1 2015-11-09T00:00:45  <wangchun> Lightsword: okay, got it: [2015-11-09T00:00:16.713501Z] receive version message: /RelayNetworkClient:42/: version 70000, blocks=0, us=[::]:0, peer=26, peeraddr=...
  2 2015-11-09T00:00:54  <wangchun> Lightsword: should be ok now
  3 2015-11-09T00:01:39  <Lightsword> wangchun, which relay server are you connecting to?
  4 2015-11-09T00:02:10  *** rodkeys has joined #bitcoin-dev
  5 2015-11-09T00:02:12  <wangchun> Lightsword: The server in Beijing
  6 2015-11-09T00:02:34  <Lightsword> wangchun, do you run relayclient on all your nodes with bitcoind?
  7 2015-11-09T00:03:10  <wangchun> Lightsword: We have our own block distribution network among our own servers
  8 2015-11-09T00:04:04  <Lightsword> wangchun, do you use a GBT relay or just connect the bitcoind nodes together with addpeer?
  9 2015-11-09T00:04:11  <phantomcircuit> Lightsword, he shouldn't specify the server, it'll find the best one automatically now
 10 2015-11-09T00:04:34  <Lightsword> phantomcircuit, oh, was that pretty recent?
 11 2015-11-09T00:04:54  <wangchun> Lightsword: You may watch if the lag getting improved from now on
 12 2015-11-09T00:04:56  <phantomcircuit> more than 2 months ago
 13 2015-11-09T00:05:09  <phantomcircuit> it connects to them all in a loop and selects the one that had the lowest latency in connecting
 14 2015-11-09T00:06:04  <wangchun> Lightsword: No, we pre-broadcast stratum jobs from mining processes to propagation servers
 15 2015-11-09T00:06:44  <Lightsword> wangchun, any idea why bw.com is so slow? they are using ckpool right? I know they are at least using ckproxy to some extent due to the connect message.
 16 2015-11-09T00:07:36  <wangchun> Lightsword: bw.com does not have a good technical team, I believe
 17 2015-11-09T00:08:47  <Lightsword> wangchun, adding these two options to bitcoin.conf make a huge difference for pools reliant on bitcoind’s GBT minrelaytxfee=0.0001 limitfreerelay=0
 18 2015-11-09T00:09:06  <wangchun> hmm I cannot believe the relay network was not in effect in the past few months
 19 2015-11-09T00:09:11  <Lightsword> I run ckpool and was getting massive GBT delays of up to 10 seconds
 20 2015-11-09T00:09:51  <Lightsword> but those two options brought it down to under a second
 21 2015-11-09T00:10:20  <wangchun> Because In August we only got one block orphaned, that is 0.1%, without the relay network
 22 2015-11-09T00:10:54  <Lightsword> wangchun, you get template updates over stratum from western pools right?
 23 2015-11-09T00:12:55  <Lightsword> wangchun, I know I orphaned one of your blocks recently https://blockchain.info/block-height/381905
 24 2015-11-09T00:13:05  <wangchun> Lightsword: We watch stratum updates from bitfury, slush, eligius, btcguild, antpool, bw, btcchina, wemineltc, coinotron and ltc1btc
 25 2015-11-09T00:13:23  <wangchun> Lightsword: http://www.f2pool.com/bitcoin-blocks last month we orphaned 4
 26 2015-11-09T00:14:24  <wangchun> Lightsword: ghash.io blocked the ip addresses of my stratum clients
 27 2015-11-09T00:14:26  <Lightsword> wangchun, you should add the ckpool based pools as well
 28 2015-11-09T00:14:34  <Lightsword> ghash.io is very slow
 29 2015-11-09T00:14:57  <Lightsword> they are at the bottom of my poolbench tool
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 31 2015-11-09T00:15:25  <Lightsword> you should add pool.bitclubpool.com:3333 stratum.kano.is:3333 and solo.ckpool.org:3333
 32 2015-11-09T00:16:14  <Lightsword> wangchun, does btcchina use the same SPV mining system you do?
 33 2015-11-09T00:16:52  <wangchun> Lightsword: I don't like the name "SPV mining", if that means mining on stratum updates, in fact everyone is doing that
 34 2015-11-09T00:17:14  <wangchun> Lightsword: I believe it is a in-stock feature of lukejr's eloipool
 35 2015-11-09T00:17:35  <Lightsword> wangchun, it is not in eloipool, they grab block headers over p2p but only after full validation
 36 2015-11-09T00:18:04  <Lightsword> wangchun, eloipool stock is immune to the BIP66 fork issue you had
 37 2015-11-09T00:18:12  <Lightsword> since it waits for full validation
 38 2015-11-09T00:18:15  <wangchun> Lightsword: No, eloipool doesn't do full validation
 39 2015-11-09T00:18:39  <wangchun> it simply add 1 to the current block height and issue a "clearmerkleroot"
 40 2015-11-09T00:18:40  <Lightsword> wangchun, I’m going off of what I was told by Luke-Jr
 41 2015-11-09T00:19:17  <Lightsword> wangchun, the way he told me it works is that it waits for the notify before grabbing the block header over the p2p network to bypass GBT
 42 2015-11-09T00:19:41  * midnightmagic pokes Luke-Jr 
 43 2015-11-09T00:20:10  <Lightsword> wangchun, I’m pretty sure only the chinese pools do stratum based SPV mining, and bw.com does not from the looks of it
 44 2015-11-09T00:20:13  <Luke-Jr> wangchun: Eloipool doesn't do that until the previous block is fully checked
 45 2015-11-09T00:21:02  <wangchun> Luke-Jr: you changed it? When I cloned it in 2013, it was not like that.
