一段萬能的nginx介面反向代理配置

作為前端開發，每次除錯介面，把程式碼發到測試伺服器，是很費時費事的一件事情。
為了提高效率，想到了nginx反向代理來解決這一問題。

介面地址：
test.com

訪問地址：
localhost

最核心的問題就是，登入時，無法寫入cookie的問題，為了解決這個問題，走了不少彎路。

worker_processes  1;
events {
    worker_connections  1024;
}
http {
    include       mime.types;
    default_type  application/octet-stream;
    sendfile      on;
    keepalive_timeout 10;
    server {
        listen  80;
        server_name  localhost;
        
        location =/ {
            add_header X-Frame-Options SAMEORIGIN;
            root        D:/workspace/;
            index index.html;
        }

        location ~* .(html|htm|gif|jpg|jpeg|bmp|png|ico|txt|js|css|swf|woff|woff2|ttf|json|svg|cur|vue|otf|eot)$ {
            charset     utf-8;
            root        D:/workspace/;
            expires     3d;
        }
        
        location = /socket/v2 {
            proxy_pass   http://test.com;
            proxy_redirect off;
            proxy_http_version 1.1;
            proxy_set_header Upgrade $http_upgrade;
            proxy_set_header Connection "upgrade";
            proxy_set_header Host test.com;
            proxy_set_header X-Real-IP $remote_addr;
            proxy_set_header REMOTE-HOST $remote_addr;
            proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
            proxy_connect_timeout 30;
            proxy_send_timeout 30;
            proxy_read_timeout 60;
            proxy_buffer_size 256k;
            proxy_buffers 4 256k;
        }
        
        location / {
            proxy_pass   http://test.com;
            proxy_set_header Cookie $http_cookie;
            proxy_cookie_domain test.com localhost;
            proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
            proxy_set_header Host test.com;
            proxy_set_header X-Real-IP $remote_addr;
            proxy_set_header REMOTE-HOST $remote_addr;
        }
    }
}

核心程式碼在三行程式碼上：
proxy_set_header Cookie $http_cookie;
proxy_cookie_domain test.com localhost;
proxy_set_header Host test.com;

具體解釋我也是一知半解：
第一個是攜帶cookie，
第二個設定cookie 的 domain
第三個 設定真實的host

重要提示：以上3個的順序不要顛倒，否則代理失敗，我也不知道為什麼。

如何在手機上除錯呢？

手機上不可能直接訪問localhost,可以把手機和電腦連線到同一個網段，使用電腦的ip進行訪問。
但是這裡只代理了localhost,並沒有代理電腦的ip

所以，需要把是上面的server{…}拷貝一份，只需要把裡面的localhost全部改成你的電腦ip就可以了，最終程式碼：

worker_processes  1;
events {
    worker_connections  1024;
}
http {
    include       mime.types;
    default_type  application/octet-stream;
    sendfile      on;
    keepalive_timeout 10;
    server {
        listen  80;
        server_name  localhost;
        
        location =/ {
            add_header X-Frame-Options SAMEORIGIN;
            root        D:/workspace/;
            index index.html;
        }

        location ~* .(html|htm|gif|jpg|jpeg|bmp|png|ico|txt|js|css|swf|woff|woff2|ttf|json|svg|cur|vue|otf|eot)$ {
            charset     utf-8;
            root        D:/workspace/;
            expires     3d;
        }
        
        location = /socket/v2 {
            proxy_pass   http://test.com;
            proxy_redirect off;
            proxy_http_version 1.1;
            proxy_set_header Upgrade $http_upgrade;
            proxy_set_header Connection "upgrade";
            proxy_set_header Host test.com;
            proxy_set_header X-Real-IP $remote_addr;
            proxy_set_header REMOTE-HOST $remote_addr;
            proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
            proxy_connect_timeout 30;
            proxy_send_timeout 30;
            proxy_read_timeout 60;
            proxy_buffer_size 256k;
            proxy_buffers 4 256k;
        }
        
        location / {
            proxy_pass   http://test.com;
            proxy_set_header Cookie $http_cookie;
            proxy_cookie_domain test.com localhost;
            proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
            proxy_set_header Host test.com;
            proxy_set_header X-Real-IP $remote_addr;
            proxy_set_header REMOTE-HOST $remote_addr;
        }
    }
    server {
        listen  8080;
        server_name  xx.xx.xx.xx;
        
        location =/ {
            add_header X-Frame-Options SAMEORIGIN;
            root        D:/workspace/;
            index index.html;
        }

        location ~* .(html|htm|gif|jpg|jpeg|bmp|png|ico|txt|js|css|swf|woff|woff2|ttf|json|svg|cur|vue|otf|eot)$ {
            charset     utf-8;
            root        D:/workspace/;
            expires     3d;
        }
        
