I have deployed my node.js application on Azure app services I get below error:
{ Error: listen EACCES: permission denied development
at Server.setupListenHandle [as _listen2] (net.js:1262:19)
at listenInCluster (net.js:1327:12)
at Server.listen (net.js:1425:5)
at Function.listen (D:\home\site\wwwroot\node_modules\express\lib\application.js:618:24)
at Server.start (D:\home\site\wwwroot\app.js:33:18)
at new Server (D:\home\site\wwwroot\app.js:30:14)
at Object.<anonymous> (D:\home\site\wwwroot\app.js:101:14)
at Module._compile (internal/modules/cjs/loader.js:778:30)
at Object.Module._extensions..js (internal/modules/cjs/loader.js:789:10)
at Module.load (internal/modules/cjs/loader.js:653:32)
code: 'EACCES',
errno: 'EACCES',
syscall: 'listen',
address: 'development',
port: -1 } 'Error: listen EACCES: permission denied development\n at Server.setupListenHandle [as _ listen2] (net.js:1262:19)\n
Try to set your port like below in your app.js or server file where you set the port.
var port = process.env.port || process.env.PORT || 3000;
Related
I am facing a trouble some problem where, I need kill everytime a given port to run my app.js which is front end for node js and
here is my app.js
var express = require("express");
var path = require("path");
//var routes = require("./routes");
var app = express();
app.set("port", process.env.PORT || 3000);
app.set("views", path.join(__dirname, "views"));
app.set("view engine", "ejs");
app.use("/public",express.static(path.resolve(__dirname,"public")));
app.use("/", require("./routes/web"));
app.use("/api", require("./routes/api"));
app.listen(app.get("port"), function(){
console.log("Server started on port " + app.get("port"));
})
> coedataapp#1.0.0 build
> node app
node:events:505
throw er; // Unhandled 'error' event
^
Error: listen EADDRINUSE: address already in use :::3000
at Server.setupListenHandle [as _listen2] (node:net:1372:16)
at listenInCluster (node:net:1420:12)
at Server.listen (node:net:1508:7)
at Function.listen (/Users/xxxxxx/Documents/my-learning/coe-central/node_modules/express/lib/application.js:635:24)
at Object.<anonymous> (/Users/xxxxx/Documents/my-learning/coe-central/app.js:17:5)
at Module._compile (node:internal/modules/cjs/loader:1105:14)
at Object.Module._extensions..js (node:internal/modules/cjs/loader:1159:10)
at Module.load (node:internal/modules/cjs/loader:981:32)
at Function.Module._load (node:internal/modules/cjs/loader:822:12)
at Function.executeUserEntryPoint [as runMain] (node:internal/modules/run_main:77:12)
Emitted 'error' event on Server instance at:
at emitErrorNT (node:net:1399:8)
at processTicksAndRejections (node:internal/process/task_queues:83:21) {
code: 'EADDRINUSE',
errno: -48,
syscall: 'listen',
address: '::',
port: 3000
}
Added my app.js code as well as the error I see in the console log. This will save my time and I will be able to make this serverless in future.
node:events:505
throw er; // Unhandled 'error' event
^
Error: listen EACCES: permission denied 4000;
at Server.setupListenHandle [as _listen2] (node:net:1363:21)
at listenInCluster (node:net:1428:12)
at Server.listen (node:net:1527:5)
at Function.listen (D:\REACT JS\E-COMMERCE\node_modules\express\lib\application.js:635:24)
at Object. (D:\REACT JS\E-COMMERCE\backend\server.js:10:5)
at Module._compile (node:internal/modules/cjs/loader:1099:14)
at Object.Module._extensions..js (node:internal/modules/cjs/loader:1153:10)
at Module.load (node:internal/modules/cjs/loader:975:32)
at Function.executeUserEntryPoint [as runMain] (node:internal/modules/run_main:77:12)
Emitted 'error' event on Server instance at:
at emitErrorNT (node:net:1407:8)
at processTicksAndRejections (node:internal/process/task_queues:83:21) {
errno: -4092,
syscall: 'listen',
address: '4000;',
port: -1
}
It's a permission issue, you can just write sudo as a prefix before your command if you are using linux/Mac
Hello im trying to run a program thats made in Node.js
the program is called "LawinServer" and i get this error message when trying to run it (worked before idk why it broke never changed any of the code)
edit: i also have admin perms on my pc lol
LawinServer started listening on port 3551
XMPP started listening on port 80
node:events:505
throw er; // Unhandled 'error' event
^
Error: listen EACCES: permission denied 0.0.0.0:80
at Server.setupListenHandle [as _listen2] (node:net:1363:21)
at listenInCluster (node:net:1428:12)
at Server.listen (node:net:1516:7)
at new WebSocketServer (M:\LawinServer-main\node_modules\ws\lib\websocket-server.js:97:20)
at Object.<anonymous> (M:\LawinServer-main\structure\xmpp.js:8:13)
at Module._compile (node:internal/modules/cjs/loader:1105:14)
at Module._extensions..js (node:internal/modules/cjs/loader:1159:10)
at Module.load (node:internal/modules/cjs/loader:981:32)
at Module._load (node:internal/modules/cjs/loader:827:12)
at Module.require (node:internal/modules/cjs/loader:1005:19)
Emitted 'error' event on WebSocketServer instance at:
at Server.emit (node:events:527:28)
at emitErrorNT (node:net:1407:8)
at process.processTicksAndRejections (node:internal/process/task_queues:82:21) {
code: 'EACCES',
errno: -4092,
syscall: 'listen',
address: '0.0.0.0',
port: 80
}
Node.js v18.2.0
M:\LawinServer-main>pause
Drücken Sie eine beliebige Taste . . .
