If I run a server with the port 80, and I try to use xmlHTTPrequest i get this error: Error: listen EADDRINUSE
Why is it problem for nodejs, if I want to do a request, while I run a server on the port 80? For the webbrowsers it is not a problem: I can surf on the internet, while the server is running.
The server is:
?net.createServer(function (socket) { ???socket.name = socket.remoteAddress + ":" + socket.remotePort; ???console.log(‘connection request from: ‘ + socket.remoteAddress); ???socket.destroy(); ?}).listen(options.port);And the request:
var xhr = new XMLHttpRequest();xhr.onreadystatechange = function() { ???sys.puts("State: " + this.readyState); ???if (this.readyState == 4) { ???????sys.puts("Complete.\nBody length: " + this.responseText.length); ???????sys.puts("Body:\n" + this.responseText); ???}};xhr.open("GET", "http://mywebsite.com");xhr.send();
EADDRINUSE means that the port number which listen() tries to bind the server to is already in use.
So, in your case, there must be running a server on port 80 already.
If you have another webserver running on this port you have to put node.js behind that server and proxy it through it.
You should check for the listening event like this, to see if the server is really listening:
var http=require(‘http‘);var server=http.createServer(function(req,res){ ???res.end(‘test‘);});server.on(‘listening‘,function(){ ???console.log(‘ok, server is running‘);});server.listen(80);
解决方案:
What really helped for me was:killall -9 nodeBut this will kill a system process.Withps axyou can check if it worked.
How to fix Error: listen EADDRINUSE while using nodejs
原文地址：https://www.cnblogs.com/sddai/p/9388338.html