// Reset the expire time of an item based on its timeout value
public override void ResetItemTimeout(HttpContext context, String id)
{
string key = CreateSessionStateCacheKey(id);
SessionIDManager.CheckIdLength(id, true /* throwOnFail */);
HttpRuntime.CacheInternal.Get(key);
}
public override void RemoveItem(HttpContext context, string id, object lockId, SessionStateStoreData item)
{
string key = this.CreateSessionStateCacheKey(id);
CacheInternal cacheInternal = HttpRuntime.CacheInternal;
int num = (int)lockId;
SessionIDManager.CheckIdLength(id, true);
InProcSessionState state = (InProcSessionState)cacheInternal.Get(key);
if (state != null)
{
state._spinLock.AcquireWriterLock();
try
{
if (!state._locked || (state._lockCookie != num))
{
return;
}
state._lockCookie = 0;
}
finally
{
state._spinLock.ReleaseWriterLock();
}
cacheInternal.Remove(key);
}
}
// Unlock an item locked by GetExclusive
// 'lockId' is the lock context returned by previous call to GetExclusive
public override void ReleaseItemExclusive(HttpContext context,
String id,
object lockId)
{
Debug.Assert(lockId != null, "lockId != null");
string key = CreateSessionStateCacheKey(id);
int lockCookie = (int)lockId;
SessionIDManager.CheckIdLength(id, true /* throwOnFail */);
InProcSessionState state = (InProcSessionState)HttpRuntime.CacheInternal.Get(key);
/* If the state isn't there, we probably took too long to run. */
if (state == null)
{
return;
}
if (state._locked)
{
state._spinLock.AcquireWriterLock();
try {
if (state._locked && lockCookie == state._lockCookie)
{
state._locked = false;
}
}
finally {
state._spinLock.ReleaseWriterLock();
}
}
}
public override void CreateUninitializedItem(HttpContext context, string id, int timeout)
{
string key = this.CreateSessionStateCacheKey(id);
SessionIDManager.CheckIdLength(id, true);
InProcSessionState state = new InProcSessionState(null, null, timeout, false, DateTime.MinValue, NewLockCookie, 1);
try
{
}
finally
{
if (HttpRuntime.CacheInternal.UtcAdd(key, state, null, Cache.NoAbsoluteExpiration, new TimeSpan(0, timeout, 0), CacheItemPriority.NotRemovable, this._callback) == null)
{
PerfCounters.IncrementCounter(AppPerfCounter.SESSIONS_TOTAL);
PerfCounters.IncrementCounter(AppPerfCounter.SESSIONS_ACTIVE);
}
}
}
// Remove an item. Note that the item is originally obtained by GetExclusive
// Same note as Set on lockId
public override void RemoveItem(HttpContext context,
String id,
object lockId,
SessionStateStoreData item)
{
Debug.Assert(lockId != null, "lockId != null");
string key = CreateSessionStateCacheKey(id);
CacheInternal cacheInternal = HttpRuntime.CacheInternal;
int lockCookie = (int)lockId;
SessionIDManager.CheckIdLength(id, true /* throwOnFail */);
InProcSessionState state = (InProcSessionState)cacheInternal.Get(key);
/* If the item isn't there, we probably took too long to run. */
if (state == null)
{
return;
}
state._spinLock.AcquireWriterLock();
try {
/* Only remove the item if we are the owner */
if (!state._locked || state._lockCookie != lockCookie)
{
return;
}
/* prevent overwriting when we drop the lock */
state._lockCookie = 0;
}
finally {
state._spinLock.ReleaseWriterLock();
}
cacheInternal.Remove(key);
TraceSessionStats();
}
public override void CreateUninitializedItem(HttpContext context, String id, int timeout)
{
string key = CreateSessionStateCacheKey(id);
Debug.Assert(timeout <= SessionStateModule.MAX_CACHE_BASED_TIMEOUT_MINUTES, "item.Timeout <= SessionStateModule.MAX_CACHE_BASED_TIMEOUT_MINUTES");
SessionIDManager.CheckIdLength(id, true /* throwOnFail */);
Debug.Trace("SessionStateClientSet", "Inserting an uninitialized item into Cache; key = " + key);
InProcSessionState state = new InProcSessionState(
null,
null,
timeout,
false,
DateTime.MinValue,
NewLockCookie,
(int)SessionStateItemFlags.Uninitialized);
// DevDivBugs 146875
// We do not want to overwrite an item with an uninitialized item if it is
