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backport: bitcoin#20237, bitcoin#24417, bitcoin#24864, bitcoin#25911, bitcoin#29561 - #7925
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6866259 net: Hardcoded seeds update for 0.21 (Wladimir J. van der Laan) 36e875b contrib: Add new versions to makeseeds.py and update gitignore (RandyMcMillan) Pull request description: Stats: ``` IPv4 IPv6 Onion Pass 426728 59523 7900 Initial 426728 59523 7900 Skip entries with invalid address 426728 59523 7900 After removing duplicates 426727 59523 7900 Skip entries from suspicious hosts 123226 51785 7787 Enforce minimal number of blocks 121710 51322 7586 Require service bit 1 4706 1427 3749 Require minimum uptime 4124 1098 3681 Require a known and recent user agent 4033 1075 3681 Filter out hosts with multiple bitcoin ports 512 140 512 Look up ASNs and limit results per ASN and per net ``` I've credited RandyMcMillan for the first commit because of bitcoin#20190. There are at least enough onions this time! Number of IPv6 nodes that pass all the requirements seems similar to last time in bitcoin#18506. For the next major release we'll want TORv3 hardcoded peers as well. This makes no sense now as there are hardly any. But it'd make sense to think about how to collect them because they cannot come from the DNS seeds. ### Reviewing ``` 2020-10-28 12:04:45 jnewbery wumpus: Do you have any suggestions for how to review bitcoin#20237 ? 2020-10-28 12:28:37 wumpus jnewbery: previous PRs like it might be a guide there (bitcoin#18506, bitcoin#16999), e.g. people could try to repeat the last step in https://github.com/bitcoin/bitcoin/tree/master/contrib/seeds#seeds and see if it ends up with the same .h file, you could also repeat the entire process but as the list of peers from the seeder will be different every time that will give a (slightly, hopefully) 2020-10-28 12:28:37 wumpus different output 2020-10-28 12:49:40 wumpus testing what part of the peers are connectable is also useful 2020-10-28 12:51:05 wumpus or to go deeper, whether most part of the nodes are 'good nodes' and not say spy nodes, but i don't know what means of testing ``` ACKs for top commit: jonatack: ACK 6866259 Tree-SHA512: 6b913ec92932de03304301a0cbf7b4a912ed09d890b019deeb449b8fa787c4994222368c6bf08b3c6e2bfa474442612e1c9de9327ec46ba59c37a5f38af50c75 Dash adaptations: - contrib/seeds/.gitignore: ignores Dash's intermediate input protx_list.json (per contrib/seeds/README.md) instead of Bitcoin's crawler dump seeds_main.txt, which Dash's workflow never creates Not applicable to Dash (intentionally omitted): - contrib/seeds/makeseeds.py: edits PATTERN_AGENT (/Satoshi: versions); Dash's makeseeds.py builds seeds from `protx list valid` JSON and has no user-agent filter - contrib/seeds/nodes_main.txt: Bitcoin mainnet node list on port 8333; Dash keeps its own masternode-derived seed list, regenerated at its own releases - src/chainparamsseeds.h: generated from Bitcoin's nodes_main.txt; Dash's header is generated from its own seed lists
d80dc12 net: Update hardcoded seeds for 23.x (laanwj) 9f27157 contrib: make-seeds updates for 23.x (laanwj) Pull request description: Update hardcoded P2P network seeds for 23.x, and update the generation script and documentation as necessary Tool output: ``` IPv4 IPv6 Onion Pass 469910 72944 0 Initial 469910 72944 0 Skip entries with invalid address 469910 72944 0 After removing duplicates 469909 72944 0 Skip entries from suspicious hosts 165760 65113 0 Enforce minimal number of blocks 160668 63183 0 Require service bit 1 4951 1376 0 Require minimum uptime 4406 1051 0 Require a known and recent user agent 4307 1031 0 Filter out hosts with multiple bitcoin ports ERR: Could not resolve ASN for "2001:678:7dc:8::2": The DNS query name does not exist: 8.0.0.0.c.d.7.0.8.7.6.0.1.0.0.2.origin6.asn.cymru.com. 512 134 0 Look up ASNs and limit results per ASN and per net ```. ACKs for top commit: achow101: ACK d80dc12 jonatack: ACK d80dc12 reviewed the changes and ran the README steps Tree-SHA512: c651b0501cc28d397cc0778eff6aed4273669082d6ef207ce58ce198b443be66532bf1e8d618ccae3ba671ae4cccfd9b4dd2dfebacc97f3c3bd4e9fa58a3d7a3 Dash adaptations: - contrib/seeds/makeseeds.py: the improved ASN-lookup error message lands in Dash's resolveasn() (Dash's