dekokun

ISUCON歴

• 2013年から毎年参加
• 2013, 2014は本選出場したがその後は一度も本選に行けず…レベル上がったなぁ…
• 去年は社内でメンバー集めてRustで出て予選敗退
  • ISUCON に Rust で参加して予選敗退 - でこてっくろぐ ねお
• 初対面のメンバーでチーム組むのは今回が初めて

所属

dekokun

package main

import (
	"fmt"
	"github.com/marcw/cachecontrol"
	"strings"
)

func main() {
	ccs := []string{"public", "max-age=315360000"}

dekokun

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

• 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

[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

[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

 <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

package main

import (
	"encoding/json"
	"log"
	"net/http"
)

func rootHandler(w http.ResponseWriter, r *http.Request, cache bool) {

dekokun

#!/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

# /etc/network/interfaces
auto lo
iface lo inet loopback

auto eth0
allow-hotplug eth0
iface eth0 inet manual

auto wlan0
allow-hotplug wlan0