esp-idf/examples/protocols/mqtt/wss/pytest_mqtt_wss_example.py

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#!/usr/bin/env python
#
# SPDX-FileCopyrightText: 2022 Espressif Systems (Shanghai) CO LTD
# SPDX-License-Identifier: Unlicense OR CC0-1.0
import logging
import os
import re
import ssl
import sys
from threading import Event, Thread
import paho.mqtt.client as mqtt
import pexpect
import pytest
from pytest_embedded import Dut
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event_client_connected = Event()
event_stop_client = Event()
event_client_received_correct = Event()
message_log = ''
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# The callback for when the client receives a CONNACK response from the server.
def on_connect(client, userdata, flags, rc): # type: (mqtt.Client, tuple, bool, str) -> None
_ = (userdata, flags)
print('Connected with result code ' + str(rc))
event_client_connected.set()
client.subscribe('/topic/qos0')
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def mqtt_client_task(client): # type: (mqtt.Client) -> None
while not event_stop_client.is_set():
client.loop()
# The callback for when a PUBLISH message is received from the server.
def on_message(client, userdata, msg): # type: (mqtt.Client, tuple, mqtt.client.MQTTMessage) -> None
_ = userdata
global message_log
payload = msg.payload.decode()
if not event_client_received_correct.is_set() and payload == 'data':
client.publish('/topic/qos0', 'data_to_esp32')
if msg.topic == '/topic/qos0' and payload == 'data':
event_client_received_correct.set()
message_log += 'Received data:' + msg.topic + ' ' + payload + '\n'
@pytest.mark.esp32
@pytest.mark.ethernet
def test_examples_protocol_mqtt_wss(dut): # type: (Dut) -> None
broker_url = ''
broker_port = 0
"""
steps: |
1. join AP and connects to wss broker
2. Test connects a client to the same broker
3. Test evaluates it received correct qos0 message
4. Test ESP32 client received correct qos0 message
"""
# check and log bin size
binary_file = os.path.join(dut.app.binary_path, 'mqtt_websocket_secure.bin')
bin_size = os.path.getsize(binary_file)
logging.info('[Performance][mqtt_websocket_secure_bin_size]: %s KB', bin_size // 1024)
# Look for host:port in sdkconfig
try:
value = re.search(r'\:\/\/([^:]+)\:([0-9]+)', dut.app.sdkconfig.get('BROKER_URI'))
assert value is not None
broker_url = value.group(1)
broker_port = int(value.group(2))
except Exception:
print('ENV_TEST_FAILURE: Cannot find broker url in sdkconfig')
raise
client = None
# 1. Test connects to a broker
try:
client = mqtt.Client(transport='websockets')
client.on_connect = on_connect
client.on_message = on_message
client.tls_set(None,
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None,
None, cert_reqs=ssl.CERT_NONE, tls_version=ssl.PROTOCOL_TLSv1_2, ciphers=None)
print('Connecting...')
client.connect(broker_url, broker_port, 60)
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except Exception:
print('ENV_TEST_FAILURE: Unexpected error while connecting to broker {}: {}:'.format(broker_url, sys.exc_info()[0]))
raise
# Starting a py-client in a separate thread
thread1 = Thread(target=mqtt_client_task, args=(client,))
thread1.start()
try:
print('Connecting py-client to broker {}:{}...'.format(broker_url, broker_port))
if not event_client_connected.wait(timeout=30):
raise ValueError('ENV_TEST_FAILURE: Test script cannot connect to broker: {}'.format(broker_url))
try:
ip_address = dut.expect(r'IPv4 address: (\d+\.\d+\.\d+\.\d+)[^\d]', timeout=30)[0]
print('Connected to AP with IP: {}'.format(ip_address))
except pexpect.TIMEOUT:
print('ENV_TEST_FAILURE: Cannot connect to AP')
raise
print('Checking py-client received msg published from esp...')
if not event_client_received_correct.wait(timeout=30):
raise ValueError('Wrong data received, msg log: {}'.format(message_log))
print('Checking esp-client received msg published from py-client...')
dut.expect(r'DATA=data_to_esp32', timeout=30)
finally:
event_stop_client.set()
thread1.join()