public void EnumerateEvents()
{
var array = new byte[22];
var spanToRead = array.AsSpan();
var payloadLength = 2;
BitConverter.TryWriteBytes(spanToRead.Slice(sizeof(ulong)), payloadLength);
BitConverter.TryWriteBytes(spanToRead.Slice(sizeof(ulong) + sizeof(int) + payloadLength), 100);
var consumption = 1 << 31 | 200;
BitConverter.TryWriteBytes(spanToRead.Slice(sizeof(ulong) + sizeof(int) + payloadLength
+ BlockEvent.SizeInBytes), consumption);
var iterator = PayloadReader.GetEvents(spanToRead);
Assert.Equal(new BlockAlias(100), iterator.Current.BlockAlias);
Assert.Equal(BlockEventType.Production, iterator.Current.Type);
iterator.MoveNext();
Assert.Equal(new BlockAlias(200), iterator.Current.BlockAlias);
Assert.Equal(BlockEventType.Consumption, iterator.Current.Type);
iterator.MoveNext();
Assert.False(iterator.EndNotReached);
}
private static void EnsureKeys(TimeParameters timeParameters)
{
var keysRequired = (int)(ulong)timeParameters.SlotsPerEpoch * 16;
if (_testKeys.Count == keysRequired)
{
return;
}
_testKeys.Clear();
_privateKeys.Clear();
_publicKeys.Clear();
// Private key is ~255 bits (32 bytes) long
for (var keyNumber = 0; keyNumber < keysRequired; keyNumber++)
{
var privateKeySpan = new Span <byte>(new byte[32]);
// Key is big endian number, so write Int32 to last 4 bytes.
BitConverter.TryWriteBytes(privateKeySpan.Slice(28), keyNumber + 1);
if (BitConverter.IsLittleEndian)
{
// And reverse if necessary
privateKeySpan.Slice(28).Reverse();
}
var privateKey = privateKeySpan.ToArray();
var blsParameters = new BLSParameters()
{
PrivateKey = privateKey
};
using var bls = BLS.Create(blsParameters);
var publicKeyBytes = new byte[BlsPublicKey.Length];
bls.TryExportBlsPublicKey(publicKeyBytes, out var bytesWritten);
var publicKey = new BlsPublicKey(publicKeyBytes);
_privateKeys.Add(privateKey);
_publicKeys.Add(publicKey);
_testKeys[publicKey] = privateKey;
}
}
/// <summary>
/// Serialize IPEndPoint to 24 byte array [4 bytes endpoint type, 16 bytes ip address, 4 bytes port]
/// </summary>
/// <param name="endPoint">Serialized endpoint</param>
/// <returns></returns>
public static byte[] Raw(this IPEndPoint endPoint)
{
var array = new byte[sizeof(uint) + sizeof(byte) * 16 + sizeof(ushort) + 2]; // 0 type, 4 ip, 20 port, padding 2 bytes
var bytes = new Span <byte>(array);
var type = TypeInvalid;
switch (endPoint.AddressFamily)
{
case AddressFamily.InterNetwork:
type = TypeIPv4;
break;
case AddressFamily.InterNetworkV6:
type = TypeIPv6;
break;
}
BitConverter.TryWriteBytes(bytes, (uint)type); // type
endPoint.Address.GetAddressBytes().AsSpan().CopyTo(bytes.Slice(4)); // address bytes
BitConverter.TryWriteBytes(bytes.Slice(20), (ushort)endPoint.Port); // port
return(array);
}
public ArraySegment <byte> Write()
{
ArraySegment <byte> segment = SendBufferHelper.Open(4096);
ushort count = 0;
bool success = true;
Span <byte> s = new Span <byte>(segment.Array, segment.Offset, segment.Count);
count += sizeof(ushort);
success &= BitConverter.TryWriteBytes(s.Slice(count, s.Length - count), (ushort)PacketID.C_Chat);
count += sizeof(ushort);
ushort chatLen = (ushort)Encoding.Unicode.GetBytes(this.chat, 0, this.chat.Length, segment.Array, segment.Offset + count + sizeof(ushort));
success &= BitConverter.TryWriteBytes(s.Slice(count, s.Length - count), chatLen);
count += sizeof(ushort);
count += chatLen;
success &= BitConverter.TryWriteBytes(s, count);
if (success == false)
{
return(null);
}
return(SendBufferHelper.Close(count));
}
public override ArraySegment <byte> Serialize()
