Question

我正在将一个node.js应用程序从Heroku迁移到使用端口80上的WebSockets的AWS Elastic Beanstalk.WebSockets在AWS Elastic Beanstalk上返回301错误，但在Heroku上没有。

要初始化WebSocket连接，请单击Create a new note。

AWS Beanstalk http://default-environment.psgekxtsbd.us-west-2.elasticbeanstalk.com/

的Heroku https://murmuring-shelf-40601.herokuapp.com/

这就是我在服务器上设置WebSockets的方式。

const express = require('express');
const app = express();
require("express-ws")(app);
app.post("/service/create-account/", (req, res)=> {/*code in here*/});
app.ws('/:noteId/', function (ws, req) {/*code in here*/});
const port = process.env.PORT || 3000;
app.listen(port);

我尝试在.ebextensions文件夹中添加不同的配置，例如

files:
    "/etc/nginx/conf.d/01_websockets.conf" :
        mode: "000644"
        owner: root
        group: root
        content : |
            upstream nodejs {
                server 127.0.0.1:80;
                keepalive 256;
            }

            server {
                listen 80;

                large_client_header_buffers 8 32k;

                location / {
                    proxy_set_header X-Real-IP $remote_addr;
                    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
                    proxy_set_header Host $http_host;
                    proxy_set_header X-NginX-Proxy true;

                    # prevents 502 bad gateway error
                    proxy_buffers 8 32k;
                    proxy_buffer_size 64k;

                    proxy_pass http://nodejs;
                    proxy_redirect off;

                    # enables WS support
                    proxy_http_version 1.1;
                    proxy_set_header Upgrade $http_upgrade;
                    proxy_set_header Connection "upgrade";
                }
            }

并且

files:
    "/etc/nginx/conf.d/websocketupgrade.conf" :
        mode: "000755"
        owner: root
        group: root
        content: |
             proxy_set_header        Upgrade         $http_upgrade;
             proxy_set_header        Connection      "upgrade";

当我添加这些配置时，HTML无法加载错误ERR_NAME_NOT_RESOLVED。这是网址http://websocketsissue.us-west-2.elasticbeanstalk.com/

我使用Node.js的预定义配置将弹性beanstalk环境设置为Web服务器环境。我没有添加任何其他资源。

是否有使用AWS Elastic Beanstalk让WebSockets在端口80上工作？

更新

我能够让单实例环境工作，但不能实现负载均衡的自动缩放环境。

为了使单个实例起作用，我将以下文件添加到.ebextensions

container_commands:
  01_nginx_websocket_support:
    command: |
      sed -i '/\s*proxy_set_header\s*Connection/c \
              proxy_set_header Upgrade $http_upgrade;\
              proxy_set_header Connection "upgrade";\
          ' /tmp/deployment/config/#etc#nginx#conf.d#00_elastic_beanstalk_proxy.conf

Answer 1

我在这里找到了部分答案，https://scopestar.com/blog/aws/elasticbeanstalk/websockets/2016/10/21/enable-websockets-on-elasticbeanstalk-nginx-proxy.html

我在.ebextensions文件夹中添加了一个文件，其中包含以下内容，并针对单实例环境修复了该文件。

container_commands:
  01_nginx_websocket_support:
    command: |
      sed -i '/\s*proxy_set_header\s*Connection/c \
              proxy_set_header Upgrade $http_upgrade;\
              proxy_set_header Connection "upgrade";\
          ' /tmp/deployment/config/#etc#nginx#conf.d#00_elastic_beanstalk_proxy.conf

要让WebSockets在负载均衡的自动缩放环境中工作，我还需要执行以下操作

转到EC2信息中心
找到Elastic Beanstalk项目创建的负载均衡器
右键单击Load Balancer并单击Edit listener
将端口80的负载均衡器协议从HTTP更改为TCP并保存更改

使用端口80在AWS Elastic Beanstalk上发布WebSocket问题

1 个答案: