diff -urEb civetweb-1.12.orig/include/civetweb.h civetweb-1.12/include/civetweb.h
--- civetweb-1.12.orig/include/civetweb.h	2020-04-02 12:07:20.727054140 +0200
+++ civetweb-1.12/include/civetweb.h	2020-04-02 12:07:42.734996559 +0200
@@ -1614,6 +1614,9 @@
                                   struct mg_error_data *error);
 #endif
 
+// Added by SJ
+CIVETWEB_API void mg_disable_keep_alive(struct mg_connection *conn);
+
 #ifdef __cplusplus
 }
 #endif /* __cplusplus */
diff -urEb civetweb-1.12.orig/src/civetweb.c civetweb-1.12/src/civetweb.c
--- civetweb-1.12.orig/src/civetweb.c	2020-04-02 12:07:20.731054129 +0200
+++ civetweb-1.12/src/civetweb.c	2020-04-02 12:07:52.250971600 +0200
@@ -20704,5 +20704,12 @@
 	return 1;
 }
 
+// Added by SJ
+void mg_disable_keep_alive(struct mg_connection *conn)
+{
+  if (conn != NULL) {
+    conn->must_close = 1;
+  }
+}
 
 /* End of civetweb.c */