Not receiving data from NSMutableURLRequest (iPhone app sync) - iphone

Question

In the past, I created an iPhone app which relies on a sqlite database updated by a php page. When you access the PHP page, it prints out a dump of a sqlite database and the app runs the various queries to update the sqlite database. My previous app worked fine in this manner and would update accordingly. I recently tried to apply the same process to a new app with a much bigger database. I have run into problems.
What I am doing is sending some post variables to a PHP page which recognizes the POST and echoes out the sqlite commands to update the database. The problem is that it takes a few seconds for the page to print the commands. If I have the page print some static text, I get it in my NSLog(#"Response data is going to be ==> %#", result); command. If I have to extract the information from my MySQL database, it takes about 3-5 seconds and then prints (on my normal browser). When I run the app, however, it says that Response data is going to be ==> (null) instead of the commands.
Can anyone shed some light on what might be happening? I know that this works when it doesn't print a lot of stuff and when it is static. The dynamic part makes it return null for some reason.
Help appreciated.
NSMutableURLRequest *request = [[[NSMutableURLRequest alloc] init] autorelease];
[request setURL:[NSURL URLWithString:urlBase]];
[request setHTTPMethod:#"POST"];
[request setTimeoutInterval:60.0];
NSData *post = [myParameters dataUsingEncoding: NSASCIIStringEncoding allowLossyConversion:YES];
NSString *postLength = [NSString stringWithFormat:#"%d",[post length]];
[request setValue:postLength forHTTPHeaderField:#"Content-Length"];
[request setValue:#"application/x-www-form-urlencoded" forHTTPHeaderField:#"Current-Type"];
[request setHTTPBody:post];
[request setHTTPBody:[myParameters dataUsingEncoding:NSUTF8StringEncoding]];
// set headers
NSString *contentType = [NSString stringWithFormat:#"text/plain"];
NSHTTPURLResponse *urlResponse = nil;
NSError *error = [[NSError alloc] init];
NSData *responseData = [NSURLConnection sendSynchronousRequest:request
returningResponse:&urlResponse
error:&error];
NSString *result = [[NSString alloc] initWithData:responseData encoding:NSUTF8StringEncoding];
NSLog(#"Response data is going to be ==> %#", result);

Answer 1

try to understand this code..it helps u.
NSString *soapMessage=[NSString stringWithFormat:#" YOUR WEB SERVICE CODE",myTxt1.text,myTxt2.text];
NSLog(#"%#",soapMessage);
//-----------create connection
NSURL *url=[NSURL URLWithString:#"http://your local host webservice url"];
NSMutableURLRequest *theRequest=[NSMutableURLRequest requestWithURL:url];
NSString *msgLength=[NSString stringWithFormat:#"%d",[soapMessage length]];
//----------sending request
[theRequest addValue: #"text/xml; charset=utf-8" forHTTPHeaderField:#"Content-Type"];
[theRequest addValue: #"http://tempuri.org/AutenticateUser" forHTTPHeaderField:#"SOAPAction"];
[theRequest addValue: msgLength forHTTPHeaderField:#"Content-Length"];
[theRequest setHTTPMethod:#"POST"];
[theRequest setHTTPBody: [soapMessage dataUsingEncoding:NSUTF8StringEncoding]];
NSURLConnection *theConnection=[[NSURLConnection alloc]initWithRequest:theRequest delegate:self];
//[activityIndicator startAnimating];
if ( theConnection )
{
webData = [[NSMutableData data] retain];
}
else
{
NSLog(#"theConnection is NULL");
}