[tahoe-lafs-trac-stream] [Tahoe-LAFS] #2773: `tahoe create-node` should require `--location` and/or `--hostname`, and not autodetect

[Tahoe-LAFS]

#2773: `tahoe create-node` should require `--location` and/or `--hostname`, and
not autodetect
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     Reporter:  warner          |      Owner:  warner
         Type:  task            |     Status:  assigned
     Priority:  normal          |  Milestone:  1.13.0
    Component:  code-nodeadmin  |    Version:  1.11.0
   Resolution:                  |   Keywords:
Launchpad Bug:                  |
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Comment (by warner):

 The first step is probably to change the create-node functions to be
 async, which means changing `runner.py` to accept a Deferred back from the
 dispatch function, and spin up a reactor, and wait for the Deferred to
 finish before shutting it down and returning the exit code. Twisted has a
 utility for this `twisted.internet.task.react()`, which I'm using in
 magic-wormhole, although it calls `sys.exit(rc)` itself, so we might only
 want to use it in the run-by-human=true path.

 Second step is to add --location/--port. Third is to add --listen=tcp.
 Fourth is to implement --listen=tor or i2p.

 Although we could put off the async create-node until just before
 implementing --listen=tor, because we've got a synchronous
 `allmydata.util.iputil.allocate_tcp_port()`.

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Ticket URL: <https://tahoe-lafs.org/trac/tahoe-lafs/ticket/2773#comment:11>
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