Given a wallet with LN disabled,
and a bolt11 invoice (or a bip21 uri that only contains bolt11 but lacks a top-level address),
if the bolt11 invoice includes a fallback address,
we would previously just error "Lightning is disabled".
Now we offer the user to pay on-chain using the fallback address.
closes https://github.com/spesmilo/electrum/issues/8047
We would reject bip21 URIs that contained both an "address=" and a "lightning=" key with a bolt11 invoice,
where the bolt11 invoice did not contain a fallback address.
As opposed to using TestCaseForTestnet class, this allows having a single class
of many related unit tests, some using testnet and some using mainnet constants.
old traceback:
```
$ ./run_electrum --testnet -o setconfig rpchost qweasdfcsdf
$ ./run_electrum --testnet -o setconfig rpcport 7777
$ ./run_electrum --testnet daemon
E | daemon.Daemon | taskgroup died.
Traceback (most recent call last):
File "/home/user/wspace/electrum/electrum/daemon.py", line 419, in _run
async with self.taskgroup as group:
File "/home/user/wspace/electrum/packages/aiorpcx/curio.py", line 297, in __aexit__
await self.join()
File "/home/user/wspace/electrum/electrum/util.py", line 1335, in join
task.result()
File "/home/user/wspace/electrum/electrum/daemon.py", line 281, in run
await site.start() #
File "/home/user/wspace/electrum/packages/aiohttp/web_runner.py", line 121, in start
self._server = await loop.create_server(
File "/usr/lib/python3.10/asyncio/base_events.py", line 1471, in create_server
infos = await tasks.gather(*fs)
File "/usr/lib/python3.10/asyncio/base_events.py", line 1408, in _create_server_getaddrinfo
infos = await self._ensure_resolved((host, port), family=family,
File "/usr/lib/python3.10/asyncio/base_events.py", line 1404, in _ensure_resolved
return await loop.getaddrinfo(host, port, family=family, type=type,
File "/usr/lib/python3.10/asyncio/base_events.py", line 860, in getaddrinfo
return await self.run_in_executor(
File "/usr/lib/python3.10/concurrent/futures/thread.py", line 58, in run
result = self.fn(*self.args, **self.kwargs)
File "/usr/lib/python3.10/socket.py", line 955, in getaddrinfo
for res in _socket.getaddrinfo(host, port, family, type, proto, flags):
socket.gaierror: [Errno -3] Temporary failure in name resolution
```
If running in daemon mode, and daemon.taskgroup died, we were not stopping.
Instead, we should gracefully stop and exit the process.
To reproduce:
```
$ ./run_electrum --testnet -o setconfig rpcport 1
$ ./run_electrum --testnet daemon -v
```
BIP-0174 specifies using standard bip32-compliant serialization for extended keys.
> The 78 byte serialized extended public key as defined by BIP 32.
closes https://github.com/spesmilo/electrum/issues/8036
Change the logging message displayed when the config file can't be
parsed: include the underlying exception text, so that a user who is
attepting to edit the config manually can find and fix any errors.
