Jensen
Reputation: 53
Socket Error: Errno 111 Connection Refused
im trying to connect to a locally hosted HiveMQ broker using a RaspberryPi Virtual Machine (Using Oracle VM VirtualBox). im using Mqtt.fx aswell as a second client to look at if the published messages are being recieved.
i was using "iot.eclipse.org" before i tried using the local hivemq broker and it worked fine. so im not too sure what the problem is. maybe im just forgetting something.
im using the paho mqtt module. and my library code is heavily ripped from here: https://pypi.python.org/pypi/paho-mqtt
im using a library/module and then referencing that in another .py file. This is the code from the library/module:
import paho.mqtt.client as mqtt
client = mqtt.Client()
#Called on connection to server/broker
def on_connect(client, userdata, rc):
print("connected with result code"+str(rc))
#Called when new message published to subscribed topic
def on_message(client, userdata, msg):
print("NEW PUBLISH: "+msg.topic+" "+str(msg.payload))
#configure connection to the broker
def setup():
client.on_connect = on_connect
client.on_message = on_message
#Subscribe
def subscribe(topic):
print("subscribing to topic: " +topic)
client.subscribe(topic)
#Connect to broker
def connect():
client.connect("127.0.0.1", 1883, 60)
def publish(topic, msg):
client.publish(topic, msg)
and this is the code im actually running. Just 2 simple publishes:
import mqttLib as owly
owly.setup()
owly.connect()
owly.publish("test/library", "test okay :)")
num1 = input("1st number: ")
num2 = input("2nd number: ")
mult = num1 * num2
owly.publish("test/mult", mult)
This is the message i get after running it:
Traceback (most recent call last):
File "mqttTest.py", line 6, in <module>
owly.connect()
File "/home/rpi/python/MQTT/mqttLib.py", line 27, in connect
client.connect("127.0.0.1", 1883, 60)
File "/usr/local/lib/python2.6/dist-packages/paho/mqtt/client.py", line 612, In connect
return self.reconnect()
File "/usr/local/lib/python2.6/dist-packages/paho/mqtt/client.py", line 732, in reconnect
sock = socket.create_connection((self._host, self._port))
File "/usr/lib/python2.6/socket.py", line 514, in create_connection
raise error, msg
socket.error: [Errno 111] Connection refused
The fact it works on a remotely hosted broker. and not locally confuses me.
i have stripped off most of the plugins on HiveMQ and left the message log plugin on HiveMQ aswell so i dont think its anything to do with authentication.
i think the virtual machine im using is ubuntu if that helps!
Thank you for your time in advance!
EDITED
added ifconfig output:
rpi@RaspberryPi:~$ ifconfig
eth0 Link encap:Ethernet HWaddr 08:00:27:5b:26:64
inet addr:192.168.56.101 Bcast:192.168.56.255 Mask:255.255.255.0
inet6 addr: fe80::a00:27ff:fe5b:2664/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:607 errors:0 dropped:0 overruns:0 frame:0
TX packets:12 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:82290 (82.2 KB) TX bytes:1920 (1.9 KB)
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
added netstat -anp output:
rpi@RaspberryPi:~$ netstat -anp
(Not all processes could be identified, non-owned process info
will not be shown, you would have to be root to see it all.)
