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312021-02-12T02:16:04 <bitcoin-git> [bitcoin] fanquake opened pull request #21159: test: fix sign comparison warning in socket tests (master...sign_compare_sock_tests) https://github.com/bitcoin/bitcoin/pull/21159
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832021-02-12T09:49:03 <bitcoin-git> [bitcoin] laanwj pushed 6 commits to master: https://github.com/bitcoin/bitcoin/compare/937dfa839873...8d82eddee640
842021-02-12T09:49:04 <bitcoin-git> bitcoin/master a1fccea Fabian Jahr: refactor: Improve encapsulation between MuHash3072 and Num3072
852021-02-12T09:49:05 <bitcoin-git> bitcoin/master 2474645 Fabian Jahr: refactor: Separate hash and stats calculation in coinstats
862021-02-12T09:49:05 <bitcoin-git> bitcoin/master 0d3b2f6 Fabian Jahr: rpc: Add hash_type MUHASH to gettxoutsetinfo
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892021-02-12T09:49:22 <bitcoin-git> [bitcoin] laanwj merged pull request #19145: Add hash_type MUHASH for gettxoutsetinfo (master...csi-3-muhash-rpc) https://github.com/bitcoin/bitcoin/pull/19145
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952021-02-12T10:12:31 <bitcoin-git> [bitcoin] laanwj pushed 7 commits to master: https://github.com/bitcoin/bitcoin/compare/8d82eddee640...54b66a6e5f26
962021-02-12T10:12:31 <bitcoin-git> bitcoin/master 1624e17 fanquake: build: remove duplicate visibility attribute detection
972021-02-12T10:12:32 <bitcoin-git> bitcoin/master 7cd0a69 fanquake: build: test for __declspec(dllexport) in configure
982021-02-12T10:12:33 <bitcoin-git> bitcoin/master f054a08 fanquake: build: remove AX_GCC_FUNC_ATTRIBUTE test for dllimport
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1012021-02-12T10:12:49 <bitcoin-git> [bitcoin] laanwj merged pull request #19522: build: fix building libconsensus with reduced exports for Darwin targets (master...libconsensus_visibility_clang) https://github.com/bitcoin/bitcoin/pull/19522
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1102021-02-12T10:40:10 <bitcoin-git> [bitcoin] laanwj pushed 5 commits to master: https://github.com/bitcoin/bitcoin/compare/54b66a6e5f26...9996b1806a18
1112021-02-12T10:40:10 <bitcoin-git> bitcoin/master 8e55981 fanquake: refactor: replace Boost shared_mutex with std shared_mutex in cuckoocache ...
1122021-02-12T10:40:11 <bitcoin-git> bitcoin/master 7097add fanquake: refactor: replace Boost shared_mutex with std shared_mutex in sigcache
1132021-02-12T10:40:12 <bitcoin-git> bitcoin/master 06e1d7d fanquake: build: don't build or use Boost Thread
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1162021-02-12T10:40:29 <bitcoin-git> [bitcoin] laanwj merged pull request #21064: refactor: use std::shared_mutex & remove Boost Thread (master...use_std_shared_mutex) https://github.com/bitcoin/bitcoin/pull/21064
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1252021-02-12T10:50:09 <bitcoin-git> [bitcoin] laanwj pushed 2 commits to master: https://github.com/bitcoin/bitcoin/compare/9996b1806a18...e9c037ba64dd
1262021-02-12T10:50:09 <bitcoin-git> bitcoin/master fe3e993 Dhruv Mehta: [p2p] No delay in adding fixed seeds if -dnsseed=0 and peers.dat is empty....
1272021-02-12T10:50:10 <bitcoin-git> bitcoin/master e9c037b Wladimir J. van der Laan: Merge #19884: p2p: No delay in adding fixed seeds if -dnsseed=0 and peers....
