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 16 2017-09-26T01:49:56  <bitcoin-git> [bitcoin] sipa opened pull request #11403: SegWit wallet support (master...201709_segwitwallet2) https://github.com/bitcoin/bitcoin/pull/11403
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 20 2017-09-26T01:55:31  <analiser> look like #10783 041dad9 RCP Various rpc argument fixes(instagiibbs) in the 0.15 channelog is what cause some errors in python bicoinlib module i just solve the issue removing from module bitcoin SelectParams() attribute and from bitcoin.rpc remove Proxy() attribute hope that work for any here
 21 2017-09-26T01:55:33  <gribble> https://github.com/bitcoin/bitcoin/issues/10783 | [RPC] Various rpc argument fixes by instagibbs · Pull Request #10783 · bitcoin/bitcoin · GitHub
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 28 2017-09-26T02:59:00  <bitcoin-git> [bitcoin] jtimon opened pull request #11404: RPC: Chainparams: Simplify -rpcport and CBaseMainParams  (master...b16-chainparams-rpcport) https://github.com/bitcoin/bitcoin/pull/11404
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112 2017-09-26T10:28:16  <bitcoin-git> [bitcoin] laanwj pushed 2 new commits to master: https://github.com/bitcoin/bitcoin/compare/8cf88b4aaeaf...67879b7c4431
113 2017-09-26T10:28:16  <bitcoin-git> bitcoin/master 28d4542 Matt Corallo: Disallow uncompressed pubkeys in bitcoin-tx [multisig] output adds
114 2017-09-26T10:28:17  <bitcoin-git> bitcoin/master 67879b7 Wladimir J. van der Laan: Merge #11377: Disallow uncompressed pubkeys in bitcoin-tx [multisig] output adds...
115 2017-09-26T10:28:51  <bitcoin-git> [bitcoin] laanwj closed pull request #11377: Disallow uncompressed pubkeys in bitcoin-tx [multisig] output adds (master...2017-09-bitcoin-tx-uncompressed-segwit) https://github.com/bitcoin/bitcoin/pull/11377
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159 2017-09-26T14:17:19  <bitcoin-git> [bitcoin] laanwj pushed 2 new commits to master: https://github.com/bitcoin/bitcoin/compare/67879b7c4431...0f8e09599db6
160 2017-09-26T14:17:19  <bitcoin-git> bitcoin/master df10edf MeshCollider: More user-friendly error message when partially signing
161 2017-09-26T14:17:20  <bitcoin-git> bitcoin/master 0f8e095 Wladimir J. van der Laan: Merge #11288: More user-friendly error message when partially signing...
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163 2017-09-26T14:18:15  <bitcoin-git> [bitcoin] laanwj closed pull request #11288: More user-friendly error message when partially signing (master...201709_partial_sign_error) https://github.com/bitcoin/bitcoin/pull/11288
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166 2017-09-26T14:24:54  <bitcoin-git> [bitcoin] laanwj pushed 2 new commits to master: https://github.com/bitcoin/bitcoin/compare/0f8e09599db6...dc597bb895ef
167 2017-09-26T14:24:54  <bitcoin-git> bitcoin/master d01a968 Suhas Daftuar: wallet: update stored witness in AddToWallet...
168 2017-09-26T14:24:55  <bitcoin-git> bitcoin/master dc597bb Wladimir J. van der Laan: Merge #11225: wallet: update stored witness in AddToWallet...
169 2017-09-26T14:25:34  <bitcoin-git> [bitcoin] laanwj closed pull request #11225: wallet: update stored witness in AddToWallet (master...2017-09-update-tx-witness) https://github.com/bitcoin/bitcoin/pull/11225
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184 2017-09-26T16:03:58  <promag> jnewbery: https://github.com/bitcoin/bitcoin/pull/11031/commits/a6919d9a6908efaf0c913cccda21d63ed1517b3c s/enablerpcmethod/deprecatedrpc
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190 2017-09-26T16:27:26  <jnewbery> promag: thanks, fixed
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192 2017-09-26T16:52:12  <maaku> I'm considering removing the 200 non-push opcode limit and SIGOP counting for my tail-call proposal. I would be interested in feedback as to why this would be a terrible idea.
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206 2017-09-26T17:36:26  <bitcoin-git> [bitcoin] jtimon closed pull request #11404: RPC: Chainparams: Simplify -rpcport and CBaseMainParams  (master...b16-chainparams-rpcport) https://github.com/bitcoin/bitcoin/pull/11404
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211 2017-09-26T17:51:49  <instagibbs> what interval if any does travis run extended functional tests?
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219 2017-09-26T18:32:01  <jtimon> sipa: what's the reasoning for the bias for nodes using the default port? that seems weird
220 2017-09-26T18:33:03  <sipa> jtimon: otherwise you can spam the network with addr messages for services you don't like, and get the whole bitcoin network to try connecting to them
221 2017-09-26T18:33:39  <jtimon> how is that affected by the port, I don't follow...
222 2017-09-26T18:33:55  <sipa> with the bias, that can pretty much only happen for P2P default port, which is very unlikely to have any interesting services running, other than bitcoin :)
223 2017-09-26T18:34:29  <jtimon> oh, I see
224 2017-09-26T18:34:44  <jtimon> I think I get it...
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226 2017-09-26T18:35:19  <jtimon> in any case, as said seems unrelated to #11404
227 2017-09-26T18:35:30  <gribble> https://github.com/bitcoin/bitcoin/issues/11404 | RPC: Chainparams: Simplify -rpcport and CBaseMainParams by jtimon · Pull Request #11404 · bitcoin/bitcoin · GitHub
228 2017-09-26T18:35:49  <sipa> well you're giving all networks the same default port
229 2017-09-26T18:36:04  <sipa> meaning that if you want to run more than one network on the same machine, one of them will need a non-default port
230 2017-09-26T18:36:42  <jtimon> the same defaul rpc port
231 2017-09-26T18:36:55  <esotericnonsense> yes, it's the rpc port only in the PR, was a bit confused by your comment sipa
232 2017-09-26T18:37:02  <sipa> oh!
233 2017-09-26T18:37:08  <sipa> this is about the RPC port
234 2017-09-26T18:37:11  <esotericnonsense> i still dislike the behaviour of having to specify a different rpcport for testnet/regtest though
235 2017-09-26T18:37:22  <esotericnonsense> though that's just a quality-of-life annoyance
236 2017-09-26T18:37:31  <sipa> yes, agree - though that's much less bad than having the same P2P port
237 2017-09-26T18:37:54  <sipa> sorry, i misunderstood!
238 2017-09-26T18:38:47  <esotericnonsense> while we're on the subject is there any preference for connecting to nodes with a different IP (perhaps based on this standard port bias)? e.g. if I run 50000 nodes from one IP and spam addr messages
239 2017-09-26T18:38:57  <gmaxwell> it just makes them unusable by default, I cannot fathom why we would do that.
240 2017-09-26T18:39:53  <sipa> esotericnonsense: we never make more than 1 outgoing connection to the same 'network group' (whose definition is dependent on the network, but for IPv4 it's a /16 i think)
241 2017-09-26T18:40:02  <esotericnonsense> aha.
242 2017-09-26T18:40:41  <sipa> and without -addnode we'll never connect to an unroutable address (so not to 192.168.x, not 127.0.0.1, not 10.x, etc)
243 2017-09-26T18:41:15  <sipa> i think we should at some point have local network discovery and try to connect within your own network, but not using the same external connection slots)
244 2017-09-26T18:42:30  <gmaxwell> sipa: I started working on that and didn't have a good way to eliminate the duplicate connections.
245 2017-09-26T18:42:43  <gmaxwell> E.g. hosts A and B on the local network, both connect to each other.
246 2017-09-26T18:43:53  <gmaxwell> I thought perhaps just a stupid hurestic, "if you listen, connect only to lower sort-order addresses than yours".
247 2017-09-26T18:44:43  <sipa> or just test for duplicate IP pairs? within a local network you can probably assume that both parties will see each other's by their actual IP (not NAT etc0
248 2017-09-26T18:45:19  <sipa> so don't connect out to any IP you're seeing an incoming connection from
249 2017-09-26T18:46:29  <gmaxwell> Good point. What about the race when two connect at the same time
250 2017-09-26T18:46:44  <jtimon> esotericnonsense: for bitcoin-cli, specifying -testnet does the same as -rpcport=18332, if you specify rpcport, specifying -testnet is completely meaningless
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253 2017-09-26T18:47:38  <jtimon> gmaxwell: what is made unusable by default? I don't follow
254 2017-09-26T18:48:16  <sipa> gmaxwell: if you have a duplicate pair among actual connections, and your IP is the lexicographically lower of the two, disconnect?
255 2017-09-26T18:48:54  <Sentineo> gmaxwell: sipa it sounds like split horizont in routing protocols what discuss ...
256 2017-09-26T18:49:07  <Sentineo> what you discuss
257 2017-09-26T18:49:29  <gmaxwell> jtimon: Making everything use the same rpc port means you cannot run testnet and bitcoin at the same time anymore except through manually configuring them.
258 2017-09-26T18:50:29  <Sentineo> btw sipa why is a node keeping 8 connetions outside ? I have a node with 123 connection, 8 of them always go outside. I would assume my node should prefer inbound connections.
259 2017-09-26T18:50:48  <jtimon> oh, that. yeah. if you want to use both in the same machine you have to specify a different rpc port in one of the,
260 2017-09-26T18:50:58  <jtimon> them
261 2017-09-26T18:51:09  <sipa> Sentineo: we always make 8 outgoing connections - regardless of how many incoming connections you have
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263 2017-09-26T18:51:29  <sipa> outgoing connections are far more sybil resistant, as their endpoints are under your own control
264 2017-09-26T18:52:00  <jtimon> I don't think that unusable, but ok
265 2017-09-26T18:52:02  <gmaxwell> Sentineo: "prefer inbound" ?!?! ... the inbound could all be a single badguy.  We consider inbounds irrelevant for security because of that.
266 2017-09-26T18:52:54  <Sentineo> yeah, did not thing of that. Was lookng at it the "i serve the network" point of view, which is stupid from security standpoing ...
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272 2017-09-26T19:10:05  <maaku> sipa: Bonjour/Zeroconf would make initial sync of new devices without blowing data caps much more idiot proof
273 2017-09-26T19:11:49  <maaku> it would also make sense to combine that with preferring making block requests to local peers during IBD
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275 2017-09-26T19:13:27  <sipa> the IBD sync will already prefer faster peers, and will disconnect peers that prevent it from going faster - so i hope no special logic for that is needed
276 2017-09-26T19:14:22  <sipa> i haven't looked at any of those local connection services
277 2017-09-26T19:16:38  <gmaxwell> they are awful zeroday magnets.
278 2017-09-26T19:16:44  <gmaxwell> of course.
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280 2017-09-26T19:17:44  <maaku> sipa: the disconnect actually sounds somewhat dangerous. could I used fast connectivity and network attacks to partition someone off during IBD?
281 2017-09-26T19:18:51  <sipa> maaku: there is certainly an increased attack vector, but you'd at least need to combine it with other strategies to control the new connections being made (eclipse attacks etc)
282 2017-09-26T19:19:09  <sipa> maaku: in general i do think that partitioning during IBD is less of an issue - you know you're not caught up
283 2017-09-26T19:23:27  <TD-Linux> bonjour is a pretty sensible protocol for that
284 2017-09-26T19:23:40  <gmaxwell> you're still making progress and you already have your headers. There is an argument, however, that 'after' IBD we should dump most of our outbound peers.
285 2017-09-26T19:24:29  <gmaxwell> but that is complicated by there not being a clear 'after'.
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287 2017-09-26T19:36:45  <maaku> right
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290 2017-09-26T19:44:33  <gmaxwell> TD-Linux: things like bonjour don't help doing things like having connections inside amazon regions for hosts on aws, which have radically less expensive bandwidth than bandwidth to the internet.
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301 2017-09-26T20:04:29  <TD-Linux> gmaxwell, nope. I guess you could ship lists of these
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306 2017-09-26T20:25:59  <bitcoin-git> [bitcoin] TheBlueMatt opened pull request #11406: Add state message print to AcceptBlock failure message. (master...2017-09-checkblock-fail-print) https://github.com/bitcoin/bitcoin/pull/11406
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308 2017-09-26T20:34:45  <jtimon> does anybody use -mempoolreplacement=0 ? would it make sense to do https://github.com/ElementsProject/elements/pull/248 in bitcoin ?
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311 2017-09-26T20:45:22  <luke-jr> jtimon: yes, people use it, and removing it would likely make a ruckus. There's also zero harm in leaving it.
312 2017-09-26T20:45:53  <jtimon> yeah, if people use it, no point in removing it
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317 2017-09-26T20:56:18  <promag> achow101: in https://github.com/bitcoin/bitcoin/pull/10583/commits/8d5d4cf4c3077e8f3269fab3b98da7413e100081 commit message there is a double space. Also, Validateaddress should always be lowercase?
318 2017-09-26T20:59:50  <promag> jnewbery: so -deprecatedrpc can be used to enable some deprecated params? I thought is to enable the full (deprecated) rpc
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320 2017-09-26T21:07:59  <achow101> promag: who cares
321 2017-09-26T21:08:27  <achow101> promag: super nitty things like that don't really matter and are not particularly conducive to development
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323 2017-09-26T21:11:28  <promag> that's ok, I was reading your code and figured you want to know about that if by any change you happen to fix something else
324 2017-09-26T21:11:37  <promag> *chance
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326 2017-09-26T21:14:11  <promag> talking about nitty things https://github.com/bitcoin/bitcoin/pull/11395#issuecomment-332308834
327 2017-09-26T21:15:27  <promag> luke-jr: if you run clang-format as per developer notes you will see those details
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330 2017-09-26T21:18:48  <promag> if there is such guide, which took some community effort to write why not follow it? I would say top core developers should be the first to comply? It's not that it takes a lot of time doing so.
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334 2017-09-26T21:25:13  <bitcoin-git> [bitcoin] instagibbs opened pull request #11407: add functional test for mempoolreplacement command line arg (master...testmempoolreplacearg) https://github.com/bitcoin/bitcoin/pull/11407
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339 2017-09-26T21:37:43  <sipa> promag: there is balance between costs and benefits of enforcing style
340 2017-09-26T21:38:06  <sipa> it adds overhead to both people who write patches and those who reviee
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346 2017-09-26T21:51:20  <jnewbery> promag: I personally think it's fine to use -deprecatedrpc to signal that you want to receive an RPC return object in the old format
347 2017-09-26T21:55:13  <promag> sipa: the problem is to find the sweet spot for everyone. Running clang-format-diff.py is not that big overhead is it? Anyway, I'll stop nitpicking.
348 2017-09-26T21:55:55  <promag> jnewbery: I guess so, and should tests all deprecated keys or one is enough?
349 2017-09-26T21:59:35  <bitcoin-git> [bitcoin] jonasschnelli pushed 2 new commits to master: https://github.com/bitcoin/bitcoin/compare/dc597bb895ef...2505c5c0a9f8
350 2017-09-26T21:59:35  <bitcoin-git> bitcoin/master 7b137ac Lucas Betschart: [Qt] Add delay before filtering transactions...
351 2017-09-26T21:59:36  <bitcoin-git> bitcoin/master 2505c5c Jonas Schnelli: Merge #11015: [Qt] Add delay before filtering transactions...