name for lookup_asn), where `ip` is a dict, so the f-string prints the dict - contrib/seeds/makeseeds.py: the PATTERN_ONION v3 change needs no edit; Dash's script already matches 56-char v3 onions Not applicable to Dash (intentionally omitted): - contrib/seeds/makeseeds.py: PATTERN_AGENT /Satoshi: version bump; Dash's makeseeds.py builds seeds from `protx list valid` JSON and has no user-agent filter - contrib/seeds/README.md: edits the sipa.be curl + nodes_main_manual.txt steps; Dash's README documents its protx-list/onion_seeds.txt workflow instead - contrib/seeds/nodes_main.txt: Bitcoin mainnet node list on port 8333; Dash keeps its own masternode-derived seed list, regenerated at its own releases - contrib/seeds/nodes_main_manual.txt: Bitcoin's manual torv3/I2P/CJDNS bootstrap nodes (port 8333); Dash's counterpart is contrib/seeds/onion_seeds.txt, fed to makeseeds.py - src/chainparamsseeds.h: generated from Bitcoin's nodes_main.txt; Dash's header is generated from its own seed lists
667e316 contrib: Update makeseeds to asmap-nextgen (laanwj) ae00b9e contrib: add seeds progress indicator and remove asmap one in makeseeds script (Jon Atack) b541803 contrib: Use asmap for ASN lookup in makeseeds (laanwj) Pull request description: 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 bitcoin#24824. I've removed 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: russeree <reese.russell@ymail.com> ACKs for top commit: sipa: ACK 667e316 dunxen: re-ACK 667e316 Tree-SHA512: c4cedfbd1dee6be7547aa92dd9e262c46f0ff8099e647559b2a40eab0cc9874e9a813706630dd5c880390d23f432e789fb3e7e8a09f376f567071e68f5904c65 Dash adaptations: - contrib/seeds/.gitignore: adds asmap-filled.dat next to Dash's protx_list.json; Dash never ignored seeds_main.txt so that context line is not added - contrib/seeds/README.md: Dash's protx-list instructions gain the asmap-filled.dat download and the -a flag; dnspython Dependencies section removed as upstream does - contrib/seeds/makeseeds.py: Dash's parallel resolveasn() and its dns.resolver/multiprocessing Pool setup are replaced by the asmap lookup (multiprocessing import dropped, now unused) - contrib/seeds/makeseeds.py: argparse also declares Dash's optional positional protx_list and onion_seeds args, which used to be read from sys.argv[1]/[2] - contrib/seeds/makeseeds.py: upstream's 'Loading and parsing DNS seeds…' message is left out; Dash reads protx JSON and already prints its own load counts Not applicable to Dash (intentionally omitted): - contrib/seeds/makeseeds.py: upstream's whitespace fix to `return None` in parseline(); Dash's parseip() reads protx JSON and has no such line
9b6f5fa net: update hardcoded mainnet seeds for 24.x (Jon Atack) 7fd9028 contrib: make-seeds updates for 24.x (Jon Atack) 6075a0b net: update manual hardcoded mainnet seeds for 24.x (Jon Atack) Pull request description: Update the hardcoded P2P network seeds for 24.x after updating the manual seeds and the generation script as necessary. Previous update was bitcoin#24417. Can be tested by following the steps in `contrib/seeds/README.md`. Tool output: ``` $ python3 makeseeds.py -a asmap-filled.dat < seeds_main.txt > nodes_main.txt Loading asmap database "asmap-filled.dat"…Done. Loading and parsing DNS seeds…Done. IPv4 IPv6 Onion Pass 472019 73788 0 Initial 472019 73788 0 Skip entries with invalid address 472019 73788 0 After removing duplicates 7766 2310 0 Enforce minimal number of blocks 6534 1835 0 Require service bit 1 2808 801 0 Require minimum uptime 2748 781 0 Require a known and recent user agent 2727 775 0 Filter out hosts with multiple bitcoin ports 512 267 0 Look up ASNs and limit results per ASN and per net ``` ACKs for top commit: laanwj: LGTM ACK 9b6f5fa Emzy: ACK 9b6f5fa brunoerg: ACK 9b6f5fa Tree-SHA512: eef994bbd60524cfd9e4b5b836ddbe615cd2a77466394cdbb70a0ebc30c7822d8605473424f6d4a1ba37313c59373cf10717977a5c07e6f839e5ff86464c8c55 Dash adaptations: - contrib/seeds/makeseeds.py: takes the copyright bump and the alphabetical move of `import collections`; Dash's extra `import json` stays where it was Not applicable to Dash (intentionally omitted): - contrib/seeds/makeseeds.py: PATTERN_AGENT /Satoshi: version bump (23.0, 24.99); Dash's makeseeds.py builds seeds from `protx list valid` JSON and has no user-agent filter - contrib/seeds/nodes_main.txt: Bitcoin mainnet node list on port 8333; Dash keeps its own masternode-derived seed list, regenerated at its own releases - contrib/seeds/nodes_main_manual.txt: Bitcoin's manual torv3/I2P/CJDNS nodes on port 8333; Dash's counterpart, contrib/seeds/onion_seeds.txt, lists Dash nodes and isn't updated with Bitcoin addresses - src/chainparamsseeds.h: Generated from Bitcoin's nodes_main.txt; Dash's header is generated from its own seed lists
