readBuffer method

ByteBuf readBuffer(int length)

Returns a ByteBuf viewing a region beginning at readerIndex with the length of length.

The ByteBuf.writerIndex is set to length and the ByteBuf.readerIndex is set to 0, making the whole region readable via ByteBuf.readAvailableBytes.

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Exceptions:

• ReadIndexOutOfRangeException if the current reader index is outside of the bounds of the buffer.

• BufferOverreadException if the length of the readerIndex + length is outside of the bounds of the buffer.

Implementation

ByteBuf readBuffer(int length) {
  assertReadable(readerIndex, length);
  try {
    return viewBuffer(readerIndex, length)..writerIndex += length;
  } finally {
    readerIndex += length;
  }
}