr)
{
return ((DateTime.UtcNow - wr.GetStartTime()) > _clientConnectedTime ? wr.IsClientConnected() : true);
}
private void QueueRequest(TdsListenerContext wr, bool isLocal)
{
lock (this)
{
if (isLocal)
_localQueue.Enqueue(wr);
else
_externQueue.Enqueue(wr);
_count++;
}
}
private static bool IsLocal(TdsListenerContext wr)
{
var remoteAddress = wr.GetRemoteAddress();
switch (remoteAddress)
{
case "127.0.0.1":
case "::1":
return true;
}
if (string.IsNullOrEmpty(remoteAddress))
return false;
return (remoteAddress == wr.GetLocalAddress());
}
internal TdsListenerContext GetRequestToExecute(TdsListenerContext wr)
{
int workerThreads;
int completionPortThreads;
ThreadPool.GetAvailableThreads(out workerThreads, out completionPortThreads);
var threads = (completionPortThreads > workerThreads ? workerThreads : completionPortThreads);
if (threads < _minExternFreeThreads || _count != 0)
{
var isLocal = IsLocal(wr);
if (isLocal && threads >= _minLocalFreeThreads && _count == 0)
return wr;
if (_count >= _queueLimit)
{
_runtime.RejectRequestNow(wr, false);
return null;
}
QueueRequest(wr, isLocal);
if (threads >= _minExternFreeThreads)
{
wr = DequeueRequest(false);
return wr;
}
if (threads >= _minLocalFreeThreads)
{
wr = DequeueRequest(true);
return wr;
}
wr = null;
ScheduleMoreWorkIfNeeded();
}
return wr;
}
