海运的博客

配置文件开启：

stats socket /var/run/haproxy.sock mode 600 level admin 
stats timeout 2m

使用socat：

echo "help" | socat stdio /var/run/haproxy.sock

使用php：

<?php
$fp = stream_socket_client("unix:///var/run/haproxy.sock", $errno, $errstr);
if (!$fp) {
  echo "$errstr \n";
}
fwrite($fp, 'help'."\r\n");
$res = "";
while (!feof($fp)) {
  $res .= fgets($fp, 1024);
}
var_dump($res);

master sock，haproxy启动参数：

-S /var/run/haproxy-master.sock

echo "reload" | socat stdio /var/run/haproxy-master.sock

diff -uN s.c dns_server.c
--- s.c 2020-01-05 18:15:46.288965975 +0800
+++ dns_server.c        2020-01-05 16:57:02.891166416 +0800
@@ -352,10 +352,13 @@
        }
 
        /* add CNAME record */
+        /*
        if (request->has_cname) {
+                //request->ttl_cname = request->has_ipv4 ?  request->ttl_v4 : request->ttl_v6;
                ret |= dns_add_CNAME(packet, DNS_RRS_AN, request->domain, request->ttl_cname, request->cname);
                domain = request->cname;
        }
+        */
 
        /* add A record */
        if (request->has_ipv4 && request->qtype == DNS_T_A) {

一些函数：
进入查询处理：_dns_server_recv _dns_server_do_query _dns_server_process_cache
转发查询结果处理：dns_server_resolve_callback
返回客户端：_dns_server_request_complete _dns_reply _dns_add_rrs

安装dnsstamps：

apt-get install python3-pip
python3 -m pip install --user dnsstamps
export PATH=$PATH:~/.local/bin/ 

查看使用方法：

dnsstamp.py -h
dnsstamp.py dot -h

cloudflare-dns.com dns over tls构建sdns示例：

dnsstamp.py dot -a 1.1.1.1 -n cloudflare-dns.com -l -f
DoT DNS stamp
=============

DNSSEC: no
No logs: yes
No filter: yes
IP Address: 1.1.1.1
Hostname: cloudflare-dns.com
Hashes: []
Bootstrap IPs: []

sdns://AwYAAAAAAAAABzEuMS4xLjEAEmNsb3VkZmxhcmUtZG5zLmNvbQ

解析sdns：

dnsstamp.py parse sdns://AwYAAAAAAAAABzEuMS4xLjEAEmNsb3VkZmxhcmUtZG5zLmNvbQ

https://github.com/chrisss404/python-dnsstamps

N1盒子可用：

wget https://downloads.openwrt.org/releases/18.06.5/targets/armvirt/64/openwrt-18.06.5-armvirt-64-default-rootfs.tar.gz
docker import openwrt-18.06.5-armvirt-64-default-rootfs.tar.gz openwrt:18.06.5