Text Protocol -- Variable length, variable number of lines

[venky10]

Hi,

In the telnet/server case each newline would trigger a MessageEvent. In my
case it would be inefficient, I intend to handle MessageEvent after an X
number (which is variable) of lines have been available for upstream
processing to the StreamDecoder.  If I simple call --

  public void messageReceived(
           ChannelHandlerContext ctx, MessageEvent e) {
            // Cast to a String first.
         // We know it is a String because we put some codec in
TelnetPipelineFactory.
          String several_lines_protocol_msg= (String) e.getMessage();
        :::::
}

 there is no guarantee that all the lines of the protocol packet have been
captured in 
"several_lines_protocol_msg". Or is it the case that if FrameDecoder is not
supplied the message received will be all the bytes available in the stream
?

Thanks a lot.
Venkay


Trustin Lee wrote:
> 
> Hi Venky,
> 
> DelimiterBasedFrameDecoder is perhaps what you are looking for.  Also,
> please refer to the telnet client/server example.
> 
> HTH
> 
> — Trustin Lee, http://gleamynode.net/
> 
> 
> 
> On Sat, Nov 7, 2009 at 7:11 AM, venky10 <vsayyagari at gmail.com> wrote:
>>
>> Hi,
>>
>> I am a newbie to Netty.
>> I have text protocol to decode. It has variable number of lines, all
>> delimited by 'newline'.
>> There is no other end-of-frame delimiter. I am assuming it would be most
>> efficient  to read the entire frame till there are no more lines to be
>> read
>> on single MessageEvent.
>>
>> What is the best approach ?
>>
>> Thanks,
>> Venky
>> --
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