7ab5439 seeds: Update testnet seeds (Ava Chow) 34a233b seeds: Update mainnet seeds (Ava Chow) 9701bc4 makeseeds: Check i2p seeds too (Ava Chow) a8ec9ee makeseeds: Update PATTERN_AGENT (Ava Chow) Pull request description: The ipv4 and ipv6 seeds are updated from sipa's crawler, as outlined in contrib/seeds/README.md. The onion and i2p seeds are pulled from my node's addrman using `getrawaddrman` and then a connection was made to each node to retrieve the current service flags, block height, and user agent string before filtering through makeseeds.py. The CJDNS nodes were not updated as my node is not connected to that network. makeseeds.py is also updated for more recent user agent strings as well as being able to handle i2p addresses. Also updated the testnet seeds. ACKs for top commit: fanquake: ACK 7ab5439 Tree-SHA512: 5edba63d51116e5d9a8ae23561ba5a311f4df88c555c60b2d7a6066e63f8cdfd256be7dac9acea4b370879d0d3c3a4b55328c15de4284b5f0d86e6cac2e5ba9b Dash adaptations: - contrib/seeds/makeseeds.py: I2P address matching goes into Dash's parseip(ip_in) rather than upstream's parseline(), so it reads ip_in instead of sline[0] - contrib/seeds/makeseeds.py: I2P entries reach Dash's script through the onion_seeds.txt input, which every line of is passed to parseip(); no new input path was added Not applicable to Dash (intentionally omitted): - contrib/seeds/makeseeds.py: PATTERN_AGENT /Satoshi: bump (25.0/25.1, 26.0/26.99); Dash's makeseeds.py builds seeds from `protx list valid` JSON and has no user-agent filter - contrib/seeds/makeseeds.py: 'i2p' entry in the req_uptime dict; Dash's script has no uptime filter because masternode inputs carry no uptime data - contrib/seeds/nodes_main.txt: Bitcoin mainnet node list on port 8333; Dash keeps its own masternode-derived seed list, regenerated at its own releases - contrib/seeds/nodes_main_manual.txt: Bitcoin's manual torv3/I2P/CJDNS nodes; Dash's counterpart, contrib/seeds/onion_seeds.txt, lists Dash nodes and isn't updated with Bitcoin addresses - contrib/seeds/nodes_test.txt: Bitcoin testnet node list; Dash maintains its own testnet seeds - src/chainparamsseeds.h: Generated from Bitcoin's nodes_main.txt/nodes_test.txt; Dash's header is generated from its own seed lists
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WalkthroughThe change adds an ASMap module that converts IP prefixes and ASN mappings to and from the binary format. Priority: ⬇️ Low Estimated code review effort: 4 (Complex) | ~45 minutes Sequence Diagram(s)sequenceDiagram
participant CLI as makeseeds.py
participant Map as ASMap
participant Output as Seed output
CLI->>Map: Load ASMap binary
CLI->>Map: Look up IPv4 and IPv6 prefixes
Map-->>CLI: Return ASN assignments
CLI->>Output: Emit accepted IP, onion, and I2P entries
Merge Risk: 🔵 Low · up to
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| Check name | Status | Explanation | Resolution |
|---|---|---|---|
| Docstring Coverage |  |
Docstring coverage is 64.41% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 59 functions across 2 files. (2 skipped: … | Write docstrings for the functions missing them to satisfy the coverage threshold. |
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Check name Status Explanation Linked Issues check Check skipped because no linked issues were found for this pull request. Out of Scope Changes check Check skipped because no linked issues were found for this pull request. Title check The title clearly identifies the five Bitcoin Core pull requests being backported, which matches the main purpose of the changeset. Description check The description clearly explains the five backported Bitcoin Core changes, their Dash-specific adaptations, omitted Bitcoin-only changes, and reported testing. It directly matches the changeset.
