Redis auth error with Node.js and socket.io

Question

I can connect my Node app to Redis just fine without a password, but when I add a password, nothing I do is right. Here's my code right now, taken right from an example: ``` var redis = require('redis') , sio = require('socket.io') , RedisStore = sio.RedisStore , io = sio.listen(); var port = 6379 , hostname = 'localhost' , password = 'password'; var redisClient = redis.createClient(port, hostname); redisClient.auth(password, function (err) { if (err) throw err; }); var redisSubscriber = redis.createClient(port, hostname); redisSubscriber.auth(password, function (err) { if (err) throw err; }); io.set('store', new RedisStore({ redisPub: redisClient, redisSub: redisSubscriber, redisClient: redisClient })); ``` On running the app, I get this stack trace: ``` /home/eric/christmas/sockets/node_modules/socket.io/node_modules/redis/index.js:506 throw callback_err; ^ Error: Ready check failed: ERR operation not permitted at RedisClient.on_info_cmd (/home/eric/christmas/sockets/node_modules/so…

Accepted Answer

I solved this by passing the redis module itself as an option to the RedisStore constructor.

```
io.set('store', new RedisStore({redis: redis, redisPub: redisClient, redisSub: redisSubscriber, redisClient: redisClient }));
```

This was necessary for the client objects to pass the `instanceof RedisClient` test and not be re-initialized without a password. Apparently, when `RedisStore` re-requires the redis module, redis clients created with the `createClient` method are members of some new class or something.

I figured this out by looking at a related issue someone was having on socket.io's issue #808.

Redis auth error with Node.js and socket.io

Solution

Problem