/// <summary>
/// Send message once the bloom filter is set
/// </summary>
/// <param name="payload">Message to send</param>
public void SendMessageAsync(Payload payload)
{
var node = AttachedNode;
if(node == null)
return;
if(FilterState == SPV.FilterState.Loaded)
node.SendMessageAsync(payload);
else
{
_OnFilterLoaded.Add(() => node.SendMessageAsync(payload));
}
}
public void ReadWrite(BitcoinStream stream)
{
if(Payload == null && stream.Serializing)
throw new InvalidOperationException("Payload not affected");
if(stream.Serializing || (!stream.Serializing && !_SkipMagic))
stream.ReadWrite(ref magic);
stream.ReadWrite(ref command);
int length = 0;
uint checksum = 0;
bool hasChecksum = false;
byte[] payloadBytes = stream.Serializing ? GetPayloadBytes(stream.ProtocolVersion, out length) : null;
length = payloadBytes == null ? 0 : length;
stream.ReadWrite(ref length);
if(stream.ProtocolVersion >= ProtocolVersion.MEMPOOL_GD_VERSION)
{
if(stream.Serializing)
checksum = Hashes.Hash256(payloadBytes, 0, length).GetLow32();
stream.ReadWrite(ref checksum);
hasChecksum = true;
}
if(stream.Serializing)
{
stream.ReadWrite(ref payloadBytes, 0, length);
}
else
{
if(length > 0x02000000) //MAX_SIZE 0x02000000 Serialize.h
{
throw new FormatException("Message payload too big ( > 0x02000000 bytes)");
}
payloadBytes = _Buffer == null || _Buffer.Length < length ? new byte[length] : _Buffer;
stream.ReadWrite(ref payloadBytes, 0, length);
if(hasChecksum)
{
if(!VerifyChecksum(checksum, payloadBytes, length))
{
if(NodeServerTrace.Trace.Switch.ShouldTrace(TraceEventType.Verbose))
NodeServerTrace.Trace.TraceEvent(TraceEventType.Verbose, 0, "Invalid message checksum bytes");
throw new FormatException("Message checksum invalid");
}
}
BitcoinStream payloadStream = new BitcoinStream(payloadBytes);
payloadStream.CopyParameters(stream);
var payloadType = PayloadAttribute.GetCommandType(Command);
var unknown = payloadType == typeof(UnknowPayload);
if(unknown)
NodeServerTrace.Trace.TraceEvent(TraceEventType.Warning, 0, "Unknown command received : " + Command);
object payload = _PayloadObject;
payloadStream.ReadWrite(payloadType, ref payload);
if(unknown)
((UnknowPayload)payload)._Command = Command;
Payload = (Payload)payload;
}
}
public void UpdatePayload(Payload payload, ProtocolVersion version)
{
if(payload == null)
throw new ArgumentNullException("payload");
this._PayloadObject = payload;
this.payload = payload.ToBytes(version);
length = (uint)this.payload.Length;
checksum = Hashes.Hash256(this.payload).GetLow32();
Command = payload.Command;
}