 46 2015-11-09T00:21:09  <Luke-Jr> wangchun: that's the most it has ever done
 47 2015-11-09T00:22:13  <wangchun>  72     def updateBlock(self, newBlock, height=None, bits=None, _HBH=None):
 48 2015-11-09T00:22:45  <wangchun> If height=None, the new height is set to current height + 1
 49 2015-11-09T00:22:51  <Lightsword> wangchun, were you the first to develop the stratum based SPV mining or do you know of anyone else to do it?
 50 2015-11-09T00:23:00  <Lightsword> before you
 51 2015-11-09T00:23:21  <wangchun> Again, I don't like the name "SPV mining"
 52 2015-11-09T00:23:28  <Luke-Jr> "SPV mining" is a bad name, agreed
 53 2015-11-09T00:23:33  <Lightsword> wangchun, what do you prefer?
 54 2015-11-09T00:23:40  <wangchun> We developed mining upon other pools' stratum header
 55 2015-11-09T00:23:43  <Luke-Jr> wangchun: height+1 is not a problem, since it's obviously always right
 56 2015-11-09T00:24:42  <wangchun> but eloipool, at least in my 2013 fork, have a feature to mine on bitcoin p2p block inv command, which does not even have bits and height params
 57 2015-11-09T00:24:54  <Lightsword> wangchun, what sort of sanity checks are you able to do to prevent bad data?
 58 2015-11-09T00:25:13  <Luke-Jr> wangchun: yes, that inv never gets sent until it is checked
 59 2015-11-09T00:25:28  <wangchun> so when new block inv is received from a "trusted" bitcoind, height is set to height + 1, bits is set to the bits of the last block
 60 2015-11-09T00:25:47  <wangchun> ok, "trusted bitcoind" should verify the block hmm...
 61 2015-11-09T00:26:13  <Lightsword> wangchun, that’s why you forked during BIP66 but eligius did not
 62 2015-11-09T00:26:19  <wangchun> ok i admit this is my invention haha
 63 2015-11-09T00:26:36  <midnightmagic> :-/
 64 2015-11-09T00:26:49  <Luke-Jr> (note BTCChina also did HO mining, but only submitted blocks via bitcoind, which served as a protective layer)
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 66 2015-11-09T00:26:57  <wangchun> Lightsword: because we disable the timeout due to a bug in the watchdog
 67 2015-11-09T00:27:13  <Luke-Jr> wangchun: the timeout wouldn't have worked anyway, I think
 68 2015-11-09T00:27:24  <Luke-Jr> wangchun: both *gminer refuse to backtrack to work on old blocks
 69 2015-11-09T00:27:35  <wangchun> Luke-Jr: If there is a timeout, the incident should be avoidable.
 70 2015-11-09T00:27:56  <Lightsword> would sending a stratum reconnect get them to backtrack?
 71 2015-11-09T00:28:00  <Luke-Jr> the miners would have gone idle instead of finding a bad block, and people would complain
 72 2015-11-09T00:28:01  <Luke-Jr> Lightsword: no
 73 2015-11-09T00:28:11  <Luke-Jr> with cgminer, it's miner-wide across all pools
 74 2015-11-09T00:28:19  <Luke-Jr> with BFGMiner, it's across all pools working on the same "goal"
 75 2015-11-09T00:28:40  <Lightsword> so what happens during an orphan race?
 76 2015-11-09T00:29:06  <Luke-Jr> Lightsword: the side seen last gets all the work, IIRC
 77 2015-11-09T00:29:07  <Lightsword> that requires a backtrack right?
 78 2015-11-09T00:29:20  <Luke-Jr> no
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 80 2015-11-09T00:29:28  <Luke-Jr> it would go A->B->B'
 81 2015-11-09T00:29:36  <Luke-Jr> then refuse to work on A or B
 82 2015-11-09T00:29:53  <Lightsword> oh, ok
 83 2015-11-09T00:30:14  <wangchun> Luke-Jr: You mean cgminer refuse to change previousblockhash for the same height?
 84 2015-11-09T00:30:25  <Luke-Jr> wangchun: it refuses to go back to an older prevblockhash
 85 2015-11-09T00:30:34  <Luke-Jr> so if it sees A then B, it will refuse to work on A anymore
 86 2015-11-09T00:30:46  <Lightsword> but can switch to a different B
 87 2015-11-09T00:30:52  <Luke-Jr> yes
 88 2015-11-09T00:31:59  <Luke-Jr> I wonder if I should figure out a way to detect all pools that did B, going back to A
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 90 2015-11-09T00:32:55  <Lightsword> wangchun, so if you get into a BIP66 situation again where you get a bad header over stratum looks like you would have to wait for a valid block before the miners could mine again
 91 2015-11-09T00:33:46  <wangchun> Lightsword: we have timeout set to 75 seconds, if bitcoind cannot catch up within 75 seconds, the stratum job is dropped
 92 2015-11-09T00:34:06  <Lightsword> wangchun, the problem is the miners will not return the the previous header
 93 2015-11-09T00:34:26  <wangchun> Lightsword: then let them go idle
 94 2015-11-09T00:34:38  <Lightsword> yeah, that’s the only option it looks like
 95 2015-11-09T00:34:53  <Lightsword> wangchun, do you run any bitcoind nodes outside of china?
