bitcoin-scodec

Library for encoding Bitcoin network protocol in Scala using scodec.

How to use

Add the following to your build.sbt:

libraryDependencies += "io.github.yzernik" %% "bitcoin-scodec" % "0.3.0"

with the following resolver

resolvers += "yzernik repo" at "http://dl.bintray.com/yzernik/maven/"

Encode a Bitcoin message

create a message codec

scala> import io.github.yzernik.bitcoinscodec.structures.{Message, Network}

scala> val codec = Message.codec(Network.MainnetParams) // on the main network

encode a ping message

scala> import io.github.yzernik.bitcoinscodec.messages._

scala> val ping = Ping.generate
ping: io.github.yzernik.bitcoinscodec.messages.Ping = Ping(UInt64(0xd60c4f7719060e2e))

scala> codec.encode(ping)
res7: scodec.Attempt[scodec.bits.BitVector] = Successful(BitVector(256 bits, 0xf9beb4d970696e670000000000000000080000003c0a64b42e0e0619774f0cd6))

decode a pong message

scala> import scodec.bits._

scala> val bytes = hex"0xf9beb4d9706f6e670000000000000000080000003c0a64b42e0e0619774f0cd6"
bytes: scodec.bits.ByteVector = ByteVector(32 bytes, 0xf9beb4d9706f6e670000000000000000080000003c0a64b42e0e0619774f0cd6)

scala> codec.decode(bytes.toBitVector)
res1: scodec.Attempt[scodec.DecodeResult[io.github.yzernik.bitcoinscodec.structures.Message]] = Successful(DecodeResult(Pong(UInt64(0xd60c4f7719060e2e)),BitVector(empty)))