amazon-web-services - 无法使用 AWSIoTPythonSDK 通过 MQTT 连接到 AWS IoT Core

Question

我已逐步遵循 AWS 教程。https://aws.amazon.com/premiumsupport/knowledge-center/iot-core-publish-mqtt-messages-python/

我用 * 创建了开放式策略，注册了一个东西并将其附加到策略中，生成、下载并激活了证书。我尝试使用适用于 Python v2 的 AWS IoT SDK 和原始 sdk 连接并发布到订阅，但都不起作用。我使用的代码直接来自 AWS 的演示示例连接代码，但它们只是无法连接。

在使用适用于 Python v2 的 AWS IoT 开发工具包时，我收到以下错误消息：

RuntimeError: 1038 (AWS_IO_FILE_VALIDATION_FAILURE): A file was read and the input did not match the expected value

使用原始 SDK 时，我收到以下错误消息：

TimeoutError: [Errno 60] Operation timed out

我正在使用的python代码：

# Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
# SPDX-License-Identifier: MIT-0

import time as t
import json
import AWSIoTPythonSDK.MQTTLib as AWSIoTPyMQTT

# Define ENDPOINT, CLIENT_ID, PATH_TO_CERT, PATH_TO_KEY, PATH_TO_ROOT, MESSAGE, TOPIC, and RANGE
ENDPOINT = "XXXXX-ats.iot.ap-southeast-2.amazonaws.com"
CLIENT_ID = "testDevice"
PATH_TO_CERT = "certs/XXXX-certificate.pem.crt"
PATH_TO_KEY = "certs/XXXX-private.pem.key"
PATH_TO_ROOT = "certs/root.pem"
MESSAGE = "Hello World"
TOPIC = "test/testing"
RANGE = 20

myAWSIoTMQTTClient = AWSIoTPyMQTT.AWSIoTMQTTClient(CLIENT_ID)
myAWSIoTMQTTClient.configureEndpoint(ENDPOINT, 8883)
myAWSIoTMQTTClient.configureCredentials(PATH_TO_ROOT, PATH_TO_KEY, PATH_TO_CERT)

myAWSIoTMQTTClient.connect()
print('Begin Publish')
for i in range (RANGE):
    data = "{} [{}]".format(MESSAGE, i+1)
    message = {"message" : data}
    myAWSIoTMQTTClient.publish(TOPIC, json.dumps(message), 1) 
    print("Published: '" + json.dumps(message) + "' to the topic: " + "'test/testing'")
    t.sleep(0.1)
print('Publish End')
myAWSIoTMQTTClient.disconnect()

（我审查了端点和证书 ID）

（我正在使用 macbook air 并在公立学校网络上）

标签： amazon-web-servicesaws-sdkmqttaws-iotaws-iot-core

Answer 1

我回家测试了它，它工作得很好。如果您有同样的问题，请尝试排除网络故障。我认为我的学校阻止了 MQTT 或其他东西。