 96 2015-11-09T00:35:20  <wangchun> Lightsword: In fact I haven't found major hashrate drop by going back to previous header
 97 2015-11-09T00:36:29  <Lightsword> wangchun, are your stats detailed enough to notice?
 98 2015-11-09T00:38:31  <wangchun> Lightsword: If they go idle, reorg chain for double spend will be impossible :)
 99 2015-11-09T00:38:34  <phantomcircuit> Luke-Jr, that seems potentially dangerous
100 2015-11-09T00:38:52  <Luke-Jr> phantomcircuit: yes, it is
101 2015-11-09T00:39:06  <Luke-Jr> phantomcircuit: both ways are dangerous, but this works best in ordinary situations
102 2015-11-09T00:39:28  *** netg has joined #bitcoin-dev
103 2015-11-09T00:39:53  <Lightsword> wangchun, do you have contacts with btcchina antpool and bw pool admins? would you be able to see if they are using relayclient correctly?
104 2015-11-09T00:40:18  <wangchun> Lightsword: I don't know. I think bluematt is in the wechat group
105 2015-11-09T00:40:27  <gmaxwell> We should probably specific a flag that lets miners say they haven't verified the work, which could be used to gate this willness to reorg as well as cause SPV clients to ignore confirmations flagged that way. If used correctly it would prevent the massive security loss for spv clients that comes from non-verifying mining.
106 2015-11-09T00:40:43  <gmaxwell> er, s/willness/willingness/
107 2015-11-09T00:42:32  <Lightsword> wangchun, do you think you could message them about it? it’s esepcially important for bw pool since they seem to only mine on full GBT
108 2015-11-09T00:43:31  <wangchun> Lightsword: if you have wechat, i can add you to the group, where all pools' operators are there
109 2015-11-09T00:44:29  *** Keefe has quit IRC
110 2015-11-09T00:44:31  <Lightsword> wangchun, I could download it, one sec
111 2015-11-09T00:44:57  <midnightmagic> wechat provides no privacy capabilities.
112 2015-11-09T00:45:00  <phantomcircuit> Lightsword, hint: wechat is probably backdoored
113 2015-11-09T00:45:05  <BlueMatt> wangchun: almost everyone except btcchina ignores my wechat messages :/
114 2015-11-09T00:45:25  <wangchun> midnightmagic phantomcircuit: here no privacy either
115 2015-11-09T00:45:59  <Lightsword> phantomcircuit, backdoored as in can be monitored or backdoored as is will keylog me and steal my wallets?
116 2015-11-09T00:45:59  <midnightmagic> wangchun: incorrect, unless you mean #bitcoin-dev
117 2015-11-09T00:45:59  <wangchun> ircbot is watching us and recording every line we say
118 2015-11-09T00:46:32  <wangchun> midnightmagic: yes, this channel is logged, i think
119 2015-11-09T00:46:42  <midnightmagic> This channel states it is logged in the /topic.
120 2015-11-09T00:47:06  <midnightmagic> wechat does not tell everyone that all comms are monitored and if you type the word "democracy" in your message it is silently dropped
121 2015-11-09T00:47:37  <wangchun> midnightmagic: you read too much cnn or what?
122 2015-11-09T00:47:57  <wangchun> midnightmagic: download and type "democrazy" see it is dropped or otherwise?
123 2015-11-09T00:47:59  <midnightmagic> no, I have chinese friends who use it and I am on it.
124 2015-11-09T00:48:04  *** spinza has joined #bitcoin-dev
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126 2015-11-09T00:48:39  <BlueMatt> wangchun: fyi: I doubt the lack of relay network client mattered here, I have p2p peers with a bunch of miner ips, so it probably dont matter much
127 2015-11-09T00:49:05  <midnightmagic> wangchun: Also, I'm Canadian. CNN is a corporate propaganda mouth that lies to Americans.
