Fill buffer with the next buffer.len bytes from the stream, advancing
the seek position.
Invalidates previously returned values from peek.
If the provided buffer cannot be filled completely, error.EndOfStream is
returned instead.
See also:
peekreadSliceShortpub fn readSliceAll(r: *Reader, buffer: []u8) Error!void
pub fn readSliceAll(r: *Reader, buffer: []u8) Error!void {
const n = try readSliceShort(r, buffer);
if (n != buffer.len) return error.EndOfStream;
}