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<p class=MsoPlainText><font size=2 face=Tahoma><span style='font-size:10.0pt;
font-family:Tahoma'>Hi Trustin,<o:p></o:p></span></font></p>
<p class=MsoPlainText><font size=2 face=Tahoma><span style='font-size:10.0pt;
font-family:Tahoma'><o:p> </o:p></span></font></p>
<p class=MsoPlainText><font size=2 face=Tahoma><span style='font-size:10.0pt;
font-family:Tahoma'>Thanks very much for your new </span></font>Proxy<font
face=Tahoma><span style='font-family:Tahoma'> example. I had taken some time
yesterday to try and write what I was describing before (using the </span></font>Telnet<font
face=Tahoma><span style='font-family:Tahoma'> example as a basis); it will be
very useful to me to compare it to what you wrote. I have several questions
(and metaquestions) for now:<o:p></o:p></span></font></p>
<p class=MsoPlainText><font size=2 face=Tahoma><span style='font-size:10.0pt;
font-family:Tahoma'><o:p> </o:p></span></font></p>
<p class=MsoPlainText style='margin-left:.5in;text-indent:-.25in;mso-list:l0 level1 lfo2'><![if !supportLists]><font
size=2 face=Symbol><span style='font-size:10.0pt;font-family:Symbol'><span
style='mso-list:Ignore'>¡¤<font size=1 face="Times New Roman"><span
style='font:7.0pt "Times New Roman"'>
</span></font></span></span></font><![endif]><font face=Tahoma><span
style='font-family:Tahoma'>It would be great if the Java source code (like the link
you provided) could be shown with syntax coloring and line numbers.<o:p></o:p></span></font></p>
<p class=MsoPlainText style='margin-left:.5in;text-indent:-.25in;mso-list:l0 level1 lfo2'><![if !supportLists]><font
size=2 face=Symbol><span style='font-size:10.0pt;font-family:Symbol'><span
style='mso-list:Ignore'>¡¤<font size=1 face="Times New Roman"><span
style='font:7.0pt "Times New Roman"'>
</span></font></span></span></font><![endif]><font face=Tahoma><span
style='font-family:Tahoma'>In your </span></font>HexDumpProxy<font face=Tahoma><span
style='font-family:Tahoma'> example, you only create a </span></font>ServerBootstrap<font
face=Tahoma><span style='font-family:Tahoma'> but do not create a </span></font>ClientBootstrap<font
face=Tahoma><span style='font-family:Tahoma'>; instead, you create the </span></font>NioClientSocketChannelFactory<font
face=Tahoma><span style='font-family:Tahoma'> ¡°stand alone¡±. Then, within the </span></font>HexDumpProxyInboundHandler<font
face=Tahoma><span style='font-family:Tahoma'> you do create the </span></font>ClientBootstrap<font
face=Tahoma><span style='font-family:Tahoma'>. Why do you do it this way?<o:p></o:p></span></font></p>
<p class=MsoPlainText style='margin-left:.5in;text-indent:-.25in;mso-list:l0 level1 lfo2'><![if !supportLists]><font
size=2 face=Symbol><span style='font-size:10.0pt;font-family:Symbol'><span
style='mso-list:Ignore'>¡¤<font size=1 face="Times New Roman"><span
style='font:7.0pt "Times New Roman"'>
</span></font></span></span></font><![endif]><font face=Tahoma><span
style='font-family:Tahoma'>In the </span></font>HexDumpProxyPipelineFactory<font
face=Tahoma><span style='font-family:Tahoma'> you only add one handler (a </span></font>HexDumpProxyInboundHandler<font
face=Tahoma><span style='font-family:Tahoma'>) to the pipeline. Yesterday, with
my own code, I tried doing this but got runtime exceptions indicating I could
not cast a </span></font>String<font face=Tahoma><span style='font-family:Tahoma'>
