HTTP Post method php and ios - iphone

Question

i'm facing a big problem,
I want to send data to my server, my data is a string.
I do not want to use Get method because the string might be very long, so i want to use POST method but everything goes, wrong, if someone can help me he'll be my hero :)
Here is my php code :
<?php include("config.inc.php");
if (isset($_POST['contentInterro']) && $_POST['contentInterro'] !="" ) {
//$id_user = $_POST['contentInterro'];
//$db->sql_query("INSERT INTO interrogations VALUES(DEFAULT, '$id_user')");
echo "succes";
}else{
echo "This is an error";
}
?>
Here is my app code :
NSData *postData = [stringToPost2 dataUsingEncoding:NSASCIIStringEncoding allowLossyConversion:YES];
NSString *postLength = [NSString stringWithFormat:#"%d",[postData length]];
NSMutableURLRequest *requestPost = [[NSMutableURLRequest alloc] init];
NSURL *urlPost = [NSURL URLWithString:#"http://buzznapps.fr/FDF/postInterrogation.php"];
[requestPost setURL:urlPost];
[requestPost setHTTPMethod:#"POST"];
[requestPost setValue:#"lol" forHTTPHeaderField:#"contentInterro"];
NSError *errorURL;
NSURLResponse *response;
NSData *urlData = [NSURLConnection sendSynchronousRequest:requestPost returningResponse:&response error:&errorURL];
NSString *str = [[NSString alloc] initWithData:urlData encoding:NSUTF8StringEncoding];
NSLog(#"Str = %#",str);
I always get an error, and i've search the web i do not know how to get this data !
Thanks for any help.

Answer 1

#define TIMEOUT_INTERVAL 60
#define CONTENT_TYPE #"Content-Type"
#define URL_ENCODED #"application/x-www-form-urlencoded"
#define GET #"GET"
#define POST #"POST"
-(NSMutableURLRequest*)getNSMutableURLRequestUsingGetMethodWithUrl:(NSString*)url
{
NSMutableURLRequest *req = [NSMutableURLRequest requestWithURL:[NSURL URLWithString:url] cachePolicy:NSURLRequestReloadIgnoringLocalAndRemoteCacheData timeoutInterval:TIMEOUT_INTERVAL];
[req setHTTPMethod:GET];
return req;
}
-(NSMutableURLRequest*)getNSMutableURLRequestUsingPOSTMethodWithUrl:(NSString *)url postData:(NSString*)_postData
{
NSMutableURLRequest *req = [NSMutableURLRequest requestWithURL:[NSURL URLWithString:url] cachePolicy:NSURLRequestReloadIgnoringLocalAndRemoteCacheData timeoutInterval:TIMEOUT_INTERVAL];
[req setHTTPMethod:POST];
[req addValue:URL_ENCODED forHTTPHeaderField:CONTENT_TYPE];
[req setHTTPBody: [_postData dataUsingEncoding:NSUTF8StringEncoding]];
return req;
}
#try
{
[UIApplication sharedApplication].networkActivityIndicatorVisible = YES;
NSString *_postData = [NSString stringWithFormat:#"user_name=%#&password=%#",#"user_name",#"password"];
NSMutableURLRequest *req = [self getNSMutableURLRequestUsingPOSTMethodWithUrl:_url postData:_postData];
[NSURLConnection sendAsynchronousRequest:req queue:[NSOperationQueue mainQueue] completionHandler:^(NSURLResponse *response, NSData *data, NSError *error)
{
if (error)
{
[UIApplication sharedApplication].networkActivityIndicatorVisible = NO;
NSLog(#"error==%#==",[error localizedDescription]);
}
else
{
NSError *errorInJsonParsing;
NSDictionary *json = [NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingMutableContainers error:&errorInJsonParsing];
if(errorInJsonParsing) //error parsing in json
{
[UIApplication sharedApplication].networkActivityIndicatorVisible = NO;
NSLog(#"error in json==%#==",[error localizedDescription]);
}
else
{
//do some operations
}
}
}];
}
#catch(NSException *exception)
{
NSLog(#"error in exception==%#==",[exception description]);
}
same way it works for the get method, just call the
NSMutableURLRequest *req = [self getNSMutableURLRequestUsingGetMethodWithUrl:_url]; instead of NSMutableURLRequest *req = [self getNSMutableURLRequestUsingPOSTMethodWithUrl:_url postData:_postData];