質問編集履歴
2
発生しているエラーの内容を更新しました。
test
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test
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@@ -54,15 +54,15 @@
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pi@raspberrypi:~/dev/aws/pub $ python alpn_mqtt.py
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2020-01-21
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2020-01-21 11:11:30,045 - root - INFO - open ssl version:OpenSSL 1.1.1d 10 Sep 2019
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2020-01-21
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2020-01-21 11:11:30,051 - root - INFO - start connect
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2020-01-21
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2020-01-21 11:14:30,351 - root - ERROR - exception main()
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2020-01-21
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2020-01-21 11:14:30,351 - root - ERROR - e obj:{}
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2020-01-21
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2020-01-21 11:14:30,352 - root - ERROR - message:
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Traceback (most recent call last):
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return socket.create_connection(addr, source_address=source, timeout=self._keepalive)
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File "/usr/lib/python2.7/socket.py", line 55
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File "/usr/lib/python2.7/socket.py", line 575, in create_connection
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raise err
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error: [Errno 101] Network is unreachable
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```
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IoT_protocol_name = "x-amzn-mqtt-ca"
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aws_iot_endpoint = "
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aws_iot_endpoint = "hogehoge" # <random>.iot.<region>.amazonaws.com
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url = "https://{}".format(aws_iot_endpoint)
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1
プログラムコードを追加しました。
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AWS
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AWS MQTTの実装について
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AWSに公開されている、次の記事の内容を試しています。
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https://aws.amazon.com/jp/blogs/news/how-to-implement-mqtt-with-tls-client-authentication-on-port-443-from-client-devices-python/
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サンプルプログラムを使って、MQTT Publishテストを行いたいです。
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①前提条件のチェック
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OpenSSL 1.1.1d 10 Sep 2019
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Python version 2.7.16
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②証明書作成
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rootCA.pem
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hogehoge-certificate.pem.crt
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hogehoge-private.pem.key
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証明書
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③証明書の有効化
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f2b08833e3-certificate.pem.crt f2b08833e3-private.pem.key rootCA.pem
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④ポリシーをアタッチ
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④動作確認（MQTTのPub
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④動作確認（MQTTのPublish)
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プログラムを実行すると、次のエラーが発生してしまいます。
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40
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**connect success**が表示されないので、接続エラーが発生していると思うのですが、
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原因が分からず困っております。
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```text
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pi@raspberrypi:~/dev/aws/
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2020-01-20
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2020-01-20
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2020-01-20 15:11:49,243 - AWSIoTPythonSDK.core.protocol.mqtt_core - INFO - Performing async connect...
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2020-01-20 15:11:49,243 - AWSIoTPythonSDK.core.protocol.mqtt_core - INFO - Keep-alive: 600.000000 sec
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2020-01-20 15:11:49,247 - AWSIoTPythonSDK.core.protocol.internal.workers - DEBUG - Event consuming thread started
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2020-01-20 15:11:49,248 - AWSIoTPythonSDK.core.protocol.mqtt_core - DEBUG - Passing in general notification callbacks to internal client...
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2020-01-20 15:11:49,248 - AWSIoTPythonSDK.core.protocol.internal.clients - DEBUG - Filling in fixed event callbacks: CONNACK, DISCONNECT, MESSAGE
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pi@raspberrypi:~/dev/aws/pub $ python alpn_mqtt.py
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2020-01-21 09:40:36,252 - root - INFO - open ssl version:OpenSSL 1.1.1d 10 Sep 2019
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2020-01-21 09:40:36,259 - root - INFO - start connect
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2020-01-21 09:40:36,268 - root - ERROR - exception main()
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2020-01-21 09:40:36,269 - root - ERROR - e obj:{}
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2020-01-21 09:40:36,269 - root - ERROR - message:
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Traceback (most recent call last):
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File "alpn_mqtt.py", line 45, in <module>
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mqttc.connect(aws_iot_endpoint, port=443)
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File "/usr/local/lib/python2.7/dist-packages/paho/mqtt/client.py", line 937, in connect
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return self.reconnect()
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File "/usr/local/lib/python2.7/dist-packages/paho/mqtt/client.py", line 1071, in reconnect
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sock = self._create_socket_connection()
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File "/usr/local/lib/python2.7/dist-packages/paho/mqtt/client.py", line 3522, in _create_socket_connection
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return socket.create_connection(addr, source_address=source, timeout=self._keepalive)
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File "/usr/lib/python2.7/socket.py", line 557, in create_connection
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for res in getaddrinfo(host, port, 0, SOCK_STREAM):
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gaierror: [Errno -2] Name or service not known
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```
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##プログラムコード
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```python
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from __future__ import print_function
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import sys
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import ssl
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import time
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106
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107
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import datetime
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108
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109
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import logging, traceback
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import paho.mqtt.client as mqtt
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112
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113
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114
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IoT_protocol_name = "x-amzn-mqtt-ca"
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aws_iot_endpoint = "AWS_IoT_ENDPOINT_HERE" # <random>.iot.<region>.amazonaws.com
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url = "https://{}".format(aws_iot_endpoint)
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ca = "YOUR/ROOT/CA/PATH"
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cert = "YOUR/DEVICE/CERT/PATH"
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private = "YOUR/DEVICE/KEY/PATH"
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129
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130
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131
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logger = logging.getLogger()
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logger.setLevel(logging.DEBUG)
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handler = logging.StreamHandler(sys.stdout)
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136
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log_format = logging.Formatter('%(asctime)s - %(name)s - %(levelname)s - %(message)s')
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138
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handler.setFormatter(log_format)
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logger.addHandler(handler)
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142
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143
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144
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145
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def ssl_alpn():
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146
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147
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try:
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148
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149
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#debug print opnessl version
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150
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151
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logger.info("open ssl version:{}".format(ssl.OPENSSL_VERSION))
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152
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153
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ssl_context = ssl.create_default_context()
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154
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155
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ssl_context.set_alpn_protocols([IoT_protocol_name])
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156
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157
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ssl_context.load_verify_locations(cafile=ca)
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158
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159
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ssl_context.load_cert_chain(certfile=cert, keyfile=private)
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160
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161
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162
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return ssl_context
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165
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except Exception as e:
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166
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167
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print("exception ssl_alpn()")
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168
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169
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raise e
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170
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171
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172
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173
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if __name__ == '__main__':
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174
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+
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175
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topic = "test/date"
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176
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+
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177
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try:
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178
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+
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179
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+
mqttc = mqtt.Client()
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180
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+
|
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181
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+
ssl_context= ssl_alpn()
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182
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+
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183
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+
mqttc.tls_set_context(context=ssl_context)
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184
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+
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185
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+
logger.info("start connect")
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186
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+
|
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187
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+
mqttc.connect(aws_iot_endpoint, port=443)
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188
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+
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189
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+
logger.info("connect success")
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190
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+
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191
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mqttc.loop_start()
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192
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+
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193
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+
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194
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+
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195
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+
while True:
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196
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197
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now = datetime.datetime.now().strftime('%Y-%m-%dT%H:%M:%S')
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198
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+
|
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199
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+
logger.info("try to publish:{}".format(now))
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200
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201
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mqttc.publish(topic, now)
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202
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+
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203
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+
time.sleep(1)
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204
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+
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205
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+
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206
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207
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+
except Exception as e:
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208
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209
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logger.error("exception main()")
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210
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+
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211
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+
logger.error("e obj:{}".format(vars(e)))
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212
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+
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213
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+
logger.error("message:{}".format(e.message))
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214
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+
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215
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+
traceback.print_exc(file=sys.stdout)
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216
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+
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217
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+
```
|