async Task CopyAsync(
IReadOnlyStream source,
IWriteOnlyStream destination,
CancellationToken cancellationToken = default)
{
byte[] buffer = this._bufferPool.Rent(4096);
try
{
int bytesRead;
while ((bytesRead = await source
.ReadAsync(buffer, 0, buffer.Length, cancellationToken)
.ConfigureAwait(false)) != 0)
{
// Transform
await destination
.WriteAsync(buffer, 0, bytesRead, cancellationToken)
.ConfigureAwait(false);
}
}
finally
{
this._bufferPool.Return(buffer);
}
}
public static async Task CopyTo <TReadOnlyStream>(
this TReadOnlyStream source,
IWriteOnlyStream destination,
byte[] buffer,
CancellationToken cancellationToken = default) where TReadOnlyStream : IReadOnlyStream
{
if (destination == null)
{
throw new ArgumentNullException(nameof(destination));
}
if (buffer == null)
{
throw new ArgumentNullException(nameof(buffer));
}
int bytesRead;
while ((bytesRead = await source
.ReadAsync(buffer, 0, buffer.Length, cancellationToken)
.ConfigureAwait(false)) != 0)
{
await destination
.WriteAsync(buffer, 0, bytesRead, cancellationToken)
.ConfigureAwait(false);
}
}
public async Task WriteToAsync(IWriteOnlyStream stream, ArrayPool <byte> bufferPool)
{
if (stream == null)
{
throw new ArgumentNullException(nameof(stream));
}
if (bufferPool == null)
{
throw new ArgumentNullException(nameof(bufferPool));
}
// | VER | REP | RSV | ATYP | BND.ADDR | BND.PORT |
// | 1 | 1 | X'00' | 1 | Variable | 2 |
var buffer = bufferPool.Rent(4 + 1 + byte.MaxValue + sizeof(ushort));
try
{
buffer[0] = 5;
buffer[1] = (byte)this.ReplyType;
buffer[2] = 0;
var bindEndPoint = this.BindEndPoint ?? new IPEndPoint(new IPAddress(0L), 0);
int endPointBytesWritten = bindEndPoint.ToBytes(buffer, 3);
await stream.WriteAsync(buffer, 0, 3 + endPointBytesWritten).ConfigureAwait(false);
}
finally
{
bufferPool.Return(buffer);
}
}
public async Task WriteToAsync(IWriteOnlyStream stream, ArrayPool <byte> bufferPool)
{
if (stream == null)
{
throw new ArgumentNullException(nameof(stream));
}
if (bufferPool == null)
{
throw new ArgumentNullException(nameof(bufferPool));
}
// | VER | METHOD |
// | 1 | 1 |
var buffer = bufferPool.Rent(2);
try
{
buffer[0] = 5;
buffer[1] = (byte)this.SelectedAuthenticationMethod;
await stream.WriteAsync(buffer, 0, 2).ConfigureAwait(false);
}
finally
{
bufferPool.Return(buffer);
}
}
