Re: Boost Socket Library - Design Questions

From: dmoore99atwork (dmoore_at_[hidden])
Date: 2002-01-23 07:59:08

> 
> I suppose you could use a char buffer whose size equals to sizeof
> (wrapped_type):
> 
> class socket_address {
> public:
>   socket_address();
> private:
>   // say, sizeof( sockaddr_in ) == 64
>   char buf_[ 64 ];
> };
> 
> D.P.
> 

I would be pretty comfortable taking this approach if everyone was in 
agreement that we were just targetting IPv4 and IPv6, because the 
sizes of the in_addr, in6_addr, sockaddr_in, and sockaddr_in6 are 
somewhat spelled out in various RFC documents.

Actually, since the sockets library (at least my design) requires 
a "platform" class as a facade for the plaform specific stuff, we 
might be able to encode the struture sizes in that class...

class socket_platform
{
#ifdef BOOST_WEIRD_ADDRESS_SIZE
  static const size_t addr_size=46;
#else
  static const size_t addr_size=16;
#endif
};

This could also be part of a "protocol_traits" class, which is 
something else I'm toying with.

Thanks for the feedback,
Dave