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b13e7f2 blockchain_export can now export to a blocks.dat format (moneromooo-monero)
11db442 bootstrap_file: do not try to create a directory with an empty name (moneromooo-monero)
03bc610 hardfork: use DB transactions when reorganizing (moneromooo-monero)
439c455 hardfork: simplify work done on reload (moneromooo-monero)
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Also make the number of blocks endian independant, and add
support for testnet
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This will happen if the chosen output file does not have a
path specified
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It speeds up a lot, which can be significant when reorganizing
from the genesis block to create the hard fork data.
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There is no need to fully recalculate and rewrite state, just
refill state from the DB.
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5ea2f93 wallet2: really include non canonical outputs in dust sweep (moneromooo-monero)
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253ed76 core_rpc_server: add optional json decoded tx to COMMAND_RPC_GET_TRANSACTIONS (moneromooo-monero)
ca23c0e core_rpc_server: add a getblock RPC command, and fix print_block (moneromooo-monero)
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1ce2621 simplewallet: add a check_tx_key command (moneromooo-monero)
0f6d3aa simplewallet: hide start_mining behind --trusted-daemon (moneromooo-monero)
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It allows one to check the amount of monero sent to a particular
address in a particular transaction, given that transaction's tx key
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because it leaks your standard address
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df8a110 simplewallet: add a --trusted-daemon flag (moneromooo-monero)
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79c95c1 simplewallet: bump default mixin from 3 to 4 (moneromooo-monero)
ac90d48 from hard fork 2, all outputs must be decomposed (moneromooo-monero)
90ccad1 from hard fork 2, claim a quantized reward in coinbase (moneromooo-monero)
22b1570 cryptonote_format_utils: add a function to tell if an amount is canonical (moneromooo-monero)
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234f576 miniupnpc: quick fix for buffer overflow (moneromooo-monero)
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It allows enabling the rescan_spent command only for trusted
daemon
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As recommended in MRL-0004
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The wallet decomposes fully as of now too.
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The small leftover is carried forward
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http://talosintel.com/reports/TALOS-2015-0035/
reported by palexander on IRC
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ee27559 Update to compile with latest miniupnpc (warptangent)
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5d0cb73 unbound: do not try to link against libevent (moneromooo-monero)
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180bcde build: default to Berkeley DB for 32 bit and ARM (moneromooo-monero)
791d8cb db_bdb: fix hard fork keys (moneromooo-monero)
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cec92c4 hardfork: move an assert so it actually works (moneromooo-monero)
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5ac1632 gpg_keys: update my key with a later expiration date (moneromooo-monero)
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upnpDiscover() takes a new argument for TTL.
Use the suggested default of 2.
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It is now not needed anymore, as we use minievent instead
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Berkeley DB requires RECNO keys to be 32 bits, and forbids a key
value of 0.
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An unsigned quantity is always >= 0
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33affd2 blockchain: on hardfork 2, require mixin 2 at least if possible (moneromooo-monero)
434e0f4 hardfork: make the voting window a week (moneromooo-monero)
0a7421b hardfork: rescan speedup (moneromooo-monero)
fec98b8 hardfork: remove use of GNU extension for initializing object (moneromooo-monero)
4bbf944 blockchain: on hardfork 2, allow miners to claim less money than allowed (moneromooo-monero)
088bc56 hardfork: change window semantics to not count the newly added block (moneromooo-monero)
198f557 blockchain: use different hard fork settings for testnet and mainnet (moneromooo-monero)
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151c32d dns_utils: fix wrong asserts (moneromooo-monero)
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Add a block height before which version 1 is assumed
Use DB transactions
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So they can avoid dust if they so wish
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This allows knowing the hard fork a block must obey in order to be
added to the blockchain. The previous semantics would use that new
block's version vote to determine this hard fork, which made it
impossible to use the rules to validate transactions entering the
tx pool (and made it impossible to validate a block before adding
it to the blockchain).
