extras.writeInt(msg.expiry());
String key = msg.key();
short keyLength = (short) key.length();
byte extrasLength = (byte) extras.readableBytes();
BinaryMemcacheRequest request = new DefaultBinaryMemcacheRequest(key);
request.setExtras(extras);
request.setOpcode(OP_TOUCH);
request.setKeyLength(keyLength);
request.setTotalBodyLength(keyLength + extrasLength);
request.setExtrasLength(extrasLength);
return request;
}