Merge branch 'bugfix/address_already_used_exception_in_ota_tests' into 'master'

Fix 'address already in use' exception in OTA tests

Closes IDFCI-965

See merge request espressif/esp-idf!15879

examples/system/ota/advanced_https_ota/example_test.py

@@ -1,4 +1,5 @@
 import http.server
+import multiprocessing
 import os
 import random
 import re
@@ -6,7 +7,6 @@ import socket
 import ssl
 import struct
 import subprocess
-from threading import Thread
 
 import ttfw_idf
 from RangeHTTPServer import RangeRequestHandler
@@ -191,7 +191,7 @@ def test_examples_protocol_advanced_https_ota_example(env, extra_data):
     # start test
     host_ip = get_my_ip()
     if (get_server_status(host_ip, server_port) is False):
-        thread1 = Thread(target=start_https_server, args=(dut1.app.binary_path, host_ip, server_port))
+        thread1 = multiprocessing.Process(target=start_https_server, args=(dut1.app.binary_path, host_ip, server_port))
         thread1.daemon = True
         thread1.start()
     dut1.start_app()
@@ -202,7 +202,7 @@ def test_examples_protocol_advanced_https_ota_example(env, extra_data):
             print('Connected to AP with IP: {}'.format(ip_address))
         except DUT.ExpectTimeout:
             raise ValueError('ENV_TEST_FAILURE: Cannot connect to AP')
-            thread1.close()
+            thread1.terminate()
         dut1.expect('Starting Advanced OTA example', timeout=30)
 
         print('writing to device: {}'.format('https://' + host_ip + ':' + str(server_port) + '/' + bin_name))
@@ -210,6 +210,7 @@ def test_examples_protocol_advanced_https_ota_example(env, extra_data):
         dut1.expect('Loaded app from partition at offset', timeout=60)
         dut1.expect('Starting Advanced OTA example', timeout=30)
         dut1.reset()
+    thread1.terminate()
 
 
 @ttfw_idf.idf_example_test(env_tag='EXAMPLE_ETH_OTA')
@@ -245,7 +246,7 @@ def test_examples_protocol_advanced_https_ota_example_truncated_bin(env, extra_d
     # start test
     host_ip = get_my_ip()
     if (get_server_status(host_ip, server_port) is False):
-        thread1 = Thread(target=start_https_server, args=(dut1.app.binary_path, host_ip, server_port))
+        thread1 = multiprocessing.Process(target=start_https_server, args=(dut1.app.binary_path, host_ip, server_port))
         thread1.daemon = True
         thread1.start()
     dut1.start_app()
@@ -255,12 +256,14 @@ def test_examples_protocol_advanced_https_ota_example_truncated_bin(env, extra_d
         print('Connected to AP with IP: {}'.format(ip_address))
     except DUT.ExpectTimeout:
         raise ValueError('ENV_TEST_FAILURE: Cannot connect to AP')
+        thread1.terminate()
     dut1.expect('Starting Advanced OTA example', timeout=30)
 
     print('writing to device: {}'.format('https://' + host_ip + ':' + str(server_port) + '/' + truncated_bin_name))
     dut1.write('https://' + host_ip + ':' + str(server_port) + '/' + truncated_bin_name)
     dut1.expect('Image validation failed, image is corrupted', timeout=30)
     os.remove(binary_file)
+    thread1.terminate()
 
