From 0ff5b1f8e81a6ff43889143158c94bcd2c2c7ee8 Mon Sep 17 00:00:00 2001
From: luaijun <luaijun@espressif.com>
Date: Tue, 21 Feb 2023 15:30:34 +0800
Subject: [PATCH] add time delay after create tcp server on PC

---
 tools/ci/python_packages/idf_iperf_test_util/IperfUtility.py | 1 +
 1 file changed, 1 insertion(+)

diff --git a/tools/ci/python_packages/idf_iperf_test_util/IperfUtility.py b/tools/ci/python_packages/idf_iperf_test_util/IperfUtility.py
index 3aebf10918..02a831157d 100644
--- a/tools/ci/python_packages/idf_iperf_test_util/IperfUtility.py
+++ b/tools/ci/python_packages/idf_iperf_test_util/IperfUtility.py
@@ -301,6 +301,7 @@ class IperfTestUtility(object):
                     process = subprocess.Popen(['iperf', '-s', '-B', self.pc_nic_ip,
                                                 '-t', str(TEST_TIME), '-i', '1', '-f', 'm'],
                                                stdout=f, stderr=f)
+                    time.sleep(1)
                     if bw_limit > 0:
                         self.dut.write('iperf -c {} -i 1 -t {} -b {}'.format(self.pc_nic_ip, TEST_TIME, bw_limit))
                     else: