- trampoline is enabled by default in config, to prevent download of `gossip_db`.
(if disabled, `gossip_db` will be downloaded, regardless of the existence of channels)
- if trampoline is enabled:
- the wallet can only open channels with trampoline nodes
- already-existing channels with non-trampoline nodes are frozen for sending.
- there are two types of trampoline payments: legacy and end-to-end (e2e).
- we decide to perform legacy or e2e based on the invoice:
- we use trampoline_routing_opt in features to detect Eclair and Phoenix invoices
- we use trampoline_routing_hints to detect Electrum invoices
- when trying a legacy payment, we add a second trampoline to the path to preserve privacy.
(we fall back to a single trampoline if the payment fails for all trampolines)
- the trampoline list is hardcoded, it will remain so until `trampoline_routing_opt` feature flag is in INIT.
- there are currently only two nodes in the hardcoded list, it would be nice to have more.
- similar to Phoenix, we find the fee/cltv by trial-and-error.
- if there is a second trampoline in the path, we use the same fee for both.
- the final spec should add fee info in error messages, so we will be able to fine-tune fees
The gossip db is loaded early when the network is started to save
time when the gui is locked and a wallet not yet loaded. Side effects
of the LNWallet to start peering when a channel db is loaded is
circumvented.
Before commit 46ffab0b55 all of these used to work:
./run_electrum -o signmessage tb1qeh090ruc3cs5hry90tev4fsvrnegulw8xssdzx "asdasd" -w ~/.electrum/testnet/wallets/test_segwit_2 --testnet
./run_electrum -o signmessage -w ~/.electrum/testnet/wallets/test_segwit_2 tb1qeh090ruc3cs5hry90tev4fsvrnegulw8xssdzx "asdasd" --testnet
./run_electrum -w ~/.electrum/testnet/wallets/test_segwit_2 -o signmessage tb1qeh090ruc3cs5hry90tev4fsvrnegulw8xssdzx "asdasd" --testnet
Since then, the last one no longer works.
Related: 9d2ede8796
- some commands expect a 'wallet_path' arg, while others expect 'wallet'
- 'wallet_path' in the end is supposed to be a str,
'wallet' in the end is supposed to be an Optional[Abstract_Wallet]
- initially, in the decorator, 'wallet' can be a str, in which case
the decorator replaces it with an Abstract_Wallet (from the daemon)
- Previously the decorator sometimes converted 'wallet_path' to 'wallet'.
This was because when called from the CLI it was always given 'wallet_path' (and never 'wallet),
while when called from JSON-RPC it was given either 'wallet' or 'wallet_path' (depending on command).
Now, the CLI also behaves as JSON-RPC, and hence 'wallet_path' and 'wallet' are fully separate.
- A bug is fixed where, when a command that only optionally takes a 'wallet' (such as gettransaction),
was called from the JSON-RPC with the arg present, it raised; and when called from CLI with the arg present
the arg was not actually passed to the command.
- A bug is fixed where if one command calls another command (that both take a 'wallet'),
it would raise (due to assuming 'wallet' is str and needs to be converted to Abstract_Wallet).
This fixes#6154.
-----
$ ./run_electrum --testnet daemon -d
$ ./run_electrum --testnet load_wallet -w ~/.electrum/testnet/wallets/default_wallet
$ curl --data-binary '{"id":"curltext","jsonrpc":"2.0","method":"gettransaction","params":{"txid":"9f43ff71ea2594873e4e7d15e61254a3661ff2df1af76325c854d9aa199550ce"}}' http://user:pass@127.0.0.1:7777
{"jsonrpc": "2.0", "result": "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", "id": "curltext"}
$ curl --data-binary '{"id":"curltext","jsonrpc":"2.0","method":"gettransaction","params":{"txid":"9f43ff71ea2594873e4e7d15e61254a3661ff2df1af76325c854d9aa199550ce", "wallet":"~/.electrum/testnet/wallets/default_wallet"}}' http://user:pass@127.0.0.1:7777
{"jsonrpc": "2.0", "error": {"code": -32000, "message": "'str' object has no attribute 'db'"}, "id": "curltext"}
previously, if GUI-related imports raised, the GUI would not start
but the process would not exit (e.g. asyncio event loop would go on)
Traceback (most recent call last):
File "...\electrum\electrum\daemon.py", line 517, in run_gui
gui = __import__('electrum.gui.' + gui_name, fromlist=['electrum'])
File "...\electrum\electrum\gui\qt\__init__.py", line 39, in <module>
from PyQt5.QtGui import QGuiApplication
ImportError: DLL load failed while importing QtGui: The specified module could not be found.
network.main_taskgroup restarts every time the proxy settings are changed,
many long-running tasks (some introduced with lightning) are not prepared for and do not want this.
When no (supported) authentication is passed to the JSON-RPC server,
return a 401 HTTP error code instead of 403. This indicates to the
client that authentication is required, and also requests that to be
sent using the "basic" method. The previously-returned code 403 is now
only returned if authentication is passed but not valid.
There are some JSON-RPC clients out there that only send authentication
after a 401 code requested it. Those fail to connect to the Electrum
RPC interface even if the correct password is configured. Those same
clients can e.g. connect to Bitcoin Core successfully, which already
implements logic matching this change.
See also https://stackoverflow.com/questions/3297048/403-forbidden-vs-401-unauthorized-http-responses.
The few other cases that used SimpleConfig.get_instance() now
either get passed a config instance, or they try to get a reference
to something else that has a reference to a config.
(see lnsweep, qt/qrcodewidget, qt/qrtextedit)
