HttpSessionState SelectSession(string id, bool read_only)
{
HttpSessionState session = null;
using (IDataReader reader = GetReaderWithRetry(id)) {
if (!reader.Read())
{
return(null);
}
SessionDictionary dict;
HttpStaticObjectsCollection sobjs;
int timeout;
dict = SessionDictionary.FromByteArray(ReadBytes(reader, reader.FieldCount - 1));
sobjs = HttpStaticObjectsCollection.FromByteArray(ReadBytes(reader, reader.FieldCount - 2));
// try to support as many DBs/int types as possible
timeout = Convert.ToInt32(reader.GetValue(reader.FieldCount - 3));
session = new HttpSessionState(id, dict, sobjs, timeout, false, config.CookieLess,
SessionStateMode.SQLServer, read_only);
return(session);
}
}
SessionStateStoreData GetItemInternal(HttpContext context,
string id,
out bool locked,
out TimeSpan lockAge,
out object lockId,
out SessionStateActions actions,
bool exclusive)
{
Trace.WriteLine("SessionStateServerHandler.GetItemInternal");
Trace.WriteLine("\tid == " + id);
Trace.WriteLine("\tpath == " + context.Request.FilePath);
locked = false;
lockAge = TimeSpan.MinValue;
lockId = Int32.MinValue;
actions = SessionStateActions.None;
if (id == null)
{
return(null);
}
StateServerItem item = stateServer.GetItem(id,
out locked,
out lockAge,
out lockId,
out actions,
exclusive);
if (item == null)
{
Trace.WriteLine("\titem is null (locked == " + locked + ", actions == " + actions + ")");
return(null);
}
if (actions == SessionStateActions.InitializeItem)
{
Trace.WriteLine("\titem needs initialization");
return(CreateNewStoreData(context, item.Timeout));
}
SessionStateItemCollection items = null;
HttpStaticObjectsCollection sobjs = null;
MemoryStream stream = null;
BinaryReader reader = null;
try {
if (item.CollectionData != null && item.CollectionData.Length > 0)
{
stream = new MemoryStream(item.CollectionData);
reader = new BinaryReader(stream);
items = SessionStateItemCollection.Deserialize(reader);
}
else
{
items = new SessionStateItemCollection();
}
if (item.StaticObjectsData != null && item.StaticObjectsData.Length > 0)
{
sobjs = HttpStaticObjectsCollection.FromByteArray(item.StaticObjectsData);
}
else
{
sobjs = new HttpStaticObjectsCollection();
}
} catch (Exception ex) {
throw new HttpException("Failed to retrieve session state.", ex);
} finally {
if (reader != null)
{
reader.Close();
}
}
return(new SessionStateStoreData(items,
sobjs,
item.Timeout));
}
SessionStateStoreData GetItemInternal (HttpContext context,
string id,
out bool locked,
out TimeSpan lockAge,
out object lockId,
out SessionStateActions actions,
bool exclusive)
{
locked = false;
lockAge = TimeSpan.MinValue;
lockId = Int32.MinValue;
actions = SessionStateActions.None;
if (id == null)
return null;
StateServerItem item = stateServer.GetItem (id,
out locked,
out lockAge,
out lockId,
out actions,
exclusive);
if (item == null)
return null;
if (actions == SessionStateActions.InitializeItem)
return CreateNewStoreData (context, item.Timeout);
SessionStateItemCollection items = null;
HttpStaticObjectsCollection sobjs = null;
MemoryStream stream = null;
BinaryReader reader = null;
Stream input = null;
#if NET_4_0
GZipStream gzip = null;
#endif
try {
if (item.CollectionData != null && item.CollectionData.Length > 0) {
stream = new MemoryStream (item.CollectionData);
#if NET_4_0
if (config.CompressionEnabled)
input = gzip = new GZipStream (stream, CompressionMode.Decompress, true);
else
#endif
input = stream;
reader = new BinaryReader (input);
items = SessionStateItemCollection.Deserialize (reader);
#if NET_4_0
if (gzip != null)
gzip.Close ();
#endif
reader.Close ();
} else
items = new SessionStateItemCollection ();
if (item.StaticObjectsData != null && item.StaticObjectsData.Length > 0)
sobjs = HttpStaticObjectsCollection.FromByteArray (item.StaticObjectsData);
else
sobjs = new HttpStaticObjectsCollection ();
} catch (Exception ex) {
throw new HttpException ("Failed to retrieve session state.", ex);
} finally {
if (stream != null)
stream.Dispose ();
#if NET_4_0
if (reader != null)
reader.Dispose ();
if (gzip != null)
gzip.Dispose ();
#else
if (reader != null)
((IDisposable)reader).Dispose ();
#endif
}
return new SessionStateStoreData (items,
sobjs,
item.Timeout);
}