Full details: Docstring Coverage
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Docstring coverage is 64.41% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 59 functions across 2 files. (2 skipped: 2 unsupported.)
Resolution
Write docstrings for the functions missing them to satisfy the coverage threshold.
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Review comments at @contrib/seeds/makeseeds.py:
- Around line 165-167: Check the result of ASMap.from_binary() in main() before
printing “Done.” or passing the map to filterbyasn(); if it returns None, report
that args.asmap is invalid and exit with a nonzero status.
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| else: | ||
| net = 'i2p' | ||
| ipstr = sortkey = m.group(1) | ||
| port = int(m.group(2)) |
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When an I2P entry in the newly accepted manual seed input uses a nonzero port (for example the :9999 convention used throughout the existing onion_seeds.txt), this assignment preserves that port in nodes_main.txt. The checked fixed-seed connection path then reaches Session::Connect, which rejects every I2P service whose port differs from zero (src/i2p.cpp:219-227, with I2P_SAM31_PORT defined as 0 in src/netaddress.h:105-106), so the generated seed is guaranteed to be unusable; reject such a line or normalize it to port 0.
AGENTS.md reference: AGENTS.md:L199-L204
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The backport matches upstream: bitcoin#29561 added I2P parsing to parseip() with port = int(m.group(2)), and our copy is identical. The script taking a manual seed file is older than this branch, so rejecting or normalising I2P ports is a change to upstream's design, not a backport error.
🤖 backportsys, on behalf of the Dash backport pipeline.
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Final validation — Phase 1 + Phase 2
Static verification of edf98c5..a9adc47 found no actionable backport or Dash-adaptation defects: the ASN and I2P changes match upstream while preserving Dash's masternode filtering and downstream seed serialization. The two discussed input-validation concerns are inherited upstream behavior, not backport defects. Current CI reports successful builds, lint, and ordinary Linux tests, with multiprocess, ASan, and TSan tests still pending; no builds or tests were run locally.
Review provenance
Source: reviewer 1: gemini-3.8-flash-high (agent: phase1-reviewer, role: general); reviewer 2: gpt-6.1-sol (agent: phase2-reviewer, role: general); reviewer 3: gpt-6.1-sol (agent: phase2-reviewer, role: backport-reviewer); reviewer 4: gpt-6.1-sol (agent: phase2-reviewer, role: dash-core-commit-history); final verifier: gpt-6.1-sol (agent: sol-verifier, role: final-verifier)
- Triage:
normalbygpt-6.1-sol(effort low) — The changes add substantial ASN mapping logic and adapt seed-generation tooling, but do not modify consensus, funds handling, cryptography, peer-facing network deserialization, or storage migrations. - Phase 1 reviewers:
gemini-3.8-flash-high— general (completed, effort high); agentphase1-reviewer - Phase 1 model:
gemini-3.8-flash-high— antigravity quota: weekly 71% left, 5h 100% left - Fresh verifier:
gpt-6.1-sol— final-verifier; agentsol-verifier - Phase 2 reviewers:
gpt-6.1-sol— general (completed, effort high); agentphase2-reviewer,gpt-6.1-sol— backport-reviewer (completed, effort high); agentphase2-reviewer,gpt-6.1-sol— dash-core-commit-history (completed, effort high); agentphase2-reviewer
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Hands off persists after its box clears: no automated branch updates until operator release (not tracker Release hold). Close abandons the batch and releases its items. Adaptation and gatesHeavy: substantial adaptation; light: at most two invented lines (six counting functional-test/doc edits); faithful: identical to upstream apart from context. Mechanical checks compare upstream hunks, added lines and Dash-specific lines. Review warnings before merging.
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bitcoin#24864 (merged in #7925) also reworded the README intro to say the commands run from contrib/seeds and added a progress line while the input list is read. Both hunks were dropped because the input there is the DNS seeds dump, which Dash replaced by the protx list; this applies them to the protx list.
Issue being fixed or feature implemented
Backports 5 Bitcoin Core v0.27 pull request(s) to Dash.