to a </span></font>ChannelBuffer<font face=Tahoma><span style='font-family:
Tahoma'>. After looking more closely to the </span></font>Telnet<font
face=Tahoma><span style='font-family:Tahoma'> example, I decided to add three
additional handlers before my own: a </span></font>DelimiterBasedFrameDecoder<font
face=Tahoma><span style='font-family:Tahoma'>, a </span></font>StringDecoder<font
face=Tahoma><span style='font-family:Tahoma'> and a </span></font>StringEncoder<font
face=Tahoma><span style='font-family:Tahoma'>. With that, my code worked fine,
but I don't understand how you don't need those same handlers in the </span></font>Proxy<font
face=Tahoma><span style='font-family:Tahoma'>.<o:p></o:p></span></font></p>
<p class=MsoPlainText style='margin-left:.5in;text-indent:-.25in;mso-list:l0 level1 lfo2'><![if !supportLists]><font
size=2 face=Symbol><span style='font-size:10.0pt;font-family:Symbol'><span
style='mso-list:Ignore'>¡¤<font size=1 face="Times New Roman"><span
style='font:7.0pt "Times New Roman"'>
</span></font></span></span></font><![endif]><font face=Tahoma><span
style='font-family:Tahoma'>From what I understand, the </span></font>OutboundHandler<font
face=Tahoma><span style='font-family:Tahoma'> as implemented is receiving
messages and sending them right back to the proxy. This caters to my
¡°requirements¡±, but it might be clearer for a simple proxy example to just
print out the received messages.<o:p></o:p></span></font></p>
<p class=MsoPlainText style='margin-left:.5in;text-indent:-.25in;mso-list:l0 level1 lfo2'><![if !supportLists]><font
size=2 face=Symbol><span style='font-size:10.0pt;font-family:Symbol'><span
style='mso-list:Ignore'>¡¤<font size=1 face="Times New Roman"><span
style='font:7.0pt "Times New Roman"'>
</span></font></span></span></font><![endif]><font face=Tahoma><span
style='font-family:Tahoma'>Other than the javadoc documentation, is there a
good ¡°manual for developers using Netty¡± anywhere? The user guide is very
enlightening, but I am thinking more along the lines of architectural designs,
patterns, when to use a class or another, etc.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Tahoma><span style='font-size:10.0pt;
font-family:Tahoma'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Tahoma><span style='font-size:10.0pt;
font-family:Tahoma'>Finally, for full disclosure: I posted a similar question
(I mean my ¡°requirements¡±) on the MINA mailing list. I know next to nothing
about MINA and Netty, and am trying to compare them for my purposes.<o:p></o:p></span></font></p>
<p class=MsoPlainText><font size=2 face=Tahoma><span style='font-size:10.0pt;
font-family:Tahoma'><o:p> </o:p></span></font></p>
<p class=MsoPlainText><font size=2 face=Tahoma><span style='font-size:10.0pt;
font-family:Tahoma'>Thanks again and best regards,<o:p></o:p></span></font></p>
<p class=MsoPlainText><font size=2 face=Tahoma><span style='font-size:10.0pt;
font-family:Tahoma'><o:p> </o:p></span></font></p>
<p class=MsoPlainText><font size=2 face=Tahoma><span lang=ES-CL
style='font-size:10.0pt;font-family:Tahoma'>-- <o:p></o:p></span></font></p>
<p class=MsoPlainText><font size=2 face=Tahoma><span lang=ES-CL
style='font-size:10.0pt;font-family:Tahoma'>Gonzalo Diethelm<o:p></o:p></span></font></p>
<p class=MsoPlainText><font size=2 face=Tahoma><span lang=ES-CL
style='font-size:10.0pt;font-family:Tahoma'>DCV - Chile<o:p></o:p></span></font></p>
