func swapStreamRW(strm stream.Stream, compressor Compressor) error {
return strm.UpdateRW(
func(srwc io.ReadWriteCloser) (io.ReadWriteCloser, error) {
writer := compressor.GetWriter(srwc)
reader, err := compressor.GetReader(srwc)
if err != nil {
log.Println("Could not create compressed reader", err)
if err := strm.WriteElement(&SetupFailedError{}); err != nil {
return nil, err
}
return nil, err
}
return NewCompressionReadWriter(srwc, reader, writer), nil
})
}
