import pkg/libp2p/varint
import pkg/dagger/blocktype
import pkg/questionable
import pkg/questionable/results
import ./helpers/nodeutils
import ./helpers/randomchunker
export randomchunker, nodeutils
proc lenPrefix*(msg: openArray[byte]): seq[byte] =
## Write `msg` with a varint-encoded length prefix
##
let vbytes = PB.toBytes(msg.len().uint64)
var buf = newSeqUninitialized[byte](msg.len() + vbytes.len)
buf[0..<vbytes.len] = vbytes.toOpenArray()
buf[vbytes.len..<buf.len] = msg
return buf