I'm new to node.js and was trying to run the following training example for setting up a basic http server on my mac (OS X Yosemite 10.10.3):
var http = require("http");
http.createServer(function (request, response) {
request.on("end", function () {
response.writeHead(200, {
'Content-Type': 'text/plain'
});
response.end('Hello HTTP!');
});
}).listen(8080);
I get the following error when executing the code:
$ node http.js events.js:85
throw er; // Unhandled 'error' event
^ Error: listen EADDRINUSE
at exports._errnoException (util.js:746:11)
at Server._listen2 (net.js:1156:14)
at listen (net.js:1182:10)
at Server.listen (net.js:1267:5)
at Object. (/Users/sumankalyan/WebstormProjects/Node-Server/http.js:25:4)
at Module._compile (module.js:460:26)
at Object.Module._extensions..js (module.js:478:10)
at Module.load (module.js:355:32)
at Function.Module._load (module.js:310:12)
at Function.Module.runMain (module.js:501:10)
Not sure if this is a localhost config issue or something else. Any help much appreciated.
Another application is using the port 8080. You can run
lsof -i :8080
to see what it is. You can also just try another port.
Related
I have a socket.io node file that starts like this...
//sockets/server
var app = require('http').createServer(handler)
var io = require('socket.io')(app);
var fs = require('fs');
app.listen(80); //the 5th line that the error refers to
When I run from the console with "node myFile.js" I get the following error...
events.js:85
throw er; // Unhandled 'error' event
^
Error: listen EACCES
at exports._errnoException (util.js:746:11)
at Server._listen2 (net.js:1112:19)
at listen (net.js:1155:10)
at Server.listen (net.js:1240:5)
at Object.<anonymous> (/home/myUser/node/myFile.js:5:5)
at Module._compile (module.js:460:26)
at Object.Module._extensions..js (module.js:478:10)
at Module.load (module.js:355:32)
at Function.Module._load (module.js:310:12)
at Function.Module.runMain (module.js:501:10)
I can easily get around the error on my local machine (MAMP) by adding 'sudo' to the start of the command, but my hosting provider won't let me do that on the production environment.
Does anyone have any idea of a way to fix the error (or even know what it means) as opposed to sudoing it out of the way?
Port 80 is a privileged port, and you need root or CAP_NET_ADMIN to bind to it.
The solutions are:
Do not bind to port 80 for development.
Configure your system to allow the port to be used as a normal user. See: https://superuser.com/questions/710253/allow-non-root-process-to-bind-to-port-80-and-443
Have tried do work out this simple code in cloud9
but it seems like some process is already located
on process.env.PORT and I can't seem to find it.
Have tried killing nodes searching for nodes.
And i'm not entirely sure how to connect to port like 3000 on cloud9. (localhost:3000)
Debugger listening on port 15454
events.js:141
throw er; // Unhandled 'error' event
^
Error: listen EADDRINUSE :::8080
at Object.exports._errnoException (util.js:870:11)
at exports._exceptionWithHostPort (util.js:893:20)
at Server._listen2 (net.js:1234:14)
at listen (net.js:1270:10)
at Server.listen (net.js:1366:5)
at Object.<anonymous> (/home/ubuntu/workspace/script.js:5:4)
at Module._compile (module.js:409:26)
at Object.Module._extensions..js (module.js:416:10)
at Module.load (module.js:343:32)
at Function.Module._load (module.js:300:12)
The code
var http = require('http');
http.createServer(function (req, res) {
res.writeHead(200, {'Content-Type': 'text/plain'});
res.end('Hello World\n');
}).listen(process.env.PORT);
I am new to NodeJS.
I have the following code for hello world.
var http = require("http");
http.createServer(function(request, response) {
response.writeHead(200, {'Content-Type': 'text/plain'});
response.end('Hello World!\n I am the AWS cloud');
}).listen(8081);
console.log('Server is running at http://127.0.0.1:8081');
This code is saved on my AWS cloud which runs an Ubuntu 14.04 instance.