{
ArraySegment <byte> arr = SendBufferHelper.Open(4096);
ushort count = 0;
bool success = true;
count += 2;
success &= BitConverter.TryWriteBytes(new Span <byte>(arr.Array, arr.Offset + count, arr.Count - count), packetId);
count += 2;
success &= BitConverter.TryWriteBytes(new Span <byte>(arr.Array, arr.Offset + count, arr.Count - count), playerId);
count += 8;
success &= BitConverter.TryWriteBytes(new Span <byte>(arr.Array, arr.Offset, arr.Count), count);
if (!success)
{
return(null);
}
return(SendBufferHelper.Close(count));
}
private static async Task FillPipeAsync(int iterations, PipeWriter writer)
{
const int minimumBufferSize = 4;
var random = new Random();
for (int i = 0; i < iterations; i++)
{
Memory <byte> memory = writer.GetMemory(minimumBufferSize);
var numberToWrite = random.Next(int.MaxValue / 2, int.MaxValue);
Console.WriteLine("Writing...");
BitConverter.TryWriteBytes(memory.Span, numberToWrite);
writer.Advance(minimumBufferSize);
// Make the data available to the PipeReader.
FlushResult result = await writer.FlushAsync();
if (result.IsCompleted)
{
break;
}
}
await writer.CompleteAsync();
}
public void WriteSector()
{
// Writing to the stream and verify that the written data is correct.
_sector.Write(_stream, _key);
var actual = _stream.ToArray();
var expected = new byte[SectorSize];
BitConverter.TryWriteBytes(new Span <byte>(expected, 0, sizeof(long)), _key);
for (int i = 0; i < _contentBytes.Length; i++)
{
expected[i + sizeof(long)] = _contentBytes[i];
}
var hashValue =
new MurmurHash3().ComputeHash(new Span <byte>(expected, 0, expected.Length - Hash128.SizeInBytes));
hashValue.WriteTo(new Span <byte>(expected).Slice(expected.Length - Hash128.SizeInBytes));
Console.WriteLine(BitConverter.ToString(expected));
Console.WriteLine(BitConverter.ToString(actual));
Assert.Equal(expected, actual);
}
private protected override Task <DeltaBackendSession> OnListenForInjectorConnection(CancellationToken ct = default)
{
if (created)
{
var tcs = new TaskCompletionSource <DeltaBackendSession>();
return(tcs.Task); // return a Task that never completes
}
var s = "Hello World!";
var enc = System.Text.Encoding.UTF8;
const int lenCount = 4;
var count = enc.GetByteCount(s);
var buf = new byte[lenCount + count];
BitConverter.TryWriteBytes(new Span <byte>(buf, 0, lenCount), System.Net.IPAddress.HostToNetworkOrder(count));
enc.GetBytes(s, new Span <byte>(buf, lenCount, buf.Length - lenCount));
_log.LogTrace("creating memory stream");
var t = Task.FromResult <DeltaBackendSession>(new SingleStreamDeltaBackendSession(new MemoryStream(buf), _log));
created = true;
return(t);
}
public int ToBytes(byte[] buffer)
{
buffer[0] = (byte)MessageType;
buffer[1] = (byte)Players.Count;
int index = 2;
foreach (var player in Players)
{
buffer[index] = (byte)player.PlayerId;
BitConverter.TryWriteBytes(new Span <byte>(buffer, index + 1, 4), player.Position.X);
BitConverter.TryWriteBytes(new Span <byte>(buffer, index + 5, 4), player.Position.Y);
BitConverter.TryWriteBytes(new Span <byte>(buffer, index + 9, 4), player.Velocity.X);
BitConverter.TryWriteBytes(new Span <byte>(buffer, index + 13, 4), player.Velocity.Y);
BitConverter.TryWriteBytes(new Span <byte>(buffer, index + 17, 4), player.LastSequence);
index += 21;
}
return((Players.Count * 21) + 2);
}
public override int GetHashCode()
{
if (_hashCode != 0)
{
return(_hashCode);
}
// For IPv6 addresses, we calculate the hashcode by using Marvin
// on a stack-allocated array containing the Address bytes and ScopeId.
