Thanks for the reply. So if I'm currently writing "protocolX" with the intention of adding a transport protocol under it later, I should NOT implement "protocolX" as codec filter or I will not be able to put any other protocol underneath it? I should write it instead as something that implements IoFilter directly?
Trustin Lee wrote: > > Hi bea, > > On 7/10/07, bea <[EMAIL PROTECTED]> wrote: >> >> Hello, >> >> Is there some tutorial which explains how to implement a multi layer >> protocol in mina? This is my first attempt at using Mina and my guess was >> that I would implement a codec filter for each protocol and chain them >> together. However, I find that I cannot add more than one codec filter to >> a >> chain so what can I do? >> >> Lets say I have a custom text-based protocol which I would like to have >> the >> option of sending over different transport protocols. Today, I want it to >> go >> over a plain socket but tomorrow, I may want to layer it over HTTP. How >> does >> one do this with Mina? > > You can insert one ProtocolCodecFilter with a codec that decodes > incoming ByteBuffers into your favorite POJOs (message objects). Once > message objects are generated, you can insert a custom filter that > translates a certain type of message objects. By adding such filters > after the ProtocolCodecFilter, you can implement a multi-layered > protocol. > > To illustrate the message flow: > > ByteBuffer --[ProtocolCodecFilter]--> FirstLayerMesssage --... > ..--[YourFilter]--> SecondLayerMessage .... > > Mat gave you a link to the related topic, but I felt like I need to > provide an answer focused to your question. > > HTH, > Trustin > -- > what we call human nature is actually human habit > -- > http://gleamynode.net/ > -- > PGP Key ID: 0x0255ECA6 > > -- View this message in context: http://www.nabble.com/Multi-layer-protocol-in-mina--tf4053410.html#a11528878 Sent from the mina dev mailing list archive at Nabble.com.
