Date: 2001-07-31 11:20:58
Author: williamkempf (williamkempf_at_[hidden]) at unix,mime
Date: 30/07/01 20:19
>I'm interested in this library, and if help is needed I'll lend what
>ever time I can spare. My comments on the document:
Thanks. All help is greatly appreciated.
>* Exceptions should not be used for precondition violations.
>Assertions and/or error returns should be used instead in this
Why? I would not be inclined to use error returns for precondition
violation. I've not seen much of a discussion of assertion v
exceptions, however, I would be inclined to use assertions for
static preconditions and would prefer to generate a compile time
error. But for dynamic preconditions I owuld use an exception so
that the user can take some recovery action.
>* One thing I often see done wrong when it comes to "reducing
>preconditions" is overloading methods that connect a socket for
>numerous ways of specifying the address/port pair. There should be
>two seperate object types, InetAddress and InetPort (pick your name
>for these) that can be constructed with the various options such as
>URL, IP, friendly name, etc. The connection routines should only
>take these as parameters. This vastly simplifies much of the user
>coding, as well as maintenance required if some new way of
>specifying these comes into existence later.
I had planned to have an address type but I'm not sure that we need a
port type. A port is a Transport Selector and is usually an integral
type. I agree that address will be constructable in many differing
ways and that a connection would only be creatable with an address.
>* I don't think FTP, HTTP or other protocol client/server classes
>should even be considered for inclusion, at least in a first
I think these, and other applications level protocols would make a
useful addition to boost. They would need to be built ontop of the
other layer(s) and I don't plan to look to closely at them any time
in the near future. Except perhaps as examples of applications that
should be *relatively* easy to implemnt with this library.
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