public HttpResponseMessage Save([FromBody] Block block)
{
try
{
var resultCode = HttpStatusCode.Forbidden;
if (block == null)
{
Request.CreateErrorResponse(resultCode, "Could not read data from body");
}
var isValidTransaction = block != null && KeyServices.VerifySignature(block.ReceiptPositions, block.PublicKey, block.Signature);
if (isValidTransaction)
{
//TODO: перенести логику проверки хеша в BLL
if (StringUtil.IsBlockValid(block))
{
_blockRepository.AddBlock(block);
resultCode = HttpStatusCode.OK;
}
}
var response = new HttpResponseMessage
{
StatusCode = resultCode,
Content = new StringContent(JsonConvert.SerializeObject(block), Encoding.UTF8,
"application/json")
};
return(response);
}
catch (Exception ex)
{
var response = new HttpResponseMessage
{
StatusCode = HttpStatusCode.Forbidden,
Content = new StringContent(ex.Message, Encoding.UTF8, "application/json")
};
return(response);
}
}
private async void ProccessRequest(HttpListenerContext httpListenerContext)
{
WebSocketContext webSocketContext = null;
string ipAddress;
try
{
webSocketContext = await httpListenerContext.AcceptWebSocketAsync(subProtocol : null);
ipAddress = httpListenerContext.Request.RemoteEndPoint.ToString();
}
catch (Exception)
{
httpListenerContext.Response.StatusCode = 500;
httpListenerContext.Response.Close();
return;
}
WebSocket webSocket = webSocketContext.WebSocket;
try
{
byte[] receiveBuffer = new byte[256];
ChainSerializer chainSerializer = new ChainSerializer();
IEnumerable <Block> blocks;
BlockRepository subscriber = new BlockRepository();
ArraySegment <byte> segment = new ArraySegment <byte>(receiveBuffer);
byte[] block = new byte[256];
while (true)
{
using (MemoryStream stream = new MemoryStream())
{
WebSocketReceiveResult receiveResult = await webSocket.ReceiveAsync(
segment, CancellationToken.None);
if (receiveResult.MessageType == WebSocketMessageType.Close)
{
await webSocket.CloseAsync(WebSocketCloseStatus.NormalClosure, "", CancellationToken.None);
}
else
{
await stream.WriteAsync(segment.Array, segment.Offset, segment.Count);
stream.Seek(0, SeekOrigin.Begin);
do
{
using (BinaryReader reader = new BinaryReader(stream))
{
block = reader.ReadBytes((int)stream.Length);
}
} while (!receiveResult.EndOfMessage);
blocks = chainSerializer.Decode(block);
if (blocks.Count() > 0)
{
var block_list = blocks.ToList();
var localBlocks = subscriber.GetBlocks();
if (localBlocks.Any(b => b.Hash == block_list[0].Hash))
{
return;
}
else
{
subscriber.AddBlock(block_list[0]);
}
}
}
}
}
}
catch (Exception ex)
{
log.Error("Error when adding block, reason: " + ex.Message);
httpListenerContext.Response.StatusCode = 500;
// httpListenerContext.Response.Close();
return;
}
finally
{
if (webSocket != null)
{
webSocket.Dispose();
}
}
}