x-yuri / A GCE instance with a bridge.md

Last active May 21, 2024 05:24

A GCE instance with a bridge

main.tf:

provider "google" {
  project = "PROJECT_ID"
}

resource "google_compute_instance" "test-bridge" {

x-yuri / getrandom() doesn't seem to be implemented on Debian 8.md

Created May 17, 2024 18:55

getrandom() doesn't seem to be implemented on Debian 8

`getrandom()` doesn't seem to be implemented on Debian 8

$ docker run --rm alpine:3.15 sh -euxc 'apk add ruby strace; strace ruby -e "p Random.urandom(1)"' |& grep random
+ strace ruby -e 'p Random.urandom(1)'
execve("/usr/bin/ruby", ["ruby", "-e", "p Random.urandom(1)"], 0x7ffe0d799eb0 /* 5 vars */) = 0
getrandom(0x7fb4fdfb86f0, 24, GRND_NONBLOCK) = -1 ENOSYS (Function not implemented)
open("/dev/urandom", O_RDONLY|O_NOCTTY|O_NONBLOCK|O_LARGEFILE|O_CLOEXEC) = 3
stat("/usr/lib/ruby/gems/3.0.0/specifications/default/securerandom-0.1.0.gemspec", {st_mode=S_IFREG|0644, st_size=993, ...}) = 0
open("/usr/lib/ruby/gems/3.0.0/specifications/default/securerandom-0.1.0.gemspec", O_RDONLY|O_LARGEFILE|O_CLOEXEC) = 5

x-yuri / geoipd.md

Last active May 19, 2024 17:28

geoipd

`geoipd`

download.sh:

#!/bin/sh -eu
dst=$1

mkparams() {
    printf '%s\n' "$@" | paste -sd\&

x-yuri / TCP|TLS echo client|server.md

Last active May 15, 2024 00:41

TCP/TLS echo client/server

#include <stdio.h>
#include <stdlib.h>
#include <sys/socket.h>
#include <arpa/inet.h>
#include <netinet/in.h>
#include <unistd.h>
#include <openssl/ssl.h>

x-yuri / gcc: the order of -l options.md

Last active May 11, 2024 13:29

gcc: the order of -l options

`gcc`: the order of `-l` options

a.c:

#include <openssl/ssl.h>
int main(int argc, char **argv) {
    SSL_CTX *ssl_server_ctx = SSL_CTX_new(TLS_server_method());
    return ssl_server_ctx ? EXIT_SUCCESS : EXIT_FAILURE;
}

x-yuri / TCP echo client|server.md

Last active May 14, 2024 12:30

TCP echo client/server

#include <stdio.h>
#include <stdlib.h>
#include <sys/socket.h>
#include <arpa/inet.h>
#include <netinet/in.h>
#include <unistd.h>
#include <string.h>

x-yuri / redis + hitch.md

Last active May 9, 2024 05:05

redis + hitch

`redis` + `hitch`

main.tf:

provider "google" {
  project = "PROJECT_ID"
}

resource "google_compute_instance" "test-redis" {

x-yuri / redis + spiped.md

Last active May 9, 2024 02:20

redis + spiped

`redis` + `spiped`

main.tf:

provider "google" {
  project = "PROJECT_ID"
}

resource "google_compute_instance" "test-redis" {

x-yuri / redis + stunnel (SSL + verify).md

Last active May 7, 2024 15:43

redis + stunnel (SSL + verify)

`redis` + `stunnel` (SSL + verify)

main.tf:

provider "google" {
  project = "PROJECT_ID"
}

resource "google_compute_instance" "test-redis" {

x-yuri / redis + stunnel (SSL + verify).md

Last active May 9, 2024 02:45

redis + stunnel (SSL + verify)

`redis` + `stunnel` (SSL + verify)

main.tf:

provider "google" {
  project = "PROJECT_ID"
}

resource "google_compute_instance" "test-redis" {