From c02763ae9ab1c8fd8fe5c03fad1fb24982c88200 Mon Sep 17 00:00:00 2001
From: Pilzinsel64 <pascal.schedel@dr-schneider.com>
Date: Tue, 28 Jan 2025 07:37:43 +0100
Subject: [PATCH] release semaphore only if requied

---
 Pilz.Net/Api/ApiServer.cs | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/Pilz.Net/Api/ApiServer.cs b/Pilz.Net/Api/ApiServer.cs
index 5557680..e24f0c3 100644
--- a/Pilz.Net/Api/ApiServer.cs
+++ b/Pilz.Net/Api/ApiServer.cs
@@ -100,13 +100,14 @@ public class ApiServer(string apiUrl) : IApiServer
     {
         if (MaxConcurentConnections == int.MaxValue)
             return; // Unlimited in this case
-        semaphore ??= new(MaxConcurentConnections);
+        semaphore ??= new(MaxConcurentConnections, MaxConcurentConnections);
         semaphore.Wait();
     }
 
     protected virtual void FreeSlot()
     {
-        semaphore?.Release();
+        if (semaphore != null && semaphore.CurrentCount < MaxConcurentConnections)
+            semaphore.Release();
     }
 
     public virtual void RegisterHandler<T>(T instance) where T : class