nginx代理websocket配置

╰半夏微凉° 2022-03-09 02:51 794阅读 0赞

思梦PHP 2019-02-26 00:01:00

**nginx正常只能代理http请求，如果想实现代理websocket的需求，需在请求中加入"****Upgrade****"字段，使请求从http升级为websocket。**

配置如下：

http {
     map $http_upgrade $connection_upgrade { default upgrade;
     '' close;
     }
     
     server {
     ...
     
     location /chat/ {
     proxy_pass http://backend;
     proxy_http_version 1.1;
     #以下配置添加代理头部： proxy_set_header Upgrade $http_upgrade; proxy_set_header Connection $connection_upgrade;
     }
     }

**实验案例：**

配置websockeet服务器，客户端通过代理连接服务器端。环境如下：

websocket服务端：192.168.1.110:8010

nginx ：192.168.1.131:8081

1：利用nodejs实现一个websocket服务端，监听8010端口，等待websocket链接。

安装nodejs与npm，并安装ws模块。（这里通过官网程序包实现）

[root@192_168_1_110 ~]# tar -zxvf node-v6.2.0-linux-x64.tar.gz
    [root@192_168_1_110 ~]# ln -s /root/node-v6.2.0-linux-x64/bin/node /usr/local/bin/node
    [root@192_168_1_110 ~]# ln -s /root/node-v6.2.0-linux-x64/bin/node /usr/local/bin/node
    [root@192_168_1_110 ~]# npm install -g ws
    [root@192_168_1_110 ~]# npm install -g wscat

编写websocket服务监听程序：

[root@192_168_1_110 ~]# vim server.js
    console.log("Server started");
    var Msg = '';
    var WebSocketServer = require('ws').Server
    , wss = new WebSocketServer({port: 8010});
    wss.on('connection', function(ws) {
    ws.on('message', function(message) {
    console.log('Received from client: %s', message);
    ws.send('Server received from client: ' + message);
    });
    });

启动websocket服务端：

[root@192_168_1_110 ~]# node server.js
    Server started

重新开启一个终端，使用wscat程序测试程序连接：

[root@192_168_1_110 ~]# /root/node-v6.2.0-linux-x64/lib/node_modules/wscat/bin/wscat --connect ws://192.168.1.110:8010
    connected (press CTRL+C to quit)
    > This is a websocket test...
    < Server received from client: This is a websocket test...
    >

查看服务端：

[root@192_168_1_110 ~]#node server.js
    Server started
    Received from client: This is a websocket test... ----从客户端接收到的信息

至此，websocket环境搭建完成。

2：配置nginx，代理110上的websocket链接。

[root@192_168_1_131 ~]# vim /opt/conf/nginx/nginx.conf
    ......
    http {
    ......
    map $http_upgrade $connection_upgrade {
    default upgrade;
    '' close;
    }
    .......
    include vhost/*.conf;
     
     
    [root@192_168_1_131 ~]# vim /opt/conf/nginx/vhost/nodejs.conf
    upstream nodejs{
    server 192.168.1.110:8010;
    }
    server {
    listen 8010;
    access_log /opt/logs/nginx/nodejs.log main;
    location / {
    proxy_pass http://nodejs;
    proxy_http_version 1.1;
    proxy_set_header Upgrade $http_upgrade;
    proxy_set_header Connection $connection_upgrade;
    }
    }

重新加载nginx配置：

[root@192_168_1_131 ~]# service nginx reload

这样配置过后，在nginx服务器上访问8010端口的请求，将会全部发送到后端192.168.1.110的8081端口上。

3：验证websocket请求代理：（把ws地址指向192.168.1.131:8010）

[root@192_168_1_110 ~]# /root/node-v6.2.0-linux-x64/lib/node_modules/wscat/bin/wscat --connect ws://192.168.1.131:8010
    connected (press CTRL+C to quit)
    > This is a websocket test through nginx proxying...
    < Server received from client: This is a websocket test through nginx proxying...
    >

查看服务端：

[root@192_168_1_110 ~]#node server.js
    Server started
    Received from client: This is a websocket test...
    Received from client: This is a websocket test through nginx proxying...

可以看到通过代理，websocket也能正常接收到客户端的请求信息。

本文转载地址：http://blog.51cto.com/icenycmh/1839566

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