J8583 How set TPDU as Binary

Question

I am using j8583 Library, and I need prepend a TPDU (10 digits in binary BCD Packed) to the message.

It´s possible ?

The header of J8583 messages only use String in ASCII.

Answer 1

Unfortunately I had the same issue but i found a solution. Simply you need to "pack" your message and calculate the TPDU in other variable byte[]. I assume your TDPU consist in:

<2 bytes length of the messages><1 byte: 60><2 bytes origin><2 bytes destiny>

If you have packed your message in a byte[] and your TPDU in other byte[] simply create a new byte[] and concatenate with System.arraycopy. I assume you know how to implement this.

Regards