我想要实现的目标是什么?
在我的ec2实例上设置socket.io,使用Nginx作为Web服务器,使用AWS Application Load Balancer,使用Route53解析DNS以指向我的应用程序负载均衡器。
以下是我在网上找到的解决方案列表:
在应用程序级别使用网络负载均衡器代替TCP 80,TCP 443和SSL。客户端套接字连接网址为https://mydomain:9000
,我不断收到错误websocket connection closed before connection could be established.
。目标群体已启用粘性。
使用应用程序负载均衡器,并将基于路径的规则添加到我的侦听器中以获取路径/socket.io
,并将其转发到启用了粘性的其他目标组:现在我尝试了443
协议和使用HTTPS协议的9000
端口。我得到了同样的结果。
使用我的负载均衡器的公共DNS作为套接字客户端连接的URL。并且结果仍然相同。
这是我的nginx配置文件:
# SSL configuration
listen 443 ssl default_server;
listen [::]:443 ssl default_server;
ssl_certificate /path/to/ssl.crt;
ssl_certificate_key /path/to/private_key.pem;
ssl_protocols TLSv1 TLSv1.1 TLSv1.2;
if ($ssl_protocol = "") {
rewrite ^ https://$server_name$request_uri? permanent;
}
server_name _;
location / {
# First attempt to serve request as file, then
# as directory, then fall back to displaying a 404.
proxy_set_header Upgrade $http_upgrade;
proxy_set_header Connection "upgrade";
proxy_http_version 1.1;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header Host $http_host;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-NginX-Proxy true;
proxy_pass http://localhost:9000;
}
现在,我应该告诉您,我已经强制套接字客户端使用websocket
传输,xhr-polling
给了我以下错误,我再也不知道如何处理它。
Failed to load https://my_domain/socket.io/?EIO=3&transport=polling&t=M3lhVWi: The value of the 'Access-Control-Allow-Origin' header in the response must not be the wildcard '*' when the request's credentials mode is 'include'. Origin 'http://localhost:4444' is therefore not allowed access. The credentials mode of requests initiated by the XMLHttpRequest is controlled by the withCredentials attribute.
如果有人可以帮助我解决建立套接字连接的任何一种情况,那么我真的很感激。另外,请询问您是否需要任何其他相关信息。
编辑以下是我设置socket.io
的方法const app = express();
const server = http.createServer(app);
const socketio = io(server, {
serveClient: false,
pingInterval: 10000,
pingTimeout: 5000,
cookie: false,
transport: ['websocket', 'xhr-polling']
});
socketConfig(socketio);
//and here's socketConfig
export function socketConfig(socketio) {
let localSockets = [];
socketio.on('connection', connectConfig(socketio, localSockets))
}
更新:我犯了一个愚蠢的错误,虽然这没有解决我的问题,但是因为socket.io和我的nodejs服务器正在侦听,所以客户端连接URL将是https://mydomain
在同一个港口。我现在正在使用Application Load Balancer,我收到了502错误。
更新:我检查了我的Nginx错误日志,发现了这个:
upstream prematurely closed connection while reading response header from upstream, client: 172.31.11.251, server: _, request: "GET /socket.io/?EIO=3&transport=websocket HTTP/1.1", upstream: "http://127.0.0.1:9000/socket.io/?EIO=3&transport=websocket", host: "mydomain"
答案 0 :(得分:0)
好的,我修好了,这对我来说是一个超级愚蠢的错误:
我的代码中有这个:
app.listen(config.port, config.ip, () => {
console.log(`express server listening on port ${config.port} in ${config.env} mode`);
});
而不是:
server.listen(config.port, config.ip, () => {
console.log(`express server listening on port ${config.port} in ${config.env} mode`);
});