public void BinarySendTask( )
{
byte sequence = 0;
while (IsRunning)
{
if (SendQueue.TryDequeue(out SendDatagram datagram))
{
byte [] data = datagram.ToBinary( );
UnderlyingStream.WriteByte(DatagramHeader);
UnderlyingStream.WriteByte(sequence);
UnderlyingStream.WriteByte(( byte )datagram.Type.BinaryType);
UnderlyingStream.WriteByte(data.CaluCrc8( ));
UnderlyingStream.WriteByte(Convert.ToByte(data.Length));
UnderlyingStream.Write(data, 0, data.Length);
sequence++;
}
else
{
Thread.Sleep(20);
}
}
}
/// <summary>
/// Writes a fixed-length ASCII-encoded string value to the underlying stream. To fit (size), the string content is either truncated or padded with null characters.
/// </summary>
public void WriteAsciiFixed(string value, int size)
{
if (value == null)
{
Console.WriteLine("Network: Attempted to WriteAsciiFixed() with null value");
value = string.Empty;
}
int length = value.Length;
UnderlyingStream.SetLength(UnderlyingStream.Length + size);
if (length >= size)
{
UnderlyingStream.Position += Encoding.ASCII.GetBytes(value, 0, size, UnderlyingStream.GetBuffer(), (int)UnderlyingStream.Position);
}
else
{
Encoding.ASCII.GetBytes(value, 0, length, UnderlyingStream.GetBuffer(), (int)UnderlyingStream.Position);
UnderlyingStream.Position += size;
}
/*byte[] buffer = Encoding.ASCII.GetBytes( value );
*
* if ( buffer.Length >= size )
* {
* m_Stream.Write( buffer, 0, size );
* }
* else
* {
* m_Stream.Write( buffer, 0, buffer.Length );
* Fill( size - buffer.Length );
* }*/
}
/*public*/ bool TryAndFind(BlobChunkHeader signature, long findStartPosition = TypeExtensions.kNone)
{
Contract.Requires <ArgumentOutOfRangeException>(findStartPosition.IsNone() ||
findStartPosition < AssumedBlobSize);
Util.MarkUnusedVariable(ref signature);
bool blob_found = false;
long orig_pos = TypeExtensions.kNone;
if (findStartPosition.IsNotNone())
{
orig_pos = UnderlyingStream.BaseStream.Position;
UnderlyingStream.Seek(findStartPosition + StartPosition, System.IO.SeekOrigin.Begin);
}
// #TODO_IMPLEMENT
Contract.Assert(false, "TODO");
if (orig_pos.IsNotNone())
{
UnderlyingStream.Seek(orig_pos, System.IO.SeekOrigin.Begin);
}
return(blob_found);
}
/// <summary>
/// Writes a 2-byte unsigned integer value to the underlying stream.
/// </summary>
public void Write(ushort value)
{
m_Buffer[0] = (byte)(value >> 8);
m_Buffer[1] = (byte)value;
UnderlyingStream.Write(m_Buffer, 0, 2);
}
BlobChunkVerificationResultInfo VerifyEof(bool streamFirst = true,
BlobTransportStreamAuthentication expectedAuthentication = BlobTransportStreamAuthentication.None)
{
var result = streamFirst ? VerifyEnoughBytesForChunkOrData(kFooterSize) : BlobChunkVerificationResultInfo.ValidResult;
if (result.IsValid)
{
if (streamFirst)
{
mFooterPosition = BaseStream.Position;
UnderlyingStream.Stream(ref mHeader);
}
long blob_size = AssumedBlobSize;
result = mFooter.Verify(expectedAuthentication, blob_size);
if (streamFirst && result.IsValid)
{
mFooter.SerializeAuthenticationData(UnderlyingStream);
}
}
if (result.IsInvalid)
{
result.Context = BlobChunkVerificationResultContext.Footer;
}
return(result);
}
public BulletinBoardSendPostSummaryPacket(BulletinBoard Board, BulletinBoardPost Post)
: base(0x71)
{
// Set the maximum size
EnsureCapacity(1024);
// Fill the packet data
UnderlyingStream.Write((byte)BulletinPacket.PacketSubType.SendPostSummary);
int BoardSerial = Board.Serial;
if ((Post.RootParent != null) && (Post.RootParent is BulletinBoard))
{
BoardSerial = (((Item)(Post.RootParent)).Serial);
}
UnderlyingStream.Write((int)BoardSerial); // Bulletin Board Serial
UnderlyingStream.Write((int)Post.Serial); // Post Serial
int ParentSerial = Board.Serial;
if ((Post.Parent != null) && ((Post.Parent is BulletinBoard) || (Post.Parent is BulletinBoardPost)))
{
ParentSerial = (((Item)(Post.Parent)).Serial);
}
UnderlyingStream.Write((int)(ParentSerial == BoardSerial ? 0 : ParentSerial)); // Parent Serial (if it is a reply)
UnderlyingStream.Write((byte)(Post.Author.Length + 1));
UnderlyingStream.WriteAsciiNull(Post.Author);
UnderlyingStream.Write((byte)(Post.Subject.Length + 1));
UnderlyingStream.WriteAsciiNull(Post.Subject);
UnderlyingStream.Write((byte)(Post.Date.Length + 1));
UnderlyingStream.WriteAsciiNull(Post.Date);
// Log the raw packet info
BulletinPacket.LogPacket("BulletinBoardSendPostSummaryPacket", UnderlyingStream.ToArray());
}
BlobChunkVerificationResultInfo VerifyStart(bool streamFirst = true)
{
var result = streamFirst ? VerifyEnoughBytesForChunkOrData(kHeaderSize) : BlobChunkVerificationResultInfo.ValidResult;
if (result.IsValid)
{
if (streamFirst)
{
UnderlyingStream.Stream(ref mHeader);
}
bool requires_byteswap;
result = mHeader.Verify(out requires_byteswap);
if (result.IsValid && requires_byteswap)
{
UnderlyingStream.ChangeByteOrder(UnderlyingStream.ByteOrder.Invert());
}
}
if (result.IsInvalid)
{
result.Context = BlobChunkVerificationResultContext.Header;
}
return(result);
}
public void Dispose()
{
if (UnderlyingStream != null)
{
UnderlyingStream.Dispose();
UnderlyingStream = null;
}
}
/// <summary>
/// Writes a 4-byte unsigned integer value to the underlying stream.
/// </summary>
public void Write(uint value)
{
m_Buffer[0] = (byte)(value >> 24);
m_Buffer[1] = (byte)(value >> 16);
m_Buffer[2] = (byte)(value >> 8);
m_Buffer[3] = (byte)value;
UnderlyingStream.Write(m_Buffer, 0, 4);
}
///<inheritdoc />
public override Task WriteAsync(byte[] buffer, int offset, int count, CancellationToken cancellationToken)
{
ThrowIfDisposed();
if (_memoryStatus == MemoryFlag.AutoOverFlowToDisk && _isInMemory && count + UnderlyingStream.Position > _threshholdSize)
{
OverflowToPersistentStream();
}
return(UnderlyingStream.WriteAsync(buffer, offset, count, cancellationToken));
}
///<inheritdoc />
public override IAsyncResult BeginWrite(byte[] buffer, int offset, int count, AsyncCallback callback, object state)
{
ThrowIfDisposed();
if (_memoryStatus == MemoryFlag.AutoOverFlowToDisk && _isInMemory && count + UnderlyingStream.Position > _threshholdSize)
{
OverflowToPersistentStream();
}
return(UnderlyingStream.BeginWrite(buffer, offset, count, callback, state));
}
///<inheritdoc />
public override void Write(byte[] buffer, int offset, int count)
{
ThrowIfDisposed();
if (_memoryStatus == MemoryFlag.AutoOverFlowToDisk && _isInMemory && count + UnderlyingStream.Position > _threshholdSize)
{
OverflowToPersistentStream();
}
UnderlyingStream.Write(buffer, offset, count);
}
public override void Write(byte[] buffer, int offset, int count)
{
if (Position >= Length || Length - Position < count)
{
throw new IOException("Attempt to write beyond the slice");
}
UnderlyingStream.Position = Position + Start;
UnderlyingStream.Write(buffer, offset, count);
}
private void OverflowToPersistentStream()
{
Stream persistentStream = CreatePersistentStream(_forAsync);
persistentStream.SetLength(UnderlyingStream.Length);
UnderlyingStream.Position = 0;
UnderlyingStream.CopyTo(persistentStream);
UnderlyingStream = persistentStream;
_isInMemory = false;
}
protected virtual void Dispose(bool disposing)
{
if (disposing)
{
if (UnderlyingStream != null)
{
UnderlyingStream.Dispose();
UnderlyingStream = null;
}
}
}
protected void TryDisposeUnderlyingStream()
{
try
{
UnderlyingStream?.Dispose();
}
catch (Exception)
{
// Well, at least we tried
}
}
///<inheritdoc />
public override void SetLength(long length)
{
ThrowIfDisposed();
if (_memoryStatus == MemoryFlag.AutoOverFlowToDisk && _isInMemory && length > _threshholdSize)
{
OverflowToPersistentStream();
}
UnderlyingStream.SetLength(length);
}
/// <summary>
/// Writes a number of 0x00 byte values to the underlying stream.