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Braino.
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5b11a89 hardfork: most state now saved to the DB (moneromooo-monero)
0a54c3a hardfork: remove the "parts are copyright cryptonote" notices (moneromooo-monero)
e546f37 Add an RPC call and daemon command to get info on hard fork voting (moneromooo-monero)
d067131 blockchain: force a hardfork recalculation at load time (moneromooo-monero)
a717761 core: add consts where appropriate (moneromooo-monero)
8ffc508 core: moan when we think an update is needed to get latest hard fork info (moneromooo-monero)
f854984 blockchain: use the new hardfork class (moneromooo-monero)
62b1f74 New hardfork class (moneromooo-monero)
bed9a44 blockchain: add a couple missing includes (moneromooo-monero)
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There will be a delay on first load of an existing blockchain
as it gets reparsed for this state data.
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I coded the whole thing from scratch.
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Since the state isn't actually saved anywhere, as the archive
code isn't called in the new DB version.
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This keeps track of voting via block version, in order to decide
when to enable a particular fork's code.
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3c10239 unbound: use the mini event fallback implementation (moneromooo-monero)
4e138a0 dns_utils: remove unnecessary string conversion (moneromooo-monero)
f928468 dns_utils: factor the fetching code for different DNS record types (moneromooo-monero)
4ef0da1 dns_utils: simplify string handling and fix leak (moneromooo-monero)
ae5f28c dns_utils: add a const where possible (moneromooo-monero)
f43d465 dns_utils: lock access to the singleton (moneromooo-monero)
5990344 dns: make ctor private (moneromooo-monero)
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Using libevent seems to have high peaks of file descriptor use,
which can cause failure to create fds in other parts of bitmonerod.
The fallback implementation seems to run fine in a significantly
tighter file descriptor limit.
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b19456d Re-enable optimized slow-hash if someone is trying to compile w/MSVC (disabling it was unintentional) (Javier Smooth)
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This avoids races which could result in two objects being created
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This ensures one can't instanciate a DNSResolver object by
mistake, but uses the singleton. A separate create static
function is added for cases where a new object is explicitely
needed.
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(disabling it was unintentional)
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5dc53c2 wallet: use mutex protected random generation api (moneromooo-monero)
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813e758 blockchain: remove obsolete call to libc srand (moneromooo-monero)
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e20a3ae simplewallet: add a store-tx-keys option to set (moneromooo-monero)
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crypto::rand is now used for output selection
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To enable storing tx keys in the (now encrypted) wallet cache.
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d91eb8c wallet: only return tx keys via RPC if requested (moneromooo-monero)
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0a4bc84 Added ref10 shen_ed25519_ref code, which includes code that can replace crypto-ops with a version straight from Bernstein's ref 10 (ShenNoether)
0d70fdc revert to 776b4fc91a821be152f0f23e6873aabb78a72029 (ShenNoether)
b01f286 Added shen_ed25519_ref to crypto ops subfolder, the point is to directly have bitmonero's crypto code come from bernstein et al's ref 10 code (ShenNoether)
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3b5330e use correct unsigned type (roman)
59cc92b removed some gcc warnings. mainly unused variables. (roman)
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f197599 wallet: encrypt the cache file (moneromooo-monero)
98c76a3 chacha8: add a key generation variant that take a pointer and size (moneromooo-monero)
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6c99571 make tx keys available to the user (moneromooo-monero)
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To get the tx keys returned via RPC, set the "get_tx_key" or
"get_tx_keys" request field to true (defaults to false).
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crypto-ops with a version straight from Bernstein's ref 10
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have bitmonero's crypto code come from bernstein et al's ref 10 code
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It contains private data, such as a record of transactions.
The key is derived from the view and spend secret keys.
The encryption currently is one shot, so may require a lot of
memory for large wallet caches.
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They are also stored in the cache file, to be retrieved using
a new get_tx_key command.
