Provide a 'NetworkInfo' DTO class (with associated nested DTO classes),
returned by the 'getnetworkinfo' RPC method call to bitcoind. This will
be used during startup of RpcService to determine if Bitcoin Core is
available and which version it is using. Add a unit test to round-trip a
sample NetworkInfo JSON response.
Also add the missing 'getbestblockhash' RPC method, which will be needed
by RpcService to determine the Bitcoin Core node health.
Selectively disable pubkey extraction from segwit inputs of a particular
tx at block height 660384 (2020-12-07), which spends spuriously created
segwit BSQ (later burned), to prevent a change in the DAO state hashes
from that point.
(Since a tx with a given ID can only appear on one chain, a fixed global
exclusion list of IDs should not cause any issues on testnet/regtest
versus mainnet. This is simpler than conditioning by block height.)
Prevent intermittent test failures, caused by a race between checking
whether the mock socket is closed upon accepting a new connection and
setting 'socketClosed' to true during shutdown. Waiting to accept and
then checking the flag needs to be done in a synchronized block.
Factor out shared construction logic to a new 'getBlockFromRawDtoBlock'
method in RpcService. Also add some 'NOPMD' comments in an attempt to
suppress unfixable Codacy warnings about qualified imports.
Factor out a new RpcService.extractPubKeyAsHex method, to take public
keys from the inputs of the raw transactions returned by the RPC client,
when building TxInput objects to incorporate into the DAO state. Enhance
the method to additionally support segwit (P2WPKH & P2SH-P2WPKH) inputs
(but only the first input for backwards compatibility - see code
comment). Also fix a bug when handling non-SIGHASH_ALL input signatures.
This will allow segwit BSQ to be used in proof-of-burn and issuance txs,
which need a public key associated with the tx to establish ownership of
it, when signing messages with a proof-of-burn or staking merit awarded
from a compensation issuance, respectively.
Also add unit tests for the factored-out method and add a missing RawTx
toString() method, to aid debugging the TxInput fields within the
processed block returned by RpcService.
Migrate RpcService over to the new block notification daemon and RPC
client based on jsonrpc4j. Drop in own DTO classes in place of the ones
defined by btcd-cli4j and rename requestBtcBlock & addNewBtcBlockHandler
to requestDtoBlock & addNewDtoBlockHandler respectively.
Also remove now redundant filtering from the logback config and update
grade-witness.
Wrap any exception that occurs during socket IO or within the supplied
BlockListener with a new 'BlockNotificationException'. This brings the
exception handling more in line with that of the old BtcdDaemonImpl and
makes it easier to match them downstream in FullNode.handleError.
Provide a new 'BitcoindDaemon' block notification socket server, to
replace 'com.neemre.btcdcli4j.daemon.BtcdDaemonImpl'. This starts a
single service thread to listen for raw block hashes on localhost port
512*, sent by the specified 'blocknotify' shell/batch script, delegating
to a pool of worker threads to run the supplied BlockListener handler.
Unlike the original BtcdDaemonImpl class, a call to the 'getblock' RPC
method is not made automatically to supply a complete block to the
handler, instead requiring a separate, manual BitcoindClient.getBlock
invocation from within RpcService.
Also provide unit tests using a mock ServerSocket + Socket.
TODO: Use the new Bitcoind(Client|Daemon) implementations in RpcService,
in place of btcdcli4j Btcd(Client|Daemon)Impl & remove the old library.
Create a new 'BitcoindClient' interface and a corresponding builder, to
replace the old 'com.neemre.btcdcli4j.core.client.BtcdClientImpl' class
from the btcdcli4j library. This is instantiated by jsonrpc4j using a
dynamic proxy. It provides only a cut down version of the bitcoind RPC
API, exposing the methods 'getblock', 'getblockcount' & 'getblockhash',
as they are the only ones currently being used by RpcService.
Add corresponding Jackson-annotated DTO classes to model the JSON
structures returned by bitcoind, very similar to the classes provided by
btcdcli4j. Note that we use Double instead of BigDecimal to represent
fractional fields (difficulties + coin amounts in BTC), as they have
more consistent Jackson (de)serialisation and appear to be able to
faithfully round-trip numeric fields produced by bitcoind. Also note
that doubles can faithfully represent any valid decimal BTC amount (that
is, with 8 d.p. of precision) up to 21 million.
For now, keep the old BtcdClientImpl instance used by RpcService in
place, as the btcdcli4j block notification daemon is dependent upon it
and would also need to be replaced.
Also add unit tests for BitcoindClient which test against sample regtest
responses, using a mock HttpURLConnection.
Add 'witness_v1_taproot' script type to the enum and proto.pb, so that
it doesn't cause any problems when Taproot is activated and the new
script type starts showing up in RPC getBlock(..) responses (including
possibly BSQ transactions).
Also change the Java enum order (which shouldn't cause any problems as
the ordinal isn't used directly in hashCode calculations) and add the
missing 'witness_unknown' enum value to pb.proto to bring it in sync.
The price feed service throws PriceRequestExceptions when switching
currencies, log those exceptions as warnings in the server and don't
pass them up to the CLI.
The server impl was there, but it is now needed by the trading
sim scripts (CLI) to get the price from the Bisq server instead
of the feed. (The server does not request prices more than
once a minute.)
This server log output was intended as an aid to api devs, but
is no longer needed after the change to posix-sytle method opts
with self explanatory labels (replacing the ambiguous positional
CLI method opts).
Two regtest trading simulation scripts are contained in this change:
- trade-simulation.sh goes through the steps of creating F2F payment
accounts for Bob & Alice, and each step of a trade from createoffer to
completion.
- limit-order-simulation.sh shows one way to trigger creation of an offer
when a limit price is reached.
Each script prints CLI commands just before they are run.
Both scripts depend on functions contained in supporting bash and python3
scripts.
Examples:
trade-simulation.sh
Simulate the entire trade protocol between Bob (taker) & Alice (maker),
where Alice buys 0.1 BTC from Bob, paying in Renminbi (CYN).
Note the script takes a country code (CN) not a currency code, so the
script can create the appropriate country based face to face payment accounts.
$ apitest/scripts/trade-simulation.sh -d buy -c cn -m 0.0 -a 0.1
limit-order.sh
Create a CAD/BUY 0.1 BTC order at mkt price margin of 0.0% if price falls to
or below 47900 CAD.
Note the script takes a country code (CA) not a currency code, so the script
can create the appropriate country based face to face payment accounts.
$ apitest/scripts/limit-order-simulation.sh -l 47900 -d buy -c CA -m 0.0 -a 0.1
Create a USD/SELL 0.1 BTC order at mkt price margin of 0.0% if price rises to
or above 37200 USD.
$ apitest/scripts/limit-order-simulation.sh -l 37200 -d sell -c US -m 0.0 -a 0.1