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1302021-02-12T10:50:29 <bitcoin-git> [bitcoin] laanwj merged pull request #19884: p2p: No delay in adding fixed seeds if -dnsseed=0 and peers.dat is empty (master...no-delay-fixed-peer-seeds) https://github.com/bitcoin/bitcoin/pull/19884
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1412021-02-12T11:51:13 <ariard> thinking about initial transaction broadcasting, has making our own node "amnesic" already be considered ?
1422021-02-12T11:51:31 <ariard> by "amnesic" I mean not logging in the mempool, until it's announced back by some peer
1432021-02-12T11:52:50 <ariard> I think it would be a worry rn when you broadcast chain of unconfirmed txns but with the upcoming package testmempoolaccept you might call sendrawtransaction with the whole chain
1442021-02-12T11:53:00 <ariard> to assert validity of the parents, but without rebroadcasting them
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1462021-02-12T11:53:51 <ariard> the advantage would be a privacy gain to mask a transaction origin
1472021-02-12T11:54:19 <wumpus> ariard: have you looked at #21061? i think it's a clever way to hide (re)broadcasts in the noise
1482021-02-12T11:54:21 <gribble> https://github.com/bitcoin/bitcoin/issues/21061 | [p2p] Introduce node rebroadcast module by amitiuttarwar · Pull Request #21061 · bitcoin/bitcoin · GitHub
1492021-02-12T11:56:21 <wumpus> instead of specific wallet broadcast we would broadcast anything that seems it should be mined
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1522021-02-12T11:56:41 <ariard> wumpus: ofc already reviewed the old one
1532021-02-12T11:56:53 <wumpus> okay
1542021-02-12T11:56:59 <ariard> but I don't think this approach are opposite, you might broadcast a set of transaction
1552021-02-12T11:57:12 <ariard> but not log it you mempool when someone query it with a getdata
1562021-02-12T11:57:17 <ariard> *those approaches
1572021-02-12T11:58:05 <ariard> ah no, that would be a fingerprint compared to the "noise" set of transaction, to not find a owned transaction in the mempool
1582021-02-12T11:58:38 <wumpus> i still think in practice broadcasting transactions over tor is the best approach
1592021-02-12T11:59:19 <ariard> yes, making one-shot connection over tor/i2p for transaction broadcast might be a really interesting approach
1602021-02-12T12:00:43 <wumpus> rightâone of the reasons we added -walletbroadcast=0 is to make it possible to do so with an external script (e.g. it was my idea with https://github.com/laanwj/bitcoin-submittx)
1612021-02-12T12:01:44 <wumpus> this could tunnel the transaction over anything and would even work if bitcoin core doesn't itself use tor/i2p/etc
1622021-02-12T12:01:58 <aj> ariard: aren't you redescribing dandelion?
1632021-02-12T12:02:30 <wumpus> of course it could be better automated i never really got around to that
1642021-02-12T12:03:17 <ariard> wunpus: yeah I'm back working on altnet, but will start with headers-over-dns as a first integration :)
1652021-02-12T12:03:57 <ariard> aj: hmmmm but I'm thinking with all the refactoring around tx-requester and likely the ones around tx-announcement for erlay if we can't rework a lightweight version of dandelion
1662021-02-12T12:04:31 <aj> ariard: i think we can totally do that! especially with glozow's tx-package testmempoolaccept stuff
1672021-02-12T12:04:33 <ariard> because IIRC the blocker for dandelion was mostly an implementation concern about its DoS robustness
1682021-02-12T12:07:47 <sdaftuar> i think hes describing one hop dandelion which should be easy to do
1692021-02-12T12:08:28 <ariard> aj: you want to flood "noise" package of transaction to propagate them fast and then fallback on reconciliation for the fluff phase?