128 2015-11-09T00:50:05  <wangchun> midnightmagic: I read too much propaganda everyday, it's enough. i think there is big misunderstanding between china and the west
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132 2015-11-09T00:51:30  <wangchun> BlueMatt: I just recognized the relay network was not working properly in the past few months
133 2015-11-09T00:51:57  <jtoomim> it was still working
134 2015-11-09T00:51:59  <BlueMatt> wangchun: yes, but i think you're benefiting rather significant from the relay network whether you're using the client or not
135 2015-11-09T00:52:02  <jtoomim> just not the way you wanted it to
136 2015-11-09T00:52:07  <phantomcircuit> BlueMatt, it might actually because of the bandwidth limits
137 2015-11-09T00:52:11  <BlueMatt> wangchun: because there is good peering within china
138 2015-11-09T00:52:26  <BlueMatt> phantomcircuit: its all in the same fucking dc
139 2015-11-09T00:52:44  <phantomcircuit> BlueMatt, depends on how the bandwidth limiting is setup :|
140 2015-11-09T00:52:46  <BlueMatt> phantomcircuit/wangchun: the relay network would improve your block relay in and out of china, and then you'd just rely on relay to your peers within china
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142 2015-11-09T00:54:22  <BlueMatt> phantomcircuit: meh, low rtt means even with high packet loss its fine
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145 2015-11-09T00:57:35  <wangchun> BlueMatt: There was no error message on the relay network client
146 2015-11-09T00:57:52  <wangchun> BlueMatt: It should say something if it cannot connect to the bitcoind
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149 2015-11-09T01:02:20  <BlueMatt> wangchun: are you sure? it should say something, but it may be like...a long time between when it says things
150 2015-11-09T01:02:33  <BlueMatt> (it'll tell you when the connection times out, which, on default linux, may be upwards of an hour)
151 2015-11-09T01:03:05  <wangchun> BlueMatt: It keeps printing a huge number of lines of tx send/receive
152 2015-11-09T01:03:11  <BlueMatt> yea
153 2015-11-09T01:03:42  <wangchun> BlueMatt: No error message..
154 2015-11-09T01:04:00  <Lightsword> wangchun, I hink the error is at the top of all the tx send/receive
155 2015-11-09T01:04:03  <Lightsword> it goes by pretty fast
156 2015-11-09T01:04:07  <wangchun> $ RelayNode/c++/relaynetworkclient 1.2.3.4 8333 123.56.6.255
157 2015-11-09T01:04:07  <wangchun> Using server 123.56.6.255
158 2015-11-09T01:04:07  <wangchun> Connected to relay node with protocol version sponsor printer
159 2015-11-09T01:04:08  <wangchun> Received transaction of size 226 from relay server
160 2015-11-09T01:04:19  <wangchun> 1.2.3.4 is a random ip
161 2015-11-09T01:04:24  <BlueMatt> Lightsword: no, its in the middle
162 2015-11-09T01:04:28  <Lightsword> oh
163 2015-11-09T01:04:30  <BlueMatt> it should be randomly halfway through
164 2015-11-09T01:04:30  <Lightsword> hmm
165 2015-11-09T01:04:40  <Lightsword> maybe I’m thinking of the success message
166 2015-11-09T01:05:17  <Lightsword> BlueMatt, maybe it would be a good idea for it to wait for bitcoind connection to be successful before printing tx send/receive
167 2015-11-09T01:05:25  <wangchun> Yes, there is a success message "Finished connect handshake with bitcoind"
168 2015-11-09T01:05:29  <Lightsword> and just have it print waiting for bitcoind or something like that
169 2015-11-09T01:06:00  <Lightsword> wangchun, you are on the latest version as well right?
170 2015-11-09T01:06:00  <wangchun> But if it failed, nothing is printed, and Send/receive transaction messages are printed as normal
171 2015-11-09T01:06:13  <wangchun> Lightsword: I think it is recent enough
172 2015-11-09T01:06:20  <Lightsword> you should git pull just to be sure
173 2015-11-09T01:06:27  <midnightmagic> wangchun: There is a great misunderstanding of *Chinese people* in the west. They unfortunately believe that every person is a representative of xenophobic Chinese foreign policy. Obviously this is false: people are people. I don't believe I've ever met a Chinese person I didn't like, in person. But government interference, you have to admit, is a fact of daily life. I also believe the careful m
174 2015-11-09T01:06:32  <wangchun> I checked out on August 24
175 2015-11-09T01:06:33  <midnightmagic> anagement of Chinese media takes its toll on our understanding of Chinese history. Ignoring *uniquely American* propaganda, it is possible to build an accurate picture of government censorship in China and it includes direct manipulation of social media including WeChat. Here is a Canadian group I trust describing the active censorship on WeChat: https://citizenlab.org/2015/07/tracking-censorshi
176 2015-11-09T01:06:36  <BlueMatt> Lightsword: probably
177 2015-11-09T01:06:39  <midnightmagic> p-on-wechat-public-accounts-platform/
178 2015-11-09T01:06:42  <midnightmagic> woops, that was longer than I meant. Sorry.
179 2015-11-09T01:07:02  <Lightsword> wangchun, yeah, you should update
180 2015-11-09T01:07:15  <Lightsword> wangchun, latest is oct 27th
181 2015-11-09T01:07:33  <wangchun> midnightmagic: This is #bitcoin-dev not for politics.
182 2015-11-09T01:08:20  <Lightsword> no idea why but wechat’s phone number validation is broken for me
183 2015-11-09T01:08:38  <midnightmagic> :-( Well why did you bring it up
184 2015-11-09T01:09:14  <midnightmagic> And if Bitcoin *pool ops* are using WeChat, then explicit discussion about Chinese censorship *of WeChat* is IMO *on topic*.
185 2015-11-09T01:10:09  <phantomcircuit> midnightmagic, i wasn't even talking about that; i was talking about how you have to install it on a phone with an active phone number to use it...
