ios4 - Transmitting a string via UDP using cocoaasyncsocket -

i've been teaching myself objective-c on past few months; i'm building iphone app company. started (and still am) complete novice, until have had no problems finding answers questions @ various locations online.

for final, , important, piece of app, need send simple string address/port via udp when button pressed. string, address, , port variables pulled object passed view controller.

i have been digging around 2 days looking @ solutions , reading examples, reads greek me. i'm not sure major hunk of knowledge seem have missed out on, i'm @ total loss. learned cocoaasyncsocket, , how "simple" is, , sounds perfect need, can't seem wrap mind around it. i'm hoping here can break down me simple terms.

here snippet of code i've been trying, no luck. code viewcontroller, asyncudpsocket.h imported:

-(ibaction)udpbuttontwopressed:(id)sender {     nsdata *mydata;     mydata = [[nsdata alloc] initwithdata:([selectedobject       valueforkey:@"udpcommandtwo"])];      asyncudpsocket *mysocket;     mysocket = [[asyncudpsocket alloc] initwithdelegate:self ];      nserror *error = nil;     if (!([mysocket connecttohost:([selectedobject       valueforkey:@"serveripaddress"]) onport:([[selectedobject       valueforkey:@"serverport"] intvalue]) error:&error])) {         nslog(@"can't connect cause: %@", error);         abort();     }      [mysocket close];      [mysocket release];     [mydata release]; } 

what doing wrong here?

there 2 things stand out example.

1. i don't see writing socket. have @ writedata:withtimeout:tag.

2. cocoaasyncsocket asynchronous in example going out of scope. if wanted write synchronously there example in reference.

   nsstring *customrunloopmode = @"mysyncwrite";

   [asyncsocket addrunloopmode:customrunloopmode]; [asyncsocket writedata:didbackgrounddata withtimeout:timeout_none tag:tag_bg];

   syncwritecomplete = no; bool runloopready = yes;

   while (runloopready && !syncwritecomplete) { runloopready = [[nsrunloop currentrunloop] runmode:customrunloopmode beforedate:[nsdate datewithtimeintervalsincenow:1.0]]; }

   [asyncsocket removerunloopmode:customrunloopmode];

hth