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目錄

• 配置準備
• nginx版本和正向代理https的模塊的對應關系
• 配置nginx正向代理
• 解壓nginx，解壓模塊并重命名
• 安裝nginx
• 使用正向代理https的模塊
• 配置正向代理
• 創建nginx用戶，用來運行nginx
• 驗證正向代理

配置準備

正向代理，指的是通過代理服務器 代理瀏覽器/客戶端去重定向請求訪問到目標服務器 的一種代理服務。
正向代理服務的特點是代理服務器 代理的對象是瀏覽器/客戶端，也就是對于目標服務器 來說瀏覽器/客戶端是隱藏的。

nginx默認支持正向代理http，不支持https

nginx官方并不支持直接轉發https請求，nginx支持https需要ngx_http_proxy_connect_module模塊。github上開源了模塊 https://github.com/chobits/ngx_http_proxy_connect_module。不過維護的ngx_http_proxy_connect_module模塊的補丁也是有nginx版本限制的（目前維護了1.4.x~1.19.x版本）
可以在REDEME.md的Select patch中查看nginx版本和模塊的對應關系

nginx版本和正向代理https的模塊的對應關系

ls /root/ngx_http_proxy_connect_module/patch
proxy_connect_1014.patch            proxy_connect_rewrite_1015.patch
proxy_connect.patch                 proxy_connect_rewrite_1018.patch
proxy_connect_rewrite_1014.patch    proxy_connect_rewrite_102101.patch
proxy_connect_rewrite_101504.patch  proxy_connect_rewrite.patch

github上開源了模塊 https://github.com/chobits/ngx_http_proxy_connect_module

此處用的是nginx-1.17.6，對應proxy_connect_rewrite_1018.patch

配置nginx正向代理

下載后上傳到服務器

ls 
ngx_http_proxy_connect_module-master.zip    nginx-1.17.6.tar.gz

解壓nginx，解壓模塊并重命名

tar xf nginx-1.17.6.tar.gz
unzip ngx_http_proxy_connect_module-master.zip
mv ngx_http_proxy_connect_module-master ngx_http_proxy_connect_module
ls 
ngx_http_proxy_connect_module    nginx-1.17.6         ngx_http_proxy_connect_module-master.zip
nginx-1.17.6.tar.gz

安裝nginx

安裝源碼編譯工具包，nginx依賴包

yum -y install make gcc openssl openssl-devel pcre-devel zlib zlib-devel

進入nginx解壓后的目錄

cd nginx-1.17.6 
./configure
make && make install

使用正向代理https的模塊

查看nginx-1.17.6對應的https模塊的具體位置

ls /root/ngx_http_proxy_connect_module/patch/proxy_connect_rewrite_1018.patch

導入模塊，再次編譯安裝

patch -p1 < /root/ngx_http_proxy_connect_module/patch/proxy_connect_rewrite_1018.patch
./configure --add-module=/root/ngx_http_proxy_connect_module
 make && make install

配置正向代理

nginx默認安裝在/usr/local/nginx/

 cd /usr/local/nginx/

修改配置文件

 vim conf/nginx.conf    

在 #gzip on; 下添加配置

 #正向代理轉發http請求
server {
    #指定DNS服務器IP地址
    resolver 114.114.114.114;
    #監聽80端口，http默認端口80
    listen 80;
    #服務器IP或域名
        server_name  localhost;
    #正向代理轉發http請求
    location / {
        proxy_pass                 http://$host$request_uri;
        proxy_set_header           HOST $host;
        proxy_buffers              256 4k;
        proxy_max_temp_file_size   0k;
        proxy_connect_timeout      30;
        proxy_send_timeout         60;
        proxy_read_timeout         60;
        proxy_next_upstream error  timeout invalid_header http_502;
    }
}
#正向代理轉發https請求
server {
    #指定DNS服務器IP地址
    resolver 114.114.114.114;
    #監聽443端口，https默認端口443
    listen 443;
   #正向代理轉發https請求
   proxy_connect;
   proxy_connect_allow            443 563;
   proxy_connect_connect_timeout  10s;
   proxy_connect_read_timeout     10s;
   proxy_connect_send_timeout     10s;
   location / {
        proxy_pass http://$host;
        proxy_set_header Host $host;
   }
}

