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@dekokun
dekokun / dekokun.md
Last active June 29, 2021 13:40
これがdekokun(ISUCONメンバー自己紹介)
@dekokun
dekokun / test.go
Last active October 24, 2017 04:14
https://github.com/isucon/isucon7-qualify/blob/5cc8fe024a76c823931abaeb28d7cc92d1ffd9bc/bench/src/bench/urlcache/cache.go#L61 を見て動作検証
package main
import (
"fmt"
"github.com/marcw/cachecontrol"
"strings"
)
func main() {
ccs := []string{"public", "max-age=315360000"}
@dekokun
dekokun / LICENSE
Last active April 17, 2017 02:45
http://dekotech.dekokun.info/entry/2017/04/14/210147
Copyright (c) 2017 dekokun
MIT License
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
permit persons to whom the Software is furnished to do so, subject to
@dekokun
dekokun / README.md
Last active September 2, 2016 06:41
Varnishのテストとかに使えるいい感じにオウム返しするサーバ
  • proxy的な働きをするサーバが後段に対してどのようなヘッダでリクエストを行うかを知りたい
  • 後段のサーバからどのようなヘッダが返った際にproxy的な働きをするサーバはどのような動きをするかを知りたい

という調査が簡単になるために作った。

機能

  • リクエストのクエリストリングがHTTPヘッダになる
    • 後段のサーバに任意のHTTPヘッダを返させてproxyの挙動を見ることができる
  • リクエストのHTTPヘッダはjsonになる
@dekokun
dekokun / client
Created June 15, 2016 12:00
[pid 62] 11:58:47.197343 rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 <0.000003>
[pid 62] 11:58:47.197384 mmap(NULL, 262144, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f2f700c2000 <0.000005>
[pid 62] 11:58:47.197487 rt_sigprocmask(SIG_SETMASK, ~[RTMIN RT_1], [], 8) = 0 <0.000010>
[pid 62] 11:58:47.197868 mmap(NULL, 8392704, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f2f6e971000 <0.000008>
[pid 62] 11:58:47.197930 mprotect(0x7f2f6e971000, 4096, PROT_NONE) = 0 <0.000007>
[pid 62] 11:58:47.197973 clone(child_stack=0x7f2f6f170fb0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tidptr=0x7f2f6f1719d0, tls=0x7f2f6f171700, child_tidptr=0x7f2f6f1719d0) = 64 <0.000020>
[pid 62] 11:58:47.198337 rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 <0.000004>
[pid 62] 11:58:47.198376 futex(0x680688, FUTEX_WAIT, 0, NULLProcess 64 attached
<unfinished ...>
[pid 64] 11:
@dekokun
dekokun / client
Last active June 15, 2016 11:54
[pid 64] 11:51:55.425444 epoll_wait(4, {{EPOLLIN|EPOLLOUT|EPOLLERR|EPOLLHUP|EPOLLRDHUP, {u32=992570104, u64=139634674330360}}, {EPOLLIN|EPOLLOUT|EPOLLRDHUP, {u32=992569912, u64=139634674330168}}}, 128, 0) = 2 <0.000026>
[pid 64] 11:51:55.426580 getsockopt(18, SOL_SOCKET, SO_ERROR, [0], [4]) = 0 <0.000135>
[pid 64] 11:51:55.427115 getsockname(18, {sa_family=AF_INET, sin_port=htons(37902), sin_addr=inet_addr("127.0.0.1")}, [16]) = 0 <0.000006>
[pid 64] 11:51:55.427175 getpeername(18, {sa_family=AF_INET, sin_port=htons(8001), sin_addr=inet_addr("127.0.0.1")}, [16]) = 0 <0.000003>
[pid 64] 11:51:55.428044 setsockopt(18, SOL_TCP, TCP_NODELAY, [1], 4) = 0 <0.000092>
[pid 64] 11:51:55.428570 write(18, "HEAD / HTTP/1.0\r\n\r\n", 19) = 19 <0.000042>
[pid 64] 11:51:55.429533 read(18, "2016-06-15 11:51:55.420574555 +0"..., 512) = 48 <0.000008>
[pid 64] 11:51:55.430129 read(18, "", 1488) = 0 <0.000005>
[pid 64] 11:51:55.430187 write(2, "2016/06/15 11:51:55 main.go:66: "..., 812016/06/15 11:51:5
@dekokun
dekokun / goroutine
Last active June 1, 2016 11:25
<unfinished ...>
[pid 27] <... epoll_wait resumed> {{EPOLLIN, {u32=555602640, u64=140299957293776}}}, 128, -1) = 1
[pid 27] futex(0x661e50, FUTEX_WAKE, 1 <unfinished ...>
[pid 28] <... futex resumed> ) = 0
[pid 27] <... futex resumed> ) = 1
[pid 28] sched_yield( <unfinished ...>
[pid 27] accept4(3, {sa_family=AF_INET6, sin6_port=htons(49356), inet_pton(AF_INET6, "::ffff:127.0.0.1", &sin6_addr), sin6_flowinfo=0, sin6_scope_id=0}, [28], SOCK_CLOEXEC|SOCK_NONBLOCK) = 5
[pid 28] <... sched_yield resumed> ) = 0
[pid 27] epoll_ctl(4, EPOLL_CTL_ADD, 5, {EPOLLIN|EPOLLOUT|EPOLLRDHUP|EPOLLET, {u32=555602448, u64=140299957293584}} <unfinished ...>
[pid 28] futex(0x661d90, FUTEX_WAKE, 1 <unfinished ...>
@dekokun
dekokun / parrot.go
Created March 28, 2016 07:39
http requestしたらheaderをjsonで返してくれるやつ
package main
import (
"encoding/json"
"log"
"net/http"
)
func rootHandler(w http.ResponseWriter, r *http.Request, cache bool) {
@dekokun
dekokun / pcurl.sh
Last active October 5, 2017 11:56
curlのproxy protocol対応
#!/bin/bash
# [nabeken/mikoi: mikoi is a HAProxy's proxy protocol enabler for command line tools.](https://github.com/nabeken/mikoi) のインストールが必要なので注意
# usage: curlの代わりにpcurlを使うだけで動くはずです
last_option=${@:$#}
# 最後のオプションを:で分割して最後のものからpathを取り除いたものがportっぽい
portlike=$(echo $last_option | awk -F":" '{print $NF }' | awk -F"/" '{print $1 }')
# 最後のオプションを:で分割して最初のものがschemeっぽい
@dekokun
dekokun / interfaces
Created October 22, 2015 12:40
ラズパイの無線LAN運用に成功したconfigファイル
# /etc/network/interfaces
auto lo
iface lo inet loopback
auto eth0
allow-hotplug eth0
iface eth0 inet manual
auto wlan0
allow-hotplug wlan0