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laanwj b54180303d contrib: Use asmap for ASN lookup in makeseeds

Add an argument `-a` to provide a asmap file to do the IP to ASN
lookups.

This speeds up the script greatly, and makes the output deterministic.
Also removes the dependency on `dns.lookup`.

I've annotated the output with ASxxxx comments to provide a way to
verify the functionality.

For now I've added instructions in README.md to download and use the
`demo.map` from the asmap repository. When we have some other mechanism
for distributing asmap files we could switch to that.

This continues #24824. I've removed all the fallbacks and extra
complexity, as everyone will be using the same instructions anyway.

Co-authored-by: Pieter Wuille <pieter.wuille@gmail.com>
Co-authored-by: James O'Beirne <james.obeirne@pm.me>
Co-authored-by: russeree <reese.russell@ymail.com>

2022-05-31 11:57:49 +02:00

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Seeds

Utility to generate the seeds.txt list that is compiled into the client (see src/chainparamsseeds.h and other utilities in contrib/seeds).

Be sure to update PATTERN_AGENT in makeseeds.py to include the current version, and remove old versions as necessary (at a minimum when GetDesirableServiceFlags changes its default return value, as those are the services which seeds are added to addrman with).

The seeds compiled into the release are created from sipa's DNS seed and AS map data. Run the following commands from the /contrib/seeds directory:

curl https://bitcoin.sipa.be/seeds.txt.gz | gzip -dc > seeds_main.txt
curl https://bitcoin.sipa.be/asmap-filled.dat > asmap-filled.dat
python3 makeseeds.py -a asmap-filled.dat < seeds_main.txt > nodes_main.txt
cat nodes_main_manual.txt >> nodes_main.txt
python3 generate-seeds.py . > ../../src/chainparamsseeds.h

944 B Raw Blame History

Seeds

944 B

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