檢查配置文件是否有錯誤sbin/nginx -t

創建nginx用戶，用來運行nginx

useradd nginx

啟動服務

sbin/nginx

驗證正向代理

 curl -I http://www.baidu.com/ -v -x 127.0.0.1:80
 curl -I https://www.baidu.com/ -v -x 127.0.0.1:443

驗證正向代理http 200 ok

curl -I http://www.baidu.com/ -v -x 127.0.0.1:80
* About to connect() to proxy 127.0.0.1 port 80 (#0)
* ? Trying 127.0.0.1...
* Connected to 127.0.0.1 (127.0.0.1) port 80 (#0)
> HEAD http://www.baidu.com/ HTTP/1.1
> User-Agent: curl/7.29.0
> Host: www.baidu.com
> Accept: */*
> Proxy-Connection: Keep-Alive
>
< HTTP/1.1 200 OK
HTTP/1.1 200 OK
< Server: nginx/1.17.6
Server: nginx/1.17.6
< Date: Sun, 28 Aug 2022 02:05:33 GMT
Date: Sun, 28 Aug 2022 02:05:33 GMT
< Content-Type: text/html
Content-Type: text/html
< Content-Length: 277
Content-Length: 277
< Connection: keep-alive
Connection: keep-alive
< Accept-Ranges: bytes
Accept-Ranges: bytes
< Cache-Control: private, no-cache, no-store, proxy-revalidate, no-transform
Cache-Control: private, no-cache, no-store, proxy-revalidate, no-transform
< Etag: "575e1f7c-115"
Etag: "575e1f7c-115"
< Last-Modified: Mon, 13 Jun 2016 02:50:36 GMT
Last-Modified: Mon, 13 Jun 2016 02:50:36 GMT
< Pragma: no-cache
Pragma: no-cache
<
* Connection #0 to host 127.0.0.1 left intact

驗證正向代理https 200 ok

curl -I https://www.baidu.com/ -v -x 127.0.0.1:443
* About to connect() to proxy 127.0.0.1 port 443 (#0)
* ? Trying 127.0.0.1...
* Connected to 127.0.0.1 (127.0.0.1) port 443 (#0)
* Establish HTTP proxy tunnel to www.baidu.com:443
> CONNECT www.baidu.com:443 HTTP/1.1
> Host: www.baidu.com:443
> User-Agent: curl/7.29.0
> Proxy-Connection: Keep-Alive
>
< HTTP/1.1 200 Connection Established
HTTP/1.1 200 Connection Established
< Proxy-agent: nginx
Proxy-agent: nginx
<
* Proxy replied OK to CONNECT request
* Initializing NSS with certpath: sql:/etc/pki/nssdb
* ? CAfile: /etc/pki/tls/certs/ca-bundle.crt
? CApath: none
* SSL connection using TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256
* Server certificate:
* ? ? ? subject: CN=baidu.com,O="Beijing Baidu Netcom Science Technology Co., Ltd",OU=service operation department,L=beijing,ST=beijing,C=CN
* ? ? ? start date: 7月 05 05:16:02 2022 GMT
* ? ? ? expire date: 8月 06 05:16:01 2023 GMT
* ? ? ? common name: baidu.com
* ? ? ? issuer: CN=GlobalSign RSA OV SSL CA 2018,O=GlobalSign nv-sa,C=BE
> HEAD / HTTP/1.1
> User-Agent: curl/7.29.0
> Host: www.baidu.com
> Accept: */*
>
< HTTP/1.1 200 OK
HTTP/1.1 200 OK
< Accept-Ranges: bytes
Accept-Ranges: bytes
< Cache-Control: private, no-cache, no-store, proxy-revalidate, no-transform
Cache-Control: private, no-cache, no-store, proxy-revalidate, no-transform
< Connection: keep-alive
Connection: keep-alive
< Content-Length: 277
Content-Length: 277
< Content-Type: text/html
Content-Type: text/html
< Date: Sun, 28 Aug 2022 02:05:50 GMT
Date: Sun, 28 Aug 2022 02:05:50 GMT
< Etag: "575e1f7c-115"
Etag: "575e1f7c-115"
< Last-Modified: Mon, 13 Jun 2016 02:50:36 GMT
Last-Modified: Mon, 13 Jun 2016 02:50:36 GMT
< Pragma: no-cache
Pragma: no-cache
< Server: bfe/1.0.8.18
Server: bfe/1.0.8.18
<
* Connection #0 to host 127.0.0.1 left intact