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9672ac0 Revert "re-re-add Windows DNS bug fix, per c0de96f" (Riccardo Spagni)
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This reverts commit f4ba92bcccd3e016c6b5fdced079bf17d1b3f371.
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7c4d6f1 simplewallet: Use default log file name when executable's file path is unknown (warptangent)
b5b0f08 epee: Don't set log file name when process path name isn't found (warptangent)
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378d004 blockchain: mark two places where the new code differs from the old (moneromooo-monero)
73d42a7 blockchain: update cumulative size after block addition (moneromooo-monero)
4a44377 blockchain: remove dead code (moneromooo-monero)
3f9089a blockchain: do not try to add a tx the pool when it was nor taken out (moneromooo-monero)
769d5ef blockchain: fix off by 1 in timestamp median calculations (moneromooo-monero)
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Default to "simplewallet.log" in current directory when file path isn't
obtained from epee.
In this situation previously, it defaulted to the file name of ".log"
("" + ".log") in the current directory.
(Thanks to @sammy007 for reporting bug.)
An earlier version yet used "" + "/" + ".log" = "/.log", which resulted
in silently not logging in most cases, due to lack of permission.
Test:
PATH=$PATH:</path/to/simplewallet/folder> && simplewallet --wallet-file /dev/null
This results in epee not finding the executable's file path, so
simplewallet will now use a default log filename.
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If process path name isn't found, then leave log file name blank.
This also applies if a process name is found, but it's blank after
removing a trailing dot extension.
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And I'd like a comment from tewinget or someone else
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Block addition can fail, and the old code would not update the
cumulative size in that case.
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This is an unintended difference from the old code. Though I don't
think it can actually happen in practice with the current take_tx
implementation.
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The height function apparently used to return the index of
the last block, rather than the height of the chain. This now
seems to be incorrect, judging the the code, so we remove the
now wrong comment, as well as a couple +/- 1 adjustments
which now cause the median calculation to differ from the
original blockchain_storage version.
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7424cfc net_node: Use DNS resolver singleton (warptangent)
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471e8a3 blockchain_import: Add --input-file option (warptangent)
3ffda6e blockchain_import: Updates for naming consistency (warptangent)
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Each thread can use the same resolver.
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This option specifies the input file path for importing.
The default remains <data-dir>/export/blockchain.raw
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97c5faa blockchain_export: Add --output-file argument (warptangent)
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dde4dbb doc: hammer the fact that the raw file isn't blockchain.bin (moneromooo-monero)
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This option will export to the specified file path.
The default file path remains <data-dir>/export/blockchain.raw
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f4ba92b re-re-add Windows DNS bug fix, per c0de96f (Riccardo Spagni)
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d87a2d2 core_rpc_server: replace vector<bool> with vector<int> in RPC (moneromooo-monero)
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7764cd7 net_node: skimplify rate limit code, and log as appropriate (moneromooo-monero)
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e7b00ab core_rpc_server: find transactions in the pool as well as the blockchain (moneromooo-monero)
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aa5bc35 wallet: new rescan_spent command to update outputs' spent status (moneromooo-monero)
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vector<bool> causes issues in serialization with Boost 1.56
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This obsoletes the need for a lengthy blockchain rescan when
a transaction doesn't end up in the chain after being accepted
by the daemon, or any other reason why the wallet's idea of
spent and unspent outputs gets out of sync from the blockchain's.
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e63b854 blockchain_db: match tx addition semantics to original code (moneromooo-monero)
83bbea4 Add a is_key_image_spent daemon command and RPC call (moneromooo-monero)
35abef1 blockchain: remove dead code (moneromooo-monero)
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The original code removed key images from a tx from the blockchain
when an non to-key nor gen input was found in that tx. Additionally,
the remainder of the tx data was added to the blockchain only after
the double spend check passed.