I have installed nodeJS on Ubuntu.
When I run the code it works fine and displays the console log message, but when I open a web browser on a different machine and type http://Public-IP-Address:8081 it does not work.
Also when I stop the script by pressing Ctrl+c and then again execute it, it displays the following error message:
Server is running at http://127.0.0.1:8081
events.js:85
throw er; // Unhandled 'error' event
^
Error: listen EADDRINUSE
at exports._errnoException (util.js:746:11)
at Server._listen2 (net.js:1156:14)
at listen (net.js:1182:10)
at Server.listen (net.js:1267:5)
at Object.<anonymous> (/home/ubuntu/NodeJSscripts/hw.js:17:22)
at Module._compile (module.js:460:26)
at Object.Module._extensions..js (module.js:478:10)
at Module.load (module.js:355:32)
at Function.Module._load (module.js:310:12)
at Function.Module.runMain (module.js:501:10)
When I go back and change the port number and run the script again, it then runs again without throwing any error, but the web browser still doesn't connect to the server through it's public IP.
Why do I get an error on my Amazon server when running my NodeJS app?
sudo node app.js
Error: listen EADDRINUSE
at errnoException (net.js:904:11)
at Server._listen2 (net.js:1042:14)
at listen (net.js:1064:10)
at Server.listen (net.js:1138:5)
at Object.<anonymous> (/home/ubuntu/www/app.js:65:38)
at Module._compile (module.js:456:26)
at Object.Module._extensions..js (module.js:474:10)
at Module.load (module.js:356:32)
at Function.Module._load (module.js:312:12)
at Function.Module.runMain (module.js:497:10)
Here is my code:
var app = express();
var server = http.createServer(app).listen(4000, function() {
console.log('Express HTTP server listening on port ' + app.get('port'));
});
https.createServer(credentials, app).listen(443, function() {
console.log('Express HTTPS server listening on port 443');
});
I think the problem is the 443 because when I delete the https.createServer "listen()" connection then everything works fine.
Thanks for your attention :)
You probably have another process running that's using this port (probably another instance of your app.
Use ps aux to see your running processes.
Use lsof -i | grep 4000 to see what's using this port.
Writing a test application in Node.js running on OpenShift and it currently will not start.
This is my code:
#!/bin/env node
var http = require('http');
var ip = process.env.OPENSHIFT_NODEJS_IP;
var port = process.env.OPENSHIFT_NODEJS_PORT;
http.createServer(function (req, res) {
res.writeHead(200, {'Content-Type': 'text/plain'});
res.end('Hello World\n');
}).listen(ip, port);
console.log('Server running');
I get the error
events.js:72
throw er; // Unhandled 'error' event
^
Error: listen EADDRINUSE
at errnoException (net.js:884:11)
at Server._listen2 (net.js:1003:19)
at listen (net.js:1044:10)
at Server.listen (net.js:1104:5)
at Object.<anonymous> (/var/lib/openshift/52854c6f4382ec071400051d/app-root/runtime/repo/server.js:11:4)
at Module._compile (module.js:456:26)
at Object.Module._extensions..js (module.js:474:10)
at Module.load (module.js:356:32)
at Function.Module._load (module.js:312:12)
at Function.Module.runMain (module.js:497:10)
DEBUG: Program node server.js exited with code 8
Which seems to mean I can't bind to the port. I've found various information on why this might be but none of it seems relevant - it all seems related to permissions but surely the point of process.env.OPENSHIFT_NODEJS_* is I have permission to bind to it?
It means some other process is using your port process.env.OPENSHIFT_NODEJS_PORT. EACCESS would mean permission denied, not EADDRINUSE. Try changing to unused ports like 8080. You can check used ports with :
netstat -tulpn
netstat -tulpn | grep :$OPENSHIFT_NODEJS_PORT //filter by your port