How to access a rest api in the local network using node js and express

Question

I have created a REST server using Node.js and express, but i am having trouble connecting to the server on a separate machine. The server machine and client machine are on the same local network.

This is my code for the server

const express = require("express");
const bodyParser = require("body-parser");
const app = express();

const PORT = process.env.PORT || 3000;

const imageUpload = require("./routes/imageUpload");

app.use(bodyParser.urlencoded({extended: false}));
app.use(bodyParser.json());

app.use((req, res, next) => {
    res.header('Access-Control-Allow-Origin', '*');
    res.header('Access-Control-Allow-Headers', '*');
    next();
});

app.use("/imageUpload", imageUpload);

app.listen(PORT, "0.0.0.0", () => {
    console.log("Running at port " + PORT);
})


router.get("/getFilename", (req, res) => {

        res.status(200).json({
            status: "recieved"
        });
 });

Upon using postman on the server machine the get request works fine even if using the machine IP address in the network(192.168.0.104:3000/imageUpload/getFilename).

On a separate machine in the network the postman will give an error of There was an error connecting to 192.168.0.104:3000/imageUpload/getFilename. so i am unable to connect to the API, How do i fix this? Thank you very much

Pavel K · Accepted Answer · 2019-01-06 15:47:05Z

2

Your problem is rather in network settings, not in nodejs or express.

Did you try ping 192.168.0.104 your server? If it works most likely you need to manually open port 3000.

Try google how to open a port on a server for the OS your are using on that machine.

answered Jan 6, 2019 at 15:47

Pavel K

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1 Comment

Jake quin Over a year ago

it works ! i am running the server on ubuntu and the comand sudo ufw allow 3000 did the trick.

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