352 2017-09-26T22:00:06  <bitcoin-git> [bitcoin] jonasschnelli closed pull request #11015: [Qt] Add delay before filtering transactions (master...searchDelay) https://github.com/bitcoin/bitcoin/pull/11015
353 2017-09-26T22:01:50  <sipa> promag: i'm personally in favor of more strict style conventions, and would very much like the project to force one style... but that's just not feasible. nitpicking everything kills people's motivation to work
354 2017-09-26T22:06:11  <CryptAxe> Is it possible for nodes that don't understand the extended transaction serialization format for segwit to still validate blocks with those transactions inside of them?
355 2017-09-26T22:06:57  <goatpig> they cant check the scriptsigs
356 2017-09-26T22:07:14  <goatpig> but otherwise pre SW nodes can verify SW transactions
357 2017-09-26T22:08:12  <sipa> CryptAxe: sure, they just won't see the witnesses
358 2017-09-26T22:08:25  <sipa> (as peers will strip the witness before relaying to a non-segwit peer)
359 2017-09-26T22:08:57  <bitcoin-git> [bitcoin] PierreRochard opened pull request #11408: Trivial: Fix parameter name typo in ErasePurpose walletdb method (master...walletdb-typo) https://github.com/bitcoin/bitcoin/pull/11408
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361 2017-09-26T22:09:31  <CryptAxe> So they can still deserialize the transaction? Cool, I think this part: https://github.com/bitcoin/bitcoin/blob/master/src/primitives/transaction.h#L204-L212 made me think that they would have an empty vin and it would be invalid
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363 2017-09-26T22:10:01  <CryptAxe> Ahhh so the transactions are relayed in a different format to old nodes
364 2017-09-26T22:10:06  <CryptAxe> I didn't see that part
365 2017-09-26T22:10:10  <sipa> CryptAxe: if they see the witness, the serialization will very deliberately fail
366 2017-09-26T22:10:42  <sipa> CryptAxe: the reason segwit is a softfork is the fact that it is possible to strip out the witness without invalidating the transaction (from the perspective of old nodes)
367 2017-09-26T22:11:07  <CryptAxe> goatpig and sipa thank you, I have more reading to do now :)
368 2017-09-26T22:11:29  <sipa> it's probably better to think of the witness as not actually part of the transaction - it's just some auxilliary data - which _only for relay_ is relayed in a weird interspersed way inside the normal tx data
369 2017-09-26T22:12:06  <CryptAxe> sipa so the stripped format has some kind of dummy vin or something?
370 2017-09-26T22:12:10  <sipa> no
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373 2017-09-26T22:12:22  <sipa> the stripped format is just the old transaction format
374 2017-09-26T22:12:33  <sipa> it has inputs and outputs, and no witnesses
375 2017-09-26T22:12:43  <sipa> ah, i see what you mean
376 2017-09-26T22:12:49  <sipa> yes, the scriptSigs are empty
377 2017-09-26T22:12:58  <sipa> but the rest of the inputs is intact
378 2017-09-26T22:13:03  <CryptAxe> Thank you, a bit confused about all that
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381 2017-09-26T22:17:22  <CryptAxe> sipa without the scriptSigs why aren't the transactions invalid to the older nodes?
382 2017-09-26T22:17:42  <sipa> CryptAxe: because their scriptPubKeys don't require a scriptSig
383 2017-09-26T22:17:49  <CryptAxe> Ah!
384 2017-09-26T22:17:58  <sipa> (they have the form OP_0 <20-byte hash>)
385 2017-09-26T22:18:05  <CryptAxe> genius
386 2017-09-26T22:18:57  <sipa> if segwit is used in P2SH-wrapped form, the scriptPubKey is a P2SH output with Hash(OP_0 <20-byte hash>), and the scriptSig contains _only_ the redeemscript (which is equal to the actual OP_0 <20 byte hash>)
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388 2017-09-26T22:21:24  <CryptAxe> Cool, thanks again guys!
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