Connection refused error with solana-test-validator up and running in a separate pane

[1776M]

Hi, I am sure this must be a simple thing but it has happened on two different ubuntu instances where I tried to run the example-helloworld app. I am sure there is something I am doing wrong.

I am using Ubuntu to try and get the example-helloworld up and running.

I have followed the steps to build and deploy the app, which has all worked fine in a terminal pane. I have also started a "solana-test-validator" in a separate terminal pane, together with "solana logs" in a third pane.

I have also ensured I have solana's web3.js installed. When I run the command "npm start" in the first pane I get the following error show below. The solana-test-validator process seems to get killed when I run "npm start". Is there a obvious fix for this, to stop it getting killed?

---

FetchError: request to http://localhost:8899/ failed, reason: connect ECONNREFUSED 127.0.0.1:8899
at ClientRequest. (/root/example-helloworld/node_modules/node-fetch/lib/index.js:1461:11)
at ClientRequest.emit (node:events:390:28)
at ClientRequest.emit (node:domain:475:12)
at Socket.socketErrorListener (node:_http_client:447:9)
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) {
type: 'system',
errno: 'ECONNREFUSED',
code: 'ECONNREFUSED'

[qpwo]

Try using node 16 instead of 17 if you're on 17

#375

[jacobtyq]

Ran into the same issue as what @1776M experienced. I was on node v17 and switching to node 16 works.

nvm use 17
> Now using node v17.3.0 (npm v8.3.0)
npm run start

> [email protected] start
> ts-node src/client/main.ts

Let's say hello to a Solana account...
FetchError: request to http://localhost:8899/ failed, reason: connect ECONNREFUSED ::1:8899
    at ClientRequest.<anonymous> (/Users/jacob/Repo/example-helloworld/node_modules/node-fetch/lib/index.js:1461:11)
    at ClientRequest.emit (node:events:390:28)
    at ClientRequest.emit (node:domain:475:12)
    at Socket.socketErrorListener (node:_http_client:442:9)
    at Socket.emit (node:events:390:28)
    at Socket.emit (node:domain:475:12)
    at emitErrorNT (node:internal/streams/destroy:164:8)
    at emitErrorCloseNT (node:internal/streams/destroy:129:3)
    at processTicksAndRejections (node:internal/process/task_queues:83:21) {
  type: 'system',
  errno: 'ECONNREFUSED',
  code: 'ECONNREFUSED'
}

Switched to either node v16 or v14

nvm use 16
> Now using node v16.13.1 (npm v8.1.2)

> [email protected] start
> ts-node src/client/main.ts

Let's say hello to a Solana account...
Connection to cluster established: http://localhost:8899 { 'feature-set': 3258470607, 'solana-core': '1.9.4' }
Using account <ACCOUNT_ID> containing 499999999.1546446 SOL to pay for fees
Using program <PROGRAM_ID>
Saying hello to <PROGRAM_ID>
<PROGRAM_ID> has been greeted 4 time(s)
Success

[ericlau-solid]

Thanks for this. Ran into same issue as well.

[iinstances]

Try using node 16 instead of 17 if you're on 17

#375

This solution worked for me.
Thanks a lot!

[Kubikasz]

I am with Mac m1 and tried 17 and it failed. But nvm use 16 worked.

[turanzv]

Try using node 16 instead of 17 if you're on 17

#375

Solution worked for me. Much appreciated!

[alanrichards86]

Can't seem to get it to work with any version sadly enough....

[0xPratik]

I am facing the same issue cant get it work with any version

[mariesco]

For me work this:

1. First install Solana from brew or with curl.
2. Clone the repository of solana.
3. git checkout v1.9.4.
4. cargo build --release --bin solana-test-validator
5. cd validator
6. ./solana-test-validator