socket.io-redis trailing bytes - node.js

Question

I am using socket.io-emitter to broadcast an event to a set of channels with a for loop:
In the file, I have:
var io = require('socket.io-emitter')({
host: 'localhost',
port: 6379
});
module.exports = {
exampleFunction: function(req, res, next) {
var channels = req.param('channels'),
data = req.param('data');
for (var i=0; i<channels.length; i++) {
io.to(channels[i]).emit('example event', data)
}
}
}
In app.js, I have socket.io-redis:
io.adapter(socketio_redis({
host: 'localhost',
port: 6379,
pubClient: redis.createClient(6379, '127.0.0.1'),
subClient: redis.createClient(6379, '127.0.0.1')
}))
When I try to run exampleFunction, I get the following uncaught error in my console:
Error: 348 trailing bytes
at Object.decode (C:\Users\Website\socket.io-redis\node_modules\msgpack-js\msgpack.js:200:47)
at Redis.onmessage (C:\Users\Website\socket.io-redis\index.js:93:24)
at RedisClient.EventEmitter.emit (events.js:106:17)
at RedisClient.return_reply (C:\Users\Website\node_modules\redis\index.js:672:22)
at ReplyParser.<anonymous> (C:\Users\Website\node_modules\redis\index.js:309:14)
at ReplyParser.EventEmitter.emit (events.js:95:17)
at ReplyParser.send_reply (C:\Users\Website\node_modules\redis\lib\parser\javascript.js:300:10)
at ReplyParser.execute (C:\Users\Website\node_modules\redis\lib\parser\javascript.js:211:22)
at RedisClient.on_data (C:\Users\Website\node_modules\redis\index.js:534:27)
at Socket.<anonymous> (C:\Website\node_modules\redis\index.js:91:14)
I have seen that this is from msgpack. Have any of you encountered this error before? How did you resolve it?
Thank you.

Answer 1

On the main page of nm.socket.io-redis it is written:
Msgpack with giving us an error called "trailing bytes". After reading
up we realized that we could just use JSON.stringfy/JSON.parse instead
of msgpack.
Which looks like the error you are getting. As it is suggested there, try JSON.strigfy

Answer 2

Okay,
We found the solution. Refer to:
https://github.com/Automattic/socket.io-redis/issues/17
As you can see, socket.io-emitter requires you set return_buffers to true on your redis client.
Let me know if this works. Otherwise I can dif in the code some more.

Answer 3

This should answer your question.
https://github.com/Automattic/socket.io-redis/issues/17

Answer 4

This helped me with Error: -560815898 trailing bytes error:
npm install msgpack-js-v5
change file node_modules/socket.io-redis/index.js at the very top:
var msgpack = require('msgpack-js');
to
var msgpack = require('msgpack-js-v5');
now use code similar to this:
var adapter = require('socket.io-redis');
var pub = redis.createClient(6379, 'localhost');
var sub = redis.createClient(6379, 'localhost', { return_buffers: true });
io.adapter(adapter({pubClient: pub, subClient: sub}));
UPDATE:
In some days I stumbled upon an error bops.readUInt64BE is not a function, so eventually I switched msgpack-js-v5 to msgpack5 and now it works ok.