// already in the cache
try {
}
finally {
// protected from ThreadAbortEx
object existingEntry = HttpRuntime.Cache.InternalCache.Add(key, state, new CacheInsertOptions()
{
SlidingExpiration = new TimeSpan(0, timeout, 0),
Priority = CacheItemPriority.NotRemovable,
OnRemovedCallback = _callback
});
if (existingEntry == null)
{
PerfCounters.IncrementCounter(AppPerfCounter.SESSIONS_TOTAL);
PerfCounters.IncrementCounter(AppPerfCounter.SESSIONS_ACTIVE);
}
}
}
public override void ReleaseItemExclusive(HttpContext context, string id, object lockId)
{
string key = this.CreateSessionStateCacheKey(id);
int num = (int)lockId;
SessionIDManager.CheckIdLength(id, true);
InProcSessionState state = (InProcSessionState)HttpRuntime.CacheInternal.Get(key);
if ((state != null) && state._locked)
{
state._spinLock.AcquireWriterLock();
try
{
if (state._locked && (num == state._lockCookie))
{
state._locked = false;
}
}
finally
{
state._spinLock.ReleaseWriterLock();
}
}
}
void MakeRequest(
UnsafeNativeMethods.StateProtocolVerb verb,
String id,
UnsafeNativeMethods.StateProtocolExclusive exclusiveAccess,
int extraFlags,
int timeout,
int lockCookie,
byte[] buf,
int cb,
int networkTimeout,
out UnsafeNativeMethods.SessionNDMakeRequestResults results)
{
int hr;
string uri;
OutOfProcConnection conn = null;
HandleRef socketHandle;
bool checkVersion = false;
Debug.Assert(timeout <= SessionStateModule.MAX_CACHE_BASED_TIMEOUT_MINUTES, "item.Timeout <= SessionStateModule.MAX_CACHE_BASED_TIMEOUT_MINUTES");
SessionIDManager.CheckIdLength(id, true /* throwOnFail */);
if (_partitionInfo == null)
{
Debug.Assert(s_partitionManager != null);
Debug.Assert(_partitionResolver != null);
_partitionInfo = (StateServerPartitionInfo)s_partitionManager.GetPartition(_partitionResolver, id);
// If its still null, we give up
if (_partitionInfo == null)
{
throw new HttpException(SR.GetString(SR.Bad_partition_resolver_connection_string, "PartitionManager"));
}
}
// Need to make sure we dispose the connection if anything goes wrong
try {
conn = (OutOfProcConnection)_partitionInfo.RetrieveResource();
if (conn != null)
{
socketHandle = new HandleRef(this, conn._socketHandle.Handle);
}
else
{
socketHandle = new HandleRef(this, INVALID_SOCKET);
}
if (_partitionInfo.StateServerVersion == -1)
{
// We don't need locking here because it's okay to have two
// requests initializing s_stateServerVersion.
checkVersion = true;
}
Debug.Trace("OutOfProcSessionStateStoreMakeRequest",
"Calling MakeRequest, " +
"socket=" + (IntPtr)socketHandle.Handle +
"verb=" + verb +
" id=" + id +
" exclusiveAccess=" + exclusiveAccess +
" timeout=" + timeout +
" buf=" + ((buf != null) ? "non-null" : "null") +
" cb=" + cb +
" checkVersion=" + checkVersion +
" extraFlags=" + extraFlags);
// Have to UrlEncode id because it may contain non-URL-safe characters
uri = HttpUtility.UrlEncode(s_uribase + id);
hr = UnsafeNativeMethods.SessionNDMakeRequest(
socketHandle, _partitionInfo.Server, _partitionInfo.Port, _partitionInfo.ServerIsIPv6NumericAddress /* forceIPv6 */, networkTimeout, verb, uri,
exclusiveAccess, extraFlags, timeout, lockCookie,
buf, cb, checkVersion, out results);
Debug.Trace("OutOfProcSessionStateStoreMakeRequest", "MakeRequest returned: " +
"hr=" + hr +
" socket=" + (IntPtr)results.socket +
" httpstatus=" + results.httpStatus +
" timeout=" + results.timeout +
" contentlength=" + results.contentLength +
" uri=" + (IntPtr)results.content +
" lockCookie=" + results.lockCookie +
" lockDate=" + string.Format("{0:x}", results.lockDate) +
" lockAge=" + results.lockAge +
" stateServerMajVer=" + results.stateServerMajVer +
" actionFlags=" + results.actionFlags);
if (conn != null)
{
if (results.socket == INVALID_SOCKET)
{
conn.Detach();
conn = null;
}
else if (results.socket != socketHandle.Handle)
{
// The original socket is no good. We've got a new one.