<p class=MsoPlainText><font size=2 face=Tahoma><span lang=ES-CL
style='font-size:10.0pt;font-family:Tahoma'><o:p> </o:p></span></font></p>
<p class=MsoPlainText><font size=2 face=Tahoma><span lang=ES-CL
style='font-size:10.0pt;font-family:Tahoma'><o:p> </o:p></span></font></p>
<p class=MsoPlainText><font size=2 face=Tahoma><span lang=ES-CL
style='font-size:10.0pt;font-family:Tahoma'>> </span></font><font
face=Tahoma><span style='font-family:Tahoma'>-----Original Message-----</span></font><font
face=Tahoma><span lang=ES-CL style='font-family:Tahoma'><o:p></o:p></span></font></p>
<p class=MsoPlainText><font size=2 face=Tahoma><span lang=ES-CL
style='font-size:10.0pt;font-family:Tahoma'>> </span></font><font
face=Tahoma><span style='font-family:Tahoma'>From:
netty-users-bounces@lists.jboss.org [mailto:netty-users-</span></font><font
face=Tahoma><span lang=ES-CL style='font-family:Tahoma'><o:p></o:p></span></font></p>
<p class=MsoPlainText><font size=2 face=Tahoma><span lang=ES-CL
style='font-size:10.0pt;font-family:Tahoma'>> </span></font><font
face=Tahoma><span style='font-family:Tahoma'>bounces@lists.jboss.org] On Behalf
Of "??? (Trustin Lee)"</span></font><font face=Tahoma><span
lang=ES-CL style='font-family:Tahoma'><o:p></o:p></span></font></p>
<p class=MsoPlainText><font size=2 face=Tahoma><span lang=ES-CL
style='font-size:10.0pt;font-family:Tahoma'>> </span></font><font
face=Tahoma><span style='font-family:Tahoma'>Sent: Friday 12 Jun 2009 04:50</span></font><font
face=Tahoma><span lang=ES-CL style='font-family:Tahoma'><o:p></o:p></span></font></p>
<p class=MsoPlainText><font size=2 face=Tahoma><span lang=ES-CL
style='font-size:10.0pt;font-family:Tahoma'>> </span></font><font
face=Tahoma><span style='font-family:Tahoma'>To: netty-users@lists.jboss.org</span></font><font
face=Tahoma><span lang=ES-CL style='font-family:Tahoma'><o:p></o:p></span></font></p>
<p class=MsoPlainText><font size=2 face=Tahoma><span lang=ES-CL
style='font-size:10.0pt;font-family:Tahoma'>> </span></font><font
face=Tahoma><span style='font-family:Tahoma'>Subject: Re: Server and Client at
the same time</span></font><font face=Tahoma><span lang=ES-CL style='font-family:
Tahoma'><o:p></o:p></span></font></p>
<p class=MsoPlainText><font size=2 face=Tahoma><span lang=ES-CL
style='font-size:10.0pt;font-family:Tahoma'>> <o:p></o:p></span></font></p>
<p class=MsoPlainText><font size=2 face=Tahoma><span lang=ES-CL
style='font-size:10.0pt;font-family:Tahoma'>> Hi Gonzus,<o:p></o:p></span></font></p>
<p class=MsoPlainText><font size=2 face=Tahoma><span lang=ES-CL
style='font-size:10.0pt;font-family:Tahoma'>> <o:p></o:p></span></font></p>
<p class=MsoPlainText><font size=2 face=Tahoma><span lang=ES-CL
style='font-size:10.0pt;font-family:Tahoma'>> I have been asked by many
people about implementing such a proxy server,<o:p></o:p></span></font></p>
<p class=MsoPlainText><font size=2 face=Tahoma><span lang=ES-CL
style='font-size:10.0pt;font-family:Tahoma'>> so I decided to write an
example proxy server. It's much easier to<o:p></o:p></span></font></p>
<p class=MsoPlainText><font size=2 face=Tahoma><span lang=ES-CL
style='font-size:10.0pt;font-family:Tahoma'>> write an implementation than
to explain how to do that, especially when<o:p></o:p></span></font></p>
<p class=MsoPlainText><font size=2 face=Tahoma><span lang=ES-CL
style='font-size:10.0pt;font-family:Tahoma'>> it comes down to proxy server.
