public void sendKeywords(final int cookie, final Collection<String> keywords)
{
int protocolId = ClientServerProtocol.PROTOCOL_FILES;
int opcode = ClientServerProtocol.Files.OP_KEYWORDS;
send(protocolId, opcode, new ConnectionWriterInterface()
{
public void run(ObjectOutputStream os) throws IOException
{
os.writeInt(cookie);
os.writeObject(keywords);