int hashCode;
if (IsIPv6)
{
const int addressAndScopeIdLength = IPAddressParserStatics.IPv6AddressBytes + sizeof(uint);
Span <byte> addressAndScopeIdSpan = stackalloc byte[addressAndScopeIdLength];
MemoryMarshal.AsBytes(new ReadOnlySpan <ushort>(_numbers)).CopyTo(addressAndScopeIdSpan);
Span <byte> scopeIdSpan = addressAndScopeIdSpan.Slice(IPAddressParserStatics.IPv6AddressBytes);
bool scopeWritten = BitConverter.TryWriteBytes(scopeIdSpan, _addressOrScopeId);
Debug.Assert(scopeWritten);
hashCode = Marvin.ComputeHash32(
addressAndScopeIdSpan,
Marvin.DefaultSeed);
}
else
{
Span <uint> addressOrScopeIdSpan = stackalloc uint[1];
addressOrScopeIdSpan[0] = _addressOrScopeId;
// For IPv4 addresses, we use Marvin on the integer representation of the Address.
hashCode = Marvin.ComputeHash32(
MemoryMarshal.AsBytes(addressOrScopeIdSpan),
Marvin.DefaultSeed);
}
_hashCode = hashCode;
return(_hashCode);
}
public void TestRequestTypes()
{
BitConverter.TryWriteBytes(new Span <byte>(_bytes, ClientServerMessage.MessageTypeStart, sizeof(int)), (int)MessageType.OpenBlock);
Assert.Equal(MessageType.OpenBlock, ClientServerMessage.GetMessageType(_bytes));
BitConverter.TryWriteBytes(new Span <byte>(_bytes, ClientServerMessage.MessageTypeStart, sizeof(int)), (int)MessageType.CommitBlock);
Assert.Equal(MessageType.CommitBlock, ClientServerMessage.GetMessageType(_bytes));
BitConverter.TryWriteBytes(new Span <byte>(_bytes, ClientServerMessage.MessageTypeStart, sizeof(int)), (int)MessageType.Authenticate);
Assert.Equal(MessageType.Authenticate, ClientServerMessage.GetMessageType(_bytes));
BitConverter.TryWriteBytes(new Span <byte>(_bytes, ClientServerMessage.MessageTypeStart, sizeof(int)), (int)MessageType.GetBlockHandle);
Assert.Equal(MessageType.GetBlockHandle, ClientServerMessage.GetMessageType(_bytes));
BitConverter.TryWriteBytes(new Span <byte>(_bytes, ClientServerMessage.MessageTypeStart, sizeof(int)), (int)MessageType.IsAncestor);
Assert.Equal(MessageType.IsAncestor, ClientServerMessage.GetMessageType(_bytes));
BitConverter.TryWriteBytes(new Span <byte>(_bytes, ClientServerMessage.MessageTypeStart, sizeof(int)), (int)MessageType.IsPruneable);
Assert.Equal(MessageType.IsPruneable, ClientServerMessage.GetMessageType(_bytes));
Assert.Throws <ArgumentException>(() => ClientServerMessage.GetMessageType(new Span <byte>(_bytes, 0, ClientServerMessage.PayloadStart - 1)));
}
public async Task SendDataAsync(ReadOnlyMemory <byte> data, CancellationToken cancellationToken)
{