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533acc3 blockchain_db: store key images for tx without outputs too (moneromooo-monero)
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4f19e68 blockchain: factor get_num_outpouts(amount) calls (moneromooo-monero)
275894c blockchain: always select random outs using triangular distribution (moneromooo-monero)
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2634307 daemon: omit extra set of <> in error message (moneromooo-monero)
0822933 daemon: print a decoded tx in print_tx (moneromooo-monero)
1d678b1 daemon: fix print_tx not find transactions (moneromooo-monero)
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a2d7a5f encrypted payment ids are now 64 bit, instead of 256 bit (moneromooo-monero)
e40cfc4 Encrypted payment IDs (moneromooo-monero)
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525bf58 Fix estimation of batch storage size when no blocks exist (warptangent)
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It has to stay constant as we get the blockchain lock for the
entire function. Avoids some unnecessary DB accesses.
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It was only used by the older blockchain_storage.
We also move the code to the calling blockchain level, to avoid
replicating the code in every DB implementation. This also makes
the get_random_out method obsolete, and we delete it.
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The string conversion already adds them
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in addition to the raw hex representation
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It was not even trying to
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Pros:
- smaller on the blockchain
- shorter integrated addresses
Cons:
- less sparseness
- less ability to embed actual information
The boolean argument to encrypt payment ids is now gone from the
RPC calls, since the decision is made based on the length of the
payment id passed.
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A payment ID may be encrypted using the tx secret key and the
receiver's public view key. The receiver can decrypt it with
the tx public key and the receiver's secret view key.
Using integrated addresses now cause the payment IDs to be
encrypted. Payment IDs used manually are not encrypted by default,
but can be encrypted using the new 'encrypt_payment_id' field
in the transfer and transfer_split RPC calls. It is not possible
to use an encrypted payment ID by specifying a manual simplewallet
transfer/transfer_new command, though this is just a limitation
due to input parsing.
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If there's no blocks in database (m_height == 0):
Don't assign incorrect block range to check.
Skip average block size check.
Test:
Run blockchain_converter with an existing source blockchain.bin and
a non-existent LMDB destination database.
The converter creates a BlockchainLMDB instance with zero height, due to
not being initialized with a genesis block, normally done by
Blockchain::init(). While different than the behavior of bitmonerod,
blockchain_import, and blockchain_export, the initialization hasn't been
strictly necessary.
The db batch size estimation normally uses an average block size, or a
default minimum block size, whichever is greater. In this case, as
there's no existing blocks to check for an average block size, the
default should be used.
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1e23b7a wallet: set watch-only flag to false when creating a new wallet (moneromooo-monero)
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16d71a3 Fix block_reward unit tests (Rostislav)
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1d1a77b slight modification to wordlist contributor tagline (as these contributors haven't used git to submit a PR, so we're creating the wordlist on their behalf (Riccardo Spagni)
ef7671a added Russian wordlist (Riccardo Spagni)
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haven't used git to submit a PR, so we're creating the wordlist on their behalf
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988fe1f wallet: new transaction construction algorithm (moneromooo-monero)
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a49d917 change unique_prefix_length=4 for japanese.h (David Vorick)
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I ran some tests, and all prefixes seem to be unique for len(3)
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6d6a985 add Germany and Italian wordlists (Riccardo Spagni)
514047d fix portuguese wordlist (Riccardo Spagni)
b5c0308 fix license on English wordlist (Riccardo Spagni)
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It should avoid a lot of the issues sending more than half the
wallet's contents due to change.
Actual output selection is still random. Changing this would
improve the matching of transaction amounts to output sizes,
but may have non obvious effects on blockchain analysis.
Mapped to the new transfer_new command in simplewallet, and
transfer uses the existing algorithm.
To use in RPC, add "new_algorithm: true" in the transfer_split
JSON command. It is not used in the transfer command.
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9b83a43 Update after recent simplewallet string changes (moneromooo-monero)
35378f1 simplewallet: fix context/string order mismatch (moneromooo-monero)
e62692f simplewallet: use unsigned long long instead of size_t in message (moneromooo-monero)
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boost doesn't support %zu for size_t, and the previous change
to %u could technically lose bits (though it would require splitting
a transfer into 4 billion transactions, which seems unlikely).