 
 @ttfw_idf.idf_example_test(env_tag='EXAMPLE_ETH_OTA')
@@ -295,7 +298,7 @@ def test_examples_protocol_advanced_https_ota_example_truncated_header(env, extr
     # start test
     host_ip = get_my_ip()
     if (get_server_status(host_ip, server_port) is False):
-        thread1 = Thread(target=start_https_server, args=(dut1.app.binary_path, host_ip, server_port))
+        thread1 = multiprocessing.Process(target=start_https_server, args=(dut1.app.binary_path, host_ip, server_port))
         thread1.daemon = True
         thread1.start()
     dut1.start_app()
@@ -305,12 +308,14 @@ def test_examples_protocol_advanced_https_ota_example_truncated_header(env, extr
         print('Connected to AP with IP: {}'.format(ip_address))
     except DUT.ExpectTimeout:
         raise ValueError('ENV_TEST_FAILURE: Cannot connect to AP')
+        thread1.terminate()
     dut1.expect('Starting Advanced OTA example', timeout=30)
 
     print('writing to device: {}'.format('https://' + host_ip + ':' + str(server_port) + '/' + truncated_bin_name))
     dut1.write('https://' + host_ip + ':' + str(server_port) + '/' + truncated_bin_name)
     dut1.expect('advanced_https_ota_example: esp_https_ota_read_img_desc failed', timeout=30)
     os.remove(binary_file)
+    thread1.terminate()
 
 
 @ttfw_idf.idf_example_test(env_tag='EXAMPLE_ETH_OTA')
@@ -344,7 +349,7 @@ def test_examples_protocol_advanced_https_ota_example_random(env, extra_data):
     # start test
     host_ip = get_my_ip()
     if (get_server_status(host_ip, server_port) is False):
-        thread1 = Thread(target=start_https_server, args=(dut1.app.binary_path, host_ip, server_port))
+        thread1 = multiprocessing.Process(target=start_https_server, args=(dut1.app.binary_path, host_ip, server_port))
         thread1.daemon = True
         thread1.start()
     dut1.start_app()
@@ -354,12 +359,14 @@ def test_examples_protocol_advanced_https_ota_example_random(env, extra_data):
         print('Connected to AP with IP: {}'.format(ip_address))
     except DUT.ExpectTimeout:
         raise ValueError('ENV_TEST_FAILURE: Cannot connect to AP')
+        thread1.terminate()
     dut1.expect('Starting Advanced OTA example', timeout=30)
 
     print('writing to device: {}'.format('https://' + host_ip + ':' + str(server_port) + '/' + random_bin_name))
     dut1.write('https://' + host_ip + ':' + str(server_port) + '/' + random_bin_name)
     dut1.expect('esp_ota_ops: OTA image has invalid magic byte', timeout=10)
     os.remove(binary_file)
+    thread1.terminate()
 
 
 @ttfw_idf.idf_example_test(env_tag='EXAMPLE_ETH_OTA')
@@ -424,10 +431,10 @@ def test_examples_protocol_advanced_https_ota_example_redirect_url(env, extra_da
     # start test
     host_ip = get_my_ip()
     if (get_server_status(host_ip, server_port) is False):
-        thread1 = Thread(target=start_https_server, args=(dut1.app.binary_path, host_ip, server_port))
+        thread1 = multiprocessing.Process(target=start_https_server, args=(dut1.app.binary_path, host_ip, server_port))
         thread1.daemon = True
         thread1.start()
-    thread2 = Thread(target=start_redirect_server, args=(dut1.app.binary_path, host_ip, redirection_server_port, server_port))
+    thread2 = multiprocessing.Process(target=start_redirect_server, args=(dut1.app.binary_path, host_ip, redirection_server_port, server_port))
     thread2.daemon = True
     thread2.start()
     dut1.start_app()
@@ -437,8 +444,8 @@ def test_examples_protocol_advanced_https_ota_example_redirect_url(env, extra_da
         print('Connected to AP with IP: {}'.format(ip_address))
     except DUT.ExpectTimeout:
         raise ValueError('ENV_TEST_FAILURE: Cannot connect to AP')
-        thread1.close()
-        thread2.close()
+        thread1.terminate()
+        thread2.terminate()
     dut1.expect('Starting Advanced OTA example', timeout=30)
 
     print('writing to device: {}'.format('https://' + host_ip + ':' + str(redirection_server_port) + '/' + bin_name))
@@ -446,6 +453,8 @@ def test_examples_protocol_advanced_https_ota_example_redirect_url(env, extra_da
     dut1.expect('Loaded app from partition at offset', timeout=60)
     dut1.expect('Starting Advanced OTA example', timeout=30)
     dut1.reset()
+    thread1.terminate()
+    thread2.terminate()
 