I tried running the backend server but when I run the command node backend/server.js in my cmd, I'm getting this error:
D:\theshoppingcart>node backend/server.js
events.js:187
throw er; // Unhandled 'error' event
^
Error: listen EACCES: permission denied 8085;
at Server.setupListenHandle [as _listen2] (net.js:1284:19)
at listenInCluster (net.js:1349:12)
at Server.listen (net.js:1448:5)
at Object.<anonymous> (D:\theshoppingcart\backend\server.js:16:8)
at Module._compile (internal/modules/cjs/loader.js:959:30)
at Object.Module._extensions..js (internal/modules/cjs/loader.js:995:10)
at Module.load (internal/modules/cjs/loader.js:815:32)
at Function.Module._load (internal/modules/cjs/loader.js:727:14)
at Function.Module.runMain (internal/modules/cjs/loader.js:1047:10)
at internal/main/run_main_module.js:17:11
Emitted 'error' event on Server instance at:
at emitErrorNT (net.js:1328:8)
at processTicksAndRejections (internal/process/task_queues.js:80:21) {
code: 'EACCES',
errno: 'EACCES',
syscall: 'listen',
address: '8085;',
port: -1
}
this is my backend/server.js file:
require('dotenv').config()
const express = require("express");
const connectDB = require('./config/db');
connectDB();
const app = express();
const PORT = process.env.PORT || 8085;
app.listen(PORT, ()=> console.log(`server running on port ${PORT}`));
I had the same issue, you should remove the semicolon ; from the .env file. That has worked for me.
Open the .env file and check ";".
PORT = 5050;
You need to remove the ";" from the .env file. make it:
PORT = 5050
I'm using the uncaughtException event of process to detect errors. The provided error object does not have the code property, but the Node.js documentation says that code is a property of the Error class. Is the error object provided by uncaughtException different from the Error class?
It depends on the error which is caught, i.e. not all errors actually have the code property set.
Consider the following two simple examples:
// example 1
const express = require('express')
const app = express();
const port = 3000;
process.on('uncaughtException', (error) => {
console.log(error)
});
app.listen(port, () => console.log(`Example app listening on port ${port}!`))
If something else is already listening on the 3000 port, the following error-info will be printed to the console:
Error: listen EADDRINUSE: address already in use :::3000
at Server.setupListenHandle [as _listen2] (net.js:1298:14)
at listenInCluster (net.js:1346:12)
at Server.listen (net.js:1434:7)
...
at Module.load (internal/modules/cjs/loader.js:790:32)
at Function.Module._load (internal/modules/cjs/loader.js:703:12)
at Function.Module.runMain (internal/modules/cjs/loader.js:999:10) {
code: 'EADDRINUSE',
errno: 'EADDRINUSE',
syscall: 'listen',
address: '::',
port: 3000
}
As you can see the system error EADDRINUSE has a code property set.
On the other hand this
// example 2
process.on('uncaughtException', (error) => {
console.log(error)
});
someFunc();
will print:
ReferenceError: someFunc is not defined
...
at Module._compile (internal/modules/cjs/loader.js:936:30)
at Object.Module._extensions..js (internal/modules/cjs/loader.js:947:10)
at Module.load (internal/modules/cjs/loader.js:790:32)
at Function.Module._load (internal/modules/cjs/loader.js:703:12)
at Function.Module.runMain (internal/modules/cjs/loader.js:999:10)
at internal/main/run_main_module.js:17:11
As you can see ReferenceError does not have the code-property set.