What was done?
net: Hardcoded seeds update for 0.21 bitcoin/bitcoin#20237 — net: Hardcoded seeds update for 0.21.
Upstream: net: Hardcoded seeds update for 0.21 bitcoin/bitcoin#20237 (merge 95bde34). Dash commit: 235522b.
Only the new contrib/seeds/.gitignore is backported, and it ignores Dash's seed-generation input protx_list.json (made by the command in Dash's contrib/seeds/README.md) instead of Bitcoin's seeds_main.txt. The rest of the upstream PR is not for Dash: it refreshes Bitcoin's seed IPs and generated header and bumps a user-agent regex that Dash's protx-based makeseeds.py doesn't have.
Dash adaptations:
Not applicable to Dash (intentionally omitted):
protx list validJSON and has no user-agent filternet: Update hardcoded seeds for 23.x bitcoin/bitcoin#24417 — net: Update hardcoded seeds for 23.x.
Upstream: net: Update hardcoded seeds for 23.x bitcoin/bitcoin#24417 (merge b71a077). Dash commit: 9082abc.
Backports the only Dash-relevant code change from net: Update hardcoded seeds for 23.x bitcoin/bitcoin#24417: lookup_asn's improved error message, applied to Dash's resolveasn (Dash already had the v3 PATTERN_ONION regex). The Bitcoin seed data (nodes_main.txt, nodes_main_manual.txt, chainparamsseeds.h), the PATTERN_AGENT version list and the sipa-based README steps do not apply to Dash, whose seeds come from its protx list and onion_seeds.txt.
Dash adaptations:
ipis a dict, so the f-string prints the dictNot applicable to Dash (intentionally omitted):
protx list validJSON and has no user-agent filtercontrib: Use asmap for ASN lookup in makeseeds bitcoin/bitcoin#24864 — contrib: Use asmap for ASN lookup in makeseeds.
Upstream: contrib: Use asmap for ASN lookup in makeseeds bitcoin/bitcoin#24864 (merge 7f2c983). Dash commit: 07009a5.
Backports contrib: Use asmap for ASN lookup in makeseeds bitcoin/bitcoin#24864: makeseeds.py now looks up ASNs from a local asmap file (via the new, identical contrib/seeds/asmap.py) instead of cymru DNS queries, and the change is adapted to Dash's protx-list-based script, whose own parallel DNS resolver it removes and whose file arguments it converts to argparse positionals. The README and .gitignore are updated for the asmap-filled.dat workflow, the dnspython dependency is dropped, and the only upstream hunks left out (a parseline() indentation fi
Dash adaptations:
Not applicable to Dash (intentionally omitted):
return Nonein parseline(); Dash's parseip() reads protx JSON and has no such linenet: update hardcoded mainnet seeds for 24.x bitcoin/bitcoin#25911 — net: update hardcoded mainnet seeds for 24.x.
Upstream: net: update hardcoded mainnet seeds for 24.x bitcoin/bitcoin#25911 (merge 1420547). Dash commit: a7e34cc.
Brings over the only parts of the upstream makeseeds.py change that apply to Dash: the copyright bump and the reordered import. The PATTERN_AGENT bump and Bitcoin's regenerated seed data (nodes_main.txt, nodes_main_manual.txt, chainparamsseeds.h) are left out because Dash builds its seeds from its own masternode list.
Dash adaptations:
import collections; Dash's extraimport jsonstays where it wasNot applicable to Dash (intentionally omitted):
protx list validJSON and has no user-agent filterFixed seeds update for 27.0 bitcoin/bitcoin#29561 — Fixed seeds update for 27.0.
Upstream: Fixed seeds update for 27.0 bitcoin/bitcoin#29561 (merge 55bd5d8). Dash commit: a9adc47.
Backports the makeseeds.py I2P support from Fixed seeds update for 27.0 bitcoin/bitcoin#29561 (pattern, parser branch, per-net limit in filterbyasn, stats column and header), with sline[0] changed to ip_in for Dash's parseip. The PATTERN_AGENT bump and the i2p uptime threshold target filters that Dash replaced with protx-based masternode filtering, and Bitcoin's regenerated node lists and chainparamsseeds.h are not for Dash, following the earlier net: update hardcoded mainnet seeds for 24.x bitcoin/bitcoin#25911 seeds backport.
Dash adaptations:
Not applicable to Dash (intentionally omitted):
protx list validJSON and has no user-agent filterHow Has This Been Tested?
Breaking Changes
None beyond the upstream changes themselves.
Checklist: