namuyan

from socket import socket, gethostbyname, AF_INET, SOCK_STREAM
from threading import Thread, Lock
from time import sleep, time


def _thread(address, ports, opened, lock):
    while True:
        with lock:
            try:
                port = ports.pop()

namuyan

#!/bin/bash
#Script to quickly adjust the CPU clock rate of the Banana Pi M3

#  ____                                  _____ _   __  __ ____  
# |  _ \                                |  __ (_) |  \/  |___ \ 
# | |_) | __ _ _ __   __ _ _ __   __ _  | |__) |  | \  / | __) |
# |  _ < / _` | '_ \ / _` | '_ \ / _` | |  ___/ | | |\/| ||__ < 
# | |_) | (_| | | | | (_| | | | | (_| | | |   | | | |  | |___) |
# |____/ \__,_|_| |_|\__,_|_| |_|\__,_| |_|   |_| |_|  |_|____/ 
#Nargren, 2016.09.03.

namuyan

Frequensy

熱いので周波数下げるべし

Wifi

ぶっちゃけIP取得まで確認できたが接続できなかった。

1. sudo sh -c 'wpa_passphrase SSID PASSWORD >> /etc/wpa_supplicant/wpa_supplicant.conf'
2. wpa_supplicant -i wlan0 -c /etc/wpa_supplicant/wpa_supplicant.conf
3. sudo modprobe bcmdhd

namuyan

Login

• username: pi
• password: pi

/etc/apt/sources.list のリンクを修正する

sed -e 's/192.168.1.9/mirrors.tuna.tsinghua.edu.cn/g' /etc/apt/sources.list > tmp.txt

namuyan

let https = require('https'),
    httpProxy = require('http-proxy'),
    fs = require('fs');

var ssl = {
  key: fs.readFileSync('/etc/letsencrypt/live/pycontract.tk-0002/privkey.pem', 'utf8'),
  cert: fs.readFileSync('/etc/letsencrypt/live/pycontract.tk-0002/fullchain.pem', 'utf8')
};

namuyan

import socket
import selectors
import sys
import time

HOST = None
# HOST = "localhost"  # "::1"  # "127.0.0.1", "None"
PORT = 2000
BACKLOG = 5
BUFSIZE = 1024

namuyan

How to install plyvel on wondows

I use winodws10 64bit, so target is x86_64

Build Leveldb

• DL msys2-x86_64-20180531.exe https://www.msys2.org/
• DL cmake-3.14.2-win64-x64.msi https://cmake.org/download/
• DL leveldb-master https://github.com/google/leveldb
• make build folder

namuyan

An adoption of https://pypy.readthedocs.org/en/release-2.4.x/arm.html

prepeare

apt install qemu-user-static
apt-get install debootstrap
# apt-get install gcc-arm-linux-gnueabi
apt install schroot

namuyan

Usage: nuitka3 [--module] [--run] [options] main_module.py

Options:
  --version             show program's version number and exit
  -h, --help            show this help message and exit
  --module              Create an extension module executable instead of a
                        program. Defaults to off.
  --standalone          Enable standalone mode in build. This allows you to
                        transfer the created binary to other machines without
                        it relying on an existing Python installation. It

namuyan

source

https://lists.linuxfoundation.org/pipermail/lightning-dev/2019-September/002174.html https://twitter.com/chaintope/status/1177771818007982081?s=21

abstract

LNの脆弱性は、チャネルオープン時のチェックが問題。 通常、既存のBOLTの仕様でチャネルをオープンする際は、資金提供者がFunding Txを作成し、そのTXIDとアウトプットの番号を受信者に渡す。 受信者はその情報から最初のコミットメントTxの署名を作成し、資金提供者に返す。その後資金提供者はFunding Txをブロードキャストしてチャネルをオープンする。