if (State == ConnectionState.Connected && IsStreamConnected)
{
_sendKeepAliveResetEvent?.Set();
try
{
using var memoryBufferOwner = MemoryPool <byte> .Shared.Rent(4);
if (!BitConverter.TryWriteBytes(memoryBufferOwner.Memory.Span, data.Length))
{
throw new InvalidOperationException();
}
if (_messageFramingEnabled)
{
await _sendingStream.WriteAsync(memoryBufferOwner.Memory.Slice(0, 4), cancellationToken).AsTask().ConfigureAwait(false);
}
await _sendingStream.WriteAsync(data, cancellationToken).AsTask().ConfigureAwait(false);
await _sendingStream.FlushAsync().ConfigureAwait(false);
//}
}
#if DEBUG
catch (Exception ex)
{
System.Diagnostics.Debug.WriteLine($"{GetType()}{Environment.NewLine}{ex}");
#else
catch (Exception)
{
#endif
SetState(ConnectionTrigger.LinkError);
}
}
}
private void FindExpectedHashWithVector()
{
using var mySHA256 = SHA256.Create();
Span <byte> maskBytes = stackalloc byte[32];
var hardLevel = (byte)25;
for (int j = 0; j < maskBytes.Length && hardLevel != 0; j++)
{
var delta = hardLevel > 8 ? (byte)8 : hardLevel;
maskBytes[j] |= (byte)((1 << delta) - 1);
hardLevel -= delta;
}
var maskVector = new Vector <byte>(maskBytes);
var buffer = new byte[4];
for (int i = 0; i < int.MaxValue; i++)
{
BitConverter.TryWriteBytes(buffer, i);
var hash = mySHA256.ComputeHash(buffer);
var hashVector = new Vector <byte>(hash);
if ((hashVector & maskVector) == Vector <byte> .Zero)
{
TextBox1.Text = i.ToString();
return;
}
}
TextBox1.Text = "I can't do it";
}
// 참고: unsafe를 이용하여 C++의 포인터 조작과 유사한 동작을 실행할 수 있다.
// 이는 추후 다룰 예정.
/*
* static unsafe void ToBytes(byte[] array, int offset, ulong value)
* {
* fixed (byte* ptr = &array[offset])
*(ulong*)ptr = value;
* }
*/
public override void OnConnected(EndPoint endPoint)
{
Console.WriteLine($"{endPoint}에 연결되었습니다.");
PlayerInfoReq packet = new PlayerInfoReq()
{
packetId = (ushort)PacketID.PlayerInfoReq,
playerId = 1001
};
for (int i = 0; i < 5; i++)
{
ArraySegment <byte> arr = SendBufferHelper.Open(4096);
// * 수정된 부분
// TryWriteBytes를 이용하여, GetByte로 변환 후 복사하는 과정을 한 번에 실행한다.
// success에 비트 연산을 통해 한 번이라도 실패했다면 false로 바뀌게 한다.
ushort count = 0;
bool success = true;
// 패킷 크기가 들어갈 부분은 2바이트 비워준다.
count += 2;
success &= BitConverter.TryWriteBytes(new Span <byte>(arr.Array, arr.Offset + count, arr.Count - count), packet.packetId);
count += 2;
success &= BitConverter.TryWriteBytes(new Span <byte>(arr.Array, arr.Offset + count, arr.Count - count), packet.playerId);
count += 8;
// 패킷의 크기는 미리 패킷에 정의해두지 않고, 보낼 때 크기를 센 다음 마지막에 count로 입력해준다.