186 2015-11-09T01:10:42  <phantomcircuit> anyways
187 2015-11-09T01:10:45  <Lightsword> in the US a lot of bitcoin people use telegram
188 2015-11-09T01:10:49  <Lightsword> which does the same thing
189 2015-11-09T01:10:57  *** prosodyvVerreabC has quit IRC
190 2015-11-09T01:10:58  <phantomcircuit> BlueMatt, yes it should probably complain more and louder about not being connected to a bitcoind
191 2015-11-09T01:12:03  *** CodeShark has quit IRC
192 2015-11-09T01:12:08  <midnightmagic> phantomcircuit: No, he implied I watch too much CNN and that westerners have a misunderstanding of China.
193 2015-11-09T01:12:23  *** CodeShark has joined #bitcoin-dev
194 2015-11-09T01:12:31  * phantomcircuit doubts midnightmagic watches any cnn
195 2015-11-09T01:12:39  <midnightmagic> Which downplays the risk of using wechat to coordinate majority bitcoin hashrate
196 2015-11-09T01:12:49  <phantomcircuit> Lightsword, yes and i wouldn't suggest running that either
197 2015-11-09T01:12:59  <Lightsword> I think the client is open source at least
198 2015-11-09T01:13:08  <wangchun> midnightmagic: democrazy, like communist or christianism, are religions. you follow it, it is your freedom, but if you think anyone else who do not follow the same is evil, you are no different from the western missionaries a few hundreds years ago
199 2015-11-09T01:13:30  *** CodeShark_ has joined #bitcoin-dev
200 2015-11-09T01:13:49  <phantomcircuit> Lightsword, yes it's encrypted and the client is open source
201 2015-11-09T01:14:08  <midnightmagic> wangchun: I do not follow democracy. Nor do I think the Chinese oligarchy currently in power is evil just because they are undemocratic. Many English monarchs in the past were benign, for example.
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205 2015-11-09T01:16:16  <wangchun> midnightmagic: OK. That is fine. This is dev channcel, if you want to talk philosophy or religions, maybe we can find somewhere else.
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207 2015-11-09T01:16:49  <Lightsword> wangchun, do the other chinese pool operators speak english and/or ever get on IRC?
208 2015-11-09T01:17:53  <wangchun> Lightsword: I think they do speak some level of English, but I haven't seen any of them get on IRC.
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210 2015-11-09T01:21:04  <Lightsword> wangchun, oh, and just to check that your node isn’t rejecting relaynode due to the client version string do you see it when you do “bitcoin-cli getpeerinfo | grep "RelayNetworkClient””?
211 2015-11-09T01:22:04  <wangchun> Lightsword: no, the relay client is from whitelisted ip
212 2015-11-09T01:22:15  <midnightmagic> eh. the channel's been gutted anyway for quite some time.
213 2015-11-09T01:24:37  <Lightsword> hmm, latest f2pool block here http://poolbench.antminer.link/ looks like it might be a little better
214 2015-11-09T01:25:04  <Lightsword> wangchun, when you find a block do you do a submitblock to all of your bitcoind nodes at the same time over the RPC interface?
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216 2015-11-09T01:26:49  <wangchun> Lightsword: yes, some by submitblock, some by block command over p2p port 8333
217 2015-11-09T01:27:27  <midnightmagic> also, for what it's worth..
218 2015-11-09T01:27:34  *** ChanServ sets mode: +o midnightmagic
219 2015-11-09T01:27:39  *** ChanServ sets mode: -o midnightmagic
220 2015-11-09T01:27:42  <Lightsword> wangchun, so your stratum servers directly connect to the p2p network?
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223 2015-11-09T01:30:51  <wangchun> Lightsword: The mining servers do not run on stratum protocols, there are frontend proxies translate stratum to customzied binary protocol for mining servers on the backend, which have local bitcoind running, but local bitcoind has very limited number of peers only serves as a fall back.
224 2015-11-09T01:31:20  <wangchun> This prevents the ip address of backend from leaked to bad ddos guys
225 2015-11-09T01:31:31  <jtoomim> wangchun slightly off topic. i want to do some tests soon with relaying large blocks into china, but i'm 老外 and am having trouble getting a VPS in the mainland. do you have any ideas that might help me?
226 2015-11-09T01:32:00  <wangchun> the real block propagation is not by local bitcoind
227 2015-11-09T01:33:52  <phantomcircuit> wangchun, that is the "correct" design btw
228 2015-11-09T01:33:54  <phantomcircuit> bravo :)
229 2015-11-09T01:34:05  <Lightsword> wangchun, that sounds in some way to be similar to ckpool’s passthrough ddos mitigaion methods(which I use) but ckpool uses a modified stratum protocol for the frontend proxies with a single primary backend with database(the backend also supports regular stratum)
230 2015-11-09T01:34:33  <wangchun> jtoomim: i'm not sure. i think aliyun do accept foreign customers, given you do not operate a web site on port 80 with under a domain name.
231 2015-11-09T01:34:54  <wangchun> jtoomim: you may also search server hostings on taobao
232 2015-11-09T01:34:55  <jtoomim> ok
233 2015-11-09T01:35:22  <jtoomim> i think bluematt mentioned aliyun too, but i didn't realize he didn't have help getting it
234 2015-11-09T01:35:25  <jtoomim> i'll take a look
235 2015-11-09T01:35:34  <jtoomim> taobao is hard to use without alipay
236 2015-11-09T01:35:52  <jtoomim> alipay is hard to use without a citizen id card
237 2015-11-09T01:36:18  <jtoomim> but i might be able to get a friend to da that for me
238 2015-11-09T01:36:37  <wangchun> jtoomim: http://www.qcloud.com is from tencent
239 2015-11-09T01:36:42  <wangchun> but i thin aliyun is better
240 2015-11-09T01:37:03  <midnightmagic> jtoomim: Don't humiliate yourself with such terminology. It's not doing you any favours.
