[sockets] layers concept
Hi I created the layers concept for the C++ Networking boost library. The layers I defined are: Layer 1 :- Light weight wrappers arround predominantl BSD socket concepts. Layer 2 :- Acceptor, Connector, Reactor, and Svc_Handler concepts ala ACE. Layer 3 :- An optional iostreams interface if desirable? Layer 4:- Applications layer - includes ftp, telent, http/s And user applications Please note there is no Layer 0 ( zero ) it does not exist. These layers are a key to understandable discussion on the list and avoidance of confusion. This makes Don G's propasal a Layer 2 porpasal IIUC. There have been other proposals at Layer 2. Boris has also been atempting bto model Layer 1 but keeps calling itlayer 0. we need a common nomenclture or confusion will reign. /ikh
Iain K. Hanson wrote:
Hi
I created the layers concept for the C++ Networking boost library.
The layers I defined are:
Layer 1 :- Light weight wrappers arround predominantl BSD socket concepts.
Layer 2 :- Acceptor, Connector, Reactor, and Svc_Handler concepts ala ACE.
Layer 3 :- An optional iostreams interface if desirable?
Layer 4:- Applications layer - includes ftp, telent, http/s And user applications
Is layer a package or a level of abstraction? I ask as I wonder if eg. layer 3 is based on layer 2? If you look at http://www.highscore.de/boost/net/packages.png I put the packages "ace" (your layer 2) and "iostream" (your layer 3) both in layer 1 because they don't necessarily depend on each other and I don't know if we can tell which one of the two packages has a higher level of abstraction.
[...] Boris has also been atempting bto model Layer 1 but keeps calling itlayer 0.
Hey, everyone called it level 0! :-)
we need a common nomenclture or confusion will reign.
That's why I added the link to the package structure at http://www.highscore.de/boost/net/packages.png everywhere to make sure we talk about the same. It's quite similar to your layers concept except that you created new application layer. Boris
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Iain K. Hanson