:)<o:p></o:p></span></font></p>
<p class=MsoPlainText><font size=2 face=Tahoma><span lang=ES-CL
style='font-size:10.0pt;font-family:Tahoma'>> <o:p></o:p></span></font></p>
<p class=MsoPlainText><font size=2 face=Tahoma><span lang=ES-CL
style='font-size:10.0pt;font-family:Tahoma'>> Check this out:<o:p></o:p></span></font></p>
<p class=MsoPlainText><font size=2 face=Tahoma><span lang=ES-CL
style='font-size:10.0pt;font-family:Tahoma'>> <o:p></o:p></span></font></p>
<p class=MsoPlainText><font size=2 face=Tahoma><span lang=ES-CL
style='font-size:10.0pt;font-family:Tahoma'>> http://viewvc.jboss.org/cgi-<o:p></o:p></span></font></p>
<p class=MsoPlainText><font size=2 face=Tahoma><span lang=ES-CL
style='font-size:10.0pt;font-family:Tahoma'>> bin/viewvc.cgi/netty/trunk/src/main/java/org/jboss/netty/example/proxy/<o:p></o:p></span></font></p>
<p class=MsoPlainText><font size=2 face=Tahoma><span lang=ES-CL
style='font-size:10.0pt;font-family:Tahoma'>> <o:p></o:p></span></font></p>
<p class=MsoPlainText><font size=2 face=Tahoma><span lang=ES-CL
style='font-size:10.0pt;font-family:Tahoma'>> Shutting down is not very
different from writing an ordinary server or<o:p></o:p></span></font></p>
<p class=MsoPlainText><font size=2 face=Tahoma><span lang=ES-CL
style='font-size:10.0pt;font-family:Tahoma'>> client application. Only
one difference is that you need to shut down<o:p></o:p></span></font></p>
<p class=MsoPlainText><font size=2 face=Tahoma><span lang=ES-CL
style='font-size:10.0pt;font-family:Tahoma'>> both client side and server
side ChannelFactory at last.<o:p></o:p></span></font></p>
<p class=MsoPlainText><font size=2 face=Tahoma><span lang=ES-CL
style='font-size:10.0pt;font-family:Tahoma'>> <o:p></o:p></span></font></p>
<p class=MsoPlainText><font size=2 face=Tahoma><span lang=ES-CL
style='font-size:10.0pt;font-family:Tahoma'>> HTH,<o:p></o:p></span></font></p>
<p class=MsoPlainText><font size=2 face=Tahoma><span lang=ES-CL
style='font-size:10.0pt;font-family:Tahoma'>> Trustin<o:p></o:p></span></font></p>
<p class=MsoPlainText><font size=2 face=Tahoma><span lang=ES-CL
style='font-size:10.0pt;font-family:Tahoma'>> <o:p></o:p></span></font></p>
<p class=MsoPlainText><font size=2 face=Tahoma><span lang=ES-CL
style='font-size:10.0pt;font-family:Tahoma'>> On 2009-06-11 </span></font><font
face=Batang><span lang=KO style='font-family:Batang'>¿ÀÈÄ</span></font><font
face=Tahoma><span lang=ES-CL style='font-family:Tahoma'> 11:56, gonzus wrote:<o:p></o:p></span></font></p>
<p class=MsoPlainText><font size=2 face=Tahoma><span lang=ES-CL
style='font-size:10.0pt;font-family:Tahoma'>> ><o:p></o:p></span></font></p>
<p class=MsoPlainText><font size=2 face=Tahoma><span lang=ES-CL
style='font-size:10.0pt;font-family:Tahoma'>> > Hello everyone, this is
my first post here. I am examining Netty (after<o:p></o:p></span></font></p>
<p class=MsoPlainText><font size=2 face=Tahoma><span lang=ES-CL
style='font-size:10.0pt;font-family:Tahoma'>> a<o:p></o:p></span></font></p>
<p class=MsoPlainText><font size=2 face=Tahoma><span lang=ES-CL
style='font-size:10.0pt;font-family:Tahoma'>> > brief look at MINA) and
would like to gather opinions on how to<o:p></o:p></span></font></p>
<p class=MsoPlainText><font size=2 face=Tahoma><span lang=ES-CL
style='font-size:10.0pt;font-family:Tahoma'>> implement a<o:p></o:p></span></font></p>
<p class=MsoPlainText><font size=2 face=Tahoma><span lang=ES-CL
style='font-size:10.0pt;font-family:Tahoma'>> > proof of concept for my
