soap web service - iphone

Question

I am parsing a soap web service for authentication but it is not returining any NSData so that I can writex xml parser for it.
Please let me know what I'm doing wrong.
Here is my code:
**
-(void)getAdvertisment
{
NSString* soapMesasge=
[NSString stringWithFormat:#"<?xml version=\"1.0\" encoding=\"utf-8\"?>"
"<soap:Envelope xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\"
xmlns:xsd=\"http://www.w3.org/2001/XMLSchema\"
xmlns:soap=\"http://schemas.xmlsoap.org/soap/envelope/\">"
"<soap:Body>"
"<GetAdvertisement xmlns=\"http://tempuri.org/\" />"
"</soap:Body>"
"</soap:Envelope>"];**
NSURL* url=[NSURL URLWithString:#"http://codeexsolutions.com/HosService/ServiceHOSProvider.asmx"];
NSMutableURLRequest* theRequest=[NSMutableURLRequest requestWithURL:url];
NSString* msgLength=[NSString stringWithFormat:#"%d",[soapMesasge length]];
[theRequest addValue:#"text/xml" forHTTPHeaderField:#"Content-Type"];
[theRequest addValue:#"http://tempuri.org/GetAdvertisement" forHTTPHeaderField:#"SOAPAction"];
[theRequest addValue:msgLength forHTTPHeaderField:#"Content-Length"];
[theRequest setHTTPMethod:#"POST"];
[theRequest setHTTPBody:[soapMesasge dataUsingEncoding:NSUTF8StringEncoding]];
NSURLConnection *theConnection=[[NSURLConnection alloc] initWithRequest:theRequest delegate:self];
if (theConnection)
{
webData =[[NSMutableData alloc]retain];
}
else
{
// Inform the user that the connection failed.
}
}

Answer 1

NSURLConnection is an asynchronous method - have you implemented the rest of the delegate methods needed to actually listen for and retrieve the data?
You may wish to review the documentation here
In your example above, webData will always be empty, it's up to you to populate it...