tests/extmod: Close UDP sockets at end of test.

yf13 · dpgeorge · commit 274306860b2d · 2025-07-15T13:57:21.000+10:00
This adds call to release UDP port in a timely manner, so they can be reused in subsequent tests. Otherwise, one could face issue like micropython#17623. Signed-off-by: Yanfeng Liu <yfliu2008@qq.com>
diff --git a/tests/extmod/select_poll_udp.py b/tests/extmod/select_poll_udp.py
@@ -29,3 +29,5 @@
 if hasattr(select, "select"):
     r, w, e = select.select([s], [], [], 0)
     assert not r and not w and not e
+
+s.close()
diff --git a/tests/extmod/socket_udp_nonblock.py b/tests/extmod/socket_udp_nonblock.py
@@ -19,3 +19,5 @@
     s.recv(1)
 except OSError as er:
     print("EAGAIN:", er.errno == errno.EAGAIN)
+
+s.close()