/// </summary>
public void Fill(int length)
{
if (UnderlyingStream.Position == UnderlyingStream.Length)
{
UnderlyingStream.SetLength(UnderlyingStream.Length + length);
UnderlyingStream.Seek(0, SeekOrigin.End);
}
else
{
UnderlyingStream.Write(new byte[length], 0, length);
}
}
public override void Write(byte[] buffer, int offset, int count)
{
long remaining = Length - (UnderlyingStream.Position - PartialStart);
int actuallyWrite = (int)Math.Min(remaining, count);
if (actuallyWrite < 0)
{
return;
}
UnderlyingStream.Write(buffer, offset, actuallyWrite);
}
public override int Read(byte[] buffer, int offset, int count)
{
long remaining = Length - (UnderlyingStream.Position - PartialStart);
int actuallyRead = (int)Math.Min(remaining, count);
if (actuallyRead < 0)
{
return(0);
}
return(UnderlyingStream.Read(buffer, offset, actuallyRead));
}
public override int Read(byte[] buffer, int offset, int count)
{
if (Position >= Length)
{
return(0);
}
int toRead = (int)Math.Min(Length - Position, count);
UnderlyingStream.Position = Position + Start;
int bytesRead = UnderlyingStream.Read(buffer, offset, toRead);
Position += bytesRead;
return(bytesRead);
}
public override int Read(byte[] buffer, int offset, int count)
{
int bytesRead = count;
long max = Length - Position;
if (max < bytesRead)
{
bytesRead = (int)max;
}
UnderlyingStream.Read(buffer, offset, bytesRead);
InternalPosition += bytesRead;
return(bytesRead);
}
public void BinaryListenTask( )
{
try
{
byte currentSequence = 0;
while (IsRunning)
{
if (UnderlyingStream.ReadByte( ) == DatagramHeaderInt)
{
byte sequence = ( byte )UnderlyingStream.ReadByte( );
if (sequence == currentSequence)
{
currentSequence++;
}
else
{
//Todo:???
}
BinaryDatagramType type = ( BinaryDatagramType )( byte )UnderlyingStream.ReadByte( ); //todo:if not throw
byte crc = ( byte )UnderlyingStream.ReadByte( );
byte length = ( byte )UnderlyingStream.ReadByte( );
byte [] data = new byte[length];
UnderlyingStream.Read(data, 0, length);
if (data.CaluCrc8( ) == crc)
{
if (Datagram.Parse(type, data) is ReceiveDatagram datagram)
{
ReceiveQueue.Enqueue(datagram);
}
}
else
{
//todo:Warning?
