private async Task OnGetHeadersMessageReceivedAsync(GetBlocksPayload payload)
{
if (!localNode.ServiceEnabled) return;
if (Blockchain.Default == null) return;
UInt256 hash = payload.HashStart.Select(p => new
{
Hash = p,
Height = Blockchain.Default.GetBlockHeight(p)
}).Where(p => p.Height >= 0).OrderBy(p => p.Height).Select(p => p.Hash).FirstOrDefault();
if (hash == null || hash == payload.HashStop) return;
List<Block> headers = new List<Block>();
do
{
hash = Blockchain.Default.GetNextBlockHash(hash);
if (hash == null) break;
headers.Add(Blockchain.Default.GetHeader(hash));
} while (hash != payload.HashStop && headers.Count < 2000);
await SendMessageAsync("headers", HeadersPayload.Create(headers));
}
private async Task OnGetBlocksMessageReceivedAsync(GetBlocksPayload payload)
{
if (!localNode.ServiceEnabled) return;
if (Blockchain.Default == null) return;
UInt256 hash = payload.HashStart.Select(p => new
{
Hash = p,
Height = Blockchain.Default.GetBlockHeight(p)
}).Where(p => p.Height >= 0).OrderBy(p => p.Height).Select(p => p.Hash).FirstOrDefault();
if (hash == null || hash == payload.HashStop) return;
List<UInt256> hashes = new List<UInt256>();
do
{
hash = Blockchain.Default.GetNextBlockHash(hash);
if (hash == null) break;
hashes.Add(hash);
} while (hash != payload.HashStop && hashes.Count < 500);
await SendMessageAsync("inv", InvPayload.Create(InventoryType.MSG_BLOCK, hashes.ToArray()));
}