success &= BitConverter.TryWriteBytes(new Span <byte>(arr.Array, arr.Offset, arr.Count), count);
ArraySegment <byte> sendBuff = SendBufferHelper.Close(count);
if (success)
{
Send(sendBuff);
}
}
}
public static (int nonce, string hash) FindExpectedHash(byte[] sourceData, int hardLevel, int checkFrom, int checkTo)
{
using var mySHA256 = SHA256.Create();
var buffer = new byte[sizeof(int) + sourceData.Length];
Array.Copy(sourceData, 0, buffer, sizeof(int), sourceData.Length);
for (int i = checkFrom; i < checkTo; i++)
{
BitConverter.TryWriteBytes(buffer, i);
var hash = mySHA256.ComputeHash(buffer);
if (CheckHash(hash, hardLevel))
{
var hashString = PrintByteArray(hash);
return(i, hashString);
}
}
return(0, string.Empty);
}
private async ValueTask WritePagePositionAllocationToc(int tocIndex, long position, long length)
{
if (_tocPage == null)
{
await InitIndexPageAsync(true);
}
CheckRange(tocIndex);
var offsetIndex = tocIndex * TocIndexSize;
BitConverter.TryWriteBytes(_tocPage.AsSpan(offsetIndex), position);
BitConverter.TryWriteBytes(_tocPage.AsSpan(offsetIndex + sizeof(int)), length);
if (tocIndex < 64)
{
await AzurePageBlob.WriteBytesAsync(new ReadOnlyMemory <byte>(_tocPage, 0, MyAzurePageBlobUtils.PageSize), 0);
}
else
{
await AzurePageBlob.WriteBytesAsync(new ReadOnlyMemory <byte>(_tocPage, MyAzurePageBlobUtils.PageSize, MyAzurePageBlobUtils.PageSize), 1);
}
}
public ArraySegment <byte> Write()
{
ushort count = 0;
bool success = true;
ArraySegment <byte> sg = SendBufferHelper.Open(4096);
Span <byte> span = new Span <byte>(sg.Array, sg.Offset, sg.Count); // span을 만든 이유는 어차피 spawn을 인자로 써야하기때문에
count += sizeof(ushort);
success &= BitConverter.TryWriteBytes(span.Slice(count, span.Length - count), (ushort)PacketID.C_Chat); // 시작범위부터 남은공간까지 오른쪽에 인자 값을 넣어라
count += sizeof(ushort);
ushort chatLen = (ushort)Encoding.Unicode.GetBytes(this.chat, 0, this.chat.Length, sg.Array, sg.Offset + count + sizeof(ushort));
success &= BitConverter.TryWriteBytes(span.Slice(count, span.Length - count), chatLen);
count += sizeof(ushort);
count += chatLen;
success &= BitConverter.TryWriteBytes(span, count);
if (success == false)
{
return(null);
}
return(SendBufferHelper.Close(count));
}
public static bool TryGetUInt24Bytes(uint value, Span <byte> buffer, bool littleEndian = false)
{
if (buffer.Length < 3)
{
return(false);
}
using (var owner = _memoryPool.Rent(4))
{
if (!BitConverter.TryWriteBytes(owner.Memory.Span, value))
{
return(false);
}
var valueSpan = owner.Memory.Span.Slice(0, 3);
if (!littleEndian)
{
valueSpan.Reverse();
}
valueSpan.CopyTo(buffer);
}
return(true);
}
public ArraySegment <byte> Write()
{
ArraySegment <byte> segment = SendBufferHelper.Open(4096);
ushort pos = 0;
bool success = true;
Span <byte> s = new Span <byte>(segment.Array, segment.Offset, segment.Count);
pos += sizeof(ushort);
success &= BitConverter.TryWriteBytes(s.Slice(pos, s.Length - pos), (ushort)PacketID.Test);
pos += sizeof(ushort);
success &= BitConverter.TryWriteBytes(s.Slice(pos, s.Length - pos), this.testint);
pos += sizeof(int);
