On Wed, May 15, 2013 at 1:05 PM, Васим Абу-Нассар <[email protected]> wrote:
> Hello.
> I have following code.
> Why its always outputs LAST port (27114)? What's wrong?
Please post code examples inline, people may not be able to access the
website you're linking to. I'll include your snippet here for
posterity:
var dgram = require("dgram");
var start = 27015;
for(var i = start; i < (start + 100); i++)
{
var server = dgram.createSocket("udp4");
server.on("message", function(msg, sender) {
console.log(server.address().port)
});
server.bind(i);
}
You're reassigning the server variable on each iteration. JS closures
close over the variable itself, not its value at the time of closure.
If you wrap the body of the loop in a function, each function gets its
own copy of the server variable.
Alternatively, you can use this.address() rather than server.address()
inside the event listener.
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