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Support service bit filtering #50

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cloudhead opened this issue Sep 18, 2021 · 0 comments
Open

Support service bit filtering #50

cloudhead opened this issue Sep 18, 2021 · 0 comments
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good first issue Good for newcomers help wanted Extra attention is needed

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@cloudhead
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To have a higher chance to connect to peers with NODE_COMPACT_FILTERS support, we could use the service bit filtering functionality of DNS seeds.

This is not a very well documented feature, but there is some information here:
https://bitcoin.stackexchange.com/questions/60373/dns-seeder-options

The filter we'd be interested in is NODE_NETWORK | NODE_COMPACT_FILTERS, so 1 << 0 | 1 << 6 = 65.

Since not all seeds support this functionality, we should fall back on a regular DNS query if we're unable to retrieve addresses from the seeds.
@cloudhead cloudhead added help wanted Extra attention is needed good first issue Good for newcomers labels Sep 18, 2021
This was referenced Sep 28, 2021
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