Datagram sends do not spell

I am in need of help on the interface of datagram.

I am trying to send data in hexadecimal format, using the UDP protocol. The problem I have is that it seems to be sending the data in base 10, regardless of the entry in the byte stream.

Example 0 x 81 is being sent as 38 31. Any direction would be appreciated. Maybe I'm wrong road here but UDP is the Protocol that I need. This was easy in C++, but I'm banging my head against the wall with this one and JDE.

int HexOut0 = 0 x 0081;

_msg = Integer.toString (HexOut0, 16);
Byte [] bufOut = _msg.getBytes ();
Datagram outDatagram = _conn.newDatagram (bufOut, _msg.length ());
_conn. Send (outDatagram);

This is my final solution, I came up with that. I had to create a DataBuffer for byte data is properly formatted on the output of the UDP packet. I appears that using a string.getbytes () does something weird with the release. See wireshark capture below...

_conn = (UDPDatagramConnection) Connector.open ("datagram://192.168.1.2:47808"); ")

DataBuffer db = new DataBuffer();
DB. Write (0x81);
DB. Write (0x0B);
DB. Write (0x00);
DB. Write (0x0C);
DB. Write (0x01);
DB. Write (0x20);
DB. Write (0xFF);
DB. Write (0xFF);
DB. Write (0x00);
DB. Write (0xFF);
DB. Write (0x10);
DB. Write (0x08);
       
DB. Rewind();
           
Byte [] bufOut = db.toArray (); _msg. GetBytes();
Datagram outDatagram = _conn.newDatagram (bufOut, db.getLength ());
_conn. Send (outDatagram);

WireShark capture-1

That's what I had and now my BACNet controllers are happy and respond to their response I have h as expected.

Answer above:

Capture WireShark-2

Here's the catch using string.getbytes)

As you can see, they are totally different on the output. I had need of 0x81 out like 81... etc.

Hope this clarifies it a little more. In any case, we can mark this resolved.

Thanks for trying.

Tags: BlackBerry Developers

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