Z_PACKET_FLUSH
r = zlib_deflate(&state->strm, Z_PACKET_FLUSH);
r = zlib_inflate(&state->strm, Z_PACKET_FLUSH);
} else if (flush == Z_PACKET_FLUSH) {
if (flush == Z_BLOCK || flush == Z_PACKET_FLUSH) {
if (flush == Z_PACKET_FLUSH && ret == Z_OK &&