so that we don't need the extra permission.
also because phones these days have enough internal storage for
the headers; and maybe it's better even for security reasons to
store it there.
no upgrade path is provided for the headers stored on external storage,
we will litter the filesystem and leave them there. they will be
downloaded again into internal storage.
"target" is a 256 bit int, but the "bits" field in the block headers
that is used to represent target is only 32 bits.
We were checking PoW against the untruncated target value, which is a
slightly larger value than the one that can actually be represented,
and hence we would have accepted a slightly lower difficulty chain
than what the consensus requires.
mainly because the main "merchant" using bip70 is bitpay, and they
are failing all the PaymentAcks due to the tx is using RBF...
no need to confuse users.
follow-up 1686a97ece
we should not raise generic Exception when wanting to communicate with
the user. it makes distinguishing programming errors and messages hard,
as the caller will necessarily need to catch all Exceptions then
[trezor] connecting to device at bridge:hid...
[trezor] connected to device at bridge:hid...
Traceback (most recent call last):
File "...\electrum\electrum\base_wizard.py", line 255, in choose_hw_device
u = devmgr.unpaired_device_infos(None, plugin, devices=scanned_devices)
File "...\electrum\electrum\plugin.py", line 501, in unpaired_device_infos
client = self.create_client(device, handler, plugin)
File "...\electrum\electrum\plugin.py", line 374, in create_client
client = plugin.create_client(device, handler)
File "...\electrum\electrum\plugins\trezor\trezor.py", line 124, in create_client
client = self.client_class(transport, handler, self)
File "...\electrum\electrum\plugins\trezor\client.py", line 7, in __init__
ProtocolMixin.__init__(self, transport=transport)
File "...\Python36-32\lib\site-packages\trezorlib\client.py", line 444, in __init__
self.init_device()
File "...\Python36-32\lib\site-packages\trezorlib\client.py", line 454, in init_device
self.features = expect(proto.Features)(self.call)(init_msg)
File "...\Python36-32\lib\site-packages\trezorlib\client.py", line 115, in wrapped_f
ret = f(*args, **kwargs)
File "...\Python36-32\lib\site-packages\trezorlib\client.py", line 129, in wrapped_f
client.transport.session_begin()
File "...\Python36-32\lib\site-packages\trezorlib\transport\__init__.py", line 42, in session_begin
self.open()
File "...\Python36-32\lib\site-packages\trezorlib\transport\bridge.py", line 69, in open
raise TransportException('trezord: Could not acquire session' + get_error(r))
trezorlib.transport.TransportException: trezord: Could not acquire session (error=400 str=wrong previous session)
[DeviceMgr] error getting device infos for trezor: trezord: Could not acquire session (error=400 str=wrong previous session)
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