This removes the section that describes automatic configuration using
transport-agnostic endpoint-centric tub.port strings. That was the
approach where tub.port used "onion:80:hiddenServiceDir=PATH", and
Foolscap was able to query the generated Listener to find out what
address it was supposed to advertise. We considered this for a long
time, but in the end decided to use a more static approach, where
foolscap/tahoe never try to guess it's location: Tahoe always requires
tub.location= to be set.
When we get automatic configuration implemented, it'll be a simple CLI
argument, something like "tahoe create-server --listen=tor".
Instead, this document now explains how to configure Tor to create the
hidden service, then how to copy the generated .onion address into the
tahoe config.
This also removes a lot of other text that seems irrelevant now, and
refers the user to the tahoe.cfg docs (configuration.rst) instead of
including all the `[tor]`/`[i2p]` docs inline.
Closes ticket:2815
Updated config docs. Added errors if we're not listening but were told
to enable storage, helper, or if we're the Introducer server.
closes ticket:2816
Foolscap has limitations that prevent us from accepting anything but a
TCP endpoint, but that will change in the future, so make the tahoe.cfg
syntax accept an endpoint, but then reject non-TCP ones. See the ticket
for details: refs ticket:2813.
This depends upon the new `foolscap.connections.tor.socks_port(host,
port)` API in foolscap-0.12.2, so it bumps the dependency to that (the
previous commit depended upon 0.12.1, but I hadn't gotten around to
updating the dep before now).
* tub.port should be an endpoint
* web.port should be a strports string (with "tcp:" prefix)
* tub.location should include "tcp:" hint types
* FURL hints should include "tcp:" hint types
