/// <summary>
/// 从流中读入一个缓冲数组
/// </summary>
/// <param name="stream">要读取的流</param>
/// <param name="length">读取的字节长度</param>
/// <param name="cancellationToken">取消操作的TOKEN</param>
/// <returns>缓冲数组</returns>
public static async Task <byte[]> ReadBufferAsync(this Stream stream, int length, CancellationToken?cancellationToken = null)
{
var(buffer, _) = await stream.ReadBufferAsync(length, true, cancellationToken);
return(buffer);
}
/// <summary>
/// 从流中读入一个 <see cref="T:System.Int64"/>
/// </summary>
/// <param name="stream">要读取的流</param>
/// <param name="cancellationToken">取消操作的TOKEN</param>
/// <returns>读取的 <see cref="T:System.Int64"/></returns>
public static async Task <long> ReadInt64Async(this Stream stream, CancellationToken?cancellationToken = null)
{
return(BitConverter.ToInt64(await stream.ReadBufferAsync(8, cancellationToken), 0));
}
/// <summary>
/// 从流中读入一个 <see cref="T:System.Int64"/>
/// </summary>
/// <param name="stream">要读取的流</param>
/// <param name="cancellationToken">取消操作的TOKEN</param>
/// <returns>读取的 <see cref="T:System.Int64"/></returns>
public static async Task <double> ReadDoubleAsync(this Stream stream, CancellationToken?cancellationToken = null)
{
return(BitConverter.ToDouble(await stream.ReadBufferAsync(sizeof(double), cancellationToken), 0));
}
/// <summary>
/// 从流中读入一个 <see cref="T:System.Int32"/>
/// </summary>
/// <param name="stream">要读取的流</param>
/// <param name="cancellationToken">取消操作的TOKEN</param>
/// <returns>读取的 <see cref="T:System.Int32"/></returns>
public static async Task <uint> ReadUInt32Async(this Stream stream, CancellationToken?cancellationToken = null)
{
return(BitConverter.ToUInt32(await stream.ReadBufferAsync(4, cancellationToken), 0));
}