// Pleae note that EnsureConnected has closed the bad
// one already.
conn._socketHandle = new HandleRef(this, results.socket);
}
}
else if (results.socket != INVALID_SOCKET)
{
conn = new OutOfProcConnection(results.socket);
}
if (conn != null)
{
_partitionInfo.StoreResource(conn);
}
}
catch {
// We just need to dispose the connection if anything bad happened
if (conn != null)
{
conn.Dispose();
}
throw;
}
if (hr != 0)
{
HttpException e = CreateConnectionException(_partitionInfo.Server, _partitionInfo.Port, hr);
string phase = null;
switch (results.lastPhase)
{
case (int)UnsafeNativeMethods.SessionNDMakeRequestPhase.Initialization:
phase = SR.GetString(SR.State_Server_detailed_error_phase0);
break;
case (int)UnsafeNativeMethods.SessionNDMakeRequestPhase.Connecting:
phase = SR.GetString(SR.State_Server_detailed_error_phase1);
break;
case (int)UnsafeNativeMethods.SessionNDMakeRequestPhase.SendingRequest:
phase = SR.GetString(SR.State_Server_detailed_error_phase2);
break;
case (int)UnsafeNativeMethods.SessionNDMakeRequestPhase.ReadingResponse:
phase = SR.GetString(SR.State_Server_detailed_error_phase3);
break;
default:
Debug.Assert(false, "Unknown results.lastPhase: " + results.lastPhase);
break;
}
WebBaseEvent.RaiseSystemEvent(SR.GetString(SR.State_Server_detailed_error,
phase,
"0x" + hr.ToString("X08", CultureInfo.InvariantCulture),
cb.ToString(CultureInfo.InvariantCulture)),
this, WebEventCodes.WebErrorOtherError, WebEventCodes.StateServerConnectionError, e);
throw e;
}
if (results.httpStatus == 400)
{
if (s_usePartition)
{
throw new HttpException(
SR.GetString(SR.Bad_state_server_request_partition_resolver,
s_configPartitionResolverType, _partitionInfo.Server, _partitionInfo.Port.ToString(CultureInfo.InvariantCulture)));
}
else
{
throw new HttpException(
SR.GetString(SR.Bad_state_server_request));
}
}
if (checkVersion)
{
_partitionInfo.StateServerVersion = results.stateServerMajVer;
if (_partitionInfo.StateServerVersion < WHIDBEY_MAJOR_VERSION)
{
// We won't work with versions lower than Whidbey
if (s_usePartition)
{
throw new HttpException(
SR.GetString(SR.Need_v2_State_Server_partition_resolver,
s_configPartitionResolverType, _partitionInfo.Server, _partitionInfo.Port.ToString(CultureInfo.InvariantCulture)));
}
else
{
throw new HttpException(
SR.GetString(SR.Need_v2_State_Server));
}
}
}
}
public override void SetAndReleaseItemExclusive(HttpContext context,
String id,
SessionStateStoreData item,
object lockId,
bool newItem)
{
string key = CreateSessionStateCacheKey(id);
bool doInsert = true;
CacheInternal cacheInternal = HttpRuntime.CacheInternal;
int lockCookieForInsert = NewLockCookie;
ISessionStateItemCollection items = null;
HttpStaticObjectsCollection staticObjects = null;
Debug.Assert(item.Items != null, "item.Items != null");
Debug.Assert(item.StaticObjects != null, "item.StaticObjects != null");
Debug.Assert(item.Timeout <= SessionStateModule.MAX_CACHE_BASED_TIMEOUT_MINUTES, "item.Timeout <= SessionStateModule.MAX_CACHE_BASED_TIMEOUT_MINUTES");
SessionIDManager.CheckIdLength(id, true /* throwOnFail */);
if (item.Items.Count > 0)
{
items = item.Items;
}
if (!item.StaticObjects.NeverAccessed)
{
staticObjects = item.StaticObjects;
}
if (!newItem)
{
Debug.Assert(lockId != null, "lockId != null");
InProcSessionState stateCurrent = (InProcSessionState)cacheInternal.Get(key);
int lockCookie = (int)lockId;
/* If the state isn't there, we probably took too long to run. */
if (stateCurrent == null)
{
return;
}
Debug.Trace("SessionStateClientSet", "state is inStorage; key = " + key);
Debug.Assert((stateCurrent._flags & (int)SessionStateItemFlags.Uninitialized) == 0, "Should never set an unitialized item; key = " + key);
stateCurrent._spinLock.AcquireWriterLock();
try {
/* Only set the state if we are the owner */
if (!stateCurrent._locked || stateCurrent._lockCookie != lockCookie)
{
Debug.Trace("SessionStateClientSet", "Leave because we're not the owner; key = " + key);
return;
}
/* We can change the state in place if the timeout hasn't changed */
if (stateCurrent._timeout == item.Timeout)
{
stateCurrent.Copy(
items,
staticObjects,
item.Timeout,
false,
DateTime.MinValue,
lockCookie,
stateCurrent._flags);
// Don't need to insert into the Cache because an in-place copy is good enough.