        location = /socket/v2 {
            proxy_pass   http://test.com;
            proxy_redirect off;
            proxy_http_version 1.1;
            proxy_set_header Upgrade $http_upgrade;
            proxy_set_header Connection "upgrade";
            proxy_set_header Host test.com;
            proxy_set_header X-Real-IP $remote_addr;
            proxy_set_header REMOTE-HOST $remote_addr;
            proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
            proxy_connect_timeout 30;
            proxy_send_timeout 30;
            proxy_read_timeout 60;
            proxy_buffer_size 256k;
            proxy_buffers 4 256k;
        }
        
        location / {
            proxy_pass   http://test.com;
            proxy_set_header Cookie $http_cookie;
            proxy_cookie_domain test.com xx.xx.xx.xx;
            proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
            proxy_set_header Host test.com;
            proxy_set_header X-Real-IP $remote_addr;
            proxy_set_header REMOTE-HOST $remote_addr;
        }
    }
}

訪問方法：

http://xx.xx.xx.xx:8080 即可

如果是打包工具生成增這個配置的話，可以用nodejs動態獲取你電腦的ip

function  getIPAdress() {      
    var  interfaces  =  require(`os`).networkInterfaces();      
    for (var  devName  in  interfaces) {            
        var  iface  =  interfaces[devName];            
        for (var  i = 0; i < iface.length; i++) {                 
            var  alias  =  iface[i];                 
            if (alias.family  ===  `IPv4`  &&  alias.address  !==  `127.0.0.1`  &&  !alias.internal) {                       
                return  alias.address;
            }            
        }      
    }  
}

所以，這裡貼出來一個動態生成nginx.config的工具

function buildNginxConfig(config) {

    function  getIPAdress() {      
        var  interfaces  =  require(`os`).networkInterfaces();      
        for (var  devName  in  interfaces) {            
            var  iface  =  interfaces[devName];            
            for (var  i = 0; i < iface.length; i++) {                 
                var  alias  =  iface[i];                 
                if (alias.family  ===  `IPv4`  &&  alias.address  !==  `127.0.0.1`  &&  !alias.internal) {                       
                    return  alias.address;                 
                }            
            }      
        }  
    }
    var cwd = process.cwd().replace(/\/g, `/`) + `/app`;
    var protocol = /https|443/.test(config.ip) ? `https` : `http`;

    var servers = [{
        browserIp: `localhost`,
        port: 80,
        root: cwd,
        serverIp: config.ip,
        protocol: protocol,
    }, {
        browserIp: getIPAdress(),
        port: 8080,
        root: cwd,
        serverIp: config.ip,
        protocol: protocol,
    }].map(function(item) {
        return `
    server {
        listen  ${item.port};
        server_name  ${item.browserIp};
        
        location =/ {
            add_header X-Frame-Options SAMEORIGIN;
            root        ${item.root};
            index index.html;
        }

        location ~* \.(html|htm|gif|jpg|jpeg|bmp|png|ico|txt|js|css|swf|woff|woff2|ttf|json|svg|cur|vue|otf|eot)$ {
            charset     utf-8;
            root        ${item.root};
            expires     3d;
        }
        
        location = /socket/v2 {
            proxy_pass   ${item.protocol}://${item.serverIp};
            proxy_redirect off;
            proxy_http_version 1.1;
            proxy_set_header Upgrade $http_upgrade;
            proxy_set_header Connection "upgrade";
            proxy_set_header Host ${item.serverIp};
            proxy_set_header X-Real-IP $remote_addr;
            proxy_set_header REMOTE-HOST $remote_addr;
            proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
            proxy_connect_timeout 30;
            proxy_send_timeout 30;
            proxy_read_timeout 60;
            proxy_buffer_size 256k;
            proxy_buffers 4 256k;
        }
        
        location / {
            proxy_pass   ${item.protocol}://${item.serverIp};
            proxy_set_header Cookie $http_cookie;
            proxy_cookie_domain ${item.serverIp} ${item.browserIp};
            proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
            proxy_set_header Host ${item.serverIp};
            proxy_set_header X-Real-IP $remote_addr;
            proxy_set_header REMOTE-HOST $remote_addr;
        }
    }`;
    }).join(`
`);
    var str = `worker_processes  1;
events {
    worker_connections  1024;
}
http {
    include       mime.types;
    default_type  application/octet-stream;
    sendfile      on;
    keepalive_timeout 10;
    ${servers}
}`;

    return str;
}

exports = module.exports = buildNginxConfig;

有了這個萬能反向代理，可以隨心所欲的玩轉任何網站介面了