NetBurner Community Forum

The number in PrintObjectTobuffer is the MAX size that it is allowed to use.
So we start with:
char packJSON[1000];
you then do memset..
memset(packJSON,'\n',sizeof(packJSON));
you fill the 1000 bytes with \n....

what will strlen(packJSON) return?
strlen starts at the beginning of packJSON and ...

I have to admit I am at a loss why this works, but it does.

JsonOutObject.PrintObjectToBuffer(packJSON, sizeof(packJSON));
fdprintf(ws_fd, "%s",packJSON);

Yet this does not.

JsonOutObject.PrintObjectToBuffer(packJSON, strlen(packJSON));
fdprintf(ws_fd, "%s\n\n",packJSON);


Thank you for all ...

FWIW, I just tested this.

JsonOutObject.PrintObjectToBuffer(packJSON, sizeof(packJSON));
printf("Size[%u][%u]\r\n", strlen(packJSON), sizeof(packJSON) );

This is what it printed, am i missing something ? aren't I packing more using sizeof?
Size[412][1000]

JsonOutObject.PrintObjectToBuffer(packJSON, strlen(packJSON)); <-----Potential problem

JsonOutObject.PrintObjectToBuffer(packJSON, sizeof(packJSON));

writestring(ws_fd, packJSON);


Curious, after JsonOutObject.DoneBuilding(); Wouldent sizeof pack the whole size of packJSON?
Shouldn't I really ...

I got it the Json parsing now, thank you for your help Paul!

I seem to be getting close to your answers, thank you. I finally took a look at the example
C:\nburn\examples\StandardStack\WebClient\EarthQuake.

char rx_buffer[ETHER_BUFFER_SIZE + 1];

I did try that yesterday,


JsonOutObject.PrintObjectToFd( ws_fd);
write(ws_fd,"\n\n",2);


But since its not all send as one string it did not work.
I wound up doing this and it worked.


memset(packJSON,'\n',sizeof(packJSON));
JsonOutObject.PrintObjectToBuffer(packJSON, strlen(packJSON ...

Thank you for the help! Tried a few ways but keep getting Trap errors.
This is what I have thus far.



if (FD_ISSET(ws_fd, &read_fds))
{
int len = read( ws_fd, rx_buffer, ETHER_BUFFER_SIZE );

printf("RX[%d]:%s\r\n",len,rx_buffer);

ParsedJsonDataSet pjs(rx_buffer,len);
iprintf("%s\r\n",pjs ...

just printf a \n\n?

But that wont put it into the JsonOutObject.

Looking at the examples Json, I am still confused...

I am using websockets on port 22000. When the browser sends me a json formatted string I get the data just fine.
Now I would like to parse and pull that data out. How do i put my received data into a JsonInObject so i can then use JsonInObject ...