远程node.js http服务器无法启动或无法侦听

Question

I ran some node.js tests on my windows machine and everything worked well. Now I installed node on my debian remote machine, and Im trying to run a simple http server:

var http = require("http");

http.createServer(function(request, response) {
  response.writeHead(200, {"Content-Type": "text/plain"});
  response.write("Hello World");
  response.end();
}).listen(8888);

I execute using SSH: node server.js Now when I go to my server ip http://xxx.xxx.22.127:8888 the server times out.

What am I doing wrong? I tested with some simpler scripts and node.js appears to be installed properly. Can it be a firewall issue, or maybe I should add a host-ip or sommit?

Side question: when I run node server.js in putty i cant type anymore, how do I return to the commandline? :)

EDIT: My iptables info

Chain INPUT (policy ACCEPT)
target        prot opt source               destination
fail2ban-ssh  tcp  --  anywhere             anywhere            multiport dports ssh
ACCEPT        tcp  --  anywhere             anywhere            tcp dpt:5900
ACCEPT        tcp  --  anywhere             anywhere            tcp dpt:8888

Chain FORWARD (policy ACCEPT)
target     prot opt source               destination

Chain OUTPUT (policy ACCEPT)
target     prot opt source               destination

Chain fail2ban-ssh (1 references)
target     prot opt source               destination
RETURN     all  --  anywhere             anywhere

Answer 1

There may be a software firewall ( iptables for instance) or a hardware firewall in place which is stopping requests to 8888 from being received. The only way to resolve this is to dig into your server configuration/ network architecture to track down the problem. For instance, you can use iptables -L if you're using iptables to see what rules are enforced currently.

There could also be another application already listening on 8888 , but I believe this throws an error rather than failing like this, so I doubt this is the problem. One way to check this would be via netstat -a .

Needless to say, I am saying the code you've got should work fine, and it's a problem with your server set-up that is causing this.

Side answer: Use nohup and & like so; nohup node server.js & , although you should look at installing a module such as forever , and then use forever start server.js ; forever has the additional benefit of restarting your node process automagically if it crashes.

Answer 2

What am I doing wrong? I tested with some simpler scripts and node.js appears to be installed properly. Can it be a firewall issue, or maybe I should add a host-ip or sommit?

I see nothing wrong with the script itself. Try to debug it with telnet .

Side question: when I run node server.js in putty i cant type anymore, how do I return to the commandline? :)

node server.js &

(also see man nohup )