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8fe180a wallet: add boolean to always confirm transactions with the user (moneromooo-monero)
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This can be useful if you want to be given a veto over the tx fee,
or if you want to see what a tx fee would be without actually sending.
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3c13da5 boost doesn't like %zu for size_t, replace with %u (moneromooo-monero)
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e027831 console_handler: do not call a NULL function pointer (moneromooo-monero)
b87e066 console_handler: check for eof before trying to use input (moneromooo-monero)
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e20a4dd blockchain: fix testnet syncing (to not use blocks.dat) (moneromooo-monero)
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70ae2ee Fixed threadpool bug when running on single core systems. *Thanks to freshman for reporting bug. (NoodleDoodleNoodleDoodleNoodleDoodleNoo)
464dbe7 Fixed MINGW duplicate library errors when MSYS folder cannot be found. *Thanks to luigi1111 for reporting. (NoodleDoodleNoodleDoodleNoodleDoodleNoo)
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The exit_handler can be NULL.
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We'll get there without input if we exited
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These are mainnet blocks, and would cause syncing on testnet to
reject all incoming blocks.
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*Thanks to freshman for reporting bug.
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*Thanks to luigi1111 for reporting.
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bbb936d Use g++ flag "-pthread" instead of "-lpthread", where preferred (warptangent)
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CMake supports this through THREADS_PREFER_PTHREAD_FLAG.
Remove inclusion of pthread library in EXTRA_LIBRARIES, as the
individual CMakeLists.txt files which need pthread already require it
with CMAKE_THREAD_LIBS_INIT.
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35b62fb hyc accidentally typo'd...we shall never speak of this again (Riccardo Spagni)
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54c785d fixed ARM arch test to prevent breaking on short arch strings (Riccardo Spagni)
a4254a4 updated vl32 to current (Riccardo Spagni)
e6ab2df updated in-source lmdb (Riccardo Spagni)
ea08c76 open() flag O_DSYNC isn't on BSD, use O_SYNC (Thomas Winget)
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If the detected OS is FreeBSD, tell LMDB to compile with
MDB_DSYNC=O_SYNC instead of the default O_DSYNC, as BSD does not
implement this flag.
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71793ef Add batch support to BlockchainLMDB::get_output_key (warptangent)
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This allows blockchain_import to work with batch and verify modes enabled
(the default).
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Added option to cache tx-input verification results.
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Fixed OSX compilation issues due to random lmdb resize points.
Fixed infinite loop bug when calling core::get_block_template(..).
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Bockchain:
1. Optim: Multi-thread long-hash computation when encountering groups of blocks.
2. Optim: Cache verified txs and return result from cache instead of re-checking whenever possible.
3. Optim: Preload output-keys when encoutering groups of blocks. Sort by amount and global-index before bulk querying database and multi-thread when possible.
4. Optim: Disable double spend check on block verification, double spend is already detected when trying to add blocks.
5. Optim: Multi-thread signature computation whenever possible.
6. Patch: Disable locking (recursive mutex) on called functions from check_tx_inputs which causes slowdowns (only seems to happen on ubuntu/VMs??? Reason: TBD)
7. Optim: Removed looped full-tx hash computation when retrieving transactions from pool (???).
8. Optim: Cache difficulty/timestamps (735 blocks) for next-difficulty calculations so that only 2 db reads per new block is needed when a new block arrives (instead of 1470 reads).