success &= BitConverter.TryWriteBytes(s, pos);
if (success == false)
{
return(null);
}
return(SendBufferHelper.Close(pos));
}
/// <summary>
///
/// </summary>
/// <param name="value"></param>
/// <returns></returns>
unsafe public uint WriteString(string value)
{
if (string.IsNullOrEmpty(value))
{
var span2 = Advance(4);
BitConverter.TryWriteBytes(span2, 0);
return(4);
}
var l = Encoding.GetByteCount(value);
var span = Advance(4);
BitConverter.TryWriteBytes(span, l);
span = Advance(l);
fixed(char *cPtr = value)
{
fixed(byte *bPtr = &MemoryMarshal.GetReference(span))
{
var a = Encoding.GetBytes(cPtr, value.Length, bPtr, l);
}
}
return((uint)l + 4);
}
public DeviceClientScenario(PerfScenarioConfig config) : base(config)
{
_m.Id = _id;
_mRecv.Id = _id;
_mRecv.OperationType = TelemetryMetrics.DeviceOperationReceive;
_mMethod.Id = _id;
_mConnectionStatus.Id = _id;
_mConnectionStatus.ExecuteTime = null;
_mConnectionStatus.ScheduleTime = null;
_messageBytes = new byte[_sizeBytes];
_pooled = config.PoolSize > 0;
if (_pooled)
{
_poolSize = config.PoolSize;
}
BitConverter.TryWriteBytes(_messageBytes, _id);
}
public override Task WriteAsync(ArraySegment <byte> buffer, CancellationToken cancellationToken = new CancellationToken())
{
var buf = ArrayPool <byte> .Shared.Rent(buffer.Count + 20);
var ctext = new ArraySegment <byte>(buf, 20, buffer.Count);
var tag = new ArraySegment <byte>(buf, 4, 16);
BitConverter.TryWriteBytes(new ArraySegment <byte>(buf, 0, 4), buffer.Count);
lock (_writeNonce)
{
_aes.Encrypt(_writeNonce, buffer, ctext, tag);
IncrementNonce(_writeNonce);
}
async Task Send()
{
await WrappedSocket.WriteAsync(new ArraySegment <byte>(buf, 0, buffer.Count + 20), cancellationToken);
ArrayPool <byte> .Shared.Return(buf);
}
return(Send());
}
/// <summary>
/// Return from ``indices`` a random index sampled by effective balance.
/// </summary>
public ValidatorIndex ComputeProposerIndex(BeaconState state, IList <ValidatorIndex> indices, Hash32 seed)
{
if (!indices.Any())
{
throw new ArgumentException("Indices can not be empty", nameof(indices));
}
ulong indexCount = (ulong)indices.Count;
ValidatorIndex index = 0UL;
while (true)
{
ValidatorIndex initialValidatorIndex = (ValidatorIndex)(index % indexCount);
ValidatorIndex shuffledIndex = ComputeShuffledIndex(initialValidatorIndex, indexCount, seed);
ValidatorIndex candidateIndex = indices[(int)shuffledIndex];
Span <byte> randomInputBytes = new Span <byte>(new byte[40]);
seed.AsSpan().CopyTo(randomInputBytes);
BitConverter.TryWriteBytes(randomInputBytes.Slice(32), index / 32);
if (!BitConverter.IsLittleEndian)
{
randomInputBytes.Slice(32).Reverse();
}
Hash32 randomHash = _cryptographyService.Hash(randomInputBytes);
byte random = randomHash.AsSpan()[(int)(index % 32)];
Gwei effectiveBalance = state.Validators[(int)candidateIndex].EffectiveBalance;
if ((effectiveBalance * byte.MaxValue) >=
(_gweiValueOptions.CurrentValue.MaximumEffectiveBalance * random))
{
return(candidateIndex);
}
index++;
}
}
/// <summary>
/// Return a random outpoint and a random payload.
