1 files changed, 18 insertions, 0 deletions

diff --git a/src/microhttpd/daemon.c b/src/microhttpd/daemon.c
index cbf57773..296c0ee8 100644
--- a/src/microhttpd/daemon.c
+++ b/src/microhttpd/daemon.c
@@ -4822,6 +4822,24 @@ parse_options_va (struct MHD_Daemon *daemon,
                                                  void *);
           break;
         case MHD_OPTION_THREAD_POOL_SIZE:
+          if (0 == (daemon->options & MHD_USE_INTERNAL_POLLING_THREAD))
+            {
+#ifdef HAVE_MESSAGES
+              MHD_DLOG (daemon,
+                        _("MHD_OPTION_THREAD_POOL_SIZE option is specified but "
+                          "MHD_USE_INTERNAL_POLLING_THREAD flag is not specified.\n"));
+#endif
+              return MHD_NO;
+            }
+          if (0 != (daemon->options & MHD_USE_THREAD_PER_CONNECTION))
+            {
+#ifdef HAVE_MESSAGES
+              MHD_DLOG (daemon,
+                        _("Both MHD_OPTION_THREAD_POOL_SIZE option and "
+                          "MHD_USE_THREAD_PER_CONNECTION flag are specified.\n"));
+#endif
+              return MHD_NO;
+            }
           daemon->worker_pool_size = va_arg (ap,
                                              unsigned int);
           if (0 == daemon->worker_pool_size)