[tahoe-lafs-trac-stream] [Tahoe-LAFS] #2788: add connection-policy configuration

[Tahoe-LAFS]

#2788: add connection-policy configuration
------------------------------+-----------------------
     Reporter:  warner        |      Owner:
         Type:  enhancement   |     Status:  new
     Priority:  normal        |  Milestone:  undecided
    Component:  code-network  |    Version:  1.11.0
   Resolution:                |   Keywords:
Launchpad Bug:                |
------------------------------+-----------------------

Comment (by warner):

 I'm reading through the [https://github.com/toml-lang/toml TOML spec]. If
 we make "servers" into a list, with the pubkey as a dictionary item
 (instead of a key), then I our example would look like this:

 {{{
 [[servers]]
 id = "v0-c2ng2pbrmxmlwpijn3mr72ckk5fmzk6uxf6nhowyosaubrt6y5mq"
 nickname = "foo" # comments ok!
 anonymous-storage-FURL =
 "pb://u33m4y7klhz3bypswqkozwetvabelhxt@tcp:10.1.2.3:51298/eiu2i7p6d6mm4ihmss7ieou5hac3wn6b"
 permutation-seed-base32 = "w2hqnbaa25yw4qgcvghl5psa3srpfgw3"
 [[servers.connections]]
 tcp = { handler = "tcp" }

 [[servers]]
 # second server definition

 [[introducers]]
 nickname = "nick1"
 furl =
 "pb://u33m4y7klhz3bypswqkozwetvabelhxt@tor:abcdef.onion:80/eiu2i7p6d6mm4ihmss7ieou5hac3wn6b"
 [[introducers]]
 nickname = "nick2"
 furl =
 "pb://u33m4y7klhz3bypswqkozwetvabelhxt@tcp:example.org:12345/eiu2i7p6d6mm4ihmss7ieou5hac3wn6b"

 [global.connection_types]
 tcp = {handler = "tor", control_endpoint = "tcp:localhost:9051"}
 tor = {handler = "tor", control_endpoint = "tcp:localhost:9051"}
 }}}

 Some notes:

 * all value strings (as opposed to keys) must be quoted. There are python-
 style triple quotes for multiline strings, and perl-style single quotes
 for raw strings (no escape processing)
 * key strings don't need quotes if they stick to a-z A-Z hyphen underscore
 * lists of dicts use the repeated-double-square-bracket syntax
 demonstrated in the `servers` and `introducers` sections
 * nested dicts can either be done with `[foo.bar.baz]` indicators, or with
 the inline `{key = { subkey = "value"} }` syntax (which can be spread over
 multiple lines, like in python)
 * trailing commas in lists and inline dicts are ok
 * comments are ok
 * TOML provides strings, integers, floats, booleans (lowercase),
 datetimes, and arrays (square brackets). Since all strings require
 quoting, it's easy to tell the different between `"1.4"` (string) and
 `1.4` (float).

--
Ticket URL: <https://tahoe-lafs.org/trac/tahoe-lafs/ticket/2788#comment:8>
Tahoe-LAFS <https://Tahoe-LAFS.org>
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