1702021-02-12T12:11:13 <aj> ariard: do stem phase by making a new i2p/tor connection, sending 1-n tx's with a "testmempoolaccept this, then stem it to a neighbour immediately, then fluff/flood it later" semantics, then closing the connection -- seems like it might be workable to me
1712021-02-12T12:11:33 <aj> ariard: fluff/flood being normal tx propogation
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1762021-02-12T12:24:07 <aj> aha, i think i see what's causing #20725
1772021-02-12T12:24:09 <gribble> https://github.com/bitcoin/bitcoin/issues/20725 | EstimateMedianVal returns higher fee for higher confTarget · Issue #20725 · bitcoin/bitcoin · GitHub
1782021-02-12T12:24:44 * jonasschnelli completed his first guix build
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1802021-02-12T12:26:37 <jonasschnelli> As for adding guix to bitcoinbuilds.org/CI, I would be worried about the consumed time. I haven't measured the time required for a complete guix build. But during a "mergefull" day, it could easly consume the system entierly?
1812021-02-12T12:26:51 <jonasschnelli> But there are probably some caching that could be done
1822021-02-12T12:28:11 <wumpus> agree caching would definitely be necessary to consider that
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1862021-02-12T12:40:54 <wumpus> ariard: good to see that again i almost forgot about the altnet proposal!
1872021-02-12T12:41:04 <wumpus> (#18988)
1882021-02-12T12:41:07 <gribble> https://github.com/bitcoin/bitcoin/issues/18988 | RFC: Introducing AltNet, a pluggable framework for alternative transports by ariard · Pull Request #18988 · bitcoin/bitcoin · GitHub
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1952021-02-12T13:03:23 <bitcoin-git> [bitcoin] jnewbery opened pull request #21160: Net/Net processing: Move tx inventory into net_processing (master...2021-02-tx-in-peer) https://github.com/bitcoin/bitcoin/pull/21160
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1992021-02-12T13:10:28 <bitcoin-git> [bitcoin] ajtowns opened pull request #21161: Fee estimation: don't extend bucket ranges (master...202102-fee-bug-medianval) https://github.com/bitcoin/bitcoin/pull/21161
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2022021-02-12T13:13:10 <bitcoin-git> [bitcoin] jnewbery opened pull request #21162: Net Processing: Move RelayTransaction() into PeerManager (master...2021-02-relay-transactions-peer-manager) https://github.com/bitcoin/bitcoin/pull/21162
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2052021-02-12T13:24:32 <aj> sdaftuar: 21161 above could use your wisdom; i kind of took a hatchet to the code and may have made a mess of things, but hopefully you can make sense of it
2062021-02-12T13:25:46 <sdaftuar> oh no fee estimation
2072021-02-12T13:26:09 <sdaftuar> ok i will see what i can figure out
2082021-02-12T13:27:15 <aj> sdaftuar: hopefully the comments in the PR and issue should make sense at least
2092021-02-12T13:28:38 <aj> MarcoFalke: i am loving this vendetta against random test failures btw
2102021-02-12T13:30:27 <MarcoFalke> aj: It's been going on for years now, and I am unsure if there is progress, but at least we are trying, heh
2112021-02-12T13:32:34 <fanquake> Have to keep development exciting with the occasional ârandomâ failure
2122021-02-12T13:35:18 <MarcoFalke> Right. Otherwise, how would we know the re-run button is working in the CI GUI?
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2152021-02-12T13:36:34 <aj> MarcoFalke: don't the CI systems themselves fail often enough to keep that button well-oiled?
