Solved: sigfox downlink

pjoly · ‎Dec 20, 2016

I am using Sigfox extension and it works fine for uplink.

I have read in documentation that downlink is not supported I don't really understand why :

I am using it simply outside Thingworx just by answering using a JSON message with the device ID and payload to send to sigfox when receiving a GET callback

(cgi-bin / python script)

exemple :{"FFFFF":{"downlinkData":"4142434441424344"}}

I am trying to use the "setDownlinkMessage" without success

I don't know what to put in "message" and "thingName" input, I tried many things but always (invalid payload in Sigfox logs)

Thanks for help

Pascal

pjoly · ‎Oct 26, 2017

solution given by support and working for me :

What is needed is to get results formatted as JSON. Two things are needed to make that happen:

The service invoked needs to have the return basetype set as JSON.
When you do the REST request (POST) to invoke the service you need to include the header: Accept: application/json. This can be included as a HTTP header or as an url parameter.

So, when you configure the downlink in Sigfox, you need to include this Accept=application/json in your url parameter.

Also, you may have to enable disable Filter Content-Type under PlatformSubsystem in TWX.

View solution in original post

pjoly · ‎Jan 10, 2017

In order to investigate, I have uploaded the extension into Eclipse java.

I cannot find any java code, just xml structures in the extension.

My question :

where can I find the code associated to the POST request send by SIGFOX in order to put the right json message in the answer ?

https://myserver/Thingworx/Things/Sigfox.CallbackInterface/Services/CallbackDataBatch?appKey=mykey&batch={batch}

Thanks

pjoly · ‎Mar 30, 2017

hello

nobody is using Sigfox with thingworx who could help me to fix this downlink issue or should I re-developp a new one ??

Is this extension developped by Sigfox or by Thingworx ?

Thanks

Do1 · ‎Jul 22, 2017

Have you perhaps found a solution yet?

pjoly · ‎Oct 24, 2017

hello

still no solution !!

it works fine using a python script but not from Thingworx when I'm trying to return the downlink message

Sigfox API is requesting a Json to be returned when the POST procedure is executed:

{

"device_id" : { "downlinkData" : "deadbeefcafebabe"}

}

the problem is that when using "result" in Thingworx API I cannot return this simple json

var downlink  = '{ "' + device + '" : { "downlinkData" : "' + "deadbeefcafebabe" + '" }}'
var result=  JSON.parse(downlink);

I tested with postman

my python script :

raw

{"F0A62":{"downlinkData":"4142434441424344"}}

Content-Type: text/html; charset=utf-8

<head>

</head>

<body>

OK

</body>

pretty

{

"F0A62": {

"downlinkData": "4142434441424344"

}

Thingworx return using result :

<HTML><HEAD><TITLE>ThingWorx: Thing com.thingworx.things.ConfiguredThing@4ab6f80c : Response From Execution Of CallbackData</TITLE><LINK rel='Stylesheet' href='/Thingworx/css/thingworxapi.css' type='text/css'></LINK><META http-equiv='Content-Type' content='text/html'></META><META http-equiv='cache-control' content='no-cache, no-store'></META><META http-equiv='expires' content='-1'></META><META http-equiv='pragma' content='no-cache, no-store'></META></HEAD><BODY><IMG SRC="/Thingworx/images/ThingworxLogo.png"/><BR/><H1>CallbackData</H1><TABLE><TR><TH>result</TH></TR><TR><TD>{"F0A62":{"downlinkData":"deadbeefcafebabe"}}</TD></TR></TABLE></BODY></HTML>

pretty

<HTML>

<HEAD>

<TITLE>ThingWorx: Thing com.thingworx.things.ConfiguredThing@4ab6f80c : Response From Execution Of CallbackData</TITLE>

</HEAD>

<BODY>

<BR/>

<H1>CallbackData</H1>

<TABLE>

<TR>

<TH>result</TH>

</TR>

<TR>

<TD>{"F0A62":{"downlinkData":"deadbeefcafebabe"}}</TD>

</TR>

</TABLE>

</BODY>

</HTML>

of course this is not well interpreted by Sigfox ....

pjoly · ‎Oct 26, 2017

solution given by support and working for me :

What is needed is to get results formatted as JSON. Two things are needed to make that happen:

The service invoked needs to have the return basetype set as JSON.
When you do the REST request (POST) to invoke the service you need to include the header: Accept: application/json. This can be included as a HTTP header or as an url parameter.

So, when you configure the downlink in Sigfox, you need to include this Accept=application/json in your url parameter.

Also, you may have to enable disable Filter Content-Type under PlatformSubsystem in TWX.