Re: [paho-dev] Java best practive having subscriber + publisher object

[Marc L Cohen <mlcohen@xxxxxxxxxx>]

Sounds like you are using the same ClientID for both. Problem is, if the persistence allowed you to do that, the server would disconnect the first client when it connects the second one. You need to use different ClientIDs for each client. The persistence directory name is based on a combination of the ClientID and the server identification.


Marc L. Cohen
MessageSight Test/Development
Internet:mlcohen@xxxxxxxxxx
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"paho@xxxxxxxxxx" ---05/08/2014 12:19:52 PM---Hi all, I have a subscriber thread and wanted to implement a static publisher.

From: "paho@xxxxxxxxxx" <paho@xxxxxxxxxx>
To: paho-dev@xxxxxxxxxxx
Date: 05/08/2014 12:19 PM
Subject: [paho-dev] Java best practive having subscriber + publisher object
Sent by: paho-dev-bounces@xxxxxxxxxxx

---

Hi all,

I have a subscriber thread and wanted to implement a static publisher.
Now I am getting a "Persistence already in use (32200)" error, because I
am using the same Persistence.

Therefor I have some questions now:
What is "MqttDefaultFilePersistence dataStore = new
MqttDefaultFilePersistence(tmpDir);" good for?
Do I really need this?

And last but not least: What is a good handling to get around with it? I
read something about MqttDefaultFilePersistence().open() ... but don't
have an idea how to handle/ use it.

If you have concerns about my usage, I am free to change it. A little
example would be great. Maybe you have some good example blog entry or
similar.
To get a better view on it, here are my subscriber
(https://gist.github.com/cygairko/78422c072a3065a83607) and publisher
(https://gist.github.com/cygairko/621ebf14b3d1a47e09f6) (or what I have
by now).

Thanks in advance for your help.

Best regards
Alex
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