}
}
}
}
catch (ThreadAbortException)
{
}
}
public override int Read(byte[] buffer, int offset, int count)
{
try
{
int bytes = UnderlyingStream.Read(buffer, offset, count);
_Position += bytes;
Logger?.LogDebug($"StreamRequestWrapper: Read(buffer, {offset}, {count}) returned {bytes} Position: {this.Position} Length: {this.Length}");
return(bytes);
}
catch (Exception)
{
throw;
}
}
BlobChunkVerificationResultInfo EnumerateOneChunk <T>(
out BlobChunkHeader header, ref T resultValue,
Func <BlobTransportStream, BlobChunkHeader, T> getResultValue, bool getResultValueConsumesChunk,
out bool isEof)
{
header = BlobChunkHeader.Null;
isEof = false;
var result = VerifyEnoughBytesForChunkOrData(BlobChunkHeader.kSizeOf);
if (result.IsValid)
{
UnderlyingStream.Stream(ref header);
result = header.VerifyVersionIsPositive()
.And(header, h => h.VerifyDataSize(0))
.And(header, h => h.VerifyFlagsIsPostive())
.And(header, this, (h, s) => s.VerifyEnoughBytesForChunkOrData(h.DataSize));
isEof = header.Signature == StreamFooter.kSignature.ID;
if (result.IsValid)
{
if (isEof)
{
mFooterPosition = BaseStream.Position - BlobChunkHeader.kSizeOf;
mFooter.SerializeSansHeader(UnderlyingStream, header);
mFooter.SerializeAuthenticationData(UnderlyingStream);
}
else
{
resultValue = getResultValue(this, header);
if (!getResultValueConsumesChunk)
{
header.StreamSkipData(BaseStream);
}
}
}
else
{
if (isEof)
{
result.Context = BlobChunkVerificationResultContext.Footer;
}
}
}
return(result);
}
public async override Task <int> ReadAsync(byte[] buffer, int offset, int count, CancellationToken cancellationToken)
{
try
{
int bytes = await UnderlyingStream.ReadAsync(buffer, offset, count);
_Position += bytes;
Logger?.LogDebug($"StreamRequestWrapper: Read(buffer, {offset}, {count}) returned {bytes} Position: {this.Position} Length: {this.Length}");
return(bytes);
}
catch (Exception)
{
throw;
}
}
public BulletinBoardOpenPacket(BulletinBoard Board)
: base(0x71)
{
// Don't need much room here (just enough to take into account a
// non-default bulletin board name)
EnsureCapacity(256);
// Get the name of the bulletin board
string BoardName = Board.Name == null ? "Bulletin Board" : Board.Name;
// Fill the packet data
UnderlyingStream.Write((byte)BulletinPacket.PacketSubType.DisplayBoard);
UnderlyingStream.Write((int)Board.Serial);
UnderlyingStream.WriteAsciiNull(BoardName);
// Log the raw packet info
BulletinPacket.LogPacket("BulletinBoardOpenPacket", UnderlyingStream.ToArray());
}
/// <summary>
/// Obtains an element from the collection.
/// </summary>
/// <param name="index">The index of the element to extract.</param>
/// <returns>The requested element from the collection.</returns>
public TreeNode this[int index]
{
get
{
if (StorageType == StorageTypes.List)
{
return(InternalStorage[index]);
}
else
{
int correspIndex = TreeIndexCorrespondence[index];
if (correspIndex >= 0)
{
UnderlyingStream.Seek(TreeAddresses[correspIndex], SeekOrigin.Begin);
return(UnderlyingReader.ReadTree(GlobalNames, AllNames, AllAttributes));
}
else
{
return(InternalStorage[-correspIndex - 1]);
}
}
}
set
{
if (StorageType == StorageTypes.List)
{
InternalStorage[index] = value;
}
else
{
int correspIndex = TreeIndexCorrespondence[index];
if (correspIndex >= 0)
{
InternalStorage.Add(value);
TreeIndexCorrespondence[index] = -InternalStorage.Count;
}
else
{
InternalStorage[-correspIndex - 1] = value;
}
}
}
}
public object Clone()
{
Stream clonedStream;
if (_isInMemory)
{
clonedStream = new MemoryStream((int)UnderlyingStream.Length);
}
else
{
clonedStream = CreatePersistentStream(_forAsync);
clonedStream.SetLength(this.Length);
}
UnderlyingStream.CopyTo(clonedStream);
clonedStream.Position = 0L;
return(new VirtualStream(_threshholdSize, _memoryStatus, clonedStream, _forAsync));
}
public override void Write(byte[] buffer, int offset, int count)
{
if (Direction == Direction.Read)
{
throw new InvalidOperationException("Incorrect direction");
}
byte[] underlying = new byte[count];
for (int i = 0; i < count; i++)
{
if (Mode == EncryptionMode.Encrypt)
{
underlying[i] = encryptByte(buffer[i + offset]);
}
else
{
underlying[i] = decryptByte(buffer[i + offset]);
}
}
UnderlyingStream.Write(underlying, 0, count);
}