GCDAsyncSocket readData not being called

I am trying to send a message to a server and get a response using my iPhone. I can connect to the server using:

telnet 123.123.123.1 6000
Trying 123.123.123.1...
Connected to 123.123.123.1.
Escape character is '^]'.
?VERSION
OK
VERSION=PROTOCOL: 1.1.0 

      

        
        
        
      

    

? VERSION is my question

OK states that he received and understood the question

VERSION = response from server

so i am trying to do the same but with xcode

So I have this in my view DidLoad

dispatch_queue_t mainQueue = dispatch_get_main_queue();
asyncSocket = [[GCDAsyncSocket alloc]initWithDelegate:self delegateQueue:mainQueue];
asyncSocket.delegate = self;

NSString *host = @"123.123.123.1";
uint16_t port = 6000;

NSLog(@"Connecting to \"%@\" on port %hu...", host, port);

NSError *error = nil;
if (![asyncSocket connectToHost:host onPort:port withTimeout:5.0 error:&error])
{
    NSLog(@"Error connecting: %@", error);
}
else
{
    NSLog(@"Connecting...");
}

      

        
        
        
      

    

And I have the following code showing that it is connected

-(void)socket:(GCDAsyncSocket *)sock didConnectToHost:(NSString *)host port:
(UInt16)port

{
NSLog(@"socket:%p didConnectToHost:%@ port:%hu", sock, host, port);

// We're just going to send a test string to the server.

NSString *myStr = @"?VERSION";
NSData *myData2 = [myStr dataUsingEncoding:NSUTF8StringEncoding];

[asyncSocket writeData:myData2 withTimeout:-1 tag:0];


}

      

        
        
        
      

    

And the next to show it is written

-(void)socket:(GCDAsyncSocket *)sock didWriteDataWithTag:(long)tag{
NSLog(@"WRITING");
[asyncSocket readDataToData:[GCDAsyncSocket LFData] withTimeout:-1 tag:0];
}

      

        
        
        
      

    

Unfortunately it is never called

- (void)socket:(GCDAsyncSocket *)sock didReadData:(NSData *)data withTag:(long)tag
{


NSString *tempString = [[NSString alloc]initWithData:data 
                                        encoding: NSUTF8StringEncoding];


}

      

        
        
        
      

    

I'm lost and really need help