- 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
follow-up b28b3994c7
E | gui.qt.exception_window.Exception_Hook | exception caught by crash reporter
Traceback (most recent call last):
File "...\electrum\electrum\gui\qt\main_window.py", line 670, in new_wallet
self.gui_object.start_new_window(full_path, None)
File "...\electrum\electrum\gui\qt\__init__.py", line 245, in wrapper
return func(self, *args, **kwargs)
File "...\electrum\electrum\gui\qt\__init__.py", line 269, in start_new_window
wallet = self._start_wizard_to_select_or_create_wallet(path)
File "...\electrum\electrum\gui\qt\__init__.py", line 311, in _start_wizard_to_select_or_create_wallet
wizard.run('new')
File "...\electrum\electrum\base_wizard.py", line 115, in run
f(*args, **kwargs)
File "...\electrum\electrum\base_wizard.py", line 153, in new
self.choice_dialog(title=title, message=message, choices=choices, run_next=self.on_wallet_type)
File "...\electrum\electrum\gui\qt\installwizard.py", line 120, in func_wrapper
run_next(*out)
File "...\electrum\electrum\base_wizard.py", line 193, in on_wallet_type
self.run(action)
File "...\electrum\electrum\base_wizard.py", line 115, in run
f(*args, **kwargs)
File "...\electrum\electrum\base_wizard.py", line 201, in choose_multisig
self.multisig_dialog(run_next=on_multisig)
File "...\electrum\electrum\gui\qt\installwizard.py", line 120, in func_wrapper
run_next(*out)
File "...\electrum\electrum\base_wizard.py", line 200, in on_multisig
self.run('choose_keystore')
File "...\electrum\electrum\base_wizard.py", line 115, in run
f(*args, **kwargs)
File "...\electrum\electrum\base_wizard.py", line 225, in choose_keystore
self.choice_dialog(title=title, message=message, choices=choices, run_next=self.run)
File "...\electrum\electrum\gui\qt\installwizard.py", line 120, in func_wrapper
run_next(*out)
File "...\electrum\electrum\base_wizard.py", line 115, in run
f(*args, **kwargs)
File "...\electrum\electrum\base_wizard.py", line 275, in choose_hw_device
self._choose_hw_device(purpose=purpose, storage=storage)
File "...\electrum\electrum\base_wizard.py", line 358, in _choose_hw_device
self.choice_dialog(title=title, message=msg, choices=choices,
File "...\electrum\electrum\gui\qt\installwizard.py", line 120, in func_wrapper
run_next(*out)
File "...\electrum\electrum\base_wizard.py", line 359, in <lambda>
run_next=lambda *args: self.on_device(*args, purpose=purpose, storage=storage))
File "...\electrum\electrum\base_wizard.py", line 394, in on_device
self.derivation_and_script_type_dialog(f)
File "...\electrum\electrum\base_wizard.py", line 441, in derivation_and_script_type_dialog
self.derivation_and_script_type_gui_specific_dialog(
File "...\electrum\electrum\gui\qt\installwizard.py", line 120, in func_wrapper
run_next(*out)
File "...\electrum\electrum\base_wizard.py", line 393, in f
self.run('on_hw_derivation', name, device_info, derivation, script_type)
File "...\electrum\electrum\base_wizard.py", line 115, in run
f(*args, **kwargs)
File "...\electrum\electrum\base_wizard.py", line 490, in on_hw_derivation
self.on_keystore(k)
File "...\electrum\electrum\base_wizard.py", line 592, in on_keystore
self.run('show_xpub_and_add_cosigners', xpub)
File "...\electrum\electrum\base_wizard.py", line 115, in run
f(*args, **kwargs)
File "...\electrum\electrum\base_wizard.py", line 686, in show_xpub_and_add_cosigners
self.show_xpub_dialog(xpub=xpub, run_next=lambda x: self.run('choose_keystore'))
File "...\electrum\electrum\gui\qt\installwizard.py", line 106, in func_wrapper
out = func(*args, **kwargs)
File "...\electrum\electrum\gui\qt\installwizard.py", line 700, in show_xpub_dialog
layout = SeedLayout(xpub, title=msg, icon=False, for_seed_words=False)
File "...\electrum\electrum\gui\qt\seed_dialog.py", line 108, in __init__
self.seed_e = ShowQRTextEdit(config=self.config)
AttributeError: 'SeedLayout' object has no attribute 'config'
Sometimes we want its "remember path" behaviour but it does not make sense to
parent the dialog from main window. When so, caller code no longer needs to
get a reference to a main window.
Also rm last usages of get_parent_main_window().
If a tx cannot be constructed due to current fee settings, try to
create one with zero miner fees instead and let user to change the
fee later.
fixes#6755
Introduces LNRater, which analyzes the Lightning Network graph for
potential nodes to connect to by taking into account channel capacities,
channel open times and fee policies. A score is constructed to assign a
scalar to each node, which is then used to perform a weighted random
sampling of the nodes.
ThomasV