 
 @ttfw_idf.idf_example_test(env_tag='Example_8Mflash_Ethernet')
@@ -485,7 +494,7 @@ def test_examples_protocol_advanced_https_ota_example_anti_rollback(env, extra_d
     # start test
     host_ip = get_my_ip()
     if (get_server_status(host_ip, server_port) is False):
-        thread1 = Thread(target=start_https_server, args=(dut1.app.binary_path, host_ip, server_port))
+        thread1 = multiprocessing.Process(target=start_https_server, args=(dut1.app.binary_path, host_ip, server_port))
         thread1.daemon = True
         thread1.start()
     dut1.start_app()
@@ -496,6 +505,7 @@ def test_examples_protocol_advanced_https_ota_example_anti_rollback(env, extra_d
         print('Connected to AP with IP: {}'.format(ip_address))
     except DUT.ExpectTimeout:
         raise ValueError('ENV_TEST_FAILURE: Cannot connect to AP')
+        thread1.terminate()
     dut1.expect('Starting Advanced OTA example', timeout=30)
 
     # Use originally generated image with secure_version=1
@@ -511,7 +521,8 @@ def test_examples_protocol_advanced_https_ota_example_anti_rollback(env, extra_d
     print('writing to device: {}'.format('https://' + host_ip + ':' + str(server_port) + '/' + anti_rollback_bin_name))
     dut1.write('https://' + host_ip + ':' + str(server_port) + '/' + anti_rollback_bin_name)
     dut1.expect('New firmware security version is less than eFuse programmed, 0 < 1', timeout=30)
-    os.remove(anti_rollback_bin_name)
+    os.remove(binary_file)
+    thread1.terminate()
 
 
 @ttfw_idf.idf_example_test(env_tag='EXAMPLE_ETH_OTA')
@@ -537,7 +548,7 @@ def test_examples_protocol_advanced_https_ota_example_partial_request(env, extra
     # start test
     host_ip = get_my_ip()
     if (get_server_status(host_ip, server_port) is False):
-        thread1 = Thread(target=start_https_server, args=(dut1.app.binary_path, host_ip, server_port))
+        thread1 = multiprocessing.Process(target=start_https_server, args=(dut1.app.binary_path, host_ip, server_port))
         thread1.daemon = True
         thread1.start()
     dut1.start_app()
@@ -548,6 +559,7 @@ def test_examples_protocol_advanced_https_ota_example_partial_request(env, extra
     except DUT.ExpectTimeout:
         Utility.console_log('ENV_TEST_FAILURE: Cannot connect to AP')
         raise
+        thread1.terminate()
     dut1.expect('Starting Advanced OTA example', timeout=30)
 
     print('writing to device: {}'.format('https://' + host_ip + ':' + str(server_port) + '/' + bin_name))
@@ -557,6 +569,7 @@ def test_examples_protocol_advanced_https_ota_example_partial_request(env, extra
     dut1.expect('Loaded app from partition at offset', timeout=60)
     dut1.expect('Starting Advanced OTA example', timeout=30)
     dut1.reset()
+    thread1.terminate()
 
 
 @ttfw_idf.idf_example_test(env_tag='Example_WIFI_OTA', nightly_run=True)
@@ -580,7 +593,7 @@ def test_examples_protocol_advanced_https_ota_example_nimble_gatts(env, extra_da
     # start test
     host_ip = get_my_ip()
     if (get_server_status(host_ip, server_port) is False):
-        thread1 = Thread(target=start_https_server, args=(dut1.app.binary_path, host_ip, server_port))
+        thread1 = multiprocessing.Process(target=start_https_server, args=(dut1.app.binary_path, host_ip, server_port))
         thread1.daemon = True
         thread1.start()
     dut1.start_app()
@@ -590,6 +603,7 @@ def test_examples_protocol_advanced_https_ota_example_nimble_gatts(env, extra_da
         print('Connected to AP with IP: {}'.format(ip_address))
     except DUT.ExpectTimeout:
         raise ValueError('ENV_TEST_FAILURE: Cannot connect to AP')
+        thread1.terminate()
 
