a38e723b40
catch OSError for proxy-related issues (and probably other low level networking)
```
19.52 | E | exchange_rate.CoinGecko | failed fx quotes: ProxyConnectionError(22, 'Can not connect to proxy localhost:9050 [The remote computer refused the network connection]')
Traceback (most recent call last):
File "...\Python310\site-packages\python_socks\async_\asyncio\ext\_proxy.py", line 59, in _connect
await self._stream.open_connection(
File "...\Python310\site-packages\python_socks\async_\asyncio\ext\_stream.py", line 61, in open_connection
self._reader, self._writer = await asyncio.open_connection(
File "...\Python310\lib\asyncio\streams.py", line 48, in open_connection
transport, _ = await loop.create_connection(
File "...\Python310\lib\asyncio\base_events.py", line 1076, in create_connection
raise exceptions[0]
File "...\Python310\lib\asyncio\base_events.py", line 1060, in create_connection
sock = await self._connect_sock(
File "...\Python310\lib\asyncio\base_events.py", line 969, in _connect_sock
await self.sock_connect(sock, address)
File "...\Python310\lib\asyncio\proactor_events.py", line 709, in sock_connect
return await self._proactor.connect(sock, address)
File "...\Python310\lib\asyncio\windows_events.py", line 826, in _poll
value = callback(transferred, key, ov)
File "...\Python310\lib\asyncio\windows_events.py", line 613, in finish_connect
ov.getresult()
ConnectionRefusedError: [WinError 1225] The remote computer refused the network connection
The above exception was the direct cause of the following exception:
Traceback (most recent call last):
File "...\electrum\exchange_rate.py", line 85, in update_safe
self._quotes = await self.get_rates(ccy)
File "...\electrum\exchange_rate.py", line 345, in get_rates
json = await self.get_json('api.coingecko.com', '/api/v3/exchange_rates')
File "...\electrum\exchange_rate.py", line 69, in get_json
async with session.get(url) as response:
File "...\Python310\site-packages\aiohttp\client.py", line 1140, in __aenter__
self._resp = await self._coro
File "...\Python310\site-packages\aiohttp\client.py", line 535, in _request
conn = await self._connector.connect(
File "...\Python310\site-packages\aiohttp\connector.py", line 543, in connect
proto = await self._create_connection(req, traces, timeout)
File "...\Python310\site-packages\aiohttp\connector.py", line 906, in _create_connection
_, proto = await self._create_direct_connection(req, traces, timeout)
File "...\Python310\site-packages\aiohttp\connector.py", line 1174, in _create_direct_connection
transp, proto = await self._wrap_create_connection(
File "...\Python310\site-packages\aiohttp_socks\connector.py", line 58, in _wrap_create_connection
stream = await proxy.connect(
File "...\Python310\site-packages\python_socks\async_\asyncio\ext\_proxy.py", line 47, in connect
await self._connect()
File "...\Python310\site-packages\python_socks\async_\asyncio\ext\_proxy.py", line 73, in _connect
raise ProxyConnectionError(e.errno, msg) from e
python_socks._errors.ProxyConnectionError: [Errno 22] Can not connect to proxy localhost:9050 [The remote computer refused the network connection]
```
Electrum - Lightweight Bitcoin client
Licence: MIT Licence
Author: Thomas Voegtlin
Language: Python (>= 3.8)
Homepage: https://electrum.org/
Getting started
(If you've come here looking to simply run Electrum, you may download it here.)
Electrum itself is pure Python, and so are most of the required dependencies, but not everything. The following sections describe how to run from source, but here is a TL;DR:
$ sudo apt-get install libsecp256k1-dev
$ python3 -m pip install --user ".[gui,crypto]"
Not pure-python dependencies
If you want to use the Qt interface, install the Qt dependencies:
$ sudo apt-get install python3-pyqt5
For elliptic curve operations, libsecp256k1 is a required dependency:
$ sudo apt-get install libsecp256k1-dev
Alternatively, when running from a cloned repository, a script is provided to build libsecp256k1 yourself:
$ sudo apt-get install automake libtool
$ ./contrib/make_libsecp256k1.sh
Due to the need for fast symmetric ciphers, cryptography is required. Install from your package manager (or from pip):
$ sudo apt-get install python3-cryptography
If you would like hardware wallet support, see this.
Running from tar.gz
If you downloaded the official package (tar.gz), you can run Electrum from its root directory without installing it on your system; all the pure python dependencies are included in the 'packages' directory. To run Electrum from its root directory, just do:
$ ./run_electrum
You can also install Electrum on your system, by running this command:
$ sudo apt-get install python3-setuptools python3-pip
$ python3 -m pip install --user .
This will download and install the Python dependencies used by
Electrum instead of using the 'packages' directory.
It will also place an executable named electrum in ~/.local/bin,
so make sure that is on your PATH variable.
Development version (git clone)
(For OS-specific instructions, see here for Windows, and for macOS)
Check out the code from GitHub:
$ git clone https://github.com/spesmilo/electrum.git
$ cd electrum
$ git submodule update --init
Run install (this should install dependencies):
$ python3 -m pip install --user -e .
Create translations (optional):
$ sudo apt-get install python3-requests gettext qttools5-dev-tools
$ ./contrib/pull_locale
Finally, to start Electrum:
$ ./run_electrum
Run tests
Run unit tests with pytest:
$ pytest electrum/tests -v
To run a single file, specify it directly like this:
$ pytest electrum/tests/test_bitcoin.py -v
Creating Binaries
Contributing
Any help testing the software, reporting or fixing bugs, reviewing pull requests and recent changes, writing tests, or helping with outstanding issues is very welcome. Implementing new features, or improving/refactoring the codebase, is of course also welcome, but to avoid wasted effort, especially for larger changes, we encourage discussing these on the issue tracker or IRC first.
Besides GitHub,
most communication about Electrum development happens on IRC, in the
#electrum channel on Libera Chat. The easiest way to participate on IRC is
with the web client, web.libera.chat.