/// </summary>
private (Outpoint, Memory <byte>) MakeRandomRawTxo(int lowLimit, int upLimit)
{
var content = new byte[Outpoint.TotalSizeInBytes].AsMemory();
var temp = new byte[Outpoint.KeySizeInBytes - 4];
_rand.NextBytes(temp);
temp.CopyTo(content);
var index = _rand.Next(0, 20);
BitConverter.GetBytes(index).CopyTo(content.Slice(Outpoint.KeySizeInBytes - 4, 4));
var payloadLength = _rand.Next(lowLimit, upLimit);
BitConverter.GetBytes(payloadLength).CopyTo(content.Slice(Outpoint.KeySizeInBytes, 4));
var payload = new byte[payloadLength];
_rand.NextBytes(payload);
var numberOfEvents = _rand.Next(1, 5);
// write data length inside payload
BitConverter.TryWriteBytes(payload.AsSpan(sizeof(ulong), sizeof(int)),
payloadLength - sizeof(ulong) - sizeof(int) - BlockEvent.SizeInBytes * numberOfEvents);
var writer = new PayloadWriter(payload.AsSpan(payloadLength - BlockEvent.SizeInBytes * numberOfEvents));
for (var i = 0; i < numberOfEvents; ++i)
{
var ev = new BlockEvent((uint)_rand.Next(0, 1_000_000));
writer.Write(ev);
}
return(Outpoint.Create(content.Span), payload);
}
public ArraySegment <byte> Serialize()
{
ArraySegment <byte> arr = SendBufferHelper.Open(4096);
Span <byte> span = new Span <byte>(arr.Array, arr.Offset, arr.Count);
ushort count = 0;
bool success = true;
count += sizeof(ushort);
success &= BitConverter.TryWriteBytes(span.Slice(count, span.Length - count), (ushort)PacketID.C_PlayerInfoReq);
count += sizeof(ushort);
arr.Array[arr.Offset + count] = (byte)this.testByte;
count += sizeof(byte);
success &= BitConverter.TryWriteBytes(span.Slice(count, span.Length - count), playerId);
count += sizeof(long);
ushort playerNameLen = (ushort)Encoding.Unicode.GetBytes(playerName, 0, playerName.Length, arr.Array, arr.Offset + count + sizeof(ushort));
success &= BitConverter.TryWriteBytes(span.Slice(count, span.Length - count), playerNameLen);
count += sizeof(ushort);
count += playerNameLen;
success &= BitConverter.TryWriteBytes(span.Slice(count, span.Length - count), (ushort)skills.Count);
count += sizeof(ushort);
foreach (Skill skill in skills)
{
success &= skill.Serialize(span, ref count);
}
success &= BitConverter.TryWriteBytes(span, count);
if (!success)
{
return(null);
}
return(SendBufferHelper.Close(count));
}
static async Task Main(string[] args)
{
UdpClient client1 = new UdpClient(9999);
UdpClient client2 = new UdpClient(1000);
Socket client1Socket = client1.Client;
Socket client2Socket = client2.Client;
List <Socket> readSockets = new List <Socket>();
while (true)
{
readSockets.Clear();
readSockets.Add(client1Socket);
readSockets.Add(client2Socket);
client1Socket.Poll(50, SelectMode.SelectRead);
Socket.Select(readSockets, null, null, 1000);
}
byte[] data = new byte[20];
{
BitConverter.TryWriteBytes(data.AsSpan(), 42);
BitConverter.TryWriteBytes(data.AsSpan().Slice(4), 56);
BitConverter.TryWriteBytes(data.AsSpan().Slice(8), 94);
BitConverter.TryWriteBytes(data.AsSpan().Slice(12), 78);
BitConverter.TryWriteBytes(data.AsSpan().Slice(16), 0);
}
MemoryStream memStream = new MemoryStream(data);
