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Re: [mosquitto-dev] mosquitto-dev Digest, Vol 47, Issue 7
Are you the publisher too? How about json encode it? most json encoders also support a pretty or human print option to format it for easier human consumption.

See also jpmens / jo https://github.com/jpmens/jo

On 11/22/2017 10:24 AM, Surendra Manikandan wrote:
Thank you guys!!

Brandon understood my requirement, it is My broker publishes messages in HEX format and when I subscribe to it using command "mosquitto_sub -h <host> -p <port> -t <topic> " , it prints the payload as invalid characters. Actually it is being published in HEX format so it should be read by sub in HEX. I like to know how to get this done? Or any existing solution available for this.

On Nov 22, 2017 10:30 PM, <mosquitto-dev-request@xxxxxxxxxxx> wrote:
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Today's Topics:

   1. Requesting for mosquitto version which supports   payload in
      HEX format (Surendra Manikandan)
   2. Re: Requesting for mosquitto version which supports payload
      in HEX format (Adrian Brown)
   3. Re: Requesting for mosquitto version which supports payload
      in HEX format (Nicholas Humfrey)
   4. Re: Requesting for mosquitto version which supports payload
      in HEX format (Brandon Arrendondo)


----------------------------------------------------------------------

Message: 1
Date: Wed, 22 Nov 2017 10:26:37 +0530
From: Surendra Manikandan <surendra.manikandan@xxxxxxxxx>
To: mosquitto-dev@xxxxxxxxxxx
Subject: [mosquitto-dev] Requesting for mosquitto version which
        supports        payload in HEX format
Message-ID:
        <CA+O1z9ALNZP_K82yorRpn_pwrzvgwCKG-Jrxurvf58W=pE_fbw@mail.gmail.com>
Content-Type: text/plain; charset="utf-8"

Hi Team,
I'm in need of formatting the payload in HEX format in the output of
'mosquitto_sub' command. Can I get the mosquitto version which supports
formatting payload message?

Thanks,
Surendra
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------------------------------

Message: 2
Date: Wed, 22 Nov 2017 05:06:30 +0000
From: Adrian Brown <adrianbro@xxxxxxxxx>
To: General development discussions for the mosquitto project
        <mosquitto-dev@xxxxxxxxxxx>
Subject: Re: [mosquitto-dev] Requesting for mosquitto version which
        supports payload in HEX format
Message-ID:
        <CAPzWwYommEnXvDhs24xBu-WP=4cJmOEtSYXrgVcnzL_CNXe_Fg@mail.gmail.com>
Content-Type: text/plain; charset="utf-8"

Hi not sure what your question really is but this might help MQTT is a
binary it?s payload agnostic so if want to send a payload contain
hexadecimal characters you can

This might help you if your asking how to take a revived payload and turn
it into hex and you don?t have coding experience node red might be a good
start

Cheers
Adrian
On Wed, 22 Nov 2017 at 3:57 pm, Surendra Manikandan <
surendra.manikandan@xxxxxxxxx> wrote:

> Hi Team,
> I'm in need of formatting the payload in HEX format in the output of
> 'mosquitto_sub' command. Can I get the mosquitto version which supports
> formatting payload message?
>
> Thanks,
> Surendra
> _______________________________________________
> mosquitto-dev mailing list
> mosquitto-dev@xxxxxxxxxxx
> To change your delivery options, retrieve your password, or unsubscribe
> from this list, visit
> https://dev.eclipse.org/mailman/listinfo/mosquitto-dev

--
Regards
Adrian Brown
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------------------------------

Message: 3
Date: Wed, 22 Nov 2017 09:35:20 +0000
From: Nicholas Humfrey <njh@xxxxxxxxxx>
To: General development discussions for the mosquitto project
        <mosquitto-dev@xxxxxxxxxxx>
Subject: Re: [mosquitto-dev] Requesting for mosquitto version which
        supports payload in HEX format
Message-ID: <eb85582261a771f97d2f5a7e86ae3499@xxxxxxxxxx>
Content-Type: text/plain; charset=UTF-8; format=flowed

Hello,

I agree with Adrian - it is not quite clear what you are trying to
achieve.
Do you mean a 'binary' (non-text) payload?
mosquitto_sub supports binary payloads, it is just that there is no way
of knowing when one message payload ends and the next begins - unless
you can be sure the messages don't contain newline characters.


Did I imagine that there was a version of mosquitto_sub that supports a
'-1' option to receive a single message and then exit? That may help
with a binary message payload.

I wonder if it would be useful to be able to pass an '--exec' command
line argument to mosquito_sub - which runs the specified command for
each message received - with the message written to STDIN.


nick.