Active Internet connections (servers and established)
Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name
udp 0 0 0.0.0.0:68 0.0.0.0:* -
Active UNIX domain sockets (servers and established)
Proto RefCnt Flags Type State I-Node PID/Program name Path
unix 2 [ ACC ] STREAM LISTENING 5465 1017/lxterminal /tmp/.lxterminal-socket:0.0-rpi
unix 2 [ ACC ] STREAM LISTENING 2354 - @/com/ubuntu/upstart
unix 2 [ ACC ] STREAM LISTENING 3653 - /tmp/.X11-unix/X0
unix 2 [ ACC ] STREAM LISTENING 3652 - @/tmp/.X11-unix/X0
unix 2 [ ] DGRAM 2462 - @/org/kernel/udev/udevd
unix 2 [ ACC ] STREAM LISTENING 4693 891/dbus-daemon @/tmp/dbus-DYueHXFGGf
unix 2 [ ACC ] STREAM LISTENING 4524 814/gnome-keyring-d /tmp/keyring-OM3Fh4/control
unix 2 [ ACC ] STREAM LISTENING 5019 913/gam_server @/tmp/fam-rpi-
unix 2 [ ] DGRAM 5068 - @/org/freedesktop/hal/udev_event
unix 2 [ ACC ] STREAM LISTENING 4680 - /tmp/ssh-ESoUnvu822/agent.822
unix 2 [ ACC ] STREAM LISTENING 5037 - @/var/run/hald/dbus-ejQUT9OaXl
unix 2 [ ACC ] STREAM LISTENING 4832 904/pcmanfm /tmp/.pcmanfm-socket:0.0-rpi
unix 2 [ ACC ] STREAM LISTENING 3497 - /var/run/dbus/system_bus_socket
unix 2 [ ACC ] STREAM LISTENING 4834 909/menu-cached /tmp/.menu-cached-:0-rpi
unix 2 [ ACC ] STREAM LISTENING 4966 814/gnome-keyring-d /tmp/keyring-OM3Fh4/pkcs11
unix 6 [ ] DGRAM 3504 - /dev/log
unix 2 [ ACC ] STREAM LISTENING 5014 814/gnome-keyring-d /tmp/keyring-OM3Fh4/ssh
unix 2 [ ACC ] STREAM LISTENING 5042 - @/var/run/hald/dbus-9woYq1KdE9
unix 3 [ ] STREAM CONNECTED 5468 -
unix 3 [ ] STREAM CONNECTED 5467 1017/lxterminal
unix 3 [ ] STREAM CONNECTED 5463 - @/tmp/.X11-unix/X0
unix 3 [ ] STREAM CONNECTED 5462 1017/lxterminal
unix 2 [ ] DGRAM 5365 -
unix 3 [ ] STREAM CONNECTED 5288 - @/var/run/hald/dbus-ejQUT9OaXl
unix 3 [ ] STREAM CONNECTED 5287 -
unix 3 [ ] STREAM CONNECTED 5283 - @/var/run/hald/dbus-ejQUT9OaXl
unix 3 [ ] STREAM CONNECTED 5239 -
unix 3 [ ] STREAM CONNECTED 5237 - /var/run/dbus/system_bus_socket
unix 3 [ ] STREAM CONNECTED 5236 -
unix 3 [ ] STREAM CONNECTED 5144 - @/var/run/hald/dbus-ejQUT9OaXl
unix 3 [ ] STREAM CONNECTED 5134 -
unix 3 [ ] STREAM CONNECTED 5063 - @/var/run/hald/dbus-9woYq1KdE9
unix 3 [ ] STREAM CONNECTED 5062 -
unix 3 [ ] STREAM CONNECTED 5039 - /var/run/dbus/system_bus_socket
unix 3 [ ] STREAM CONNECTED 5038 -
unix 3 [ ] STREAM CONNECTED 5025 - /var/run/dbus/system_bus_socket
unix 3 [ ] STREAM CONNECTED 5024 904/pcmanfm
unix 3 [ ] STREAM CONNECTED 5022 913/gam_server @/tmp/fam-rpi-
unix 3 [ ] STREAM CONNECTED 5021 904/pcmanfm
unix 2 [ ] DGRAM 4969 814/gnome-keyring-d
unix 3 [ ] STREAM CONNECTED 4964 891/dbus-daemon @/tmp/dbus-DYueHXFGGf
unix 3 [ ] STREAM CONNECTED 4963 814/gnome-keyring-d
unix 3 [ ] STREAM CONNECTED 4842 909/menu-cached /tmp/.menu-cached-:0-rpi
unix 3 [ ] STREAM CONNECTED 4838 902/lxpanel
unix 3 [ ] STREAM CONNECTED 4830 - @/tmp/.X11-unix/X0