2162021-02-12T13:37:34 <MarcoFalke> Cirrus detects if the failure was on the google cloud or in the tests and can re-run itself
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2192021-02-12T13:49:04 <MarcoFalke> jonasschnelli: DrahtBot caches depends and the gnu store and it takes about the same time as the gitian build
2202021-02-12T13:49:22 <MarcoFalke> (mod whenever the guix manifest changes)
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2222021-02-12T13:59:36 <bitcoin-git> [bitcoin] MarcoFalke opened pull request #21163: doc: Guix is shipped in Debian and Ubuntu (master...2102-docGuix) https://github.com/bitcoin/bitcoin/pull/21163
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2382021-02-12T15:21:40 <vasild> jonatack: no update is pushed to #20197, just checking
2392021-02-12T15:21:43 <gribble> https://github.com/bitcoin/bitcoin/issues/20197 | p2p: improve onion detection in AttemptToEvictConnection() by jonatack · Pull Request #20197 · bitcoin/bitcoin · GitHub
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2432021-02-12T15:25:51 <jonatack> vasild: thanks for checking. i'm thinking of opening an altenative pull that does more (takes a jnewbery feedback to make m_inbound_onion public, does the refactoring we discussed and refactoring to add unit test coverage) and leaving the current pull as-is, for the simpler version
2442021-02-12T15:26:43 <jonatack> to see which way is preferred
2452021-02-12T15:27:27 <vasild> ok
2462021-02-12T15:28:31 <jonatack> as the currently open one is a smaller diff. will update soon (tm)
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2622021-02-12T17:16:30 <bitcoin-git> [bitcoin] MarcoFalke opened pull request #21164: test: Use proper mocktime for uptime (master...2102-mockTimeInit) https://github.com/bitcoin/bitcoin/pull/21164
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2662021-02-12T17:26:01 <ariard> ryanofsky: as with #19160 we start to use libmultiprocess for real, should we move the library under bitcoin-core/ ?
2672021-02-12T17:26:05 <gribble> https://github.com/bitcoin/bitcoin/issues/19160 | multiprocess: Add basic spawn and IPC support by ryanofsky · Pull Request #19160 · bitcoin/bitcoin · GitHub
2682021-02-12T17:26:13 <ariard> maybe a topic for next meeting?
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2712021-02-12T17:35:45 <luke-jr> ariard: why?
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2732021-02-12T17:39:20 <bitcoin-git> [bitcoin] dhruv opened pull request #21165: test: Use mocktime in test_seed_peers (master...fix-for-19884) https://github.com/bitcoin/bitcoin/pull/21165
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2822021-02-12T18:04:28 <ariard> luke-jr: as a dependency it might get more eyes on it if it's under bitcoin-core/ than under chaincodlabs/?
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2852021-02-12T18:04:56 * luke-jr shrugs
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2972021-02-12T19:00:12 <meshcollider> #startmeeting
2982021-02-12T19:00:13 <core-meetingbot> Meeting started Fri Feb 12 19:00:12 2021 UTC. The chair is meshcollider. Information about MeetBot at https://bitcoin.jonasschnelli.ch/ircmeetings.
2992021-02-12T19:00:13 <core-meetingbot> Available commands: action commands idea info link nick
3002021-02-12T19:00:17 <meshcollider> #bitcoin-core-dev Wallet Meeting: achow101 aj amiti ariard bluematt cfields Chris_Stewart_5 digi_james dongcarl elichai2 emilengler fanquake fjahr gleb glozow gmaxwell gwillen hebasto instagibbs jamesob jb55 jeremyrubin jl2012 jnewbery jonasschnelli jonatack jtimon kallewoof kanzure kvaciral lightlike luke-jr maaku marcofalke meshcollider michagogo moneyball morcos nehan NicolasDorier paveljanik petertodd
3012021-02-12T19:00:17 <meshcollider> phantomcircuit promag provoostenator ryanofsky sdaftuar sipa vasild wumpus
3022021-02-12T19:00:21 <achow101> hi
3032021-02-12T19:00:29 <S3RK> hi
3042021-02-12T19:00:33 <meshcollider> Hi everyone :)
3052021-02-12T19:00:36 <meshcollider> Topics today?
