N8N times out for WordPress API

[overholt]

I'm able to access https://www.****.com/wp-json/wp/v2/dealers from a browser or Postman but not from an HTTP Request node using get. It just times out. I've tried with authentication and without. My WordPress credentials don't seem to work either. I generated an app password for my user, but it rejects it with:

Couldn’t connect with these settings
ETIMEDOUT

This is a public URI anyway, so it should need authentication, right?

The connection timed out, consider setting the 'Retry on Fail' option in the node settings
Error details

From HTTP Request
Error code

ETIMEDOUT

Full message

connect ETIMEDOUT 64.34.166.70:443
Request

{ "headers": { "accept": "application/json,text/html,application/xhtml+xml,application/xml,text/;q=0.9, image/;q=0.8, /;q=0.7" }, "method": "GET", "uri": "https://www.****.com/wp-json/wp/v2/posts", "gzip": true, "rejectUnauthorized": true, "followRedirect": true, "resolveWithFullResponse": true, "followAllRedirects": true, "timeout": 300000, "encoding": null, "json": false, "useStream": true }
Other info
Item Index

0

Node type

n8n-nodes-base.httpRequest

Node version

4.2 (Latest)

n8n version

1.55.3 (Self Hosted)

Time

9/9/2024, 9:49:22 PM

Stack trace

NodeApiError: The connection timed out, consider setting the 'Retry on Fail' option in the node settings at Object.execute (/app/code/node_modules/n8n-nodes-base/nodes/HttpRequest/V3/HttpRequestV3.node.ts:1892:15) at processTicksAndRejections (node:internal/process/task_queues:95:5) at Workflow.runNode (/app/code/node_modules/n8n-workflow/src/Workflow.ts:1384:8) at /app/code/node_modules/n8n-core/src/WorkflowExecute.ts:1072:27 at /app/code/node_modules/n8n-core/src/WorkflowExecute.ts:1794:11

EDIT:
Could Cloudron possibly have these addresses blacklisted?
https://community.n8n.io/t/http-request-timeout-issue-with-an-api-but-works-fine-on-postman/12572/2
https://docs.n8n.io/manage-cloud/cloud-ip/

[nebulon]

So then this is not really n8n related. If you can curl other things fine but only not omrto.com then maybe they have blocked you or some other firewall in between blocks it. Cloudron does at least not block such connections as such.

[nebulon]

Cloudron itself does not block any servers as such. Can you reach those from the server via SSH and then check if you can reach those via the webterminal into the app container just to get some overview of where the issue might be. You can test with the following command:

curl -v https://www.omrto.com/wp-json/wp/v2/posts

[overholt]

@nebulon I ran the curl command from the root user via SSH and from the terminal inside the N8N app and in both cases it said:

root@localhost:~# curl -v --no-tcp-nodelay https://www.****.com/wp-json/wp/v2/posts

• Trying ...:443...
• connect to ... port 443 failed: Connection timed out
• Failed to connect to www.omrto.com port 443: Connection timed out
• Closing connection 0
  curl: (28) Failed to connect to www.omrto.com port 443: Connection timed out

[nebulon]

So then this is not really n8n related. If you can curl other things fine but only not omrto.com then maybe they have blocked you or some other firewall in between blocks it. Cloudron does at least not block such connections as such.

[overholt]

@nebulon You are right. Our website hosting provider had to whitelist the n8n server's IP. Thanks for your help!