     dut1.expect('Starting Advanced OTA example', timeout=30)
     print('writing to device: {}'.format('https://' + host_ip + ':' + str(server_port) + '/' + bin_name))
@@ -600,6 +614,7 @@ def test_examples_protocol_advanced_https_ota_example_nimble_gatts(env, extra_da
     dut1.expect('Loaded app from partition at offset', timeout=60)
     dut1.expect('Starting Advanced OTA example', timeout=30)
     dut1.reset()
+    thread1.terminate()
 
 
 @ttfw_idf.idf_example_test(env_tag='Example_WIFI_OTA', nightly_run=True)
@@ -623,7 +638,7 @@ def test_examples_protocol_advanced_https_ota_example_bluedroid_gatts(env, extra
     # start test
     host_ip = get_my_ip()
     if (get_server_status(host_ip, server_port) is False):
-        thread1 = Thread(target=start_https_server, args=(dut1.app.binary_path, host_ip, server_port))
+        thread1 = multiprocessing.Process(target=start_https_server, args=(dut1.app.binary_path, host_ip, server_port))
         thread1.daemon = True
         thread1.start()
     dut1.start_app()
@@ -633,6 +648,7 @@ def test_examples_protocol_advanced_https_ota_example_bluedroid_gatts(env, extra
         print('Connected to AP with IP: {}'.format(ip_address))
     except DUT.ExpectTimeout:
         raise ValueError('ENV_TEST_FAILURE: Cannot connect to AP')
+        thread1.terminate()
 
     dut1.expect('Starting Advanced OTA example', timeout=30)
     print('writing to device: {}'.format('https://' + host_ip + ':' + str(server_port) + '/' + bin_name))
@@ -643,6 +659,7 @@ def test_examples_protocol_advanced_https_ota_example_bluedroid_gatts(env, extra
     dut1.expect('Loaded app from partition at offset', timeout=60)
     dut1.expect('Starting Advanced OTA example', timeout=30)
     dut1.reset()
+    thread1.terminate()
 
 
 @ttfw_idf.idf_example_test(env_tag='EXAMPLE_ETH_OTA')

examples/system/ota/native_ota_example/example_test.py

@@ -1,4 +1,5 @@
 import http.server
+import multiprocessing
 import os
 import random
 import re
@@ -6,7 +7,6 @@ import socket
 import ssl
 import struct
 import subprocess
-from threading import Thread
 
 import ttfw_idf
 from tiny_test_fw import DUT
@@ -157,7 +157,7 @@ def test_examples_protocol_native_ota_example(env, extra_data):
     # start test
     host_ip = get_my_ip()
     if (get_server_status(host_ip, server_port) is False):
-        thread1 = Thread(target=start_https_server, args=(dut1.app.binary_path, host_ip, server_port))
+        thread1 = multiprocessing.Process(target=start_https_server, args=(dut1.app.binary_path, host_ip, server_port))
         thread1.daemon = True
         thread1.start()
     dut1.start_app()
@@ -168,7 +168,7 @@ def test_examples_protocol_native_ota_example(env, extra_data):
             print('Connected to AP with IP: {}'.format(ip_address))
         except DUT.ExpectTimeout:
             raise ValueError('ENV_TEST_FAILURE: Cannot connect to AP')
-            thread1.close()
+            thread1.terminate()
         dut1.expect('Starting OTA example', timeout=30)
 
         print('writing to device: {}'.format('https://' + host_ip + ':' + str(server_port) + '/' + bin_name))
@@ -176,6 +176,7 @@ def test_examples_protocol_native_ota_example(env, extra_data):
         dut1.expect('Loaded app from partition at offset', timeout=60)
         dut1.expect('Starting OTA example', timeout=30)
         dut1.reset()
+    thread1.terminate()
 
