If I have a length-prefixed protocol, how can I us...

# ktor

[rrva]

If I have a length-prefixed protocol, how can I use bytepacketbuilder to first build a temp packet, then count the length and then really write it ?

[Aleksei Tirman [JB]]

You can get a size of written bytes from a BytePacketBuilder :

val builder = BytePacketBuilder().apply {
    writeByte(1)
    writeFloat(1.0f)
}

println(builder.size)

[rrva]

yes and then reset, write size and then write out the rest