为什么从paho raspberry pi发布到Mosca node js给我一个错误？

Question

我正在尝试从运行在我的raspberry pi上的Paho库发布到运行在windows机器上的nodejs服务器上的moscamqtt代理，但没有发生任何事情 那么问题是什么 注意：当我从nodejs客户机连接到代理时，它可以工作 这是我的nodejs代码

var mosca = require('mosca');

var settings = {
  port: 1883
};

//here we start mosca
var server = new mosca.Server(settings);
server.on('ready', setup);

// fired when the mqtt server is ready
function setup() {
  console.log('Mosca server is up and running');
}

// fired whena  client is connected
server.on('clientConnected', function(client) {
  console.log('client connected', client.id);
});

// fired when a message is received
server.on('published', function(packet, client) {
  console.log('Published : ', packet.payload);
});

// fired when a client subscribes to a topic
server.on('subscribed', function(topic, client) {
  console.log('subscribed : ', topic);
});

// fired when a client subscribes to a topic
server.on('unsubscribed', function(topic, client) {
  console.log('unsubscribed : ', topic);
});

// fired when a client is disconnecting
server.on('clientDisconnecting', function(client) {
  console.log('clientDisconnecting : ', client.id);
});

// fired when a client is disconnected
server.on('clientDisconnected', function(client) {
  console.log('clientDisconnected : ', client.id);
});

// this is my client request

var mqtt = require('mqtt');

client = mqtt.connect('mqtt://192.168.10.99:1883');

client.subscribe('presence');

console.log('Client publishing.. ');
client.publish('presence', 'Client 1 is alive.. Test Ping! ' + Date());

client.end();

这是运行在我的raspberry pi上的python代码

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我的python错误是：

sudo python clientpaho.py
Traceback (most recent call last):
  File "clientpaho.py", line 40, in <module>
    mqttc.loop_forever()
  File "/usr/local/lib/python2.7/dist-packages/paho/mqtt/client.py", line 1481, in loop_forever
    rc = self.loop(timeout, max_packets)
  File "/usr/local/lib/python2.7/dist-packages/paho/mqtt/client.py", line 1003, in loop
    rc = self.loop_read(max_packets)
  File "/usr/local/lib/python2.7/dist-packages/paho/mqtt/client.py", line 1284, in loop_read
    rc = self._packet_read()
  File "/usr/local/lib/python2.7/dist-packages/paho/mqtt/client.py", line 1849, in _packet_read
    rc = self._packet_handle()
  File "/usr/local/lib/python2.7/dist-packages/paho/mqtt/client.py", line 2311, in _packet_handle
    return self._handle_connack()
  File "/usr/local/lib/python2.7/dist-packages/paho/mqtt/client.py", line 2372, in _handle_connack
    self.on_connect(self, self._userdata, flags_dict, result)
TypeError: on_connect() takes exactly 3 arguments (4 given)

Answer 1

最后，这是我解决的问题：

Paho客户端无法连接到nodejs==>；在windows上禁用防火墙

由在连接函数上引起的错误它需要4个参数而不是像这样的3个参数on_connect(self, self._userdata, flags_dict, result)

谢谢你