Hi,
To get the same result using MINA as you get with your plain socket
server (the one using readLine()) I suggest you have a look at the
TextLineCodec
(http://directory.apache.org/subprojects/mina/apidocs/org/apache/mina/filter/codec/textline/TextLineCodecFactory.html).
When using it MINA will automatically split the received data on \n
characters and each line will be delivered to your IoHandler seperately.
IIRC TextLineCodec will also strip the \n from the lines just like
readLine() does. Your messageReceived() method (which is roughly the
MINA 0.9 equivalent of MINA 0.8's dataRead() method) will be called 10
times just as you want and you don't have to call flush() on the client
side for each line.
Unfortunately I don't know exactly how to do the above in MINA 0.8. I
suggest you use the latest 0.9 release instead. That will make thinks a
lot simpler (at least for me if you need more help).
/Niklas
hpq852 wrote:
> I mainly want to get what is if client flush for 10 times , then the server
> side dataRead method should be invoked 10 times, but I think it can't come
> true. I have followed peter's idea, but it can't resolve the problem.
>
> When I don't use NIO just use Socket then it can work well. I think the
> reason is what in socket way the thread was be blocked by in.readLine()
> method, if client have a flush, then the server can read the data:
>
> while (true)
> {
> String str = in.readLine();
> System.out.println(str);
> System.out.println("-----------------");
> }
>
> but in SocketChannel and selector way ,the selector only check if channel
> have data coming. When data come then it will we invoke channel reading the
> data, but in the period of this process, maybe another flush have be invoked,
> then another ' Hello World ' have comed. So the dataRead moethod may print
> the combined string. Is this right ? How should I do if I want to get what I
> want ? Thank you .
>
>
> hpq852
> 2006-07-24
>
>
>
> 发件人： Maarten Bosteels
> 发送时间： 2006-07-24 16:12:18
> 收件人： [email protected]
> 抄送：
> 主题： Re: About Mina Question, Could you help me ?
>
> I do not quite understand the problem. Do you want every "Hello
> World" to be
> in a separate TCP packet ?
> I don't think it is a good idea to try to accomplish that
> behavior.
> Your code should not depend on the number of packets used to
> transfer the
> data.
>
> Why don't you use delimiter to tell the messages apart ?
> Our use TextLineDecoder:
>
> http://directory.apache.org/subprojects/mina/apidocs/org/apache/mina/filter/codec/textline/TextLineDecoder.html
>
> btw, any particular reason you are still using MINA 0.8 ?
>
> Maarten
>
> On 7/24/06, peter royal <[EMAIL PROTECTED] > wrote:
>
>> On Jul 23, 2006, at 11:14 AM, hpq852 wrote:
>> > It alse can't work well, Now the client is :
>> >
>> > public void run()
>> > {
>> > for(int i=0; i <10; i++)
>> > {
>> > out.print(" Hello World \n");
>> > out.flush();
>> > }
>> > }
>> >
>> > if I invode the flush method for 10 times, I also want to
>> get the
>> > dataRead(IoSession session, ByteBuffer rb) mothed invoked
>>
>> Try toggling TCP_NODELAY. By default, your TCP stack will try to
>> combine data into a single packet, which would result in fewer
>> invocations of dataRead.
>>
>> -epte
>>
>>
>> --
>> [EMAIL PROTECTED] - http://fotap.org/~osi
>>
>>
>>
>>
>>
>>
>>
--
Niklas Therning
Software Architect
www.spamdrain.net