int[] arr = new int[42];
await arr[1..5].ToAsyncEnumerable().SelectAwait(async x =>
public bool Wrtie(Span <byte> s, ref ushort pos)
{
bool success = true;
success &= BitConverter.TryWriteBytes(s.Slice(pos, s.Length - pos), this.id);
pos += sizeof(int);
success &= BitConverter.TryWriteBytes(s.Slice(pos, s.Length - pos), this.level);
pos += sizeof(short);
success &= BitConverter.TryWriteBytes(s.Slice(pos, s.Length - pos), this.duration);
pos += sizeof(float);
success &= BitConverter.TryWriteBytes(s.Slice(pos, s.Length - pos), (ushort)this.attributes.Count);
pos += sizeof(ushort);
foreach (Attribute attribute in this.attributes)
{
success &= attribute.Wrtie(s, ref pos);
}
return(success);
}
public ArraySegment <byte> Serialize()
{
ArraySegment <byte> arr = SendBufferHelper.Open(4096);
Span <byte> span = new Span <byte>(arr.Array, arr.Offset, arr.Count);
ushort count = 0;
bool success = true;
count += sizeof(ushort);
success &= BitConverter.TryWriteBytes(span.Slice(count, span.Length - count), (ushort)PacketID.S_Test);
count += sizeof(ushort);
success &= BitConverter.TryWriteBytes(span.Slice(count, span.Length - count), testInt);
count += sizeof(int);
success &= BitConverter.TryWriteBytes(span, count);
if (!success)
{
return(null);
}
return(SendBufferHelper.Close(count));
}
/// <summary>
/// 注意要和SystemLib中的String的对象格式相同
/// </summary>
/// <param name="value"></param>
/// <returns>绝对地址</returns>
public uint AddConstantString(string value)
{
if (!StringPool.TryGetValue(value, out HeapData data))
{
// 分配byte数组
HeapData stringData = MallocCharArray(Encoding.UTF8.GetByteCount(value));
Encoding.UTF8.GetBytes(value, new Span <byte>(stringData.Data, HeapData.ArrayLengthSize + HeapData.MiscDataSize,
stringData.Data.Length - HeapData.ArrayLengthSize - HeapData.MiscDataSize));
// String对象
byte[] vs = new byte[HeapData.MiscDataSize + HeapData.StringLengthSize + HeapData.StringDataSize];
// 头部信息可以不填，因为MethodArea是内存的边界，GC不会继续walk
// 长度信息
BitConverter.TryWriteBytes(new Span <byte>(vs, HeapData.MiscDataSize, HeapData.StringLengthSize), value.Length);
// Data信息
BitConverter.TryWriteBytes(new Span <byte>(vs, HeapData.MiscDataSize + HeapData.StringLengthSize, HeapData.StringDataSize),
MemoryMap.MapToAbsolute(stringData.Offset, MemoryTag.METHOD));
// 字符串
data = Malloc(vs);
StringPool.Add(value, data);
}
return(MemoryMap.MapToAbsolute(data.Offset, MemoryTag.METHOD));
}
private static async Task FillPipeAsync(PipeWriter writer)
{
// result file format:
// | flag (1byte) | data (8 bytes) |
// flag: none = 0x00, fizz = 0x01, buzz = 0x02, fizzbuzz = 0x03
const int blockSize = 9;
var block = new byte[blockSize];
void WriteFizzBuzz(ulong x)
{
block[0] = (byte)x.GetFizzBuzz();
if (!BitConverter.TryWriteBytes(block.AsSpan(1), x))
{
throw new Exception();
}
block.CopyTo(writer.GetSpan(blockSize));
writer.Advance(blockSize);
}
for (ulong i = 0; i < ulong.MaxValue; i++)
{
WriteFizzBuzz(i);
if (i % 128 == 0)
{
await writer.FlushAsync();
}
if (i % 1000000 == 0)
{
Console.WriteLine(i);
}
}
await writer.FlushAsync();
writer.Complete();
}