requirements.<o:p></o:p></span></font></p>
<p class=MsoPlainText><font size=2 face=Tahoma><span lang=ES-CL
style='font-size:10.0pt;font-family:Tahoma'>> ><o:p></o:p></span></font></p>
<p class=MsoPlainText><font size=2 face=Tahoma><span lang=ES-CL
style='font-size:10.0pt;font-family:Tahoma'>> > I intend to have two
copies of the same program running on the same<o:p></o:p></span></font></p>
<p class=MsoPlainText><font size=2 face=Tahoma><span lang=ES-CL
style='font-size:10.0pt;font-family:Tahoma'>> machine<o:p></o:p></span></font></p>
<p class=MsoPlainText><font size=2 face=Tahoma><span lang=ES-CL
style='font-size:10.0pt;font-family:Tahoma'>> > (this is not a
requirement, it is just easier). The two programs will be<o:p></o:p></span></font></p>
<p class=MsoPlainText><font size=2 face=Tahoma><span lang=ES-CL
style='font-size:10.0pt;font-family:Tahoma'>> run<o:p></o:p></span></font></p>
<p class=MsoPlainText><font size=2 face=Tahoma><span lang=ES-CL
style='font-size:10.0pt;font-family:Tahoma'>> > like this:<o:p></o:p></span></font></p>
<p class=MsoPlainText><font size=2 face=Tahoma><span lang=ES-CL
style='font-size:10.0pt;font-family:Tahoma'>> ><o:p></o:p></span></font></p>
<p class=MsoPlainText><font size=2 face=Tahoma><span lang=ES-CL
style='font-size:10.0pt;font-family:Tahoma'>> > $ program 8001 8002<o:p></o:p></span></font></p>
<p class=MsoPlainText><font size=2 face=Tahoma><span lang=ES-CL
style='font-size:10.0pt;font-family:Tahoma'>> > $ program 8002 8001<o:p></o:p></span></font></p>
<p class=MsoPlainText><font size=2 face=Tahoma><span lang=ES-CL
style='font-size:10.0pt;font-family:Tahoma'>> ><o:p></o:p></span></font></p>
<p class=MsoPlainText><font size=2 face=Tahoma><span lang=ES-CL
style='font-size:10.0pt;font-family:Tahoma'>> > This means the first copy
will bind on port 8001 and try to connect to<o:p></o:p></span></font></p>
<p class=MsoPlainText><font size=2 face=Tahoma><span lang=ES-CL
style='font-size:10.0pt;font-family:Tahoma'>> port<o:p></o:p></span></font></p>
<p class=MsoPlainText><font size=2 face=Tahoma><span lang=ES-CL
style='font-size:10.0pt;font-family:Tahoma'>> > 8002, and the second
program will bind on port 8002 and try to connect<o:p></o:p></span></font></p>
<p class=MsoPlainText><font size=2 face=Tahoma><span lang=ES-CL
style='font-size:10.0pt;font-family:Tahoma'>> to<o:p></o:p></span></font></p>
<p class=MsoPlainText><font size=2 face=Tahoma><span lang=ES-CL
style='font-size:10.0pt;font-family:Tahoma'>> > port 8001. After successful
connection, the program will send a single<o:p></o:p></span></font></p>
<p class=MsoPlainText><font size=2 face=Tahoma><span lang=ES-CL
style='font-size:10.0pt;font-family:Tahoma'>> > string "Hello
World"; after making sure it has sent one string and<o:p></o:p></span></font></p>
<p class=MsoPlainText><font size=2 face=Tahoma><span lang=ES-CL
style='font-size:10.0pt;font-family:Tahoma'>> received<o:p></o:p></span></font></p>
<p class=MsoPlainText><font size=2 face=Tahoma><span lang=ES-CL
style='font-size:10.0pt;font-family:Tahoma'>> > one string, the program
will shut down gracefully.<o:p></o:p></span></font></p>
<p class=MsoPlainText><font size=2 face=Tahoma><span lang=ES-CL
style='font-size:10.0pt;font-family:Tahoma'>> ><o:p></o:p></span></font></p>
<p class=MsoPlainText><font size=2 face=Tahoma><span lang=ES-CL
style='font-size:10.0pt;font-family:Tahoma'>> > What I am trying to learn
is how to do the following in Netty:<o:p></o:p></span></font></p>
