How do I convert this curl command to Objective-C - ios

Question

the command:
curl -X POST -F "search={\"page\":\"1\",\"county\":\"18\",\"type\":\"J\"} " -H "Host: 118932.ro" http://118932.ro/dezv/ipa/index.php
This is what I have so far:
url = [NSURL URLWithString:#"http://www.118932.ro/dezv/ipa/index.php"];
NSData *data = [NSJSONSerialization dataWithJSONObject:self.requestData options:0 error:&error];
NSString *bodyString = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];
NSString *dataString = [NSString stringWithFormat:#"\"search=%#\"",bodyString];
NSData *dataBody = [dataString dataUsingEncoding:NSUTF8StringEncoding];
NSMutableURLRequest *request = [[NSMutableURLRequest alloc] initWithURL:url];
[request setHTTPMethod:#"POST"];
[request setHTTPBody:dataBody];
[request setValue:#"118932.ro" forHTTPHeaderField:#"Host"];
where self.requestData is the following dictionary
self.requestData = #{#"page" : #"1", #"county" : #"18", #"type" : #"J"};
but this doesnt seem to give me any results after I do this
self.connection = [[NSURLConnection alloc] initWithRequest:request delegate:self];
[self.connection start];

Answer 1

Here is the code I use. The -F parameter in cUrl specifies the actual post data, so you may want to use the string "search={\"page\":\"1\",\"county\":\"18\",\"type\":\"J\"} " as is. You should call this code in a background thread as the synchronous call will block the UI.
/**
* Do an HTTP POST request and return the results
*
* #param NSString * url the URL
* #param NSString * post the POST data
*
* #return NSDictionary * a dictionary containing the response, error, and data
*/
+ (NSDictionary *)httpPostRequestWithUrl:(NSString *)url post:(NSString *)post
{
NSData *postData = [post dataUsingEncoding:NSUTF8StringEncoding];
NSString *postLength = [NSString stringWithFormat:#"%d", (int)[postData length]];
NSMutableURLRequest *request = [[NSMutableURLRequest alloc] init];
[request setURL:[NSURL URLWithString:url]];
[request setHTTPMethod:#"POST"];
[request setValue:postLength forHTTPHeaderField:#"Content-Length"];
[request setValue:#"application/x-www-form-urlencoded" forHTTPHeaderField:#"Content-Type"];
[request setHTTPBody:postData];
[request setTimeoutInterval:30]; // set timeout for 30 seconds
[UIApplication sharedApplication].networkActivityIndicatorVisible = YES;
NSHTTPURLResponse *response = nil;
NSError *error = nil;
NSData *data = [NSURLConnection sendSynchronousRequest:request returningResponse:&response error:&error];
[UIApplication sharedApplication].networkActivityIndicatorVisible = NO;
NSMutableDictionary *rc = [[NSMutableDictionary alloc] init];
if ( response )
[rc setObject:response forKey:#"response"];
if ( error )
[rc setObject:error forKey:#"error"];
if ( data )
[rc setObject:data forKey:#"data"];
return (NSDictionary *)rc;
}