Buffer to JSON Obj Problem

General
1

I have a TCPIP node that outputs as follows;
image

If I use a function node to do msg.payload.toString() I get;
image

But if I then use a JSON node I get this;
image

Position 1444 in the buffer is this;
image

Ive tried all sorts and just cant find anything that works.

Any pointers would be appreciated.

Thx

2

From the looks of your msg.payload string there's a return character at the end of the string.
Try stripping that out in your function node before the JSON node.

3

it's the 00 at the end that may be the issue - but yes - either way - stripping it off with .substr is probably the easiest way to go.

4

Many thanks for the prompt responses.

var str = msg.payload.toString();
msg.payload = str.substr(0,1443);
return msg;

Works like a charm!

5

.....until payload length changes then it fails. Changed function to;

var str = msg.payload.toString();
msg.payload = str.replace(/\0/,"");
return msg;
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6

just fr completeness you can also use .slice - which will take negative numbers to count from the end so

msg.payload = msg.payload.toString().slice(0,-1);
return msg;
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