 
 @ttfw_idf.idf_example_test(env_tag='EXAMPLE_ETH_OTA')
@@ -211,7 +212,7 @@ def test_examples_protocol_native_ota_example_truncated_bin(env, extra_data):
     # start test
     host_ip = get_my_ip()
     if (get_server_status(host_ip, server_port) is False):
-        thread1 = Thread(target=start_https_server, args=(dut1.app.binary_path, host_ip, server_port))
+        thread1 = multiprocessing.Process(target=start_https_server, args=(dut1.app.binary_path, host_ip, server_port))
         thread1.daemon = True
         thread1.start()
     dut1.start_app()
@@ -221,12 +222,14 @@ def test_examples_protocol_native_ota_example_truncated_bin(env, extra_data):
         print('Connected to AP with IP: {}'.format(ip_address))
     except DUT.ExpectTimeout:
         raise ValueError('ENV_TEST_FAILURE: Cannot connect to AP')
+        thread1.terminate()
     dut1.expect('Starting OTA example', timeout=30)
 
     print('writing to device: {}'.format('https://' + host_ip + ':' + str(server_port) + '/' + truncated_bin_name))
     dut1.write('https://' + host_ip + ':' + str(server_port) + '/' + truncated_bin_name)
     dut1.expect('native_ota_example: Image validation failed, image is corrupted', timeout=20)
     os.remove(binary_file)
+    thread1.terminate()
 
 
 @ttfw_idf.idf_example_test(env_tag='EXAMPLE_ETH_OTA')
@@ -261,7 +264,7 @@ def test_examples_protocol_native_ota_example_truncated_header(env, extra_data):
     # start test
     host_ip = get_my_ip()
     if (get_server_status(host_ip, server_port) is False):
-        thread1 = Thread(target=start_https_server, args=(dut1.app.binary_path, host_ip, server_port))
+        thread1 = multiprocessing.Process(target=start_https_server, args=(dut1.app.binary_path, host_ip, server_port))
         thread1.daemon = True
         thread1.start()
     dut1.start_app()
@@ -271,12 +274,14 @@ def test_examples_protocol_native_ota_example_truncated_header(env, extra_data):
         print('Connected to AP with IP: {}'.format(ip_address))
     except DUT.ExpectTimeout:
         raise ValueError('ENV_TEST_FAILURE: Cannot connect to AP')
+        thread1.terminate()
     dut1.expect('Starting OTA example', timeout=30)
 
     print('writing to device: {}'.format('https://' + host_ip + ':' + str(server_port) + '/' + truncated_bin_name))
     dut1.write('https://' + host_ip + ':' + str(server_port) + '/' + truncated_bin_name)
     dut1.expect('native_ota_example: received package is not fit len', timeout=20)
     os.remove(binary_file)
+    thread1.terminate()
 
 
 @ttfw_idf.idf_example_test(env_tag='EXAMPLE_ETH_OTA')
@@ -310,7 +315,7 @@ def test_examples_protocol_native_ota_example_random(env, extra_data):
     # start test
     host_ip = get_my_ip()
     if (get_server_status(host_ip, server_port) is False):
-        thread1 = Thread(target=start_https_server, args=(dut1.app.binary_path, host_ip, server_port))
+        thread1 = multiprocessing.Process(target=start_https_server, args=(dut1.app.binary_path, host_ip, server_port))
         thread1.daemon = True
         thread1.start()
     dut1.start_app()
@@ -320,12 +325,14 @@ def test_examples_protocol_native_ota_example_random(env, extra_data):
         print('Connected to AP with IP: {}'.format(ip_address))
     except DUT.ExpectTimeout:
         raise ValueError('ENV_TEST_FAILURE: Cannot connect to AP')
+        thread1.terminate()
     dut1.expect('Starting OTA example', timeout=30)
 
     print('writing to device: {}'.format('https://' + host_ip + ':' + str(server_port) + '/' + random_bin_name))
     dut1.write('https://' + host_ip + ':' + str(server_port) + '/' + random_bin_name)
     dut1.expect('esp_ota_ops: OTA image has invalid magic byte', timeout=20)
     os.remove(binary_file)
+    thread1.terminate()
 
