| // How to compile: | |
| // clang++ -std=c++11 stun.cpp | |
| #include <arpa/inet.h> | |
| #include <netdb.h> | |
| #include <stdio.h> | |
| #include <sys/socket.h> | |
| #include <unistd.h> | |
| #include <array> | |
| #include <cstring> |
| // 'ε' symbol for empty symbol | |
| const EPSILON = 'ε'; | |
| // this is a set that tracks the fact it contains 'ε' seperatly | |
| class CustomSet { | |
| constructor() { | |
| this.set = new Set(); | |
| this.eps = false; | |
| } |
Wed 25 Apr 16:15:47 BST 2018
Setting up the experimental vsock/nfs between a host Linux machine and a KVM/QEMU client is not quite trivial - let's write it down...
over in kata containers, we use 9pfs to mount host side filesystems into the QEMU/KVM Virtual Machine.
What is strict aliasing? First we will describe what is aliasing and then we can learn what being strict about it means.
In C and C++ aliasing has to do with what expression types we are allowed to access stored values through. In both C and C++ the standard specifies which expression types are allowed to alias which types. The compiler and optimizer are allowed to assume we follow the aliasing rules strictly, hence the term strict aliasing rule. If we attempt to access a value using a type not allowed it is classified as undefined behavior(UB). Once we have undefined behavior all bets are off, the results of our program are no longer reliable.
Unfortunately with strict aliasing violations, we will often obtain the results we expect, leaving the possibility the a future version of a compiler with a new optimization will break code we th
Исходные данные: роутер имеет адрес 192.168.1.1, tor и i2pd подняты на 192.168.1.10 (если роутер достаточно мощный, можно поднять их прямо на нём, соответственно скорректировав адреса)
В LEDE для загрузки списка заблокированных доменов проще всего использовать поставляемую по умолчанию утилиту uclient-fetch. Необходимо лишь добавить ей поддержку SSL:
opkg update
opkg install libustream-mbedtls
Впрочем, вы можете использовать wget или curl, если предпочитаете. Особенности wget см. ниже.
| /* | |
| * nghttp2 - HTTP/2 C Library | |
| * | |
| * Copyright (c) 2016 Tatsuhiro Tsujikawa | |
| * | |
| * Permission is hereby granted, free of charge, to any person obtaining | |
| * a copy of this software and associated documentation files (the | |
| * "Software"), to deal in the Software without restriction, including | |
| * without limitation the rights to use, copy, modify, merge, publish, | |
| * distribute, sublicense, and/or sell copies of the Software, and to |
| /** | |
| * LL(1) parser. Building parsing table, part 1: First and Follow sets. | |
| * | |
| * NOTICE: see full implementation in the Syntax tool, here: | |
| * https://github.com/DmitrySoshnikov/syntax/blob/master/src/sets-generator.js | |
| * | |
| * by Dmitry Soshnikov <dmitry.soshnikov@gmail.com> | |
| * MIT Style License | |
| * | |
| * An LL(1)-parser is a top-down, fast predictive non-recursive parser, |
For this configuration you can use web server you like, i decided, because i work mostly with it to use nginx.
Generally, properly configured nginx can handle up to 400K to 500K requests per second (clustered), most what i saw is 50K to 80K (non-clustered) requests per second and 30% CPU load, course, this was 2 x Intel Xeon with HyperThreading enabled, but it can work without problem on slower machines.
You must understand that this config is used in testing environment and not in production so you will need to find a way to implement most of those features best possible for your servers.