how to add custom header?

[mrguamos]

I need to append some value after the length prefix, is this possible?
In java j8583 library there is something like this
IsoMessage#setIsoHeader

[mrguamos]

nvm, i just prepend it with the raw message

[alovak]

@mrguamos please check the link below to see how you can use custom message writer here - so you can write anything you need before writing the message

moov-io/iso8583-connection#44