 
 @ttfw_idf.idf_example_test(env_tag='EXAMPLE_ETH_OTA')

examples/system/ota/simple_ota_example/example_test.py

@@ -1,10 +1,10 @@
 import http.server
+import multiprocessing
 import os
 import re
 import socket
 import ssl
 import sys
-from threading import Thread
 
 import ttfw_idf
 from tiny_test_fw import DUT, Utility
@@ -68,6 +68,15 @@ def get_my_ip():
     return my_ip
 
 
+def get_server_status(host_ip, server_port):
+    sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
+    server_status = sock.connect_ex((host_ip, server_port))
+    sock.close()
+    if server_status == 0:
+        return True
+    return False
+
+
 def start_https_server(ota_image_dir, server_ip, server_port, server_file=None, key_file=None):
     os.chdir(ota_image_dir)
 
@@ -130,9 +139,10 @@ def test_examples_protocol_simple_ota_example(env, extra_data):
     sha256_bootloader, sha256_app = calc_all_sha256(dut1)
     # start test
     host_ip = get_my_ip()
-    thread1 = Thread(target=start_https_server, args=(dut1.app.binary_path, host_ip, 8000))
-    thread1.daemon = True
-    thread1.start()
+    if (get_server_status(host_ip, 8000) is False):
+        thread1 = multiprocessing.Process(target=start_https_server, args=(dut1.app.binary_path, host_ip, 8000))
+        thread1.daemon = True
+        thread1.start()
     dut1.start_app()
     dut1.expect('Loaded app from partition at offset 0x10000', timeout=30)
     check_sha256(sha256_bootloader, dut1.expect(re.compile(r'SHA-256 for bootloader:\s+([a-f0-9]+)'))[0])
@@ -142,12 +152,14 @@ def test_examples_protocol_simple_ota_example(env, extra_data):
         print('Connected to AP with IP: {}'.format(ip_address))
     except DUT.ExpectTimeout:
         raise ValueError('ENV_TEST_FAILURE: Cannot connect to AP')
+        thread1.terminate()
     dut1.expect('Starting OTA example', timeout=30)
 
     print('writing to device: {}'.format('https://' + host_ip + ':8000/simple_ota.bin'))
     dut1.write('https://' + host_ip + ':8000/simple_ota.bin')
     dut1.expect('Loaded app from partition at offset 0x110000', timeout=60)
     dut1.expect('Starting OTA example', timeout=30)
+    thread1.terminate()
 
 
 @ttfw_idf.idf_example_test(env_tag='Example_EthKitV1')
@@ -165,9 +177,10 @@ def test_examples_protocol_simple_ota_example_ethernet_with_spiram_config(env, e
     ttfw_idf.log_performance('simple_ota_bin_size', '{}KB'.format(bin_size // 1024))
     # start test
     host_ip = get_my_ip()
-    thread1 = Thread(target=start_https_server, args=(dut1.app.binary_path, host_ip, 8000))
-    thread1.daemon = True
-    thread1.start()
+    if (get_server_status(host_ip, 8000) is False):
+        thread1 = multiprocessing.Process(target=start_https_server, args=(dut1.app.binary_path, host_ip, 8000))
+        thread1.daemon = True
+        thread1.start()
     dut1.start_app()
     dut1.expect('Loaded app from partition at offset 0x10000', timeout=30)
     try:
@@ -175,12 +188,14 @@ def test_examples_protocol_simple_ota_example_ethernet_with_spiram_config(env, e
         print('Connected to AP with IP: {}'.format(ip_address))
     except DUT.ExpectTimeout:
         raise ValueError('ENV_TEST_FAILURE: Cannot connect to AP')
+        thread1.terminate()
     dut1.expect('Starting OTA example', timeout=30)
 
     print('writing to device: {}'.format('https://' + host_ip + ':8000/simple_ota.bin'))
     dut1.write('https://' + host_ip + ':8000/simple_ota.bin')
     dut1.expect('Loaded app from partition at offset 0x110000', timeout=60)
     dut1.expect('Starting OTA example', timeout=30)
+    thread1.terminate()
 
