From: Mark Wooding <mdw@distorted.org.uk>
Date: Sat, 16 Sep 2017 14:30:42 +0000 (+0100)
Subject: server/: Institute `address family table'; contemplate multiple sockets.
X-Git-Tag: 1.5.0~41^2~28
X-Git-Url: https://git.distorted.org.uk/~mdw/tripe/commitdiff_plain/5d06f63eaa34a4bf0e116f3e2a1e4ef4e6434224?hp=5d06f63eaa34a4bf0e116f3e2a1e4ef4e6434224

server/: Institute `address family table'; contemplate multiple sockets.

This is a slightly oddly-shaped change which lays important groundwork
for the future.

  * Firstly, it creates a table of address families, currently not very
    interestingly since there's only one, but this will be an essential
    tool for adding IPv6 support later.

  * Secondly, it turns the peer module's `sock' into a global vector
    `udpsock' of UDP sockets, possibly one for each of the supported
    address families.  There's no real change here, because there's only
    one address family known, but the `port' command has grown an
    address-family argument in case they have different ports.  To make
    this work, each peer now keeps track of the index of the socket it
    should use for transmitting messages.
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