3062021-02-12T19:01:45 <achow101> We should try to get #16546 for 22.0
3072021-02-12T19:01:46 <sipa> not much of a topic, but i've been working on adding taproot descriptor support (and, hopefully, signing); hopefully i have something showable next week
3082021-02-12T19:01:48 <gribble> https://github.com/bitcoin/bitcoin/issues/16546 | External signer support - Wallet Box edition by Sjors · Pull Request #16546 · bitcoin/bitcoin · GitHub
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3102021-02-12T19:02:03 <meshcollider> 100% agree andrew
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3122021-02-12T19:02:12 <meshcollider> sipa: awesome!
3132021-02-12T19:02:29 <meshcollider> Something showable = a branch, or a PR?
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3152021-02-12T19:04:21 <sipa> meshcollider: branch is here: https://github.com/sipa/bitcoin/commits/202102_taproot_sign
3162021-02-12T19:04:50 <sipa> it can derive addresses with inner key, and arbitrary merkle trees of scripts (but the scripts can only be pk(...))
3172021-02-12T19:05:26 <sipa> i may PR some of the refactorings to descriptors needed first
3182021-02-12T19:05:53 <sipa> but the exact notation for the descriptors is probably something that needs discussion anyway
3192021-02-12T19:07:39 <achow101> looking forward to that
3202021-02-12T19:08:06 <meshcollider> Why can the scripts only be pk?
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3222021-02-12T19:08:14 <meshcollider> Just WIP?
3232021-02-12T19:08:47 <sipa> well, because multi doesn't exist in bip342 (no OP_CHECKMULTISIG due to not batch verifiable)
3242021-02-12T19:09:23 <sipa> pkh could work, but i'm not sure that it should (160-bit hash is a bad idea of the key can be an aggregate)
3252021-02-12T19:09:40 <sipa> and those are, without miniscript, the only raw scripts descriptors have for now
3262021-02-12T19:10:26 <meshcollider> ah yes
3272021-02-12T19:11:39 <meshcollider> What's happening with miniscript at the moment?
3282021-02-12T19:11:58 <meshcollider> #16800 has had no activity for nearly a year
3292021-02-12T19:11:59 <sipa> nobody is working on getting it in bitcoin core atm
3302021-02-12T19:12:01 <gribble> https://github.com/bitcoin/bitcoin/issues/16800 | Basic Miniscript support in output descriptors by sipa · Pull Request #16800 · bitcoin/bitcoin · GitHub
3312021-02-12T19:12:17 <sipa> sanket1729 said he was interested in picking it up at some point
3322021-02-12T19:12:35 <meshcollider> I guess we should make that higher priority soon then
3332021-02-12T19:12:40 <sipa> i'm also interested in that of course, but it's hard without more people working on it
3342021-02-12T19:12:46 <meshcollider> Oh cool
3352021-02-12T19:12:48 <meshcollider> Yep
3362021-02-12T19:13:57 <jonatack> hi
3372021-02-12T19:14:11 <meshcollider> Any other topics before we end?
3382021-02-12T19:16:02 <meshcollider> #endmeeting
3392021-02-12T19:16:02 <core-meetingbot> topic: Bitcoin Core development discussion and commit log | Feel free to watch, but please take commentary and usage questions to #bitcoin | Channel logs: http://www.erisian.com.au/bitcoin-core-dev/, http://gnusha.org/bitcoin-core-dev/ | Meeting topics http://gnusha.org/bitcoin-core-dev/proposedmeetingtopics.txt / http://gnusha.org/bitcoin-core-dev/proposedwalletmeetingtopics.txt
3402021-02-12T19:16:02 <core-meetingbot> Meeting ended Fri Feb 12 19:16:02 2021 UTC.
