From f8bce850d57859d37e02add890ae738858ace722 Mon Sep 17 00:00:00 2001
From: Pilzinsel64 <pascal.schedel@dr-schneider.com>
Date: Tue, 28 Jan 2025 06:52:00 +0100
Subject: [PATCH] try solving a softlock

---
 Pilz.Net/Api/ApiServer.cs | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/Pilz.Net/Api/ApiServer.cs b/Pilz.Net/Api/ApiServer.cs
index ae8dd5d..5557680 100644
--- a/Pilz.Net/Api/ApiServer.cs
+++ b/Pilz.Net/Api/ApiServer.cs
@@ -98,6 +98,8 @@ public class ApiServer(string apiUrl) : IApiServer
 
     protected virtual void WaitForSlot()
     {
+        if (MaxConcurentConnections == int.MaxValue)
+            return; // Unlimited in this case
         semaphore ??= new(MaxConcurentConnections);
         semaphore.Wait();
     }
@@ -190,6 +192,7 @@ public class ApiServer(string apiUrl) : IApiServer
         {
             Log.Fatal($"Too many concurent connections", ex);
             Thread.Sleep(1000);
+            FreeSlot();
             return;
         }
 
@@ -204,7 +207,10 @@ public class ApiServer(string apiUrl) : IApiServer
             {
                 Log.Fatal($"Fatal http error retriving context with code {ex.ErrorCode}", ex);
                 if (AutoRestart()) // Try restart the server and skip this context
+                {
+                    FreeSlot();
                     return;
+                }
             }
             else
                 Log.Error($"Http error retriving context with code {ex.ErrorCode}", ex);