RFC: Drop notice: KNetwork

[Thiago Macieira]

Andreas Aardal Hanssen wrote:
>I think you can implement Multicast by subclassing QUdpSocket. If not,
> we can always do it. Is it a requirement from existing (KDE3)
> applications?

All you need in order to implement multicast sockets is an UDP socket, 
plus the ability to join/leave groups and set the flag if you want to 
receive your own packets.

Easier said than done: you need a sockaddr structure in order to join 
groups and you join via low-level setsockopt. Sockaddr by itself has the 
issue of containing sa_len (BSD-style) or not (other), plus the fact that 
it can be IPv4 or IPv6. Next, the low-level calls depend on the system 
availability, etc. At least the network interface ID can be obtained from 
QNetworkInterface, as well as the address.

In sum: this is the exact kind of task that Qt is great at abstracting and 
providing an easy, portable interface :-)

-- 
  Thiago Macieira  -  thiago (AT) macieira.info - thiago (AT) kde.org
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