[SOLVED] Problem with Redis when migrating server to self hosted

Moralis General
#1

Hi I am following this guide (https://docs.moralis.io/docs/run-parse-server-locally) to run my server locally. I have followed all steps but when running “yarn dev” on the parse-server-migration folder I get the following error:

    at TCPConnectWrap.afterConnect [as oncomplete] (node:net:1161:16)
Emitted 'error' event on RedisClient instance at:
    at RedisClient.on_error (C:\Users\6inim\Documents\Blockchain\Wevelop\wevelop.io-v6-automate\Moralis-JS-SDK\node_modules\parse-server\node_modules\redis\index.js:342:14)
    at Socket.<anonymous> (C:\Users\6inim\Documents\Blockchain\Wevelop\wevelop.io-v6-automate\Moralis-JS-SDK\node_modules\parse-server\node_modules\redis\index.js:223:14)
    at Socket.emit (node:events:390:28)
    at Socket.emit (node:domain:475:12)
    at emitErrorNT (node:internal/streams/destroy:157:8)
    at emitErrorCloseNT (node:internal/streams/destroy:122:3)
    at processTicksAndRejections (node:internal/process/task_queues:83:21) {
  errno: -4078,
  code: 'ECONNREFUSED',
  syscall: 'connect',
  address: '127.0.0.1',
  port: 6379
}
error Command failed with exit code 7.

The error has something to do with Redis. Regarding it I had some doubts following the guide with the “REDIS_CONNECTION_STRING”. In the guide it says that the end result should look like this (‘redis://:@’). I dont know what it means by this. I typed: ‘redis://username:password’, but I do not know if I did correctly. It may be that the error has nothing to do with this. In that case could you tell me what the error may be? Thanks and best regards.

#2

It tries to connect to that localhost IP for redis, is there where the redis instance is running?

#3

You also have to add the server url or ip in that string

#4

For Redis a chose this option of the guide: “B. Use hosted Redis Enterprise Cloud (hosted)”.
I followed it but I dont know how to know where the redis instance is running. Where should I check?

#5

You should get the redis connection string directly from some interface

#6

Where can I get that from?

#7

In stackoverflow I have found that this may solve my problem:

let redisClient = redis.createClient({
 url: 'redis://redis:6379',
 legacyMode: true,
});

In which script of the parse-server-migration demo should I include this code?

#8

you have to set a redis first somewhere and from there to get that connection string that is similar to this one:

#9

With setting a redis you mean I have to install it folllowing this guide: https://redis.io/docs/getting-started/installation/install-redis-on-windows/ ?

Or just with copying this connection (“redis-cli -u redis://:@redis-17335.c12.us-east-1-4.ec2.cloud.redislabs.com:17335”) I got from redis and pasting it to the env. script in the parse-server-migration demo will work?

#10

You need a string like this one

#11

You can follow this tutorial - it shows what you need to put into your .env file.

#12

Okey I followed this guide and managed to set up the server succesfully, thank you!

But now I am having trouble with the client setup, connecting my dapp to this server. Before it worked perfectly, using a Moralis Dapp server and connecting it to my dapp in the index.js file using:

const serverUrl = "taken from Moralis dapp"; 
    const appId = "taken from Moralis dapp"; 
    Moralis.start({appId,serverUrl });

Now after creating my self hosted server I am using the same code, but replacing the serverUrl and appId values:

const serverUrl = "http://localhost:1337/server"; 
    const appId = "taken from value set in .env file from parse-migration-server demo"; 
    Moralis.start({appId,serverUrl });

The problem is that when I try to authenticate with metamask, metamask window appears, but when I try to log in I get the following error:

“POST http://localhost:1337/server/users 404 (Not Found)”

Did I do anything wrong? What should I change or try? Thank you!!

#13

there is a different code that you have to use for authentication when you self host, you will find examples in the tutorial

#14

Okey so I did “Moralis.start” correctly but need to change authentication now?

#15

this is how the authentication has to be used with a self hosted sever

you can also try to change the default timeout for requestMessage from 15 to a higher value

#16

I am using this code for the self hosted server, but my dapp is not working. Before when I used it with a Moralis server it did work, so maybe I am missing something like importing a package or Moralis version.
I am getting this errors:
"Uncaught (in promise) Error: XMLHttpRequest failed: “Unable to connect to the Parse API”
at handleError
“authentication.js:12 Uncaught (in promise) ReferenceError: account is not defined”
Here is my code simplified to address this issue:
HTML

  <head>
 <script src="https://cdn.jsdelivr.net/gh/ethereum/[email protected]/dist/web3.min.js"></script> 
 <script src="https://unpkg.com/moralis-v1/dist/moralis.js"></script>
 </head>
<body> <button class="menu-btn-login" id="menu-btn-login">Connect Wallet</button>
    <script src="authentication.js"></script>
</body>

JS

/* ----0.Initializing---- */
    const serverUrl = "http://localhost:1337/server"; 
    const appId = "Jensen1620ID"; 
    Moralis.start({appId,serverUrl });
    const web3 = new Web3(window.ethereum); 

/*----1.Authentication----*/
async function login(provider) {
    // Enable web3 to get user address and chain
    await Moralis.enableWeb3({ throwOnError: true, provider });
  
    if (!account) {
      throw new Error('Connecting to chain failed, as no connected account was found');
    }
    if (!chainId) {
      throw new Error('Connecting to chain failed, as no connected chain was found');
    }
    
    // Get message to sign from the auth api
    const { message } = await Moralis.Cloud.run('requestMessage', {
      address: account,
      chain: parseInt(chainId, 16),
      network: 'evm',
    });
    
    // Authenticate and login via parse
    await authenticate({
      signingMessage: message,
      throwOnError: true,
    });
  }
document.getElementById("btn-login").onclick = login('metamask');
#17

this is the account that is undefined?

#18

Yes, i would like to be the account of the user that clicks the login button from my dapp. Before I did so using:

 user = await Moralis.User.current();
address=user.get("ethAddress");

But I do not know how to do that using the Auth Api.

#19

This should be await Moralis.authenticate(...) for Vanilla JS.

account doesn’t seem to be declared in your code. You can look at this example.

#20

How you solved the Redis connection issue im facong same issue can you please help me in this?