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101 lines
3.6 KiB
Markdown
101 lines
3.6 KiB
Markdown
Doing development can be a messy process. Since Urbit ships are meant to
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last forever it can be convenient to development on a disposable ship as
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to not permanently destroy any of your own part of the urbit network. In
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this short guide we're going to go over how to set up a fake network for
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development on a single physical machine.
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This guide assumes that you have already followed the [setup
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instructions](). Going forward we'll refer to the directory you cloned
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the repo in as `/$URB_DIR`.
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1.
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Start a fake `vere` for the carrier `~zod`.
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In `/$URB_DIR`, run
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$ bin/vere -F -I ~zod -c zod
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This will boot `vere` into the carrier `~zod`. Because we're using the
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flag `-F` `vere` doesn't check any of the keys to confirm that we are in
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fact the owner of `~zod`. We use `-I` here to signal to `vere` that we
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want to start an 'imperial' ship, or carrier. `-I` takes a ship name.
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You can enter any one of the 256 Urbit carriers. More information on
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`vere` and its command line options can be found [here]().
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You should see `vere` start as usual, although instead of copying its
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files from a parent ship the files are copied from `urb/zod` inside your
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Urbit directory.
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For most development tasks, using a fake carrier works really well. You
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get a very short name, and a safe testing environment. If you need to
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test out a collection of ships talking to each other, let's keep going.
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2.
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Start a second fake `vere`.
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In a new terminal, cd to `/$URB_DIR` and run:
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$ bin/vere -F -c doznec
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Since we don't specify a carrier with `-I` here, this should boot into a
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submarine, as if you had started vere normally. In your running fake
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`~zod` you should see a [`~&`]() alerting you that the sub you just
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started is your neighbor. This means that a key exchange has happened,
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and your packets are being transmitted directly. Now, let's get a ticket
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for a cruiser.
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In your fake `~zod`, ticket a cruiser:
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~zod/try=> :ticket ~doznec
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This line should return a `[ship: ticket]` pair of [`@p`](). You can Now
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you can return to your submarine and run:
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~sipmyl-wolmeb-haswel-losmyl--dibten-holdyn-dacdyn-natsep/try=> :begin
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Use the `[ship: ticket]` pair you got from your fake `~zod` to complete
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the `:begin` process for `~doznec`. When finished you should see
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something like `; ~doznec _doz_ is your neighbor` on your fake `~zod`.
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You can repeat this process on `~doznec`, ticketing destroyers that are
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children of `~doznec` by running `:ticket` with a valid destroyer.
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`:ticket` actually takes two arguments, a ship name and a number
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indicating how many tickets to generate. `~tasfyn-partyv` is the first
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destroyer under `~doznec`, so you can run `:ticket ~tasfyn-partyv 5` to
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get five `[ship: ticket]` pairs.
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3.
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Add some files, make sure the network if functioning.
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You should now have a directory `/$URB_DIR/zod`.
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In
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/$URB_DIR/zod/zod/try/test.txt
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Put
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hello from mars
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You should see a sync event on `~zod` indicated by a `+` with the file
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path, and at least one `%merge-fine` messages on `~doznec`. On your
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filesystem, you should see the file mirrored in
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`/$URB_DIR/doznec/doznec/try/test.txt`.
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You can also send a few `:hi` messages over the network. On `~doznec`
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try:
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~doznec/try=> :hi ~zod "just checking in from urth"
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You should see the message appear on your `~zod` and get a
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`hi ~zod successful` on your `~doznec`.
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This is a good way to set up a test environment where you can try
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anything out and break anything you want. When working in these test
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environments it is usually safest to keep your working files outside of
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your pier and copy them in. This way you can quickly
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`rm -rf zod/ && bin/vere -F -I ~zod -c zod` to start again.
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