doInsert = false;
Debug.Trace("SessionStateClientSet", "Changing state inplace; key = " + key);
}
else
{
/* We are going to insert a new item to replace the current one in Cache
* because the expiry time has changed.
*
* Pleas note that an insert will cause the Session_End to be incorrectly raised.
*
* Please note that the item itself should not expire between now and
* where we do UtcInsert below because CacheInternal.Get above have just
* updated its expiry time.
*/
stateCurrent._flags |= (int)SessionStateItemFlags.IgnoreCacheItemRemoved;
/* By setting _lockCookie to 0, we prevent an overwriting by ReleaseExclusive
* when we drop the lock.
* The scenario can happen if another request is polling and trying to prempt
* the lock we have on the item.
*/
lockCookieForInsert = lockCookie;
stateCurrent._lockCookie = 0;
}
}
finally {
stateCurrent._spinLock.ReleaseWriterLock();
}
}
if (doInsert)
{
Debug.Trace("SessionStateClientSet", "Inserting state into Cache; key = " + key);
InProcSessionState state = new InProcSessionState(
items,
staticObjects,
item.Timeout,
false,
DateTime.MinValue,
lockCookieForInsert,
0);
try {
}
finally {
// protected from ThreadAbortEx
cacheInternal.UtcInsert(
key, state, null, Cache.NoAbsoluteExpiration, new TimeSpan(0, state._timeout, 0),
CacheItemPriority.NotRemovable, _callback);
PerfCounters.IncrementCounter(AppPerfCounter.SESSIONS_TOTAL);
PerfCounters.IncrementCounter(AppPerfCounter.SESSIONS_ACTIVE);
TraceSessionStats();
}
}
}
SessionStateStoreData DoGet(HttpContext context,
String id,
bool exclusive,
out bool locked,
out TimeSpan lockAge,
out object lockId,
out SessionStateActions actionFlags)
{
string key = CreateSessionStateCacheKey(id);
// Set default return values
locked = false;
lockId = null;
lockAge = TimeSpan.Zero;
actionFlags = 0;
// Not technically necessary for InProc, but we do it to be consistent
// with SQL provider
SessionIDManager.CheckIdLength(id, true /* throwOnFail */);
InProcSessionState state = (InProcSessionState)HttpRuntime.CacheInternal.Get(key);
if (state != null)
{
bool lockedByOther; // True if the state is locked by another session
int initialFlags;
initialFlags = (int)state._flags;
if ((initialFlags & (int)SessionStateItemFlags.Uninitialized) != 0)
{
// It is an uninitialized item. We have to remove that flag.
// We only allow one request to do that.
// For details, see inline doc for SessionStateItemFlags.Uninitialized flag.
// If initialFlags != return value of CompareExchange, it means another request has
// removed the flag.