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315 2015-11-09T06:14:41  <frank1e> damn
316 2015-11-09T06:14:56  <frank1e> why does #bitcoin-dev not work with autojoin, but all other channels work with that.
317 2015-11-09T06:15:02  * frank1e puts on tinfoil hat
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319 2015-11-09T06:18:34  <Lightsword> works for me
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328 2015-11-09T06:38:10  <frank1e> mh
329 2015-11-09T06:38:21  <frank1e> my irc client must be drunk
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343 2015-11-09T07:06:59  <Luke-Jr> so right now, I'm searching N paths for bitcoin.conf and adding every single one as a solo pool in BFGMiner.. if I add cookie support, there won't necessarily be a bitcoin.conf - anything else I can look for reasonably that isn't likely to disappear in the future and won't accidentally false positive on /etc ? XD
344 2015-11-09T07:07:06  <Luke-Jr> maybe chainstate
345 2015-11-09T07:09:58  <gmaxwell> just look for the cookie file(s) in the same directories.
346 2015-11-09T07:10:18  <Luke-Jr> gmaxwell: it might not exist when BFGMiner is starting
347 2015-11-09T07:11:06  <gmaxwell> what will really screw you is when there is a stale one in another directory.
348 2015-11-09T07:11:39  <Luke-Jr> gmaxwell: that's why I'm adding all the directories that match, not just the first one ;)
349 2015-11-09T07:12:33  *** NLNico has joined #bitcoin-dev
350 2015-11-09T07:20:12  <Luke-Jr> actually, apparently I'm not. oh well
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368 2015-11-09T07:52:54  <Luke-Jr> … nm, I am
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374 2015-11-09T08:06:49  <Luke-Jr> bah, this is too messy
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435 2015-11-09T10:13:33  <btcdrak> jtoomim: saw your comments about block explorers. An easier path may be https://github.com/bitpay/insight
436 2015-11-09T10:14:04  <jtoomim> thanks, my brother is working on setting that up
437 2015-11-09T10:14:09  <jtoomim> or was, i think he's asleep now
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464 2015-11-09T11:17:13  <sturles> I have confirmed a new mempool trimming bug I reported here the other day, and finally made myself a github user to report it: https://github.com/bitcoin/bitcoin/issues/6972
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484 2015-11-09T12:20:32  <akrmn> Can someone at least point me to documentation on how to read the blkxxxxx.dat files?
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486 2015-11-09T12:22:49  <jonasschnelli> akrmn: IMO there is no documentation... expect from the source code.
487 2015-11-09T12:23:53  <akrmn> ok will try
488 2015-11-09T12:23:58  <jonasschnelli> But the files are relatively trivial (if you are familiar with the p2p serialization format).
489 2015-11-09T12:24:22  <akrmn> I can read one block, just I can't find the block right after it
490 2015-11-09T12:24:30  <akrmn> I am using hexdump just to get a feel
491 2015-11-09T12:24:43  <jonasschnelli> each blocks start with a index-header
492 2015-11-09T12:25:12  <jonasschnelli> check: https://github.com/bitcoin/bitcoin/blob/master/src/main.cpp#L1080
493 2015-11-09T12:25:45  <jonasschnelli> message start for mainnet: https://github.com/bitcoin/bitcoin/blob/master/src/chainparams.cpp#L86
494 2015-11-09T12:26:47  <jonasschnelli> <message-start> 4bytes, <block size> (32bit int), <block>
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496 2015-11-09T12:28:19  <akrmn> not sure what the index header is
497 2015-11-09T12:28:24  <akrmn> how large is it in size?
498 2015-11-09T12:29:41  <akrmn> I know the message-start is the magic number, then the block size, is that what you mean by index header?
499 2015-11-09T12:30:40  <akrmn> because I tried to use the block size to determine how many bytes to skip to get to the next block, but I didn't see the next magic number
500 2015-11-09T12:34:31  <jonasschnelli> message-start = index-header (4 bytes)
501 2015-11-09T12:35:03  <jonasschnelli> skip? just read 4 bytes, a 32bit int, skip amount of bytes from the just read 32bit int.
502 2015-11-09T12:35:18  <jonasschnelli> Wait! it's maybe not a 32bit int
503 2015-11-09T12:35:25  <jonasschnelli> it could be a Varint. Not sure on that.
504 2015-11-09T12:35:32  <jonasschnelli> Do you know how to handle satoshis varint?
505 2015-11-09T12:35:56  * jonasschnelli fires up a hexeditor
506 2015-11-09T12:37:16  <jonasschnelli> Yes. Looks like a Varint.
507 2015-11-09T12:37:50  <jonasschnelli> Check this if you need infos in how to deal with a Varint: https://en.bitcoin.it/wiki/Protocol_documentation#Variable_length_integer
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509 2015-11-09T12:44:26  <akrmn> I have one block with block size a6 71 00 00, so converting to int is 29094. The block number is 136948 and blockchain.info says it has 28.412109375 KB. So I should see the next block about 29000 bytes after...
