Cannot read property 'port' of null

[christaggart]

I've had no issue with socketio in the past, but running the example results in this. I haven't changed any of the settings in srv.app.js or anything else.

node srv.web.js
info - socket.io started

timers.js:103
if (!process.listeners('uncaughtException').length) throw e;
^
TypeError: Cannot read property 'port' of null
at /Users/me/Projects/noduino/srv.web.js:17:83
at Object.context.execCb (/Users/me/Projects/noduino/node_modules/requirejs/bin/r.js:1692:33)
at Object.Module.check (/Users/me/Projects/noduino/node_modules/requirejs/bin/r.js:948:51)
at Object.Module.enable (/Users/me/Projects/noduino/node_modules/requirejs/bin/r.js:1211:22)
at Object.Module.init (/Users/me/Projects/noduino/node_modules/requirejs/bin/r.js:861:26)
at Object.context.makeRequire.mixin.isBrowser as _onTimeout
at Timer.list.ontimeout (timers.js:101:19)

[glidej]

Make sure you're not using port 8080 (used in srv.app.js) or 8090 (used in srv.socket.js) for something else. I ended up changing 8080 to 8081 and it worked for me.

[karmakazi]

I have this exact issue too. I have run it with default setting and I've changed the port still no dice.

[karmakazi]

I figured this one out. If I was running this on a server I wouldn't have had a issue but I'm running this on my laptop... and.... as it turns out I have a lot of ports open. I think anybody running this on OSX on their personal computer will likely have port conflicts. I would advise creating some kind of config file that makes changing this easier.

Here how to fix the problem:

1. Run the following command to see a list of ports in use:
   netstat -anf inet

2. Open the file srv.app.js

3. Change the port in the following line to one that is open:
   var kickstart = kickstart.withConfig({'name': 'localhost', 'port': 9000, 'path': './'});