Debug.Trace("SessionStateClientSet", "Removing the Uninit flag for item; key = " + key);
if (initialFlags == Interlocked.CompareExchange(
ref state._flags,
initialFlags & (~((int)SessionStateItemFlags.Uninitialized)),
initialFlags))
{
actionFlags = SessionStateActions.InitializeItem;
}
}
if (exclusive)
{
lockedByOther = true;
// If unlocked, use a spinlock to test and lock the state.
if (!state._locked)
{
state._spinLock.AcquireWriterLock();
try {
if (!state._locked)
{
lockedByOther = false;
state._locked = true;
state._utcLockDate = DateTime.UtcNow;
state._lockCookie++;
}
lockId = state._lockCookie;
}
finally {
state._spinLock.ReleaseWriterLock();
}
}
else
{
// It's already locked by another request. Return the lockCookie to caller.
lockId = state._lockCookie;
}
}
else
{
state._spinLock.AcquireReaderLock();
try {
lockedByOther = state._locked;
lockId = state._lockCookie;
}
finally {
state._spinLock.ReleaseReaderLock();
}
}
if (lockedByOther)
{
// Item found, but locked
locked = true;
lockAge = DateTime.UtcNow - state._utcLockDate;
return(null);
}
else
{
return(SessionStateUtility.CreateLegitStoreData(context, state._sessionItems,
state._staticObjects, state._timeout));
}
}
// Not found
return(null);
}
private void MakeRequest(System.Web.UnsafeNativeMethods.StateProtocolVerb verb, string id, System.Web.UnsafeNativeMethods.StateProtocolExclusive exclusiveAccess, int extraFlags, int timeout, int lockCookie, byte[] buf, int cb, int networkTimeout, out System.Web.UnsafeNativeMethods.SessionNDMakeRequestResults results)
{
int num;
OutOfProcConnection o = null;
bool checkVersion = false;
SessionIDManager.CheckIdLength(id, true);
if (this._partitionInfo == null)
{
this._partitionInfo = (StateServerPartitionInfo)s_partitionManager.GetPartition(this._partitionResolver, id);
if (this._partitionInfo == null)
{
throw new HttpException(System.Web.SR.GetString("Bad_partition_resolver_connection_string", new object[] { "PartitionManager" }));
}
}
try
{
HandleRef ref2;
o = (OutOfProcConnection)this._partitionInfo.RetrieveResource();
if (o != null)
{
ref2 = new HandleRef(this, o._socketHandle.Handle);
}
else
{
ref2 = new HandleRef(this, INVALID_SOCKET);
}
if (this._partitionInfo.StateServerVersion == -1)
{
checkVersion = true;
}
string uri = HttpUtility.UrlEncode(s_uribase + id);
num = System.Web.UnsafeNativeMethods.SessionNDMakeRequest(ref2, this._partitionInfo.Server, this._partitionInfo.Port, networkTimeout, verb, uri, exclusiveAccess, extraFlags, timeout, lockCookie, buf, cb, checkVersion, out results);
if (o != null)
{
if (results.socket == INVALID_SOCKET)
{
o.Detach();
o = null;
}
else if (results.socket != ref2.Handle)
{
o._socketHandle = new HandleRef(this, results.socket);
}
}
else if (results.socket != INVALID_SOCKET)
{
o = new OutOfProcConnection(results.socket);
}
if (o != null)
{
this._partitionInfo.StoreResource(o);
}
}
catch
{
if (o != null)
{
o.Dispose();
}
throw;
}
if (num == 0)
{
if (results.httpStatus == 400)
{
if (s_usePartition)
{
throw new HttpException(System.Web.SR.GetString("Bad_state_server_request_partition_resolver", new object[] { s_configPartitionResolverType, this._partitionInfo.Server, this._partitionInfo.Port.ToString(CultureInfo.InvariantCulture) }));
}
throw new HttpException(System.Web.SR.GetString("Bad_state_server_request"));
}
if (checkVersion)
{
this._partitionInfo.StateServerVersion = results.stateServerMajVer;
if (this._partitionInfo.StateServerVersion < WHIDBEY_MAJOR_VERSION)
{
if (s_usePartition)
{
throw new HttpException(System.Web.SR.GetString("Need_v2_State_Server_partition_resolver", new object[] { s_configPartitionResolverType, this._partitionInfo.Server, this._partitionInfo.Port.ToString(CultureInfo.InvariantCulture) }));
}
throw new HttpException(System.Web.SR.GetString("Need_v2_State_Server"));