Berkeley-DB:
1. Fix: 32-bit data errors causing wrong output global indices and failure to send blocks to peers (etc).
2. Fix: Unable to pop blocks on reorganize due to transaction errors.
3. Patch: Large number of transaction aborts when running multi-threaded bulk queries.
4. Patch: Insufficient locks error when running full sync.
5. Patch: Incorrect db stats when returning from an immediate exit from "pop block" operation.
6. Optim: Add bulk queries to get output global indices.
7. Optim: Modified output_keys table to store public_key+unlock_time+height for single transaction lookup (vs 3)
8. Optim: Used output_keys table retrieve public_keys instead of going through output_amounts->output_txs+output_indices->txs->output:public_key
9. Optim: Added thread-safe buffers used when multi-threading bulk queries.
10. Optim: Added support for nosync/write_nosync options for improved performance (*see --db-sync-mode option for details)
11. Mod: Added checkpoint thread and auto-remove-logs option.
12. *Now usable on 32-bit systems like RPI2.
LMDB:
1. Optim: Added custom comparison for 256-bit key tables (minor speed-up, TBD: get actual effect)
2. Optim: Modified output_keys table to store public_key+unlock_time+height for single transaction lookup (vs 3)
3. Optim: Used output_keys table retrieve public_keys instead of going through output_amounts->output_txs+output_indices->txs->output:public_key
4. Optim: Added support for sync/writemap options for improved performance (*see --db-sync-mode option for details)
5. Mod: Auto resize to +1GB instead of multiplier x1.5
ETC:
1. Minor optimizations for slow-hash for ARM (RPI2). Incomplete.
2. Fix: 32-bit saturation bug when computing next difficulty on large blocks.
[PENDING ISSUES]
1. Berkely db has a very slow "pop-block" operation. This is very noticeable on the RPI2 as it sometimes takes > 10 MINUTES to pop a block during reorganization.
This does not happen very often however, most reorgs seem to take a few seconds but it possibly depends on the number of outputs present. TBD.
2. Berkeley db, possible bug "unable to allocate memory". TBD.
[NEW OPTIONS] (*Currently all enabled for testing purposes)
1. --fast-block-sync arg=[0:1] (default: 1)
a. 0 = Compute long hash per block (may take a while depending on CPU)
b. 1 = Skip long-hash and verify blocks based on embedded known good block hashes (faster, minimal CPU dependence)
2. --db-sync-mode arg=[[safe|fast|fastest]:[sync|async]:[nblocks_per_sync]] (default: fastest:async:1000)
a. safe = fdatasync/fsync (or equivalent) per stored block. Very slow, but safest option to protect against power-out/crash conditions.
b. fast/fastest = Enables asynchronous fdatasync/fsync (or equivalent). Useful for battery operated devices or STABLE systems with UPS and/or systems with battery backed write cache/solid state cache.
Fast - Write meta-data but defer data flush.
Fastest - Defer meta-data and data flush.
Sync - Flush data after nblocks_per_sync and wait.
Async - Flush data after nblocks_per_sync but do not wait for the operation to finish.
3. --prep-blocks-threads arg=[n] (default: 4 or system max threads, whichever is lower)
Max number of threads to use when computing long-hash in groups.
4. --show-time-stats arg=[0:1] (default: 1)
Show benchmark related time stats.
5. --db-auto-remove-logs arg=[0:1] (default: 1)
For berkeley-db only. Auto remove logs if enabled.
**Note: lmdb and berkeley-db have changes to the tables and are not compatible with official git head version.
At the moment, you need a full resync to use this optimized version.
[PERFORMANCE COMPARISON]
**Some figures are approximations only.
Using a baseline machine of an i7-2600K+SSD+(with full pow computation):
1. The optimized lmdb/blockhain core can process blocks up to 585K for ~1.25 hours + download time, so it usually takes 2.5 hours to sync the full chain.
2. The current head with memory can process blocks up to 585K for ~4.2 hours + download time, so it usually takes 5.5 hours to sync the full chain.
3. The current head with lmdb can process blocks up to 585K for ~32 hours + download time and usually takes 36 hours to sync the full chain.
