From 7c33c9dbc744c62d24f58da7fb5080659834183c Mon Sep 17 00:00:00 2001
From: Charl Wentzel <charl.wentzel@vodamail.co.za>
Date: Wed, 6 Dec 2017 09:56:28 +0200
Subject: [PATCH] Important Update: - SelectCore:   - Bug fix: only remove
 handle from read/write list if different function

---
 SelectCore.cpp | 21 ++++++++++++---------
 1 file changed, 12 insertions(+), 9 deletions(-)

diff --git a/SelectCore.cpp b/SelectCore.cpp
index f6d2ed0..a60bea1 100644
--- a/SelectCore.cpp
+++ b/SelectCore.cpp
@@ -93,19 +93,22 @@ void CSelect::Add( int FD, bool Read, bool Write, CSelectableCore * Function )
     while (*Handle && ((*Handle)->FD != FD)) {
         Handle = &((*Handle)->Next);
     }
-    if (*Handle) {
-        // Old handle not yet removed, remove from read/write lists
-        Remove( FD, true, true );
-    }
-    else {
+    if (!*Handle) {
         // Create if not exist
         *Handle = (TSelectHandle*)malloc( sizeof(TSelectHandle) );
         memset( *Handle, 0, sizeof(TSelectHandle) );
-        (*Handle)->FD = FD;
-    }
 
-    // Set Parameters
-    (*Handle)->Function = Function;
+        // Set Parameters
+        (*Handle)->FD = FD;
+        (*Handle)->Function = Function;
+    }
+    else if ((*Handle)->Function != Function) {
+        // Old handle for another function, not yet removed, remove from read/write lists
+        Remove( FD, true, true );
+
+        // Overwrite Parameters
+        (*Handle)->Function = Function;
+    }
 
     // Add Read select
     if (Read && !(*Handle)->Read) {