}
}
}
else
{
HttpException exception = CreateConnectionException(this._partitionInfo.Server, this._partitionInfo.Port, num);
string str2 = null;
switch (results.lastPhase)
{
case 0:
str2 = System.Web.SR.GetString("State_Server_detailed_error_phase0");
break;
case 1:
str2 = System.Web.SR.GetString("State_Server_detailed_error_phase1");
break;
case 2:
str2 = System.Web.SR.GetString("State_Server_detailed_error_phase2");
break;
case 3:
str2 = System.Web.SR.GetString("State_Server_detailed_error_phase3");
break;
}
WebBaseEvent.RaiseSystemEvent(System.Web.SR.GetString("State_Server_detailed_error", new object[] { str2, "0x" + num.ToString("X08", CultureInfo.InvariantCulture), cb.ToString(CultureInfo.InvariantCulture) }), this, 0xbc1, 0xc360, exception);
throw exception;
}
}
private SessionStateStoreData DoGet(HttpContext context, string id, bool exclusive, out bool locked, out TimeSpan lockAge, out object lockId, out SessionStateActions actionFlags)
{
bool flag;
string key = this.CreateSessionStateCacheKey(id);
locked = false;
lockId = null;
lockAge = TimeSpan.Zero;
actionFlags = SessionStateActions.None;
SessionIDManager.CheckIdLength(id, true);
InProcSessionState state = (InProcSessionState)HttpRuntime.CacheInternal.Get(key);
if (state == null)
{
return(null);
}
int comparand = state._flags;
if (((comparand & 1) != 0) && (comparand == Interlocked.CompareExchange(ref state._flags, comparand & -2, comparand)))
{
actionFlags = SessionStateActions.InitializeItem;
}
if (exclusive)
{
flag = true;
if (!state._locked)
{
state._spinLock.AcquireWriterLock();
try
{
if (!state._locked)
{
flag = false;
state._locked = true;
state._utcLockDate = DateTime.UtcNow;
state._lockCookie++;
}
lockId = state._lockCookie;
goto Label_00FE;
}
finally
{
state._spinLock.ReleaseWriterLock();
}
}
lockId = state._lockCookie;
}
else
{
state._spinLock.AcquireReaderLock();
try
{
flag = state._locked;
lockId = state._lockCookie;
}
finally
{
state._spinLock.ReleaseReaderLock();
}
}
Label_00FE:
if (flag)
{
locked = true;
lockAge = (TimeSpan)(DateTime.UtcNow - state._utcLockDate);
return(null);
}
return(SessionStateUtility.CreateLegitStoreData(context, state._sessionItems, state._staticObjects, state._timeout));
}
public override void SetAndReleaseItemExclusive(HttpContext context, string id, SessionStateStoreData item, object lockId, bool newItem)
{
string key = this.CreateSessionStateCacheKey(id);
bool flag = true;
CacheInternal cacheInternal = HttpRuntime.CacheInternal;
int newLockCookie = NewLockCookie;
ISessionStateItemCollection sessionItems = null;
HttpStaticObjectsCollection staticObjects = null;
SessionIDManager.CheckIdLength(id, true);
if (item.Items.Count > 0)
{
sessionItems = item.Items;
}
if (!item.StaticObjects.NeverAccessed)
{
staticObjects = item.StaticObjects;
}
if (!newItem)
{
InProcSessionState state = (InProcSessionState)cacheInternal.Get(key);
int lockCookie = (int)lockId;
if (state == null)
{
return;
}
state._spinLock.AcquireWriterLock();
try
{
if (!state._locked || (state._lockCookie != lockCookie))
{
return;
}
if (state._timeout == item.Timeout)
{
state.Copy(sessionItems, staticObjects, item.Timeout, false, DateTime.MinValue, lockCookie, state._flags);
flag = false;
}
else
{
state._flags |= 2;
newLockCookie = lockCookie;
state._lockCookie = 0;
}
}
finally
{
state._spinLock.ReleaseWriterLock();
}
}
if (flag)
{
InProcSessionState state2 = new InProcSessionState(sessionItems, staticObjects, item.Timeout, false, DateTime.MinValue, newLockCookie, 0);
try
{
}
finally
{
cacheInternal.UtcInsert(key, state2, null, Cache.NoAbsoluteExpiration, new TimeSpan(0, state2._timeout, 0), CacheItemPriority.NotRemovable, this._callback);
PerfCounters.IncrementCounter(AppPerfCounter.SESSIONS_TOTAL);
PerfCounters.IncrementCounter(AppPerfCounter.SESSIONS_ACTIVE);
}
}
}