 
 @ttfw_idf.idf_example_test(env_tag='Example_Flash_Encryption_OTA')
@@ -201,9 +216,10 @@ def test_examples_protocol_simple_ota_example_with_flash_encryption(env, extra_d
     dut1.erase_flash()
     # start test
     host_ip = get_my_ip()
-    thread1 = Thread(target=start_https_server, args=(dut1.app.binary_path, host_ip, 8000))
-    thread1.daemon = True
-    thread1.start()
+    if (get_server_status(host_ip, 8000) is False):
+        thread1 = multiprocessing.Process(target=start_https_server, args=(dut1.app.binary_path, host_ip, 8000))
+        thread1.daemon = True
+        thread1.start()
     dut1.start_app()
     dut1.expect('Loaded app from partition at offset 0x20000', timeout=30)
     dut1.expect('Flash encryption mode is DEVELOPMENT (not secure)', timeout=10)
@@ -212,6 +228,7 @@ def test_examples_protocol_simple_ota_example_with_flash_encryption(env, extra_d
         print('Connected to AP with IP: {}'.format(ip_address))
     except DUT.ExpectTimeout:
         raise ValueError('ENV_TEST_FAILURE: Cannot connect to AP')
+        thread1.terminate()
     dut1.expect('Starting OTA example', timeout=30)
 
     print('writing to device: {}'.format('https://' + host_ip + ':8000/simple_ota.bin'))
@@ -219,6 +236,7 @@ def test_examples_protocol_simple_ota_example_with_flash_encryption(env, extra_d
     dut1.expect('Loaded app from partition at offset 0x120000', timeout=60)
     dut1.expect('Flash encryption mode is DEVELOPMENT (not secure)', timeout=10)
     dut1.expect('Starting OTA example', timeout=30)
+    thread1.terminate()
 
 
 @ttfw_idf.idf_example_test(env_tag='Example_Flash_Encryption_OTA_WiFi', target=['esp32c3'], nightly_run=True)
@@ -239,9 +257,10 @@ def test_examples_protocol_simple_ota_example_with_flash_encryption_wifi(env, ex
     dut1.erase_flash()
     # start test
     host_ip = get_my_ip()
-    thread1 = Thread(target=start_https_server, args=(dut1.app.binary_path, host_ip, 8000))
-    thread1.daemon = True
-    thread1.start()
+    if (get_server_status(host_ip, 8000) is False):
+        thread1 = multiprocessing.Process(target=start_https_server, args=(dut1.app.binary_path, host_ip, 8000))
+        thread1.daemon = True
+        thread1.start()
     dut1.start_app()
     dut1.expect('Loaded app from partition at offset 0x20000', timeout=30)
     dut1.expect('Flash encryption mode is DEVELOPMENT (not secure)', timeout=10)
@@ -250,6 +269,7 @@ def test_examples_protocol_simple_ota_example_with_flash_encryption_wifi(env, ex
         print('Connected to AP with IP: {}'.format(ip_address))
     except DUT.ExpectTimeout:
         raise ValueError('ENV_TEST_FAILURE: Cannot connect to AP')
+        thread1.terminate()
     dut1.expect('Starting OTA example', timeout=30)
 
     print('writing to device: {}'.format('https://' + host_ip + ':8000/simple_ota.bin'))
@@ -257,6 +277,7 @@ def test_examples_protocol_simple_ota_example_with_flash_encryption_wifi(env, ex
     dut1.expect('Loaded app from partition at offset 0x120000', timeout=60)
     dut1.expect('Flash encryption mode is DEVELOPMENT (not secure)', timeout=10)
     dut1.expect('Starting OTA example', timeout=30)
+    thread1.terminate()
 
