it helps to clear the set of writable FDs

diff --git a/src/lib/event.c b/src/lib/event.c
index 0d926adcf1ee2dd856661982faee6709b4561637..c44441803baee644b7e7a4d33d9f5cbfd35b0a2e 100644 (file)
--- a/src/lib/event.c
+++ b/src/lib/event.c
@@ -514,7 +514,11 @@ int fr_event_fd_write_handler(fr_event_list_t *el, int type, int fd,
                fr_assert(ctx = el->readers[i].ctx);
                el->readers[i].write_handler = write_handler;
 
-               FD_SET(fd, &el->write_fds); /* fd MUST already be in the set of readers! */
+               if (write_handler) {
+                       FD_SET(fd, &el->write_fds); /* fd MUST already be in the set of readers! */
+               }  else {
+                       FD_CLR(fd, &el->write_fds);
+               }
                return 1;
        }
 #endif /* HAVE_KQUEUE */