510 2015-11-09T12:44:35  <akrmn> I will read more about the varint, thanks
511 2015-11-09T12:45:27  <jonasschnelli> akrmn: yes. And mind: each block start with the 4byte header (not only the file): F9BEB4D9 (mainnet)
512 2015-11-09T12:45:57  <jonasschnelli> So after you have skipped or read your 29094 bytes, you need to read another 4bytes of F9BEB4D9
513 2015-11-09T12:46:26  <akrmn> ok will try again
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572 2015-11-09T14:36:36  <jtoomim> testnet has been forked (BIP101).
573 2015-11-09T14:37:08  <jtoomim> {
574 2015-11-09T14:37:08  <jtoomim>     "hash" : "0000000000000169b59ac09e7d1bb1db5287a4a0567f80a7e0b1477fc67eb9c5",
575 2015-11-09T14:37:08  <jtoomim>     "confirmations" : 1,
576 2015-11-09T14:37:10  <jtoomim>     "size" : 1109130,
577 2015-11-09T14:37:12  <jtoomim>     "height" : 584265,
578 2015-11-09T14:37:14  <jtoomim>     "version" : 536870919,
579 2015-11-09T14:37:16  <jtoomim>     "merkleroot" : "f6005da73a7ab6bc6c6bb03e70dad1fa432c8305cd96c32b555d00c0558c3288",
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586 2015-11-09T14:42:32  <jonasschnelli> [15:36:36]  <jtoomim>	testnet has been forked (BIP101)., ... phantomcircuit: ramp up :)
587 2015-11-09T14:42:47  <paveljanik> $ btctest getblock 0000000000000169b59ac09e7d1bb1db5287a4a0567f80a7e0b1477fc67eb9c5
588 2015-11-09T14:42:48  <paveljanik> error code: -32603
589 2015-11-09T14:42:48  <paveljanik> error message:
590 2015-11-09T14:42:48  <paveljanik> Can't read block from disk
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593 2015-11-09T14:43:20  <jtoomim> paveljanik, you're using core, right?
594 2015-11-09T14:43:28  <paveljanik> yes
595 2015-11-09T14:43:47  <jtoomim> we're up to 584266 on BIP101/XT
596 2015-11-09T14:44:15  <jtoomim> i'm going to mine a few more BIP101 blocks, then switch over to mining with core and cause a reorg
597 2015-11-09T14:44:29  <jtoomim> and merger
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606 2015-11-09T14:54:46  <paveljanik> blockexplorers stuck...
607 2015-11-09T14:55:23  *** kgk has joined #bitcoin-dev
608 2015-11-09T14:55:28  <jtoomim> https://live.blockcypher.com/btc-testnet/block/0000000000000169b59ac09e7d1bb1db5287a4a0567f80a7e0b1477fc67eb9c5/
609 2015-11-09T14:55:43  <jtoomim> paveljanik, most of the discussion is happening in #bitcoinxt
610 2015-11-09T14:56:05  <jtoomim> most of the block explorers use Core and are on the short fork of the chain
611 2015-11-09T14:56:17  <jtoomim> they're not stuck, the chain is stuck
612 2015-11-09T14:56:27  <jtoomim> because nobody is mining on it
613 2015-11-09T14:56:40  <paveljanik> I understand...
614 2015-11-09T14:57:07  <jtoomim> the 20 minute diff reset will probably take 2 hours 15 minutes in this case, since i was mining with an advanced system clock
615 2015-11-09T14:57:20  <jtoomim> to fight another node that was mining with an adjustable system clock
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638 2015-11-09T15:25:23  <jouke> testnet forked? D'oh
639 2015-11-09T15:26:01  * jouke starts small amount of miners on "normal" fork
640 2015-11-09T15:26:36  <jtoomim> jouke, i'm going to switch back over to testnet soon to merge them
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651 2015-11-09T15:41:50  <jtoomim> hashrate on Core now
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668 2015-11-09T16:11:53  <jtoomim> ok, i'm starting to bring Core back up
669 2015-11-09T16:12:00  <jtoomim> block 584265 found
670 2015-11-09T16:12:28  <bsm1175321> From my reading of the core code, a block will be rejected if it contains a transaction that was seen in a previous block.  This isn't a double-spend (it has the same txid).  I'd like to accept such blocks because if the transaction/block rate goes up (related to proposals to turn the block-chain into a block-DAG), duplicates will be a fact of life.  Is there any good reason to reject such a block?
671 2015-11-09T16:14:23  *** matsjj has joined #bitcoin-dev
672 2015-11-09T16:17:23  <bsm1175321> Accepting it could also mean getting rid of orphans entirely, as long as the orphan doesn't contain a double-spend.
673 2015-11-09T16:19:26  *** MoALTz has joined #bitcoin-dev
674 2015-11-09T16:19:34  <adam3us> bsm117532: the accidental probability of that is so low to be basically impossible for practical purposes.
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680 2015-11-09T16:24:21  <bsm1175321> adam3us: currently, yes.  I'm looking to the future.
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705 2015-11-09T17:01:53  <Luke-Jr> harding: libblkmaker with BIP65 support will be 0.4.3 and 0.5.2
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745 2015-11-09T18:19:23  <harding> Luke-Jr: cool.  I'll update my open PR.  Thanks!
