Paho-MQTT 身份验证错误 on pythonanywher.

Question

我正在尝试在我的 Linux 机器上使用一个简单的publish.single发布到 beebotte.com 上的 mqtt 主题，它工作正常，但在 python 上任何地方我都会收到身份验证错误。次要版本号有细微差异，那有什么不同吗？

这是我放入 python 控制台的代码：

import paho.mqtt.publish as publish
mqtt_host = "beebotte.com"
mqtt_topic = "climate/set/livingroom"
auth = {'username':"token:MY_SECRET_TOKEN"}
publish.single(mqtt_topic, "python sent", hostname=mqtt_host, auth = auth)

这是错误：

Python 2.7.6 (default, Oct 26 2016, 20:30:19) 
[GCC 4.8.4] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import paho.mqtt.publish as publish
>>> mqtt_host = "beebotte.com"
>>> mqtt_topic = "climate/set/livingroom"
>>> auth = {'username':"MY_SECRET_TOKEN"}
>>> publish.single(mqtt_topic, "python sent", hostname=mqtt_host, auth = auth)
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/home/<MYUSER>/python-email/local/lib/python2.7/site-packages/paho/mqtt/publish.py", line 216, in single
protocol, transport)
File "/home/<MYUSER>/python-email/local/lib/python2.7/site-packages/paho/mqtt/publish.py", line 152, in multiple
client.connect(hostname, port, keepalive)
File "/home/<MYUSER>/python-email/local/lib/python2.7/site-packages/paho/mqtt/client.py", line 768, in connect
return self.reconnect()
File "/home/<MYUSER>/python-email/local/lib/python2.7/site-packages/paho/mqtt/client.py", line 895, in reconnect
sock = socket.create_connection((self._host, self._port), source_address=(self._bind_address, 0))
File "/usr/lib/python2.7/socket.py", line 571, in create_connection
raise err
socket.error: [Errno 111] Connection refused
>>> 
>>> exit()

在这里它正在工作：

Python 2.7.13 (default, Nov 24 2017, 17:33:09) 
[GCC 6.3.0 20170516] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import paho.mqtt.publish as publish
>>> mqtt_host = "beebotte.com"
>>> mqtt_topic = "climate/set/livingroom"
>>> auth = {'username':"MY_SECRET_TOKEN"}
>>> publish.single(mqtt_topic, "python sent", hostname=mqtt_host, auth = auth)
>>> 
>>> exit()

编辑(我不确定这是否属实)： 密钥的实际格式为token:token_KxDxlcmXgQBDfWRNC(不是真实的)，beebotte.com 也接受2A4Gfgv0puYFBEVbBQX24szALcyDvMRh格式的所谓密钥 如果我使用密钥，它可以在 pythonanywhere (有时)工作。这让我相信这是令牌中:的某种格式问题。

所以现在的问题是如何格式化它才能正常工作。

Answer 1

我不认为 mqtt 会在 PythonAnywhere 上的免费帐户上运行。免费帐户只能通过使用http(s)的代理连接到特定的站点白名单。如果在某处有一个 http 到 mqtt 的桥接，你可以使用它。