<p class=MsoPlainText><font size=2 face=Tahoma><span lang=ES-CL
style='font-size:10.0pt;font-family:Tahoma'>> ><o:p></o:p></span></font></p>
<p class=MsoPlainText><font size=2 face=Tahoma><span lang=ES-CL
style='font-size:10.0pt;font-family:Tahoma'>> > 1. Have an acceptor and
connector at the same time running on the same<o:p></o:p></span></font></p>
<p class=MsoPlainText><font size=2 face=Tahoma><span lang=ES-CL
style='font-size:10.0pt;font-family:Tahoma'>> > program.<o:p></o:p></span></font></p>
<p class=MsoPlainText><font size=2 face=Tahoma><span lang=ES-CL
style='font-size:10.0pt;font-family:Tahoma'>> > 2. Handle failed connect
attempts and a reconnection policy.<o:p></o:p></span></font></p>
<p class=MsoPlainText><font size=2 face=Tahoma><span lang=ES-CL
style='font-size:10.0pt;font-family:Tahoma'>> > 3. Proper way of shutting
down a server.<o:p></o:p></span></font></p>
<p class=MsoPlainText><font size=2 face=Tahoma><span lang=ES-CL
style='font-size:10.0pt;font-family:Tahoma'>> ><o:p></o:p></span></font></p>
<p class=MsoPlainText><font size=2 face=Tahoma><span lang=ES-CL
style='font-size:10.0pt;font-family:Tahoma'>> > Are there any examples
that could help me implement this? Any<o:p></o:p></span></font></p>
<p class=MsoPlainText><font size=2 face=Tahoma><span lang=ES-CL
style='font-size:10.0pt;font-family:Tahoma'>> suggestions?<o:p></o:p></span></font></p>
<p class=MsoPlainText><font size=2 face=Tahoma><span lang=ES-CL
style='font-size:10.0pt;font-family:Tahoma'>> ><o:p></o:p></span></font></p>
<p class=MsoPlainText><font size=2 face=Tahoma><span lang=ES-CL
style='font-size:10.0pt;font-family:Tahoma'>> > Extra credit :-D if the
program ends up being capable of running a<o:p></o:p></span></font></p>
<p class=MsoPlainText><font size=2 face=Tahoma><span lang=ES-CL
style='font-size:10.0pt;font-family:Tahoma'>> single<o:p></o:p></span></font></p>
<p class=MsoPlainText><font size=2 face=Tahoma><span lang=ES-CL
style='font-size:10.0pt;font-family:Tahoma'>> > copy like this and doing
"the obvious":<o:p></o:p></span></font></p>
<p class=MsoPlainText><font size=2 face=Tahoma><span lang=ES-CL
style='font-size:10.0pt;font-family:Tahoma'>> ><o:p></o:p></span></font></p>
<p class=MsoPlainText><font size=2 face=Tahoma><span lang=ES-CL
style='font-size:10.0pt;font-family:Tahoma'>> > $ program 8003 8003<o:p></o:p></span></font></p>
<p class=MsoPlainText><font size=2 face=Tahoma><span lang=ES-CL
style='font-size:10.0pt;font-family:Tahoma'>> ><o:p></o:p></span></font></p>
<p class=MsoPlainText><font size=2 face=Tahoma><span lang=ES-CL
style='font-size:10.0pt;font-family:Tahoma'>> > Thanks in advance and
best regards.<o:p></o:p></span></font></p>
<p class=MsoPlainText><font size=2 face=Tahoma><span lang=ES-CL
style='font-size:10.0pt;font-family:Tahoma'>> <o:p></o:p></span></font></p>
<p class=MsoPlainText><font size=2 face=Tahoma><span lang=ES-CL
style='font-size:10.0pt;font-family:Tahoma'>> <o:p></o:p></span></font></p>
<p class=MsoPlainText><font size=2 face=Tahoma><span lang=ES-CL
style='font-size:10.0pt;font-family:Tahoma'>> --<o:p></o:p></span></font></p>
<p class=MsoPlainText><font size=2 face=Tahoma><span lang=ES-CL
style='font-size:10.0pt;font-family:Tahoma'>> — Trustin Lee,
http://gleamynode.net/<o:p></o:p></span></font></p>
<p class=MsoPlainText><font size=2 face=Tahoma><span lang=ES-CL
style='font-size:10.0pt;font-family:Tahoma'><o:p> </o:p></span></font></p>
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