public async Task <Response <Block> > SubmitMinedBlock(MinedBlock block, string minerAddress)
{
var requestMessage = BuildRequestMessage(HttpMethod.Post, $"api/mining/submit-mined-block/{minerAddress}");
requestMessage.Content = SerializeRequestAsJson(block);
return(await SendRequest <Block>(requestMessage).ConfigureAwait(false));
}
public async Task SubmitJob(JobDTO job)
{
var minedBlock = new MinedBlock
{
BlockDataHash = job.BlockDataHash,
BlockHash = job.BlockHash,
DateCreated = job.DateCreated,
Nonce = job.Nonce
};
var payload = new ByteArrayContent(Encoding.UTF8.GetBytes(JsonConvert.SerializeObject(minedBlock)));
payload.Headers.ContentType = new MediaTypeHeaderValue("application/json");
foreach (var nodeUrl in this.nodeUrls)
{
var fullUrl = $"{nodeUrl}/api/node/mining/submit-mined-block";
var response = await this.http.PostAsync(fullUrl, payload);
if (response.IsSuccessStatusCode)
{
this.timer.Interval = TimerInterval;
this.OnTimerElapsed(null, null);
break;
}
}
}
private static async Task <bool> SubmitMinedBlock(
INodeClient nodeClient,
string minerAddress,
int maxRetries,
string blockDataHash,
DateTime dateCreated,
ulong nonce,
string computedHash)
{
MinedBlock block = new MinedBlock
{
BlockDataHash = blockDataHash,
DateCreated = dateCreated.Iso8601Formatted(),
Nonce = nonce.ToString(),
BlockHash = computedHash
};
Response <Block> response;
int retries = 0;
do
{
retries++;
response = await nodeClient.SubmitMinedBlock(block, minerAddress).ConfigureAwait(false);
} while (response.Status == Status.Failed && retries < maxRetries);
return(response.Status == Status.Success);
}
private static void UpdateCandidateBlockData(
Block candidateBlock,
MinedBlock miningResult)
{
candidateBlock.MinerProvidedHash = miningResult.BlockHash;
candidateBlock.DateCreated = miningResult.DateCreated;
candidateBlock.Nonce = miningResult.Nonce;
}
public BlockValidationResult TryAddBlock(MinedBlock minedBlock, out Block candidateBlock)
{
bool found = _miningJobs.TryGetValue(minedBlock.BlockDataHash, out candidateBlock);
if (!found)
{
return(BlockValidationResult.BlockNotFound);
}
string difficultyCheck = new string('0', _nodeSettings.CurrentDifficulty);
if (!minedBlock.BlockHash.StartsWith(difficultyCheck))
{
return(BlockValidationResult.BlockHashDifficultyMismatch);
}
string blockHashCheck = HashUtils.ComputeBlockSha256Hash(
minedBlock.BlockDataHash,
minedBlock.DateCreated,
minedBlock.Nonce);
if (blockHashCheck != minedBlock.BlockHash)
{
return(BlockValidationResult.InvalidBlockHash);
}
if (candidateBlock.Index != _chain.Count)
{
return(BlockValidationResult.BlockAlreadyMined);
}
// block found, will be added in chain
_chain.Add(candidateBlock);
_miningJobs.Clear();
UpdateCandidateBlockData(candidateBlock, minedBlock);
MoveBlockTransactionsToConfirmed(candidateBlock);
_peerSynchronizationService.BroadcastNewBlockNotification(
_chain.Count,
GetCumulativeDifficulty(),
_nodeSettings.NodeUrl);
return(BlockValidationResult.Ok);
}
