writeBuffer.writeByte(0); // extra length = flags + expiry
writeBuffer.writeByte(0); // data type unused
writeBuffer.writeShort(0x0000); // OK
writeBuffer.writeInt(0); // data length
writeBuffer.writeInt(opaque); // opaque
writeBuffer.writeLong(0); // cas
channel.write(writeBuffer);
return MemcachedDispatcher.IGNORE_REQUEST;
} else if (opcode == 0x07) { // QUIT
channel.disconnect();
} else {