public static void EncodeVersionPayload(BinaryWriter writer, VersionPayload versionPayload, bool withRelay)
{
writer.WriteUInt32(versionPayload.ProtocolVersion);
writer.WriteUInt64(versionPayload.ServicesBitfield);
writer.WriteUInt64((ulong)versionPayload.Time.ToUnixTimeSeconds());
EncodeNetworkAddress(writer, versionPayload.RemoteAddress);
EncodeNetworkAddress(writer, versionPayload.LocalAddress);
writer.WriteUInt64(versionPayload.Nonce);
writer.WriteVarString(versionPayload.UserAgent);
writer.WriteUInt32(versionPayload.StartBlockHeight);
if (withRelay)
writer.WriteBool(versionPayload.Relay);
}
public static byte[] EncodeVersionPayload(VersionPayload versionPayload, bool withRelay)
{
using (var stream = new MemoryStream())
using (var writer = new BinaryWriter(stream))
{
EncodeVersionPayload(writer, versionPayload, withRelay);
return stream.ToArray();
}
}
public static VersionPayload DecodeVersionPayload(BinaryReader reader, int payloadLength)
{
var position = reader.BaseStream.Position;
var versionPayload = new VersionPayload
(
ProtocolVersion: reader.ReadUInt32(),
ServicesBitfield: reader.ReadUInt64(),
Time: DateTimeOffset.FromUnixTimeSeconds((long)reader.ReadUInt64()),
RemoteAddress: DecodeNetworkAddress(reader),
LocalAddress: DecodeNetworkAddress(reader),
Nonce: reader.ReadUInt64(),
UserAgent: reader.ReadVarString(),
StartBlockHeight: reader.ReadUInt32(),
Relay: false
);
var readCount = reader.BaseStream.Position - position;
if (versionPayload.ProtocolVersion >= VersionPayload.RELAY_VERSION && payloadLength - readCount == 1)
versionPayload = versionPayload.With(Relay: reader.ReadBool());
return versionPayload;
}