746 2015-11-09T18:20:13  <jtoomim> is there anyone here working on the v4 testnet fork?
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761 2015-11-09T18:48:28  <btcdrak> jtoomim have you generated a >1MB block yet?
762 2015-11-09T18:48:40  <jtoomim> yes, a few
763 2015-11-09T18:48:58  <jtoomim> we made one, went on for about 8 blocks, then i shut off the hashpower and went back to core
764 2015-11-09T18:49:03  <jtoomim> let it reorg
765 2015-11-09T18:49:14  <jtoomim> crashed a few block explorers during the reorg
766 2015-11-09T18:49:17  <btcdrak> ok so there are two chains now then. Will take a while for the original chain to adjust diff I suppose :-P
767 2015-11-09T18:49:25  <jtoomim> and then switched back to bip101
768 2015-11-09T18:49:35  <jtoomim> uh, it's testnet
769 2015-11-09T18:49:38  <jtoomim> it takes 20 minutes
770 2015-11-09T18:49:56  <jtoomim> http://23.253.174.52/xttestnetblocks.html
771 2015-11-09T18:50:10  <jtoomim> someone hacked that together, don't know who
772 2015-11-09T18:50:30  <jtoomim> the first big block isn't shown there because of the reorg
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787 2015-11-09T19:15:11  <jgarzik> 2015-11-09 19:14:37 Rescanning last 263999 blocks (from block 318269)...
788 2015-11-09T19:15:20  <jgarzik> I <heart> testnet + Bitcoin Core :)
789 2015-11-09T19:15:36  * jgarzik made the mistake of sync'ing, and then stopping at 99% sync'd
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820 2015-11-09T20:26:23  <erasmospunk> Trying to debug this signature 308500000000450221009802e19f86a3d348218a180599cd4488da687c250b850788b43427d277e4981002202a52418c497dd9ba9e5b97f1cb4de8b683e2ad9efe9f95f763022b23d2c5ee4e01
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822 2015-11-09T20:28:36  <erasmospunk> if I am not mistaken the length is decoded as 0x85 & 0x7f == 0x05
823 2015-11-09T20:29:01  <erasmospunk> is a length of 5 valid?
824 2015-11-09T20:29:31  <erasmospunk> as a DER signature
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826 2015-11-09T20:30:29  <erasmospunk> it fails with bitcoinj
827 2015-11-09T20:31:09  <tulip> where did you encounter it?
828 2015-11-09T20:31:14  <erasmospunk> actually the error is in bouncycastle
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833 2015-11-09T20:33:02  <erasmospunk> tulip: this sig? On the peercoin chain that forked because of it
834 2015-11-09T20:33:27  <erasmospunk> I am not a peercoin dev but got curious
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836 2015-11-09T20:41:39  <tulip> erasmospunk: it's a BER signature, not DER, so it would be invalid in the Bitcoin block chain. 0x45 == 69 which is the correct length of the two integers, it's just encoded a bit weirdly that's all.
837 2015-11-09T20:42:25  <erasmospunk> thanks tulip, you pointed me to the right direction :)
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841 2015-11-09T20:47:10  <tulip> erasmospunk: ASN.1 is a pretty poor choice for ECDSA signatures, ideally they should have been just two 256 bit integers and nothing more. here the integers are signed, for example, which is utterly pointless.
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843 2015-11-09T20:48:02  <erasmospunk> is this related to BIP66?
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845 2015-11-09T20:48:34  <erasmospunk> I remember there was an issue with OpenSSL's signatures
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874 2015-11-09T21:39:18  <jgarzik> w00t.  finally got a build of bitcoind going on OSX native here locally.  Way too much time fighting with homebrew.
875 2015-11-09T21:39:34  <jgarzik> Linux dev environment - so much nicer
876 2015-11-09T21:39:53  <tulip> where did you run into trouble?
877 2015-11-09T21:40:32  *** wraithm has quit IRC
878 2015-11-09T21:41:20  <jgarzik> tulip, homebrew and I disagree with how programs should be installed
879 2015-11-09T21:41:34  * jgarzik refuses to chown any /usr/local/ to his own user account
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882 2015-11-09T21:45:07  <bsm1175321> Join us tomorrow in NYC for BitDevs, presentations by Peter Todd - The good, bad, and ugly of proof-of-work, and Joseph Poon & Thaddeus Dryja - Lightning Network http://www.meetup.com/BitDevsNYC/events/226351844/
883 2015-11-09T21:45:12  *** ValicekB has joined #bitcoin-dev
884 2015-11-09T21:52:03  <jgarzik> Cool.  I'm in NYC this week.
885 2015-11-09T21:52:35  *** hamdi369 has joined #bitcoin-dev
886 2015-11-09T21:52:46  <hamdi369> Hi
887 2015-11-09T21:54:32  <hamdi369> I have a remote VPS UBUNTU server running bitcoind deamon, with appache and php5... how could I now make request via URL ?
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889 2015-11-09T21:57:22  <morcos> jgarzik: sdaftuar and i will be there as well
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909 2015-11-09T22:35:55  <lclc> what are the rules used in Bitcoin Core to pick the UTXOs for a new transactions?   oldest coins first?
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