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-rw-r--r--test/py/lib/net.py21
1 files changed, 21 insertions, 0 deletions
diff --git a/test/py/lib/net.py b/test/py/lib/net.py
new file mode 100644
index 0000000..816dd99
--- /dev/null
+++ b/test/py/lib/net.py
@@ -0,0 +1,21 @@
+# Copyright (c) 2023 Egor Tensin <Egor.Tensin@gmail.com>
+# This file is part of the "cimple" project.
+# For details, see https://github.com/egor-tensin/cimple.
+# Distributed under the MIT License.
+
+from contextlib import closing
+import random
+import socket
+
+
+def port_is_open(host, port):
+ with closing(socket.socket(socket.AF_INET, socket.SOCK_STREAM)) as sock:
+ return sock.connect_ex((host, port)) == 0
+
+
+def random_unused_port():
+ while True:
+ port = random.randint(20000, 40000)
+ if port_is_open('127.0.0.1', port):
+ continue
+ return port