On 2017-11-22 05:06, Adrian Brown wrote:
> Hi not sure what your question really is but this might help MQTT is a
> binary it?s payload agnostic so if want to send a payload contain
> hexadecimal characters you can
>
> This might help you if your asking how to take a revived payload and
> turn it into hex and you don?t have coding experience node red might
> be a good start
>
> Cheers
> Adrian
>
> On Wed, 22 Nov 2017 at 3:57 pm, Surendra Manikandan
> <surendra.manikandan@xxxxxxxxx> wrote:
>
>> Hi Team,
>> I'm in need of formatting the payload in HEX format in the output of
>> 'mosquitto_sub' command. Can I get the mosquitto version which
>> supports formatting payload message?
>>
>> Thanks,
>> Surendra
>> _______________________________________________
>> mosquitto-dev mailing list
>> mosquitto-dev@xxxxxxxxxxx
>> To change your delivery options, retrieve your password, or
>> unsubscribe from this list, visit
>> https://dev.eclipse.org/mailman/listinfo/mosquitto-dev
>
> --
>
> Regards
> Adrian Brown
> _______________________________________________
> mosquitto-dev mailing list
> mosquitto-dev@xxxxxxxxxxx
> To change your delivery options, retrieve your password, or
> unsubscribe from this list, visit
> https://dev.eclipse.org/mailman/listinfo/mosquitto-dev


------------------------------

Message: 4
Date: Wed, 22 Nov 2017 08:13:04 -0500
From: Brandon Arrendondo <barrendo@xxxxxxxxx>
To: General development discussions for the mosquitto project
        <mosquitto-dev@xxxxxxxxxxx>
Subject: Re: [mosquitto-dev] Requesting for mosquitto version which
        supports payload in HEX format
Message-ID:
        <CAMW8GMaDSznEzN_+86KNDfTe_j5uEJP0he4poT0XmpuOH-Kt4A@mail.gmail.com>
Content-Type: text/plain; charset="UTF-8"

I think you misunderstand Surendra's request.

The output of mosquitto_sub, when receiving a message, is what he
wants a flag to manipulate.  Instead of taking the binary payload and
trying to output in ASCII (resulting in many bad characters dumped to
the terminal), he wants a flag that will cause all payloads received
by mosquitto_sub to be printed in hex output.

It is not an unreasonable request - I have wanted this and have
written my own clients to do this same thing.

Regards,
Brandon

On Wed, Nov 22, 2017 at 4:35 AM, Nicholas Humfrey <njh@xxxxxxxxxx> wrote:
> Hello,
>
> I agree with Adrian - it is not quite clear what you are trying to achieve.
> Do you mean a 'binary' (non-text) payload?
> mosquitto_sub supports binary payloads, it is just that there is no way of
> knowing when one message payload ends and the next begins - unless you can
> be sure the messages don't contain newline characters.
>
>
> Did I imagine that there was a version of mosquitto_sub that supports a '-1'
> option to receive a single message and then exit? That may help with a
> binary message payload.
>
> I wonder if it would be useful to be able to pass an '--exec' command line
> argument to mosquito_sub - which runs the specified command for each message
> received - with the message written to STDIN.
>
>
> nick.
>
>
>
>
> On 2017-11-22 05:06, Adrian Brown wrote:
>>
>> Hi not sure what your question really is but this might help MQTT is a
>> binary it?s payload agnostic so if want to send a payload contain
>> hexadecimal characters you can
>>
>> This might help you if your asking how to take a revived payload and
>> turn it into hex and you don?t have coding experience node red might
>> be a good start
>>
>> Cheers
>> Adrian
>>
>> On Wed, 22 Nov 2017 at 3:57 pm, Surendra Manikandan
>> <surendra.manikandan@xxxxxxxxx> wrote:
>>
>>> Hi Team,
>>> I'm in need of formatting the payload in HEX format in the output of
>>> 'mosquitto_sub' command. Can I get the mosquitto version which
>>> supports formatting payload message?
>>>
>>> Thanks,
>>> Surendra
>>> _______________________________________________
>>> mosquitto-dev mailing list
>>> mosquitto-dev@xxxxxxxxxxx
>>> To change your delivery options, retrieve your password, or
>>> unsubscribe from this list, visit
>>> https://dev.eclipse.org/mailman/listinfo/mosquitto-dev
>>
>>
>> --
>>
>> Regards
>> Adrian Brown
>> _______________________________________________
>> mosquitto-dev mailing list
>> mosquitto-dev@xxxxxxxxxxx
>> To change your delivery options, retrieve your password, or
>> unsubscribe from this list, visit
>> https://dev.eclipse.org/mailman/listinfo/mosquitto-dev
>
> _______________________________________________
> mosquitto-dev mailing list
> mosquitto-dev@xxxxxxxxxxx
> To change your delivery options, retrieve your password, or unsubscribe from
> this list, visit
> https://dev.eclipse.org/mailman/listinfo/mosquitto-dev


------------------------------

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