3412021-02-12T19:16:02 <core-meetingbot> Minutes: https://bitcoin.jonasschnelli.ch/ircmeetings/logs/bitcoin-core-dev/2021/bitcoin-core-dev.2021-02-12-19.00.moin.txt
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3432021-02-12T19:19:13 <jonatack> as it were, i've never had a "project" and could be in the market for one (as long as people want to see it done enough to review it)
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3462021-02-12T19:21:51 <bitcoin-git> [bitcoin] achow101 opened pull request #21166: Pass through SignatureExtractorChecker methods to base (master...fix-sig-extractor-checker) https://github.com/bitcoin/bitcoin/pull/21166
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3482021-02-12T19:22:26 <jonatack> though i'm fine with continuing to test and review others' projects and helping them move forward
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3502021-02-12T19:30:43 <bitcoin-git> [bitcoin] MarcoFalke closed pull request #21164: test: Use proper mocktime for uptime (master...2102-mockTimeInit) https://github.com/bitcoin/bitcoin/pull/21164
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3532021-02-12T19:35:14 <bitcoin-git> [bitcoin] MarcoFalke pushed 3 commits to master: https://github.com/bitcoin/bitcoin/compare/e9c037ba64dd...bf3189eda65d
3542021-02-12T19:35:15 <bitcoin-git> bitcoin/master 015637d Dhruv Mehta: [refactor] Correct log message in net.cpp
3552021-02-12T19:35:15 <bitcoin-git> bitcoin/master d4187e4 Dhruv Mehta: [test] Use mocktime in test_seed_peers()
3562021-02-12T19:35:16 <bitcoin-git> bitcoin/master bf3189e MarcoFalke: Merge #21165: test: Use mocktime in test_seed_peers
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3592021-02-12T19:35:33 <bitcoin-git> [bitcoin] MarcoFalke merged pull request #21165: test: Use mocktime in test_seed_peers (master...fix-for-19884) https://github.com/bitcoin/bitcoin/pull/21165
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3702021-02-12T20:47:18 <glozow> ariard aj: unfamiliar with dandelion but trying to catch up on what was said earlier. you're imagining a dandelion where instead of a stempool, you testmempoolaccept to verify it's correct (you'd need all parents ofc), maybe cache wtxid and some info, and relay? with some probability stem / some probability fluff?
3712021-02-12T20:47:45 <glozow> and separate from that, all initial broadcasts with a temporary i2p/tor connection + dandelion if possible?
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3872021-02-12T22:39:21 <bitcoin-git> [bitcoin] jonatack opened pull request #21167: net: make CNode::m_inbound_onion public, initialize explicitly (master...m_inbound_onion-make-public-and-explicit) https://github.com/bitcoin/bitcoin/pull/21167
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3922021-02-12T23:28:17 <ariard> glozow: what I'm thinking of is with all the ongoing refactors around tx-relay/mempool it'll be become easier to allocate per-peer dandelion "bandwidth", either to relay solo tx or package
3932021-02-12T23:28:47 <ariard> testmempoolaccept can be used to evaluate stuff, which if valid will be cached in a stempoool
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3952021-02-12T23:30:10 <ariard> and yes doing initial broadcast on a single-shot connection modulo are tor folks going to be happy if we redirect that much traffic on their infra?
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3972021-02-12T23:33:22 <ariard> and maybe if we start to have this notion of strategic outbound peers with erlay map our stem paths on them?
3982021-02-12T23:34:00 <sipa> as far as i know, there are no known solutions to dandelion's dos issues
3992021-02-12T23:34:10 <sipa> so i'm not sure what you're talking about
4002021-02-12T23:36:53 <ariard> this https://bitcoin.stackexchange.com/questions/81503/what-is-the-tradeoff-between-privacy-and-implementation-complexity-of-dandelion?
4012021-02-12T23:37:49 <sipa> yes
4022021-02-12T23:39:36 <ariard> I think aj point is actually to testmempoolaccet those stem transactions and further you can allocate per-peer resources by limiting their announcements?
