在Azure Web服务上使用socket.io-redis [英] Using socket.io-redis on azure web service

问题描述

当前，我已将节点应用程序部署到Azure应用程序服务.我当前的应用服务计划有两个核心处理器.并且我在iisnode.yml文件中设置了nodeProcessCountPerApplication:2.现在，我已经实现用于实时更新到UI的socket.io功能.通过单个过程，它可以正常工作.当我使用nodeProcessCountPerApplication时:2问题开始.我收到以下错误-

Currently I have deployed a node application to azure app service. My current app service plan has two core processor. And I have set nodeProcessCountPerApplication: 2 in iisnode.yml file. Now I have implemented socket.io functionality for real time update to the UI. With single process it works fine. When I use nodeProcessCountPerApplication: 2 problem starts. I am getting the following error-

{"code":1,"message":"Session ID unknown"}

我尝试使用socket.io-redis解决此问题.这是使用redis-

I tried to solve this using socket.io-redis. Here is the code for using redis-

var io = require('socket.io')(server);
var redis = require('socket.io-redis');
io.adapter(redis({ host: 'localhost', port: 6379 }));

但更改后出现以下错误-

But getting the following error after the changes-

Error: Redis connection to localhost:6379 failed - connect EACCES 127.0.0.1:6379
    at Object.exports._errnoException (util.js:1008:11)
    at exports._exceptionWithHostPort (util.js:1031:20)
    at TCPConnectWrap.afterConnect [as oncomplete] (net.js:1080:14)

我想念的是什么.感谢您的时间.

What am I missing. Appreciate your time.

推荐答案

根据我的经验，当客户端使用XHR轮询传输并且服务器处于群集模式时，会发生此问题.因此，我认为最好的解决方案是仅使用WebSocket.为此，您可以按照以下步骤操作:

Per my experience, this problem happens when the client is using XHR-polling transport, and the server is in the cluster mode. So I think the best solution is use WebSocket only. To achieve that, you could follow the steps below:

1. 使用Azure门户启用WebSockets
   从Web应用程序刀片中单击Web应用程序，然后单击所有设置>应用程序设置.在"Web套接字"下，单击打开".然后单击保存.
   

2. 告诉Socket.IO仅使用WebSocket
   在客户端中替换以下代码
   var socket = io();

此代码:
var socket = io({transports:['websocket']});

希望它会有所帮助.如有任何其他疑问，请随时告诉我.

Hope it helps. Any further concern, please feel free to let me know.

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