Browser request works but exact same node red request fails

General
21

No joy. Same error:

8 Apr 18:48:11 - [error] [http request:A random name] no response from server

22

most odd.

Everything looks normal (node-red installation / setup wise).

And I dont see the same rst - this suggests something else (external to node-red) is going on.

One last check: what does npm ls -g got reveal?

23 
/usr/lib
└─┬ node-red@4.0.9
  └─┬ @node-red/nodes@4.0.9
    └── got@12.6.1
1 Like
24

Do you have another SD card that you can install RPiOS & Node-red on to see if it works with a fresh installation?

Does it make any difference if you use the existing Pi on a different network (eg phone hotspot)?

25

I have tested the flow on another Raspberry Pi which is running Victron's Venus OS. It works. Here is the system info:

{
    "report": "diagnostics",
    "scope": "basic",
    "time": {
        "utc": "Tue, 08 Apr 2025 20:39:29 GMT",
        "local": "4/9/2025, 8:39:29 AM"
    },
    "intl": {
        "locale": "en-US",
        "timeZone": "Pacific/Auckland"
    },
    "nodejs": {
        "version": "v18.20.3",
        "arch": "arm",
        "platform": "linux",
        "memoryUsage": {
            "rss": 115806208,
            "heapTotal": 50757632,
            "heapUsed": 35713452,
            "external": 4747760,
            "arrayBuffers": 635613
        }
    },
    "os": {
        "wsl": false,
        "totalmem": 1961508864,
        "freemem": 1605591040,
        "arch": "arm",
        "loadavg": [
            0.2,
            0.2,
            0.24
        ],
        "platform": "linux",
        "release": "5.10.110-rpi-venus-4",
        "type": "Linux",
        "uptime": 759370.35,
        "version": "#1 SMP Tue Jan 28 14:19:25 UTC 2025"
    },
    "runtime": {
        "version": "3.1.10",
        "isStarted": true,
        "flows": {
            "state": "start",
            "started": true
        },
        "modules": {
            "node-red": "3.1.10",
            "@victronenergy/node-red-contrib-victron": "1.5.23",
            "node-red-dashboard": "3.6.5",
            "victron-vrm-api": "0.2.10"
        },
        "settings": {
            "available": true,
            "apiMaxLength": "UNSET",
            "disableEditor": false,
            "contextStorage": {},
            "debugMaxLength": 1000,
            "editorTheme": {
                "palette": {},
                "projects": {
                    "enabled": false,
                    "workflow": {
                        "mode": "manual"
                    }
                },
                "codeEditor": {
                    "lib": "ace",
                    "options": {
                        "theme": "vs"
                    }
                }
            },
            "flowFile": "flows.json",
            "mqttReconnectTime": 15000,
            "serialReconnectTime": 15000,
            "socketReconnectTime": "UNSET",
            "socketTimeout": "UNSET",
            "tcpMsgQueueSize": "UNSET",
            "inboundWebSocketTimeout": "UNSET",
            "runtimeState": "UNSET",
            "adminAuth": "SET",
            "httpAdminRoot": "/",
            "httpAdminCors": "UNSET",
            "httpNodeAuth": "UNSET",
            "httpNodeRoot": "/",
            "httpNodeCors": "UNSET",
            "httpStatic": "UNSET",
            "httpStaticRoot": "UNSET",
            "httpStaticCors": "UNSET",
            "uiHost": "SET",
            "uiPort": "SET",
            "userDir": "SET",
            "nodesDir": "UNSET"
        }
    }
}

This machine is on the same network but is running different versions of nodejs, node red and OS. So maybe I will try different versions of nodejs and/or node red on the problematic machine.

1 Like
26

Downgraded nodejs to version v18.20.8. Node red version still v4.0.9. Flow now works.