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Don't keep ASP.NET sessions around

This commit is contained in:
Frank A. Krueger 2018-02-21 15:40:12 -08:00
parent 4ef14afc7f
commit 7267bb2687
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GPG Key ID: 0471C67474FFE664
1 changed files with 11 additions and 12 deletions
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23
Ooui.AspNetCore/WebSocketHandler.cs
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@ -11,21 +11,21 @@ namespace Ooui.AspNetCore
{
public static string WebSocketPath { get; set; } = "/ooui.ws";
public static TimeSpan SessionTimeout { get; set; } = TimeSpan.FromMinutes (5);
public static TimeSpan SessionTimeout { get; set; } = TimeSpan.FromMinutes (1);
static readonly ConcurrentDictionary<string, ActiveSession> activeSessions =
new ConcurrentDictionary<string, ActiveSession> ();
static readonly ConcurrentDictionary<string, PendingSession> pendingSessions =
new ConcurrentDictionary<string, PendingSession> ();
public static string BeginSession (HttpContext context, Element element)
{
var id = Guid.NewGuid ().ToString ("N");
var s = new ActiveSession {
var s = new PendingSession {
Element = element,
LastConnectTimeUtc = DateTime.UtcNow,
CreateTimeUtc = DateTime.UtcNow,
};
if (!activeSessions.TryAdd (id, s)) {
if (!pendingSessions.TryAdd (id, s)) {
throw new Exception ("Failed to schedule pending session");
}
@ -62,19 +62,18 @@ namespace Ooui.AspNetCore
//
// Clear old sessions
//
var toClear = activeSessions.Where (x => (DateTime.UtcNow - x.Value.LastConnectTimeUtc) > SessionTimeout).ToList ();
var toClear = pendingSessions.Where (x => (DateTime.UtcNow - x.Value.CreateTimeUtc) > SessionTimeout).ToList ();
foreach (var c in toClear) {
activeSessions.TryRemove (c.Key, out var _);
pendingSessions.TryRemove (c.Key, out var _);
}
//
// Find the pending session
//
if (!activeSessions.TryGetValue (id, out var activeSession)) {
if (!pendingSessions.TryRemove (id, out var activeSession)) {
BadRequest ("Unknown `id`");
return;
}
activeSession.LastConnectTimeUtc = DateTime.UtcNow;
//
// Set the element's dimensions
@ -102,10 +101,10 @@ namespace Ooui.AspNetCore
await session.RunAsync ().ConfigureAwait (false);
}
class ActiveSession
class PendingSession
{
public Element Element;
public DateTime LastConnectTimeUtc;
public DateTime CreateTimeUtc;
}
}
}