Android Question cloudMQTT

derez · Aug 28, 2018

I'm trying to get the MQTT server from cloudMQTT work for me (while everything works with my home mqtt server).
I see in their documentation :

You are sometimes forced to format a connection URL while connecting via client libraries, it should look like mqtt://userassword@serverort .

I put the data of my project there in this b4a line:

B4X:

Private link As String = "mqtt://tfmntyfc:Z_IGRhMnk05F@m21.cloudmqtt.com:19289"

I get error in the initialization line:

B4X:

  client.Initialize("client",link, "WT"&Rnd(1,10000 ) )

*** Service (starter) Create ***
Error occurred on line: 19 (Starter)
java.lang.IllegalArgumentException: mqtt://tfmntyfc:Z_IGRhMnk05F@m21.cloudmqtt.com:19289
at org.eclipse.paho.client.mqttv3.MqttConnectOptions.validateURI(MqttConnectOptions.java:470)
at org.eclipse.paho.client.mqttv3.MqttAsyncClient.<init>(MqttAsyncClient.java:273)
at org.eclipse.paho.client.mqttv3.MqttAsyncClient.<init>(MqttAsyncClient.java:167)
at anywheresoftware.b4j.objects.MqttAsyncClientWrapper.Initialize(MqttAsyncClientWrapper.java:42)
...

Changed to tcp instead of mqtt, with this it passes the initialization but fails on client.connect, I get success = false in client_connect sub:

** Activity (main) Resume **
permit audio
(UnknownHostException) java.net.UnknownHostException: tfmntyfc:Z_IGRhMnk05F@m21.cloudmqtt.com
(UnknownHostException) java.net.UnknownHostException: tfmntyfc:Z_IGRhMnk05F@m21.cloudmqtt.com
Error occurred on line: 46 (Starter)
java.lang.reflect.InvocationTargetException
at java.lang.reflect.Method.invoke(Native Method)
at anywheresoftware.b4a.shell.Shell.runGoodChain(Shell.java:463)
at anywheresoftware.b4a.shell.Shell.raiseEventImpl(Shell.java:285)
at anywheresoftware.b4a.shell.Shell.raiseEvent(Shell.java:249)
at java.lang.reflect.Method.invoke(Native Method)
...

With ssl it is the same as in tcp.

Help please !

Peter Simpson · Aug 28, 2018

mqtt://user

assword@server

ort

Have you tried port 12100 or port 14925?

derez · Aug 29, 2018

No, this is what I have for my instance

Tried the other ports as well with the same results.

rbghongade · Aug 29, 2018

I have used this successfully:

B4X:

client.Initialize("client", "tcp://m21.cloudmqtt.com:19289", "WT"&Rnd(1,10000 ))
Dim mo As MqttConnectOptions
mo.Initialize(user,password)
client.Connect2(mo)

regards,

derez · Aug 29, 2018

Thanks, that solved it

Android Question cloudMQTT

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