4032021-02-12T23:40:07 <sipa> that
4042021-02-12T23:40:18 <sipa> ah, i haven't seen that
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4062021-02-12T23:42:25 <sipa> but per-peer resources generally don't work i think, as dandelion has a natural funnel effect (and nodes don't know where in the funnel they are), so if i send to a node a stream of stem transaction equal to the rate limit (and thus occupying all of that node's outbound rate limit as well) i can successfully prevent anyone else from using that node as a router
4072021-02-12T23:43:48 <sipa> also, it's really hard to decide what that rate limit should be... the mempool has a natural rate limit because it can assume that transactions relayed through it will confirm and thus pay its fee, you can't make the same assumption about stem transactions (if you receive two conflicting stem transactions from two distinct nodes, you must relay them both, or otherwise you leak the existence of the
4082021-02-12T23:43:54 <sipa> first to the second)
4092021-02-12T23:44:08 <ariard> yeah I did hit the same limit when I worked on my package relay a while back, it was about caching the package ids to save bandwidth, the solution I thought about was round-robin incoming announcements on the outgoing
4102021-02-12T23:44:16 <ariard> but sounds fairly complex I admit
4112021-02-12T23:44:32 <ariard> what about a rate limit based on near-confirmation txn?
4122021-02-12T23:44:40 <sipa> what does that mean?
4132021-02-12T23:45:21 <ariard> I accept your stem transactions only if its feerate is a good candidate for near-inclusion in a block
4142021-02-12T23:45:49 <ariard> though an attacker might have broadcast a conflicting transation on the rest of the network
4152021-02-12T23:46:22 <sipa> right, but the problem is you have to make that decision independently of any other stem transaction you've seen
4162021-02-12T23:47:09 <sipa> so if you have 100 peers, they can all send you distinct conflicting stem transactions... and even if they're all individually good feerate, only one will confirm
4172021-02-12T23:47:15 <ariard> "you must relay them both, or otherwise you leak the exsitence of the first to the second" can you silently drop one or at least inobservable what's your relay decision was?
4182021-02-12T23:47:58 <sipa> if the transaction was unique, the sender can easily see that you never relayed theirs to the network
4192021-02-12T23:47:59 <ariard> *at least make inobservable
4202021-02-12T23:48:03 <sipa> but just observing it not appearing
4212021-02-12T23:48:11 <sipa> *by
4222021-02-12T23:48:40 <ariard> if you have a multi hop stem path, the drop might have happen anywhere on the path?
4232021-02-12T23:49:13 <ariard> and we assume the stem path to be unknown to the initial-broadcaster?
4242021-02-12T23:49:23 <sipa> yeah, perhaps
4252021-02-12T23:49:32 <sipa> it feels icky,
4262021-02-12T23:49:49 <ariard> yeah I agree it's complex
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4282021-02-12T23:50:49 <sipa> like the obvious solution is to give each node their own separate stempool, which is kept consistent with the real mempool, but not consistent with other stempools
4292021-02-12T23:50:59 <sipa> but that's obviously terrible for resource usage
4302021-02-12T23:51:24 <ariard> you just dup the mempool?
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4332021-02-12T23:51:40 <sipa> well, the mempool is shared in this model
4342021-02-12T23:51:45 <sipa> but the stempools are all distinct
4352021-02-12T23:52:13 <ariard> also about conflicting transactions if we care about masking transaction origin, it's up to the utxo owner to not produce conflicting transactions
4362021-02-12T23:52:31 <sipa> oh sure
4372021-02-12T23:53:01 <sipa> but we also have to make sure conflicting transactions don't result in connection graph leaks
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4392021-02-12T23:53:08 <sipa> which is another form of privacy
4402021-02-12T23:53:35 <sipa> (or at least, don't worsen it significantly; it's hard to make any guarantees about it in the first place0
4412021-02-12T23:53:37 <ariard> what do you mean by connection graph ? your topology of tx-relay peers?
4422021-02-12T23:53:41 <sipa> yeah
4432021-02-12T23:53:56 <sipa> the ability to infer two peers of yours are connected, for example
4442021-02-12T23:54:25 <ariard> yeah sadly I think on that point it's more about not making it worst
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