net: sockets: Set writefds in case of error in select()

The writefds is typically set if there is an error while waiting for example the connect() to finish. So check if the user supplied the writefds and update it accordingly. Signed-off-by: Jukka Rissanen <[email protected]>
phan-uy-vu · Oct 24, 2023 · 5bf18e3 · 5bf18e3
1 parent ec4973d
commit 5bf18e3
Showing 1 changed file with 5 additions and 0 deletions.
diff --git a/subsys/net/lib/sockets/sockets_select.c b/subsys/net/lib/sockets/sockets_select.c
@@ -196,6 +196,11 @@ int z_impl_zsock_select(int nfds, zsock_fd_set *readfds, zsock_fd_set *writefds,
 				ZSOCK_FD_SET(fd, exceptfds);
 				num_selects++;
 			}
+
+			if (writefds != NULL) {
+				ZSOCK_FD_SET(fd, writefds);
+				num_selects++;
+			}
 		}
 
 		res--;