前沿：正向代理：正向代理简单来说：客户端已知目标服务器地址但无法访问目标服务器（如：墙），从而先访问代理服务器，通过代理服务器访问目标服务器，返回结果。

正向代理：代理的是客户端

正向代理图示

正向代理配置：nginx.conf

#user  nobody;

worker_processes  1;//进程数

#error_log  logs/error.log;

#error_log  logs/error.log  notice;

#error_log  logs/error.log  info;

#pid        logs/nginx.pid;

events {

    worker_connections  1024;//最大连接数

}

http {

    include       mime.types;

    default_type  application/octet-stream;

    #access_log  logs/access.log  main;

    sendfile        on;

    #tcp_nopush     on;

    keepalive_timeout  65;

    #gzip  on;

server {

        listen 88; #监听端口

        resolver 183.60.82.98; #dns解析地址，

        //中国区域默认dns解析地址：114.114.114.114

        server_name  _;

        #charset koi8-r;

        #access_log  logs/host.access.log  main;

        location / {

             proxy_pass https://$host$request_uri; #设定http代理服务器的协议和地址

             proxy_set_header HOST $host;

             proxy_buffers 256 4k;

             proxy_max_temp_file_size 0k;

             proxy_connect_timeout 30;

             proxy_send_timeout 60;

             proxy_read_timeout 60;

             proxy_next_upstream error timeout invalid_header http_502;

            #root   html;

            #index  index.html index.htm;

        }

        error_page   500 502 503 504 /50x.html;

        location = /50x.html {

            root   html;

        }

    }

}

https正向代理：具体参考https://www.jianshu.com/p/eb70d1dc1559

https://blog.csdn.net/a3192048/article/details/89737337