unix 3 [ ] STREAM CONNECTED 4829 904/pcmanfm
unix 3 [ ] STREAM CONNECTED 4796 - @/tmp/.X11-unix/X0
unix 3 [ ] STREAM CONNECTED 4795 901/xscreensaver
unix 3 [ ] STREAM CONNECTED 4788 - @/tmp/.X11-unix/X0
unix 3 [ ] STREAM CONNECTED 4787 902/lxpanel
unix 3 [ ] STREAM CONNECTED 4762 - @/tmp/.X11-unix/X0
unix 3 [ ] STREAM CONNECTED 4761 897/openbox
unix 3 [ ] STREAM CONNECTED 4701 - @/tmp/.X11-unix/X0
unix 3 [ ] STREAM CONNECTED 4700 822/lxsession
unix 3 [ ] STREAM CONNECTED 4697 - @/tmp/.X11-unix/X0
unix 3 [ ] STREAM CONNECTED 4696 890/dbus-launch
unix 3 [ ] STREAM CONNECTED 4695 891/dbus-daemon
unix 3 [ ] STREAM CONNECTED 4694 891/dbus-daemon
unix 3 [ ] STREAM CONNECTED 4683 - @/tmp/.X11-unix/X0
unix 3 [ ] STREAM CONNECTED 4682 890/dbus-launch
unix 3 [ ] STREAM CONNECTED 4673 - @/tmp/.X11-unix/X0
unix 3 [ ] STREAM CONNECTED 4672 882/VBoxClient
unix 3 [ ] STREAM CONNECTED 4671 - @/tmp/.X11-unix/X0
unix 3 [ ] STREAM CONNECTED 4670 882/VBoxClient
unix 3 [ ] STREAM CONNECTED 4666 - @/tmp/.X11-unix/X0
unix 3 [ ] STREAM CONNECTED 4665 875/VBoxClient
unix 3 [ ] STREAM CONNECTED 4664 - @/tmp/.X11-unix/X0
unix 3 [ ] STREAM CONNECTED 4663 875/VBoxClient
unix 3 [ ] STREAM CONNECTED 4656 - @/tmp/.X11-unix/X0
unix 3 [ ] STREAM CONNECTED 4655 866/VBoxClient
unix 3 [ ] STREAM CONNECTED 4527 - /var/run/dbus/system_bus_socket
unix 3 [ ] STREAM CONNECTED 4526 -
unix 3 [ ] STREAM CONNECTED 4440 - /var/run/dbus/system_bus_socket
unix 3 [ ] STREAM CONNECTED 4439 -
unix 3 [ ] STREAM CONNECTED 4415 - /var/run/dbus/system_bus_socket
unix 3 [ ] STREAM CONNECTED 4414 -
unix 3 [ ] STREAM CONNECTED 4402 - /var/run/dbus/system_bus_socket
unix 3 [ ] STREAM CONNECTED 4401 -
unix 2 [ ] DGRAM 4400 -
unix 2 [ ] DGRAM 4355 -
unix 3 [ ] STREAM CONNECTED 4356 - @/tmp/.X11-unix/X0
unix 3 [ ] STREAM CONNECTED 3663 -
unix 3 [ ] STREAM CONNECTED 3517 - /var/run/dbus/system_bus_socket
unix 3 [ ] STREAM CONNECTED 3516 -
unix 3 [ ] STREAM CONNECTED 3515 -
unix 3 [ ] STREAM CONNECTED 3514 -
unix 3 [ ] DGRAM 2494 -
unix 3 [ ] DGRAM 2493 - unix 3 [ ] STREAM CONNECTED 2445 - @/com/ubuntu/upstart
unix 3 [ ] STREAM CONNECTED 2444 -
r
Upvotes: 3
Views: 21129
Answers (1)
hardillb
Reputation: 59618
As mentioned in the comments, 127.0.0.1 is the local address of the VM, what you need to use is the IP address of the host where the broker is running.
In this case the broker host is on the VM host, you can get address of the VM host using the ip route command on the VM, it's output it will look something like this:
default via 192.168.56.100 dev eth0
192.168.56.0/24 dev eth0 proto kernel scope link src 192.168.56.100
The IP address you want to use for your broker should be the one in the line that starts with default, in the example case 192.168.56.100
Upvotes: 3
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