 
 @ttfw_idf.idf_example_test(env_tag='Example_EthKitV1')
@@ -276,9 +297,10 @@ def test_examples_protocol_simple_ota_example_with_verify_app_signature_on_updat
     sha256_bootloader, sha256_app = calc_all_sha256(dut1)
     # start test
     host_ip = get_my_ip()
-    thread1 = Thread(target=start_https_server, args=(dut1.app.binary_path, host_ip, 8000))
-    thread1.daemon = True
-    thread1.start()
+    if (get_server_status(host_ip, 8000) is False):
+        thread1 = multiprocessing.Process(target=start_https_server, args=(dut1.app.binary_path, host_ip, 8000))
+        thread1.daemon = True
+        thread1.start()
     dut1.start_app()
     dut1.expect('Loaded app from partition at offset 0x20000', timeout=30)
     check_sha256(sha256_bootloader, dut1.expect(re.compile(r'SHA-256 for bootloader:\s+([a-f0-9]+)'))[0])
@@ -288,6 +310,7 @@ def test_examples_protocol_simple_ota_example_with_verify_app_signature_on_updat
         print('Connected to AP with IP: {}'.format(ip_address))
     except DUT.ExpectTimeout:
         raise ValueError('ENV_TEST_FAILURE: Cannot connect to AP')
+        thread1.terminate()
     dut1.expect('Starting OTA example', timeout=30)
 
     print('writing to device: {}'.format('https://' + host_ip + ':8000/simple_ota.bin'))
@@ -298,6 +321,7 @@ def test_examples_protocol_simple_ota_example_with_verify_app_signature_on_updat
 
     dut1.expect('Loaded app from partition at offset 0x120000', timeout=20)
     dut1.expect('Starting OTA example', timeout=30)
+    thread1.terminate()
 
 
 @ttfw_idf.idf_example_test(env_tag='Example_EthKitV12')
@@ -317,9 +341,10 @@ def test_examples_protocol_simple_ota_example_with_verify_app_signature_on_updat
     sha256_bootloader, sha256_app = calc_all_sha256(dut1)
     # start test
     host_ip = get_my_ip()
-    thread1 = Thread(target=start_https_server, args=(dut1.app.binary_path, host_ip, 8000))
-    thread1.daemon = True
-    thread1.start()
+    if (get_server_status(host_ip, 8000) is False):
+        thread1 = multiprocessing.Process(target=start_https_server, args=(dut1.app.binary_path, host_ip, 8000))
+        thread1.daemon = True
+        thread1.start()
     dut1.start_app()
     dut1.expect('Loaded app from partition at offset 0x20000', timeout=30)
     check_sha256(sha256_bootloader, dut1.expect(re.compile(r'SHA-256 for bootloader:\s+([a-f0-9]+)'))[0])
@@ -329,6 +354,7 @@ def test_examples_protocol_simple_ota_example_with_verify_app_signature_on_updat
         print('Connected to AP with IP: {}'.format(ip_address))
     except DUT.ExpectTimeout:
         raise ValueError('ENV_TEST_FAILURE: Cannot connect to AP')
+        thread1.terminate()
     dut1.expect('Starting OTA example', timeout=30)
 
     print('writing to device: {}'.format('https://' + host_ip + ':8000/simple_ota.bin'))
@@ -342,6 +368,7 @@ def test_examples_protocol_simple_ota_example_with_verify_app_signature_on_updat
 
     dut1.expect('Loaded app from partition at offset 0x120000', timeout=20)
     dut1.expect('Starting OTA example', timeout=30)
+    thread1.terminate()
 
 
 if __name__ == '__main__':