Averate procesing times (with full pow computation):
lmdb-optimized:
1. tx_ave = 2.5 ms / tx
2. block_ave = 5.87 ms / block
memory-official-repo:
1. tx_ave = 8.85 ms / tx
2. block_ave = 19.68 ms / block
lmdb-official-repo (0f4a036437fd41a5498ee5e74e2422ea6177aa3e)
1. tx_ave = 47.8 ms / tx
2. block_ave = 64.2 ms / block
**Note: The following data denotes processing times only (does not include p2p download time)
lmdb-optimized processing times (with full pow computation):
1. Desktop, Quad-core / 8-threads 2600k (8Mb) - 1.25 hours processing time (--db-sync-mode=fastest:async:1000).
2. Laptop, Dual-core / 4-threads U4200 (3Mb) - 4.90 hours processing time (--db-sync-mode=fastest:async:1000).
3. Embedded, Quad-core / 4-threads Z3735F (2x1Mb) - 12.0 hours processing time (--db-sync-mode=fastest:async:1000).
lmdb-optimized processing times (with per-block-checkpoint)
1. Desktop, Quad-core / 8-threads 2600k (8Mb) - 10 minutes processing time (--db-sync-mode=fastest:async:1000).
berkeley-db optimized processing times (with full pow computation)
1. Desktop, Quad-core / 8-threads 2600k (8Mb) - 1.8 hours processing time (--db-sync-mode=fastest:async:1000).
2. RPI2. Improved from estimated 3 months(???) into 2.5 days (*Need 2AMP supply + Clock:1Ghz + [usb+ssd] to achieve this speed) (--db-sync-mode=fastest:async:1000).
berkeley-db optimized processing times (with per-block-checkpoint)
1. RPI2. 12-15 hours (*Need 2AMP supply + Clock:1Ghz + [usb+ssd] to achieve this speed) (--db-sync-mode=fastest:async:1000).
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Fix compilation error
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- bugfix: prevent re-entering db->get when current buffer contains all possible index values.
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ea58576 Add missing file - i18n.cpp (moneromooo-monero)
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78b2eab Translatable strings for simplewallet (moneromooo-monero)
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fd73d9c Check and resize if needed at batch transaction start (warptangent)
f9e4afd blockchain_utilities: Increase debug statement's log level (warptangent)
699e4b3 blockchain_utilities: Pass expected number of blocks when starting batch (warptangent)
6e170c8 Optionally allow DB to know expected number of blocks at batch transaction start (warptangent)
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5d304ca Fix loop bug when calling core::get_block_template, causing calling thread to lock up. (NoodleDoodleNoodleDoodleNoodleDoodleNoo)
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The system is mostly the Qt system, but we don't use Qt to avoid
the dependencies.
See README.i18n for details.
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This currently only affects blockchain_import and blockchain_converter.
When the number of blocks expected for the batch transaction is
provided, make an estimate of the DB space needed. If not enough free
space remains, resize the DB.
The estimate is made based on:
- the average size of the last 500 blocks, or if larger, a min. block
size of 4k
- a factor for the expanded size a block occupies in the DB across the
sub-dbs/tables
- a safety factor (1.7) to allow for a "reasonable" average block size
increase over the batch
Increase the DB size by whichever is greater: the estimated size needed
or a minimum increase size, currently 128 MB.
The conservative factors in the estimate help in testing that the resize
occurs when needed, and without gratuitous size increases. For common
use, the safety factor and minimum increase size could reasonably be
increased.
For testing, setting DEFAULT_MAPSIZE (blockchain_db/lmdb/db_lmdb.h) to 1
<< 27 (128 MB) and recompiling will ensure DB resizes take place sooner
and more frequently.
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This will assist in a DB resize check.
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to lock up.
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369c7b3 blockchain_utilities/README.md: add workaround for resizing in batch mode (moneromooo-monero)
26970c7 blockchain_utilities/README.md: add high level "what is this about" (moneromooo-monero)
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8623492 Interpret x86_64 as x86-64 for architecture (moneromooo-monero)
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