This commit implements a command line script and a GUI
dialog to receive a payment using the BIP78 protocol,
by setting up an ephemeral hidden service.
It also deprecates the pre-existing inter-Joinmarket
protocol for payjoin payments, since we now have
both sending and receiving support for BIP78. Thus,
much code in Maker, Taker and client-daemon protocol
is removed, as is some documentation in docs/PAYJOIN.md.
Also the script `sendpayment.py` is altered to support
only the BIP78 variant.
The test in jmclient/test/test_payjoin now implements
BIP78 over a TCP connection, while the custom tests in
test/payjoinserver.py can support hidden service based
tests, but the latter is not included in the test suite
and may not always work (it is only for manual
investigations).
The following features of BIP78 are supported:
minfeerate
additionalfeeoutputindex - but *only* for single
change output transactions
maxadditionalfeecontribution
The receiver does not have nor request payment
output substitution.
Utxo selection is no longer sophisticated, instead
we only choose a single utxo to keep the size
increase of the transaction minimal. Thus UIH is
not addressed at the moment.
Errors returned are in line with BIP78.
Sequence numbers are checked by receiver, and
kept identical if uniform, otherwise respected.
Receiver uses transaction monitor to shut down
when the payment is seen.
The workflow is almost entirely implemented in
jmclient/payjoin.py and the command line script
is in scripts/receive-payjoin.py. The setup, including
configuration changes for Tor, are documented in
docs/PAYJOIN.md, including a user guide video linked.
In this commit, the jmclient.payjoin module now supports
sending payments to BIP21 URIs where the pj= parameter is
to a hidden service address.
Additionally, the test/payjoinclient and test/payjoinserver
modules are edited to support optionally testing payments to
an ephemeral hidden service.
To facilitate easier management by users and to
follow generally accepted standards, this PR moves
the following all to user home directory, subdir
.joinmarket :
joinmarket.cfg file
wallets/ directory
logs/ directory
cmtdata/ directory
commitmentlist file
User can override location with --datadir option.
An info message is added on startup showing location.
updated xenial and stretch dockerfiles since they bundle old versions of libsodium
refacatoring to make BlockchainInterface and BitcoinCoreNoHistoryInterface python2 compatible
add the -acceptnonstdtxn flag when invoking bitcoind for versions >= 0.19.0
refactor the use of nonlocal to make it compatible with python2
document the get_bitcoind_version method
No-history is a method for synchronizing a wallet by scanning the UTXO
set. It can be useful for checking whether seed phrase backups have
money on them before committing the time and effort required to
rescanning the blockchain. No-history sync is compatible with pruning.
The sync method cannot tell which empty addresses have been used, so
cannot guarentee avoidance of address reuse. For this reason no-history
sync disables wallet address generation and can only be used with
wallet-tool and for sending transactions without change addresses.
Replace links to instructions in original Wiki with updated
and corrected instructions within USAGE.md.
Add YIELDGENERATOR.md to docs/ with updated and corrected
instructions from original wiki.
Adam Gibson
Jules Comte
chris-belcher
Kristaps Kaupe
Jose Ortiz
k3tan172
Tim Akinbo
AlexCato
hyp-hen